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diff --git a/3a/40b75edd68/0/full.jsonl b/3a/40b75edd68/0/full.jsonl
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+{"type":"file-history-snapshot","messageId":"6b855910-ce88-4a78-83b9-0468e6707024","snapshot":{"messageId":"6b855910-ce88-4a78-83b9-0468e6707024","trackedFileBackups":{},"timestamp":"2026-03-16T11:01:41.295Z"},"isSnapshotUpdate":false}
+{"parentUuid":null,"isSidechain":false,"type":"progress","data":{"type":"hook_progress","hookEvent":"SessionStart","hookName":"SessionStart:clear","command":"entire hooks claude-code session-start"},"parentToolUseID":"81a1a454-42e3-406a-9b33-4db2038fa9a3","toolUseID":"81a1a454-42e3-406a-9b33-4db2038fa9a3","timestamp":"2026-03-16T11:01:41.247Z","uuid":"540f5f91-e180-4fb7-9c65-29e05e35a850","userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"23bd02ee-e611-4488-a3d4-71ca93985943","version":"2.1.76","gitBranch":"hotfix","slug":"magical-sauteeing-gosling"}
+{"parentUuid":"540f5f91-e180-4fb7-9c65-29e05e35a850","isSidechain":false,"promptId":"c2bc230a-67ed-4f5e-b42f-f832728effa2","type":"user","message":{"role":"user","content":"Implement the following plan:\n\n# Plan: Add Health Check to NATS Node State Handler\n\n## Context\n\nThe NATS `processNodestateEvent` handler in `internal/api/nats.go` is missing the health check logic that the REST `updateNodeStates` handler in `internal/api/node.go` has. Currently, the NATS handler hardcodes `HealthState: schema.MonitoringStateFull` and leaves `HealthMetrics` empty, while the REST handler:\n\n1. Groups nodes by subcluster\n2. Fetches metric configurations per subcluster\n3. Runs health checks against the metric store\n4. Uses health check results per node (defaulting to `MonitoringStateFailed` if unavailable)\n\nThis means node state updates via NATS always report full health regardless of actual metric availability, producing inconsistent data compared to the REST path.\n\n## Changes\n\n### File: `internal/api/nats.go`\n\n**1. Add missing imports:**\n- `\"maps\"`\n- `\"github.com/ClusterCockpit/cc-backend/internal/metricdispatch\"`\n- `\"github.com/ClusterCockpit/cc-backend/pkg/archive\"`\n- `\"github.com/ClusterCockpit/cc-backend/pkg/metricstore\"`\n\n**2. Rewrite `processNodestateEvent` (lines 382-425)** to match the REST handler logic:\n\n- After parsing the request, add the same health check flow from `updateNodeStates` (node.go lines 82-114):\n  - Build `map[subcluster][]hostname` using `archive.GetSubClusterByNode()`\n  - Build `metricNames` per subcluster using `archive.GetMetricConfigSubCluster()` + `metricListToNames()`\n  - Get health check repo via `metricdispatch.GetHealthCheckRepo(req.Cluster)`\n  - Run `healthRepo.HealthCheck()` per subcluster, merge results\n- When building `NodeStateDB`, default `HealthState` to `MonitoringStateFailed` (not `MonitoringStateFull`) and use health check results when available — identical to REST handler (node.go lines 120-143)\n\n### Reused existing functions (no new code needed):\n- `determineState()` — already shared (`internal/api/node.go:38`)\n- `metricListToNames()` — already shared (`internal/api/node.go:29`)\n- `archive.GetSubClusterByNode()` — from `pkg/archive`\n- `archive.GetMetricConfigSubCluster()` — from `pkg/archive`\n- `metricdispatch.GetHealthCheckRepo()` — from `internal/metricdispatch`\n- `repo.BatchUpdateNodeStates()` — already used\n\n## Verification\n\n1. `go build ./...` — ensure it compiles\n2. `go test ./internal/api/...` — run existing NATS tests\n3. Review that `TestNatsHandleNodeState` and `TestNatsHandleNodeStateEdgeCases` still pass (they don't assert on HealthState values, so should be fine)\n4. Manual comparison: the node-building loop in NATS should now be identical to REST (node.go lines 119-143)\n\n\nIf you need specific details from before exiting plan mode (like exact code snippets, error messages, or content you generated), read the full transcript at: /Users/jan/.claude/projects/-Users-jan-prg-ClusterCockpit-cc-backend/aac4ddda-7b73-4e7a-ab7b-75bbf24e26b3.jsonl"},"uuid":"6b855910-ce88-4a78-83b9-0468e6707024","timestamp":"2026-03-16T11:01:41.156Z","planContent":"# Plan: Add Health Check to NATS Node State Handler\n\n## Context\n\nThe NATS `processNodestateEvent` handler in `internal/api/nats.go` is missing the health check logic that the REST `updateNodeStates` handler in `internal/api/node.go` has. Currently, the NATS handler hardcodes `HealthState: schema.MonitoringStateFull` and leaves `HealthMetrics` empty, while the REST handler:\n\n1. Groups nodes by subcluster\n2. Fetches metric configurations per subcluster\n3. Runs health checks against the metric store\n4. Uses health check results per node (defaulting to `MonitoringStateFailed` if unavailable)\n\nThis means node state updates via NATS always report full health regardless of actual metric availability, producing inconsistent data compared to the REST path.\n\n## Changes\n\n### File: `internal/api/nats.go`\n\n**1. Add missing imports:**\n- `\"maps\"`\n- `\"github.com/ClusterCockpit/cc-backend/internal/metricdispatch\"`\n- `\"github.com/ClusterCockpit/cc-backend/pkg/archive\"`\n- `\"github.com/ClusterCockpit/cc-backend/pkg/metricstore\"`\n\n**2. Rewrite `processNodestateEvent` (lines 382-425)** to match the REST handler logic:\n\n- After parsing the request, add the same health check flow from `updateNodeStates` (node.go lines 82-114):\n  - Build `map[subcluster][]hostname` using `archive.GetSubClusterByNode()`\n  - Build `metricNames` per subcluster using `archive.GetMetricConfigSubCluster()` + `metricListToNames()`\n  - Get health check repo via `metricdispatch.GetHealthCheckRepo(req.Cluster)`\n  - Run `healthRepo.HealthCheck()` per subcluster, merge results\n- When building `NodeStateDB`, default `HealthState` to `MonitoringStateFailed` (not `MonitoringStateFull`) and use health check results when available — identical to REST handler (node.go lines 120-143)\n\n### Reused existing functions (no new code needed):\n- `determineState()` — already shared (`internal/api/node.go:38`)\n- `metricListToNames()` — already shared (`internal/api/node.go:29`)\n- `archive.GetSubClusterByNode()` — from `pkg/archive`\n- `archive.GetMetricConfigSubCluster()` — from `pkg/archive`\n- `metricdispatch.GetHealthCheckRepo()` — from `internal/metricdispatch`\n- `repo.BatchUpdateNodeStates()` — already used\n\n## Verification\n\n1. `go build ./...` — ensure it compiles\n2. `go test ./internal/api/...` — run existing NATS tests\n3. Review that `TestNatsHandleNodeState` and `TestNatsHandleNodeStateEdgeCases` still pass (they don't assert on HealthState values, so should be fine)\n4. Manual comparison: the node-building loop in NATS should now be identical to REST (node.go lines 119-143)\n","userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"23bd02ee-e611-4488-a3d4-71ca93985943","version":"2.1.76","gitBranch":"hotfix","slug":"magical-sauteeing-gosling"}
+{"parentUuid":"6b855910-ce88-4a78-83b9-0468e6707024","isSidechain":false,"message":{"model":"claude-opus-4-6","id":"msg_01VGMkLLJGkro7ZpB1Mrmrs3","type":"message","role":"assistant","content":[{"type":"text","text":"\n\nLet me start by reading the relevant files to understand the current code."}],"stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":3,"cache_creation_input_tokens":4682,"cache_read_input_tokens":14320,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":4682},"output_tokens":2,"service_tier":"standard","inference_geo":"not_available"}},"requestId":"req_011CZ6eNU68SWVsJ1J6xD3EV","type":"assistant","uuid":"3188fdce-217c-469e-b584-8a5cabff8faf","timestamp":"2026-03-16T11:01:44.092Z","userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"23bd02ee-e611-4488-a3d4-71ca93985943","version":"2.1.76","gitBranch":"hotfix","slug":"magical-sauteeing-gosling"}
+{"parentUuid":"3188fdce-217c-469e-b584-8a5cabff8faf","isSidechain":false,"message":{"model":"claude-opus-4-6","id":"msg_01VGMkLLJGkro7ZpB1Mrmrs3","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_015zPZ6S14vQuKHUnRNB24fX","name":"Read","input":{"file_path":"/Users/jan/prg/ClusterCockpit/cc-backend/internal/api/nats.go"},"caller":{"type":"direct"}}],"stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":3,"cache_creation_input_tokens":4682,"cache_read_input_tokens":14320,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":4682},"output_tokens":2,"service_tier":"standard","inference_geo":"not_available"}},"requestId":"req_011CZ6eNU68SWVsJ1J6xD3EV","type":"assistant","uuid":"10710b01-4a18-4204-bda3-b7cc53b5f7c3","timestamp":"2026-03-16T11:01:44.960Z","userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"23bd02ee-e611-4488-a3d4-71ca93985943","version":"2.1.76","gitBranch":"hotfix","slug":"magical-sauteeing-gosling"}
+{"parentUuid":"10710b01-4a18-4204-bda3-b7cc53b5f7c3","isSidechain":false,"type":"progress","data":{"type":"hook_progress","hookEvent":"PostToolUse","hookName":"PostToolUse:Read","command":"callback"},"parentToolUseID":"toolu_015zPZ6S14vQuKHUnRNB24fX","toolUseID":"toolu_015zPZ6S14vQuKHUnRNB24fX","timestamp":"2026-03-16T11:01:44.984Z","uuid":"eba4dc44-b2fa-4be7-9632-53f59d3ea4c8","userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"23bd02ee-e611-4488-a3d4-71ca93985943","version":"2.1.76","gitBranch":"hotfix","slug":"magical-sauteeing-gosling"}
+{"parentUuid":"10710b01-4a18-4204-bda3-b7cc53b5f7c3","isSidechain":false,"promptId":"c2bc230a-67ed-4f5e-b42f-f832728effa2","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_015zPZ6S14vQuKHUnRNB24fX","type":"tool_result","content":"     1→// Copyright (C) NHR@FAU, University Erlangen-Nuremberg.\n     2→// All rights reserved. This file is part of cc-backend.\n     3→// Use of this source code is governed by a MIT-style\n     4→// license that can be found in the LICENSE file.\n     5→\n     6→package api\n     7→\n     8→import (\n     9→\t\"database/sql\"\n    10→\t\"encoding/json\"\n    11→\t\"strings\"\n    12→\t\"sync\"\n    13→\t\"time\"\n    14→\n    15→\t\"github.com/ClusterCockpit/cc-backend/internal/archiver\"\n    16→\t\"github.com/ClusterCockpit/cc-backend/internal/config\"\n    17→\t\"github.com/ClusterCockpit/cc-backend/internal/importer\"\n    18→\t\"github.com/ClusterCockpit/cc-backend/internal/repository\"\n    19→\tcclog \"github.com/ClusterCockpit/cc-lib/v2/ccLogger\"\n    20→\tlp \"github.com/ClusterCockpit/cc-lib/v2/ccMessage\"\n    21→\t\"github.com/ClusterCockpit/cc-lib/v2/nats\"\n    22→\t\"github.com/ClusterCockpit/cc-lib/v2/receivers\"\n    23→\t\"github.com/ClusterCockpit/cc-lib/v2/schema\"\n    24→\tinflux \"github.com/ClusterCockpit/cc-line-protocol/v2/lineprotocol\"\n    25→)\n    26→\n    27→// natsMessage wraps a raw NATS message with its subject for channel-based processing.\n    28→type natsMessage struct {\n    29→\tsubject string\n    30→\tdata    []byte\n    31→}\n    32→\n    33→// NatsAPI provides NATS subscription-based handlers for Job and Node operations.\n    34→// It mirrors the functionality of the REST API but uses NATS messaging with\n    35→// InfluxDB line protocol as the message format.\n    36→//\n    37→// # Message Format\n    38→//\n    39→// All NATS messages use InfluxDB line protocol format (https://docs.influxdata.com/influxdb/v2.0/reference/syntax/line-protocol/)\n    40→// with the following structure:\n    41→//\n    42→//\tmeasurement,tag1=value1,tag2=value2 field1=value1,field2=value2 timestamp\n    43→//\n    44→// # Job Events\n    45→//\n    46→// Job start/stop events use the \"job\" measurement with a \"function\" tag to distinguish operations:\n    47→//\n    48→//\tjob,function=start_job event=\"{...JSON payload...}\" <timestamp>\n    49→//\tjob,function=stop_job event=\"{...JSON payload...}\" <timestamp>\n    50→//\n    51→// The JSON payload in the \"event\" field follows the schema.Job or StopJobAPIRequest structure.\n    52→//\n    53→// Example job start message:\n    54→//\n    55→//\tjob,function=start_job event=\"{\\\"jobId\\\":1001,\\\"user\\\":\\\"testuser\\\",\\\"cluster\\\":\\\"testcluster\\\",...}\" 1234567890000000000\n    56→//\n    57→// # Node State Events\n    58→//\n    59→// Node state updates use the \"nodestate\" measurement with cluster information:\n    60→//\n    61→//\tnodestate event=\"{...JSON payload...}\" <timestamp>\n    62→//\n    63→// The JSON payload follows the UpdateNodeStatesRequest structure.\n    64→//\n    65→// Example node state message:\n    66→//\n    67→//\tnodestate event=\"{\\\"cluster\\\":\\\"testcluster\\\",\\\"nodes\\\":[{\\\"hostname\\\":\\\"node01\\\",\\\"states\\\":[\\\"idle\\\"]}]}\" 1234567890000000000\n    68→type NatsAPI struct {\n    69→\tJobRepository *repository.JobRepository\n    70→\t// RepositoryMutex protects job creation operations from race conditions\n    71→\t// when checking for duplicate jobs during startJob calls.\n    72→\tRepositoryMutex sync.Mutex\n    73→\t// jobCh receives job event messages for processing by worker goroutines.\n    74→\tjobCh chan natsMessage\n    75→\t// nodeCh receives node state messages for processing by worker goroutines.\n    76→\tnodeCh chan natsMessage\n    77→}\n    78→\n    79→// NewNatsAPI creates a new NatsAPI instance with channel-based worker pools.\n    80→// Concurrency is configured via NATSConfig (defaults: JobConcurrency=8, NodeConcurrency=2).\n    81→func NewNatsAPI() *NatsAPI {\n    82→\tjobConc := 8\n    83→\tnodeConc := 2\n    84→\n    85→\tif s := config.Keys.APISubjects; s != nil {\n    86→\t\tif s.JobConcurrency > 0 {\n    87→\t\t\tjobConc = s.JobConcurrency\n    88→\t\t}\n    89→\t\tif s.NodeConcurrency > 0 {\n    90→\t\t\tnodeConc = s.NodeConcurrency\n    91→\t\t}\n    92→\t}\n    93→\n    94→\tapi := &NatsAPI{\n    95→\t\tJobRepository: repository.GetJobRepository(),\n    96→\t\tjobCh:         make(chan natsMessage, jobConc),\n    97→\t\tnodeCh:        make(chan natsMessage, nodeConc),\n    98→\t}\n    99→\n   100→\t// Start worker goroutines\n   101→\tfor range jobConc {\n   102→\t\tgo api.jobWorker()\n   103→\t}\n   104→\tfor range nodeConc {\n   105→\t\tgo api.nodeWorker()\n   106→\t}\n   107→\n   108→\treturn api\n   109→}\n   110→\n   111→// jobWorker processes job event messages from the job channel.\n   112→func (api *NatsAPI) jobWorker() {\n   113→\tfor msg := range api.jobCh {\n   114→\t\tapi.handleJobEvent(msg.subject, msg.data)\n   115→\t}\n   116→}\n   117→\n   118→// nodeWorker processes node state messages from the node channel.\n   119→func (api *NatsAPI) nodeWorker() {\n   120→\tfor msg := range api.nodeCh {\n   121→\t\tapi.handleNodeState(msg.subject, msg.data)\n   122→\t}\n   123→}\n   124→\n   125→// StartSubscriptions registers all NATS subscriptions for Job and Node APIs.\n   126→// Messages are delivered to buffered channels and processed by worker goroutines.\n   127→// Returns an error if the NATS client is not available or subscription fails.\n   128→func (api *NatsAPI) StartSubscriptions() error {\n   129→\tclient := nats.GetClient()\n   130→\tif client == nil {\n   131→\t\tcclog.Warn(\"NATS client not available, skipping API subscriptions\")\n   132→\t\treturn nil\n   133→\t}\n   134→\n   135→\tif config.Keys.APISubjects != nil {\n   136→\t\ts := config.Keys.APISubjects\n   137→\n   138→\t\tif err := client.Subscribe(s.SubjectJobEvent, func(subject string, data []byte) {\n   139→\t\t\tapi.jobCh <- natsMessage{subject: subject, data: data}\n   140→\t\t}); err != nil {\n   141→\t\t\treturn err\n   142→\t\t}\n   143→\n   144→\t\tif err := client.Subscribe(s.SubjectNodeState, func(subject string, data []byte) {\n   145→\t\t\tapi.nodeCh <- natsMessage{subject: subject, data: data}\n   146→\t\t}); err != nil {\n   147→\t\t\treturn err\n   148→\t\t}\n   149→\n   150→\t\tcclog.Info(\"NATS API subscriptions started\")\n   151→\t}\n   152→\treturn nil\n   153→}\n   154→\n   155→// processJobEvent routes job event messages to the appropriate handler based on the \"function\" tag.\n   156→// Validates that required tags and fields are present before processing.\n   157→func (api *NatsAPI) processJobEvent(msg lp.CCMessage) {\n   158→\tfunction, ok := msg.GetTag(\"function\")\n   159→\tif !ok {\n   160→\t\tcclog.Errorf(\"Job event is missing required tag 'function': measurement=%s\", msg.Name())\n   161→\t\treturn\n   162→\t}\n   163→\n   164→\tswitch function {\n   165→\tcase \"start_job\":\n   166→\t\tv, ok := msg.GetEventValue()\n   167→\t\tif !ok {\n   168→\t\t\tcclog.Errorf(\"Job start event is missing event field with JSON payload\")\n   169→\t\t\treturn\n   170→\t\t}\n   171→\t\tapi.handleStartJob(v)\n   172→\n   173→\tcase \"stop_job\":\n   174→\t\tv, ok := msg.GetEventValue()\n   175→\t\tif !ok {\n   176→\t\t\tcclog.Errorf(\"Job stop event is missing event field with JSON payload\")\n   177→\t\t\treturn\n   178→\t\t}\n   179→\t\tapi.handleStopJob(v)\n   180→\n   181→\tdefault:\n   182→\t\tcclog.Warnf(\"Unknown job event function '%s', expected 'start_job' or 'stop_job'\", function)\n   183→\t}\n   184→}\n   185→\n   186→// handleJobEvent processes job-related messages received via NATS using InfluxDB line protocol.\n   187→// The message must be in line protocol format with measurement=\"job\" and include:\n   188→//   - tag \"function\" with value \"start_job\" or \"stop_job\"\n   189→//   - field \"event\" containing JSON payload (schema.Job or StopJobAPIRequest)\n   190→//\n   191→// Example: job,function=start_job event=\"{\\\"jobId\\\":1001,...}\" 1234567890000000000\n   192→func (api *NatsAPI) handleJobEvent(subject string, data []byte) {\n   193→\tif len(data) == 0 {\n   194→\t\tcclog.Warnf(\"NATS %s: received empty message\", subject)\n   195→\t\treturn\n   196→\t}\n   197→\n   198→\td := influx.NewDecoderWithBytes(data)\n   199→\n   200→\tfor d.Next() {\n   201→\t\tm, err := receivers.DecodeInfluxMessage(d)\n   202→\t\tif err != nil {\n   203→\t\t\tcclog.Errorf(\"NATS %s: failed to decode InfluxDB line protocol message: %v\", subject, err)\n   204→\t\t\treturn\n   205→\t\t}\n   206→\n   207→\t\tif !m.IsEvent() {\n   208→\t\t\tcclog.Debugf(\"NATS %s: received non-event message, skipping\", subject)\n   209→\t\t\tcontinue\n   210→\t\t}\n   211→\n   212→\t\tif m.Name() == \"job\" {\n   213→\t\t\tapi.processJobEvent(m)\n   214→\t\t} else {\n   215→\t\t\tcclog.Debugf(\"NATS %s: unexpected measurement name '%s', expected 'job'\", subject, m.Name())\n   216→\t\t}\n   217→\t}\n   218→}\n   219→\n   220→// handleStartJob processes job start messages received via NATS.\n   221→// The payload parameter contains JSON following the schema.Job structure.\n   222→// Jobs are validated, checked for duplicates, and inserted into the database.\n   223→func (api *NatsAPI) handleStartJob(payload string) {\n   224→\tif payload == \"\" {\n   225→\t\tcclog.Error(\"NATS start job: payload is empty\")\n   226→\t\treturn\n   227→\t}\n   228→\treq := schema.Job{\n   229→\t\tShared:           \"none\",\n   230→\t\tMonitoringStatus: schema.MonitoringStatusRunningOrArchiving,\n   231→\t}\n   232→\n   233→\tdec := json.NewDecoder(strings.NewReader(payload))\n   234→\tdec.DisallowUnknownFields()\n   235→\tif err := dec.Decode(&req); err != nil {\n   236→\t\tcclog.Errorf(\"NATS start job: parsing request failed: %v\", err)\n   237→\t\treturn\n   238→\t}\n   239→\n   240→\tcclog.Debugf(\"NATS start job: %s\", req.GoString())\n   241→\treq.State = schema.JobStateRunning\n   242→\n   243→\tif err := importer.SanityChecks(&req); err != nil {\n   244→\t\tcclog.Errorf(\"NATS start job: sanity check failed: %v\", err)\n   245→\t\treturn\n   246→\t}\n   247→\n   248→\tvar unlockOnce sync.Once\n   249→\tapi.RepositoryMutex.Lock()\n   250→\tdefer unlockOnce.Do(api.RepositoryMutex.Unlock)\n   251→\n   252→\tjobs, err := api.JobRepository.FindAll(&req.JobID, &req.Cluster, nil)\n   253→\tif err != nil && err != sql.ErrNoRows {\n   254→\t\tcclog.Errorf(\"NATS start job: checking for duplicate failed: %v\", err)\n   255→\t\treturn\n   256→\t}\n   257→\tif err == nil {\n   258→\t\tfor _, job := range jobs {\n   259→\t\t\tif (req.StartTime - job.StartTime) < secondsPerDay {\n   260→\t\t\t\tcclog.Errorf(\"NATS start job: job with jobId %d, cluster %s already exists (dbid: %d)\",\n   261→\t\t\t\t\treq.JobID, req.Cluster, job.ID)\n   262→\t\t\t\treturn\n   263→\t\t\t}\n   264→\t\t}\n   265→\t}\n   266→\n   267→\t// When tags are present, insert directly into the job table so that the\n   268→\t// returned ID can be used with AddTagOrCreate (which queries the job table).\n   269→\tvar id int64\n   270→\tif len(req.Tags) > 0 {\n   271→\t\tid, err = api.JobRepository.StartDirect(&req)\n   272→\t} else {\n   273→\t\tid, err = api.JobRepository.Start(&req)\n   274→\t}\n   275→\tif err != nil {\n   276→\t\tcclog.Errorf(\"NATS start job: insert into database failed: %v\", err)\n   277→\t\treturn\n   278→\t}\n   279→\tunlockOnce.Do(api.RepositoryMutex.Unlock)\n   280→\n   281→\tfor _, tag := range req.Tags {\n   282→\t\tif _, err := api.JobRepository.AddTagOrCreate(nil, id, tag.Type, tag.Name, tag.Scope); err != nil {\n   283→\t\t\tcclog.Errorf(\"NATS start job: adding tag to new job %d failed: %v\", id, err)\n   284→\t\t\treturn\n   285→\t\t}\n   286→\t}\n   287→\n   288→\tcclog.Infof(\"NATS: new job (id: %d): cluster=%s, jobId=%d, user=%s, startTime=%d\",\n   289→\t\tid, req.Cluster, req.JobID, req.User, req.StartTime)\n   290→}\n   291→\n   292→// handleStopJob processes job stop messages received via NATS.\n   293→// The payload parameter contains JSON following the StopJobAPIRequest structure.\n   294→// The job is marked as stopped in the database and archiving is triggered if monitoring is enabled.\n   295→func (api *NatsAPI) handleStopJob(payload string) {\n   296→\tif payload == \"\" {\n   297→\t\tcclog.Error(\"NATS stop job: payload is empty\")\n   298→\t\treturn\n   299→\t}\n   300→\tvar req StopJobAPIRequest\n   301→\n   302→\tdec := json.NewDecoder(strings.NewReader(payload))\n   303→\tdec.DisallowUnknownFields()\n   304→\tif err := dec.Decode(&req); err != nil {\n   305→\t\tcclog.Errorf(\"NATS job stop: parsing request failed: %v\", err)\n   306→\t\treturn\n   307→\t}\n   308→\n   309→\tif req.JobID == nil {\n   310→\t\tcclog.Errorf(\"NATS job stop: the field 'jobId' is required\")\n   311→\t\treturn\n   312→\t}\n   313→\n   314→\tisCached := false\n   315→\tjob, err := api.JobRepository.FindCached(req.JobID, req.Cluster, req.StartTime)\n   316→\tif err != nil {\n   317→\t\t// Not in cache, try main job table\n   318→\t\tjob, err = api.JobRepository.Find(req.JobID, req.Cluster, req.StartTime)\n   319→\t\tif err != nil {\n   320→\t\t\tcclog.Errorf(\"NATS job stop: finding job failed: %v\", err)\n   321→\t\t\treturn\n   322→\t\t}\n   323→\t} else {\n   324→\t\tisCached = true\n   325→\t}\n   326→\n   327→\tif job.State != schema.JobStateRunning {\n   328→\t\tcclog.Errorf(\"NATS job stop: jobId %d (id %d) on %s: job has already been stopped (state is: %s)\",\n   329→\t\t\tjob.JobID, job.ID, job.Cluster, job.State)\n   330→\t\treturn\n   331→\t}\n   332→\n   333→\tif job.StartTime > req.StopTime {\n   334→\t\tcclog.Errorf(\"NATS job stop: jobId %d (id %d) on %s: stopTime %d must be >= startTime %d\",\n   335→\t\t\tjob.JobID, job.ID, job.Cluster, req.StopTime, job.StartTime)\n   336→\t\treturn\n   337→\t}\n   338→\n   339→\tif req.State != \"\" && !req.State.Valid() {\n   340→\t\tcclog.Errorf(\"NATS job stop: jobId %d (id %d) on %s: invalid job state: %#v\",\n   341→\t\t\tjob.JobID, job.ID, job.Cluster, req.State)\n   342→\t\treturn\n   343→\t} else if req.State == \"\" {\n   344→\t\treq.State = schema.JobStateCompleted\n   345→\t}\n   346→\n   347→\tjob.Duration = int32(req.StopTime - job.StartTime)\n   348→\tjob.State = req.State\n   349→\tapi.JobRepository.Mutex.Lock()\n   350→\tdefer api.JobRepository.Mutex.Unlock()\n   351→\n   352→\t// If the job is still in job_cache, transfer it to the job table first\n   353→\tif isCached {\n   354→\t\tnewID, err := api.JobRepository.TransferCachedJobToMain(*job.ID)\n   355→\t\tif err != nil {\n   356→\t\t\tcclog.Errorf(\"NATS job stop: jobId %d (id %d) on %s: transferring cached job failed: %v\",\n   357→\t\t\t\tjob.JobID, *job.ID, job.Cluster, err)\n   358→\t\t\treturn\n   359→\t\t}\n   360→\t\tcclog.Infof(\"NATS: transferred cached job to main table: old id %d -> new id %d (jobId=%d)\", *job.ID, newID, job.JobID)\n   361→\t\tjob.ID = &newID\n   362→\t}\n   363→\n   364→\tif err := api.JobRepository.Stop(*job.ID, job.Duration, job.State, job.MonitoringStatus); err != nil {\n   365→\t\tcclog.Errorf(\"NATS job stop: jobId %d (id %d) on %s: marking job as '%s' failed: %v\",\n   366→\t\t\tjob.JobID, *job.ID, job.Cluster, job.State, err)\n   367→\t\treturn\n   368→\t}\n   369→\n   370→\tcclog.Infof(\"NATS: archiving job (dbid: %d): cluster=%s, jobId=%d, user=%s, startTime=%d, duration=%d, state=%s\",\n   371→\t\t*job.ID, job.Cluster, job.JobID, job.User, job.StartTime, job.Duration, job.State)\n   372→\n   373→\tif job.MonitoringStatus == schema.MonitoringStatusDisabled {\n   374→\t\treturn\n   375→\t}\n   376→\n   377→\tarchiver.TriggerArchiving(job)\n   378→}\n   379→\n   380→// processNodestateEvent extracts and processes node state data from the InfluxDB message.\n   381→// Updates node states in the repository for all nodes in the payload.\n   382→func (api *NatsAPI) processNodestateEvent(msg lp.CCMessage) {\n   383→\tv, ok := msg.GetEventValue()\n   384→\tif !ok {\n   385→\t\tcclog.Errorf(\"Nodestate event is missing event field with JSON payload\")\n   386→\t\treturn\n   387→\t}\n   388→\n   389→\tvar req UpdateNodeStatesRequest\n   390→\n   391→\tdec := json.NewDecoder(strings.NewReader(v))\n   392→\tdec.DisallowUnknownFields()\n   393→\tif err := dec.Decode(&req); err != nil {\n   394→\t\tcclog.Errorf(\"NATS nodestate: parsing request failed: %v\", err)\n   395→\t\treturn\n   396→\t}\n   397→\n   398→\trepo := repository.GetNodeRepository()\n   399→\trequestReceived := time.Now().Unix()\n   400→\n   401→\tupdates := make([]repository.NodeStateUpdate, 0, len(req.Nodes))\n   402→\tfor _, node := range req.Nodes {\n   403→\t\tstate := determineState(node.States)\n   404→\t\tnodeState := schema.NodeStateDB{\n   405→\t\t\tTimeStamp:       requestReceived,\n   406→\t\t\tNodeState:       state,\n   407→\t\t\tCpusAllocated:   node.CpusAllocated,\n   408→\t\t\tMemoryAllocated: node.MemoryAllocated,\n   409→\t\t\tGpusAllocated:   node.GpusAllocated,\n   410→\t\t\tHealthState:     schema.MonitoringStateFull,\n   411→\t\t\tJobsRunning:     node.JobsRunning,\n   412→\t\t}\n   413→\t\tupdates = append(updates, repository.NodeStateUpdate{\n   414→\t\t\tHostname:  node.Hostname,\n   415→\t\t\tCluster:   req.Cluster,\n   416→\t\t\tNodeState: &nodeState,\n   417→\t\t})\n   418→\t}\n   419→\n   420→\tif err := repo.BatchUpdateNodeStates(updates); err != nil {\n   421→\t\tcclog.Errorf(\"NATS nodestate: batch update for cluster %s failed: %v\", req.Cluster, err)\n   422→\t}\n   423→\n   424→\tcclog.Debugf(\"NATS nodestate: updated %d node states for cluster %s\", len(req.Nodes), req.Cluster)\n   425→}\n   426→\n   427→// handleNodeState processes node state update messages received via NATS using InfluxDB line protocol.\n   428→// The message must be in line protocol format with measurement=\"nodestate\" and include:\n   429→//   - field \"event\" containing JSON payload (UpdateNodeStatesRequest)\n   430→//\n   431→// Example: nodestate event=\"{\\\"cluster\\\":\\\"testcluster\\\",\\\"nodes\\\":[...]}\" 1234567890000000000\n   432→func (api *NatsAPI) handleNodeState(subject string, data []byte) {\n   433→\tif len(data) == 0 {\n   434→\t\tcclog.Warnf(\"NATS %s: received empty message\", subject)\n   435→\t\treturn\n   436→\t}\n   437→\n   438→\td := influx.NewDecoderWithBytes(data)\n   439→\n   440→\tfor d.Next() {\n   441→\t\tm, err := receivers.DecodeInfluxMessage(d)\n   442→\t\tif err != nil {\n   443→\t\t\tcclog.Errorf(\"NATS %s: failed to decode InfluxDB line protocol message: %v\", subject, err)\n   444→\t\t\treturn\n   445→\t\t}\n   446→\n   447→\t\tif !m.IsEvent() {\n   448→\t\t\tcclog.Warnf(\"NATS %s: received non-event message, skipping\", subject)\n   449→\t\t\tcontinue\n   450→\t\t}\n   451→\n   452→\t\tif m.Name() == \"nodestate\" {\n   453→\t\t\tapi.processNodestateEvent(m)\n   454→\t\t} else {\n   455→\t\t\tcclog.Warnf(\"NATS %s: unexpected measurement name '%s', expected 'nodestate'\", subject, m.Name())\n   456→\t\t}\n   457→\t}\n   458→}\n   459→"}]},"uuid":"ce8667dc-45aa-4a64-9769-1f862599d2b6","timestamp":"2026-03-16T11:01:44.983Z","toolUseResult":{"type":"text","file":{"filePath":"/Users/jan/prg/ClusterCockpit/cc-backend/internal/api/nats.go","content":"// Copyright (C) NHR@FAU, University Erlangen-Nuremberg.\n// All rights reserved. This file is part of cc-backend.\n// Use of this source code is governed by a MIT-style\n// license that can be found in the LICENSE file.\n\npackage api\n\nimport (\n\t\"database/sql\"\n\t\"encoding/json\"\n\t\"strings\"\n\t\"sync\"\n\t\"time\"\n\n\t\"github.com/ClusterCockpit/cc-backend/internal/archiver\"\n\t\"github.com/ClusterCockpit/cc-backend/internal/config\"\n\t\"github.com/ClusterCockpit/cc-backend/internal/importer\"\n\t\"github.com/ClusterCockpit/cc-backend/internal/repository\"\n\tcclog \"github.com/ClusterCockpit/cc-lib/v2/ccLogger\"\n\tlp \"github.com/ClusterCockpit/cc-lib/v2/ccMessage\"\n\t\"github.com/ClusterCockpit/cc-lib/v2/nats\"\n\t\"github.com/ClusterCockpit/cc-lib/v2/receivers\"\n\t\"github.com/ClusterCockpit/cc-lib/v2/schema\"\n\tinflux \"github.com/ClusterCockpit/cc-line-protocol/v2/lineprotocol\"\n)\n\n// natsMessage wraps a raw NATS message with its subject for channel-based processing.\ntype natsMessage struct {\n\tsubject string\n\tdata    []byte\n}\n\n// NatsAPI provides NATS subscription-based handlers for Job and Node operations.\n// It mirrors the functionality of the REST API but uses NATS messaging with\n// InfluxDB line protocol as the message format.\n//\n// # Message Format\n//\n// All NATS messages use InfluxDB line protocol format (https://docs.influxdata.com/influxdb/v2.0/reference/syntax/line-protocol/)\n// with the following structure:\n//\n//\tmeasurement,tag1=value1,tag2=value2 field1=value1,field2=value2 timestamp\n//\n// # Job Events\n//\n// Job start/stop events use the \"job\" measurement with a \"function\" tag to distinguish operations:\n//\n//\tjob,function=start_job event=\"{...JSON payload...}\" <timestamp>\n//\tjob,function=stop_job event=\"{...JSON payload...}\" <timestamp>\n//\n// The JSON payload in the \"event\" field follows the schema.Job or StopJobAPIRequest structure.\n//\n// Example job start message:\n//\n//\tjob,function=start_job event=\"{\\\"jobId\\\":1001,\\\"user\\\":\\\"testuser\\\",\\\"cluster\\\":\\\"testcluster\\\",...}\" 1234567890000000000\n//\n// # Node State Events\n//\n// Node state updates use the \"nodestate\" measurement with cluster information:\n//\n//\tnodestate event=\"{...JSON payload...}\" <timestamp>\n//\n// The JSON payload follows the UpdateNodeStatesRequest structure.\n//\n// Example node state message:\n//\n//\tnodestate event=\"{\\\"cluster\\\":\\\"testcluster\\\",\\\"nodes\\\":[{\\\"hostname\\\":\\\"node01\\\",\\\"states\\\":[\\\"idle\\\"]}]}\" 1234567890000000000\ntype NatsAPI struct {\n\tJobRepository *repository.JobRepository\n\t// RepositoryMutex protects job creation operations from race conditions\n\t// when checking for duplicate jobs during startJob calls.\n\tRepositoryMutex sync.Mutex\n\t// jobCh receives job event messages for processing by worker goroutines.\n\tjobCh chan natsMessage\n\t// nodeCh receives node state messages for processing by worker goroutines.\n\tnodeCh chan natsMessage\n}\n\n// NewNatsAPI creates a new NatsAPI instance with channel-based worker pools.\n// Concurrency is configured via NATSConfig (defaults: JobConcurrency=8, NodeConcurrency=2).\nfunc NewNatsAPI() *NatsAPI {\n\tjobConc := 8\n\tnodeConc := 2\n\n\tif s := config.Keys.APISubjects; s != nil {\n\t\tif s.JobConcurrency > 0 {\n\t\t\tjobConc = s.JobConcurrency\n\t\t}\n\t\tif s.NodeConcurrency > 0 {\n\t\t\tnodeConc = s.NodeConcurrency\n\t\t}\n\t}\n\n\tapi := &NatsAPI{\n\t\tJobRepository: repository.GetJobRepository(),\n\t\tjobCh:         make(chan natsMessage, jobConc),\n\t\tnodeCh:        make(chan natsMessage, nodeConc),\n\t}\n\n\t// Start worker goroutines\n\tfor range jobConc {\n\t\tgo api.jobWorker()\n\t}\n\tfor range nodeConc {\n\t\tgo api.nodeWorker()\n\t}\n\n\treturn api\n}\n\n// jobWorker processes job event messages from the job channel.\nfunc (api *NatsAPI) jobWorker() {\n\tfor msg := range api.jobCh {\n\t\tapi.handleJobEvent(msg.subject, msg.data)\n\t}\n}\n\n// nodeWorker processes node state messages from the node channel.\nfunc (api *NatsAPI) nodeWorker() {\n\tfor msg := range api.nodeCh {\n\t\tapi.handleNodeState(msg.subject, msg.data)\n\t}\n}\n\n// StartSubscriptions registers all NATS subscriptions for Job and Node APIs.\n// Messages are delivered to buffered channels and processed by worker goroutines.\n// Returns an error if the NATS client is not available or subscription fails.\nfunc (api *NatsAPI) StartSubscriptions() error {\n\tclient := nats.GetClient()\n\tif client == nil {\n\t\tcclog.Warn(\"NATS client not available, skipping API subscriptions\")\n\t\treturn nil\n\t}\n\n\tif config.Keys.APISubjects != nil {\n\t\ts := config.Keys.APISubjects\n\n\t\tif err := client.Subscribe(s.SubjectJobEvent, func(subject string, data []byte) {\n\t\t\tapi.jobCh <- natsMessage{subject: subject, data: data}\n\t\t}); err != nil {\n\t\t\treturn err\n\t\t}\n\n\t\tif err := client.Subscribe(s.SubjectNodeState, func(subject string, data []byte) {\n\t\t\tapi.nodeCh <- natsMessage{subject: subject, data: data}\n\t\t}); err != nil {\n\t\t\treturn err\n\t\t}\n\n\t\tcclog.Info(\"NATS API subscriptions started\")\n\t}\n\treturn nil\n}\n\n// processJobEvent routes job event messages to the appropriate handler based on the \"function\" tag.\n// Validates that required tags and fields are present before processing.\nfunc (api *NatsAPI) processJobEvent(msg lp.CCMessage) {\n\tfunction, ok := msg.GetTag(\"function\")\n\tif !ok {\n\t\tcclog.Errorf(\"Job event is missing required tag 'function': measurement=%s\", msg.Name())\n\t\treturn\n\t}\n\n\tswitch function {\n\tcase \"start_job\":\n\t\tv, ok := msg.GetEventValue()\n\t\tif !ok {\n\t\t\tcclog.Errorf(\"Job start event is missing event field with JSON payload\")\n\t\t\treturn\n\t\t}\n\t\tapi.handleStartJob(v)\n\n\tcase \"stop_job\":\n\t\tv, ok := msg.GetEventValue()\n\t\tif !ok {\n\t\t\tcclog.Errorf(\"Job stop event is missing event field with JSON payload\")\n\t\t\treturn\n\t\t}\n\t\tapi.handleStopJob(v)\n\n\tdefault:\n\t\tcclog.Warnf(\"Unknown job event function '%s', expected 'start_job' or 'stop_job'\", function)\n\t}\n}\n\n// handleJobEvent processes job-related messages received via NATS using InfluxDB line protocol.\n// The message must be in line protocol format with measurement=\"job\" and include:\n//   - tag \"function\" with value \"start_job\" or \"stop_job\"\n//   - field \"event\" containing JSON payload (schema.Job or StopJobAPIRequest)\n//\n// Example: job,function=start_job event=\"{\\\"jobId\\\":1001,...}\" 1234567890000000000\nfunc (api *NatsAPI) handleJobEvent(subject string, data []byte) {\n\tif len(data) == 0 {\n\t\tcclog.Warnf(\"NATS %s: received empty message\", subject)\n\t\treturn\n\t}\n\n\td := influx.NewDecoderWithBytes(data)\n\n\tfor d.Next() {\n\t\tm, err := receivers.DecodeInfluxMessage(d)\n\t\tif err != nil {\n\t\t\tcclog.Errorf(\"NATS %s: failed to decode InfluxDB line protocol message: %v\", subject, err)\n\t\t\treturn\n\t\t}\n\n\t\tif !m.IsEvent() {\n\t\t\tcclog.Debugf(\"NATS %s: received non-event message, skipping\", subject)\n\t\t\tcontinue\n\t\t}\n\n\t\tif m.Name() == \"job\" {\n\t\t\tapi.processJobEvent(m)\n\t\t} else {\n\t\t\tcclog.Debugf(\"NATS %s: unexpected measurement name '%s', expected 'job'\", subject, m.Name())\n\t\t}\n\t}\n}\n\n// handleStartJob processes job start messages received via NATS.\n// The payload parameter contains JSON following the schema.Job structure.\n// Jobs are validated, checked for duplicates, and inserted into the database.\nfunc (api *NatsAPI) handleStartJob(payload string) {\n\tif payload == \"\" {\n\t\tcclog.Error(\"NATS start job: payload is empty\")\n\t\treturn\n\t}\n\treq := schema.Job{\n\t\tShared:           \"none\",\n\t\tMonitoringStatus: schema.MonitoringStatusRunningOrArchiving,\n\t}\n\n\tdec := json.NewDecoder(strings.NewReader(payload))\n\tdec.DisallowUnknownFields()\n\tif err := dec.Decode(&req); err != nil {\n\t\tcclog.Errorf(\"NATS start job: parsing request failed: %v\", err)\n\t\treturn\n\t}\n\n\tcclog.Debugf(\"NATS start job: %s\", req.GoString())\n\treq.State = schema.JobStateRunning\n\n\tif err := importer.SanityChecks(&req); err != nil {\n\t\tcclog.Errorf(\"NATS start job: sanity check failed: %v\", err)\n\t\treturn\n\t}\n\n\tvar unlockOnce sync.Once\n\tapi.RepositoryMutex.Lock()\n\tdefer unlockOnce.Do(api.RepositoryMutex.Unlock)\n\n\tjobs, err := api.JobRepository.FindAll(&req.JobID, &req.Cluster, nil)\n\tif err != nil && err != sql.ErrNoRows {\n\t\tcclog.Errorf(\"NATS start job: checking for duplicate failed: %v\", err)\n\t\treturn\n\t}\n\tif err == nil {\n\t\tfor _, job := range jobs {\n\t\t\tif (req.StartTime - job.StartTime) < secondsPerDay {\n\t\t\t\tcclog.Errorf(\"NATS start job: job with jobId %d, cluster %s already exists (dbid: %d)\",\n\t\t\t\t\treq.JobID, req.Cluster, job.ID)\n\t\t\t\treturn\n\t\t\t}\n\t\t}\n\t}\n\n\t// When tags are present, insert directly into the job table so that the\n\t// returned ID can be used with AddTagOrCreate (which queries the job table).\n\tvar id int64\n\tif len(req.Tags) > 0 {\n\t\tid, err = api.JobRepository.StartDirect(&req)\n\t} else {\n\t\tid, err = api.JobRepository.Start(&req)\n\t}\n\tif err != nil {\n\t\tcclog.Errorf(\"NATS start job: insert into database failed: %v\", err)\n\t\treturn\n\t}\n\tunlockOnce.Do(api.RepositoryMutex.Unlock)\n\n\tfor _, tag := range req.Tags {\n\t\tif _, err := api.JobRepository.AddTagOrCreate(nil, id, tag.Type, tag.Name, tag.Scope); err != nil {\n\t\t\tcclog.Errorf(\"NATS start job: adding tag to new job %d failed: %v\", id, err)\n\t\t\treturn\n\t\t}\n\t}\n\n\tcclog.Infof(\"NATS: new job (id: %d): cluster=%s, jobId=%d, user=%s, startTime=%d\",\n\t\tid, req.Cluster, req.JobID, req.User, req.StartTime)\n}\n\n// handleStopJob processes job stop messages received via NATS.\n// The payload parameter contains JSON following the StopJobAPIRequest structure.\n// The job is marked as stopped in the database and archiving is triggered if monitoring is enabled.\nfunc (api *NatsAPI) handleStopJob(payload string) {\n\tif payload == \"\" {\n\t\tcclog.Error(\"NATS stop job: payload is empty\")\n\t\treturn\n\t}\n\tvar req StopJobAPIRequest\n\n\tdec := json.NewDecoder(strings.NewReader(payload))\n\tdec.DisallowUnknownFields()\n\tif err := dec.Decode(&req); err != nil {\n\t\tcclog.Errorf(\"NATS job stop: parsing request failed: %v\", err)\n\t\treturn\n\t}\n\n\tif req.JobID == nil {\n\t\tcclog.Errorf(\"NATS job stop: the field 'jobId' is required\")\n\t\treturn\n\t}\n\n\tisCached := false\n\tjob, err := api.JobRepository.FindCached(req.JobID, req.Cluster, req.StartTime)\n\tif err != nil {\n\t\t// Not in cache, try main job table\n\t\tjob, err = api.JobRepository.Find(req.JobID, req.Cluster, req.StartTime)\n\t\tif err != nil {\n\t\t\tcclog.Errorf(\"NATS job stop: finding job failed: %v\", err)\n\t\t\treturn\n\t\t}\n\t} else {\n\t\tisCached = true\n\t}\n\n\tif job.State != schema.JobStateRunning {\n\t\tcclog.Errorf(\"NATS job stop: jobId %d (id %d) on %s: job has already been stopped (state is: %s)\",\n\t\t\tjob.JobID, job.ID, job.Cluster, job.State)\n\t\treturn\n\t}\n\n\tif job.StartTime > req.StopTime {\n\t\tcclog.Errorf(\"NATS job stop: jobId %d (id %d) on %s: stopTime %d must be >= startTime %d\",\n\t\t\tjob.JobID, job.ID, job.Cluster, req.StopTime, job.StartTime)\n\t\treturn\n\t}\n\n\tif req.State != \"\" && !req.State.Valid() {\n\t\tcclog.Errorf(\"NATS job stop: jobId %d (id %d) on %s: invalid job state: %#v\",\n\t\t\tjob.JobID, job.ID, job.Cluster, req.State)\n\t\treturn\n\t} else if req.State == \"\" {\n\t\treq.State = schema.JobStateCompleted\n\t}\n\n\tjob.Duration = int32(req.StopTime - job.StartTime)\n\tjob.State = req.State\n\tapi.JobRepository.Mutex.Lock()\n\tdefer api.JobRepository.Mutex.Unlock()\n\n\t// If the job is still in job_cache, transfer it to the job table first\n\tif isCached {\n\t\tnewID, err := api.JobRepository.TransferCachedJobToMain(*job.ID)\n\t\tif err != nil {\n\t\t\tcclog.Errorf(\"NATS job stop: jobId %d (id %d) on %s: transferring cached job failed: %v\",\n\t\t\t\tjob.JobID, *job.ID, job.Cluster, err)\n\t\t\treturn\n\t\t}\n\t\tcclog.Infof(\"NATS: transferred cached job to main table: old id %d -> new id %d (jobId=%d)\", *job.ID, newID, job.JobID)\n\t\tjob.ID = &newID\n\t}\n\n\tif err := api.JobRepository.Stop(*job.ID, job.Duration, job.State, job.MonitoringStatus); err != nil {\n\t\tcclog.Errorf(\"NATS job stop: jobId %d (id %d) on %s: marking job as '%s' failed: %v\",\n\t\t\tjob.JobID, *job.ID, job.Cluster, job.State, err)\n\t\treturn\n\t}\n\n\tcclog.Infof(\"NATS: archiving job (dbid: %d): cluster=%s, jobId=%d, user=%s, startTime=%d, duration=%d, state=%s\",\n\t\t*job.ID, job.Cluster, job.JobID, job.User, job.StartTime, job.Duration, job.State)\n\n\tif job.MonitoringStatus == schema.MonitoringStatusDisabled {\n\t\treturn\n\t}\n\n\tarchiver.TriggerArchiving(job)\n}\n\n// processNodestateEvent extracts and processes node state data from the InfluxDB message.\n// Updates node states in the repository for all nodes in the payload.\nfunc (api *NatsAPI) processNodestateEvent(msg lp.CCMessage) {\n\tv, ok := msg.GetEventValue()\n\tif !ok {\n\t\tcclog.Errorf(\"Nodestate event is missing event field with JSON payload\")\n\t\treturn\n\t}\n\n\tvar req UpdateNodeStatesRequest\n\n\tdec := json.NewDecoder(strings.NewReader(v))\n\tdec.DisallowUnknownFields()\n\tif err := dec.Decode(&req); err != nil {\n\t\tcclog.Errorf(\"NATS nodestate: parsing request failed: %v\", err)\n\t\treturn\n\t}\n\n\trepo := repository.GetNodeRepository()\n\trequestReceived := time.Now().Unix()\n\n\tupdates := make([]repository.NodeStateUpdate, 0, len(req.Nodes))\n\tfor _, node := range req.Nodes {\n\t\tstate := determineState(node.States)\n\t\tnodeState := schema.NodeStateDB{\n\t\t\tTimeStamp:       requestReceived,\n\t\t\tNodeState:       state,\n\t\t\tCpusAllocated:   node.CpusAllocated,\n\t\t\tMemoryAllocated: node.MemoryAllocated,\n\t\t\tGpusAllocated:   node.GpusAllocated,\n\t\t\tHealthState:     schema.MonitoringStateFull,\n\t\t\tJobsRunning:     node.JobsRunning,\n\t\t}\n\t\tupdates = append(updates, repository.NodeStateUpdate{\n\t\t\tHostname:  node.Hostname,\n\t\t\tCluster:   req.Cluster,\n\t\t\tNodeState: &nodeState,\n\t\t})\n\t}\n\n\tif err := repo.BatchUpdateNodeStates(updates); err != nil {\n\t\tcclog.Errorf(\"NATS nodestate: batch update for cluster %s failed: %v\", req.Cluster, err)\n\t}\n\n\tcclog.Debugf(\"NATS nodestate: updated %d node states for cluster %s\", len(req.Nodes), req.Cluster)\n}\n\n// handleNodeState processes node state update messages received via NATS using InfluxDB line protocol.\n// The message must be in line protocol format with measurement=\"nodestate\" and include:\n//   - field \"event\" containing JSON payload (UpdateNodeStatesRequest)\n//\n// Example: nodestate event=\"{\\\"cluster\\\":\\\"testcluster\\\",\\\"nodes\\\":[...]}\" 1234567890000000000\nfunc (api *NatsAPI) handleNodeState(subject string, data []byte) {\n\tif len(data) == 0 {\n\t\tcclog.Warnf(\"NATS %s: received empty message\", subject)\n\t\treturn\n\t}\n\n\td := influx.NewDecoderWithBytes(data)\n\n\tfor d.Next() {\n\t\tm, err := receivers.DecodeInfluxMessage(d)\n\t\tif err != nil {\n\t\t\tcclog.Errorf(\"NATS %s: failed to decode InfluxDB line protocol message: %v\", subject, err)\n\t\t\treturn\n\t\t}\n\n\t\tif !m.IsEvent() {\n\t\t\tcclog.Warnf(\"NATS %s: received non-event message, skipping\", subject)\n\t\t\tcontinue\n\t\t}\n\n\t\tif m.Name() == \"nodestate\" {\n\t\t\tapi.processNodestateEvent(m)\n\t\t} else {\n\t\t\tcclog.Warnf(\"NATS %s: unexpected measurement name '%s', expected 'nodestate'\", subject, m.Name())\n\t\t}\n\t}\n}\n","numLines":459,"startLine":1,"totalLines":459}},"sourceToolAssistantUUID":"10710b01-4a18-4204-bda3-b7cc53b5f7c3","userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"23bd02ee-e611-4488-a3d4-71ca93985943","version":"2.1.76","gitBranch":"hotfix","slug":"magical-sauteeing-gosling"}
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+{"parentUuid":"dd839d56-6524-4a23-a6b9-c57a0c2a7cc3","isSidechain":false,"type":"progress","data":{"type":"hook_progress","hookEvent":"PostToolUse","hookName":"PostToolUse:Read","command":"callback"},"parentToolUseID":"toolu_01QUKfqdJBfp65Z8vhVkHcQj","toolUseID":"toolu_01QUKfqdJBfp65Z8vhVkHcQj","timestamp":"2026-03-16T11:01:45.152Z","uuid":"099004b0-a4d5-4f85-8e73-57f9229c9af6","userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"23bd02ee-e611-4488-a3d4-71ca93985943","version":"2.1.76","gitBranch":"hotfix","slug":"magical-sauteeing-gosling"}
+{"parentUuid":"dd839d56-6524-4a23-a6b9-c57a0c2a7cc3","isSidechain":false,"promptId":"c2bc230a-67ed-4f5e-b42f-f832728effa2","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01QUKfqdJBfp65Z8vhVkHcQj","type":"tool_result","content":"     1→// Copyright (C) NHR@FAU, University Erlangen-Nuremberg.\n     2→// All rights reserved. This file is part of cc-backend.\n     3→// Use of this source code is governed by a MIT-style\n     4→// license that can be found in the LICENSE file.\n     5→\n     6→package api\n     7→\n     8→import (\n     9→\t\"fmt\"\n    10→\t\"maps\"\n    11→\t\"net/http\"\n    12→\t\"strings\"\n    13→\t\"time\"\n    14→\n    15→\t\"github.com/ClusterCockpit/cc-backend/internal/metricdispatch\"\n    16→\t\"github.com/ClusterCockpit/cc-backend/internal/repository\"\n    17→\t\"github.com/ClusterCockpit/cc-backend/pkg/archive\"\n    18→\t\"github.com/ClusterCockpit/cc-backend/pkg/metricstore\"\n    19→\tcclog \"github.com/ClusterCockpit/cc-lib/v2/ccLogger\"\n    20→\t\"github.com/ClusterCockpit/cc-lib/v2/schema\"\n    21→)\n    22→\n    23→type UpdateNodeStatesRequest struct {\n    24→\tNodes   []schema.NodePayload `json:\"nodes\"`\n    25→\tCluster string               `json:\"cluster\" example:\"fritz\"`\n    26→}\n    27→\n    28→// metricListToNames converts a map of metric configurations to a list of metric names\n    29→func metricListToNames(metricList map[string]*schema.Metric) []string {\n    30→\tnames := make([]string, 0, len(metricList))\n    31→\tfor name := range metricList {\n    32→\t\tnames = append(names, name)\n    33→\t}\n    34→\treturn names\n    35→}\n    36→\n    37→// this routine assumes that only one of them exists per node\n    38→func determineState(states []string) schema.SchedulerState {\n    39→\tfor _, state := range states {\n    40→\t\tswitch strings.ToLower(state) {\n    41→\t\tcase \"allocated\":\n    42→\t\t\treturn schema.NodeStateAllocated\n    43→\t\tcase \"reserved\":\n    44→\t\t\treturn schema.NodeStateReserved\n    45→\t\tcase \"idle\":\n    46→\t\t\treturn schema.NodeStateIdle\n    47→\t\tcase \"down\":\n    48→\t\t\treturn schema.NodeStateDown\n    49→\t\tcase \"mixed\":\n    50→\t\t\treturn schema.NodeStateMixed\n    51→\t\t}\n    52→\t}\n    53→\n    54→\treturn schema.NodeStateUnknown\n    55→}\n    56→\n    57→// updateNodeStates godoc\n    58→// @summary     Deliver updated Slurm node states\n    59→// @tags Nodestates\n    60→// @description Returns a JSON-encoded list of users.\n    61→// @description Required query-parameter defines if all users or only users with additional special roles are returned.\n    62→// @produce     json\n    63→// @param       request body UpdateNodeStatesRequest true \"Request body containing nodes and their states\"\n    64→// @success     200     {object} api.DefaultAPIResponse \"Success message\"\n    65→// @failure     400     {object} api.ErrorResponse      \"Bad Request\"\n    66→// @failure     401     {object} api.ErrorResponse      \"Unauthorized\"\n    67→// @failure     403     {object} api.ErrorResponse      \"Forbidden\"\n    68→// @failure     500     {object} api.ErrorResponse      \"Internal Server Error\"\n    69→// @security    ApiKeyAuth\n    70→// @router      /api/nodestats/ [post]\n    71→func (api *RestAPI) updateNodeStates(rw http.ResponseWriter, r *http.Request) {\n    72→\t// Parse request body\n    73→\treq := UpdateNodeStatesRequest{}\n    74→\tif err := decode(r.Body, &req); err != nil {\n    75→\t\thandleError(fmt.Errorf(\"parsing request body failed: %w\", err),\n    76→\t\t\thttp.StatusBadRequest, rw)\n    77→\t\treturn\n    78→\t}\n    79→\trequestReceived := time.Now().Unix()\n    80→\trepo := repository.GetNodeRepository()\n    81→\n    82→\tm := make(map[string][]string)\n    83→\tmetricNames := make(map[string][]string)\n    84→\thealthResults := make(map[string]metricstore.HealthCheckResult)\n    85→\n    86→\tstartMs := time.Now()\n    87→\n    88→\t// Step 1: Build nodeList and metricList per subcluster\n    89→\tfor _, node := range req.Nodes {\n    90→\t\tif sc, err := archive.GetSubClusterByNode(req.Cluster, node.Hostname); err == nil {\n    91→\t\t\tm[sc] = append(m[sc], node.Hostname)\n    92→\t\t}\n    93→\t}\n    94→\n    95→\tfor sc := range m {\n    96→\t\tif sc != \"\" {\n    97→\t\t\tmetricList := archive.GetMetricConfigSubCluster(req.Cluster, sc)\n    98→\t\t\tmetricNames[sc] = metricListToNames(metricList)\n    99→\t\t}\n   100→\t}\n   101→\n   102→\t// Step 2: Determine which metric store to query and perform health check\n   103→\thealthRepo, err := metricdispatch.GetHealthCheckRepo(req.Cluster)\n   104→\tif err != nil {\n   105→\t\tcclog.Warnf(\"updateNodeStates: no metric store for cluster %s, skipping health check: %v\", req.Cluster, err)\n   106→\t} else {\n   107→\t\tfor sc, nl := range m {\n   108→\t\t\tif sc != \"\" {\n   109→\t\t\t\tif results, err := healthRepo.HealthCheck(req.Cluster, nl, metricNames[sc]); err == nil {\n   110→\t\t\t\t\tmaps.Copy(healthResults, results)\n   111→\t\t\t\t}\n   112→\t\t\t}\n   113→\t\t}\n   114→\t}\n   115→\n   116→\tcclog.Debugf(\"Timer updateNodeStates, MemStore HealthCheck: %s\", time.Since(startMs))\n   117→\tstartDB := time.Now()\n   118→\n   119→\tupdates := make([]repository.NodeStateUpdate, 0, len(req.Nodes))\n   120→\tfor _, node := range req.Nodes {\n   121→\t\tstate := determineState(node.States)\n   122→\t\thealthState := schema.MonitoringStateFailed\n   123→\t\tvar healthMetrics string\n   124→\t\tif result, ok := healthResults[node.Hostname]; ok {\n   125→\t\t\thealthState = result.State\n   126→\t\t\thealthMetrics = result.HealthMetrics\n   127→\t\t}\n   128→\t\tnodeState := schema.NodeStateDB{\n   129→\t\t\tTimeStamp:       requestReceived,\n   130→\t\t\tNodeState:       state,\n   131→\t\t\tCpusAllocated:   node.CpusAllocated,\n   132→\t\t\tMemoryAllocated: node.MemoryAllocated,\n   133→\t\t\tGpusAllocated:   node.GpusAllocated,\n   134→\t\t\tHealthState:     healthState,\n   135→\t\t\tHealthMetrics:   healthMetrics,\n   136→\t\t\tJobsRunning:     node.JobsRunning,\n   137→\t\t}\n   138→\t\tupdates = append(updates, repository.NodeStateUpdate{\n   139→\t\t\tHostname:  node.Hostname,\n   140→\t\t\tCluster:   req.Cluster,\n   141→\t\t\tNodeState: &nodeState,\n   142→\t\t})\n   143→\t}\n   144→\n   145→\tif err := repo.BatchUpdateNodeStates(updates); err != nil {\n   146→\t\tcclog.Errorf(\"updateNodeStates: batch update for cluster %s failed: %v\", req.Cluster, err)\n   147→\t}\n   148→\n   149→\tcclog.Debugf(\"Timer updateNodeStates, SQLite Inserts: %s\", time.Since(startDB))\n   150→}\n   151→"}]},"uuid":"788f5677-70c3-4f2a-8231-4d365eb0e476","timestamp":"2026-03-16T11:01:45.151Z","toolUseResult":{"type":"text","file":{"filePath":"/Users/jan/prg/ClusterCockpit/cc-backend/internal/api/node.go","content":"// Copyright (C) NHR@FAU, University Erlangen-Nuremberg.\n// All rights reserved. This file is part of cc-backend.\n// Use of this source code is governed by a MIT-style\n// license that can be found in the LICENSE file.\n\npackage api\n\nimport (\n\t\"fmt\"\n\t\"maps\"\n\t\"net/http\"\n\t\"strings\"\n\t\"time\"\n\n\t\"github.com/ClusterCockpit/cc-backend/internal/metricdispatch\"\n\t\"github.com/ClusterCockpit/cc-backend/internal/repository\"\n\t\"github.com/ClusterCockpit/cc-backend/pkg/archive\"\n\t\"github.com/ClusterCockpit/cc-backend/pkg/metricstore\"\n\tcclog \"github.com/ClusterCockpit/cc-lib/v2/ccLogger\"\n\t\"github.com/ClusterCockpit/cc-lib/v2/schema\"\n)\n\ntype UpdateNodeStatesRequest struct {\n\tNodes   []schema.NodePayload `json:\"nodes\"`\n\tCluster string               `json:\"cluster\" example:\"fritz\"`\n}\n\n// metricListToNames converts a map of metric configurations to a list of metric names\nfunc metricListToNames(metricList map[string]*schema.Metric) []string {\n\tnames := make([]string, 0, len(metricList))\n\tfor name := range metricList {\n\t\tnames = append(names, name)\n\t}\n\treturn names\n}\n\n// this routine assumes that only one of them exists per node\nfunc determineState(states []string) schema.SchedulerState {\n\tfor _, state := range states {\n\t\tswitch strings.ToLower(state) {\n\t\tcase \"allocated\":\n\t\t\treturn schema.NodeStateAllocated\n\t\tcase \"reserved\":\n\t\t\treturn schema.NodeStateReserved\n\t\tcase \"idle\":\n\t\t\treturn schema.NodeStateIdle\n\t\tcase \"down\":\n\t\t\treturn schema.NodeStateDown\n\t\tcase \"mixed\":\n\t\t\treturn schema.NodeStateMixed\n\t\t}\n\t}\n\n\treturn schema.NodeStateUnknown\n}\n\n// updateNodeStates godoc\n// @summary     Deliver updated Slurm node states\n// @tags Nodestates\n// @description Returns a JSON-encoded list of users.\n// @description Required query-parameter defines if all users or only users with additional special roles are returned.\n// @produce     json\n// @param       request body UpdateNodeStatesRequest true \"Request body containing nodes and their states\"\n// @success     200     {object} api.DefaultAPIResponse \"Success message\"\n// @failure     400     {object} api.ErrorResponse      \"Bad Request\"\n// @failure     401     {object} api.ErrorResponse      \"Unauthorized\"\n// @failure     403     {object} api.ErrorResponse      \"Forbidden\"\n// @failure     500     {object} api.ErrorResponse      \"Internal Server Error\"\n// @security    ApiKeyAuth\n// @router      /api/nodestats/ [post]\nfunc (api *RestAPI) updateNodeStates(rw http.ResponseWriter, r *http.Request) {\n\t// Parse request body\n\treq := UpdateNodeStatesRequest{}\n\tif err := decode(r.Body, &req); err != nil {\n\t\thandleError(fmt.Errorf(\"parsing request body failed: %w\", err),\n\t\t\thttp.StatusBadRequest, rw)\n\t\treturn\n\t}\n\trequestReceived := time.Now().Unix()\n\trepo := repository.GetNodeRepository()\n\n\tm := make(map[string][]string)\n\tmetricNames := make(map[string][]string)\n\thealthResults := make(map[string]metricstore.HealthCheckResult)\n\n\tstartMs := time.Now()\n\n\t// Step 1: Build nodeList and metricList per subcluster\n\tfor _, node := range req.Nodes {\n\t\tif sc, err := archive.GetSubClusterByNode(req.Cluster, node.Hostname); err == nil {\n\t\t\tm[sc] = append(m[sc], node.Hostname)\n\t\t}\n\t}\n\n\tfor sc := range m {\n\t\tif sc != \"\" {\n\t\t\tmetricList := archive.GetMetricConfigSubCluster(req.Cluster, sc)\n\t\t\tmetricNames[sc] = metricListToNames(metricList)\n\t\t}\n\t}\n\n\t// Step 2: Determine which metric store to query and perform health check\n\thealthRepo, err := metricdispatch.GetHealthCheckRepo(req.Cluster)\n\tif err != nil {\n\t\tcclog.Warnf(\"updateNodeStates: no metric store for cluster %s, skipping health check: %v\", req.Cluster, err)\n\t} else {\n\t\tfor sc, nl := range m {\n\t\t\tif sc != \"\" {\n\t\t\t\tif results, err := healthRepo.HealthCheck(req.Cluster, nl, metricNames[sc]); err == nil {\n\t\t\t\t\tmaps.Copy(healthResults, results)\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\tcclog.Debugf(\"Timer updateNodeStates, MemStore HealthCheck: %s\", time.Since(startMs))\n\tstartDB := time.Now()\n\n\tupdates := make([]repository.NodeStateUpdate, 0, len(req.Nodes))\n\tfor _, node := range req.Nodes {\n\t\tstate := determineState(node.States)\n\t\thealthState := schema.MonitoringStateFailed\n\t\tvar healthMetrics string\n\t\tif result, ok := healthResults[node.Hostname]; ok {\n\t\t\thealthState = result.State\n\t\t\thealthMetrics = result.HealthMetrics\n\t\t}\n\t\tnodeState := schema.NodeStateDB{\n\t\t\tTimeStamp:       requestReceived,\n\t\t\tNodeState:       state,\n\t\t\tCpusAllocated:   node.CpusAllocated,\n\t\t\tMemoryAllocated: node.MemoryAllocated,\n\t\t\tGpusAllocated:   node.GpusAllocated,\n\t\t\tHealthState:     healthState,\n\t\t\tHealthMetrics:   healthMetrics,\n\t\t\tJobsRunning:     node.JobsRunning,\n\t\t}\n\t\tupdates = append(updates, repository.NodeStateUpdate{\n\t\t\tHostname:  node.Hostname,\n\t\t\tCluster:   req.Cluster,\n\t\t\tNodeState: &nodeState,\n\t\t})\n\t}\n\n\tif err := repo.BatchUpdateNodeStates(updates); err != nil {\n\t\tcclog.Errorf(\"updateNodeStates: batch update for cluster %s failed: %v\", req.Cluster, err)\n\t}\n\n\tcclog.Debugf(\"Timer updateNodeStates, SQLite Inserts: %s\", time.Since(startDB))\n}\n","numLines":151,"startLine":1,"totalLines":151}},"sourceToolAssistantUUID":"dd839d56-6524-4a23-a6b9-c57a0c2a7cc3","userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"23bd02ee-e611-4488-a3d4-71ca93985943","version":"2.1.76","gitBranch":"hotfix","slug":"magical-sauteeing-gosling"}
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This file is part of cc-backend.\n// Use of this source code is governed by a MIT-style\n// license that can be found in the LICENSE file.\n\npackage api\n\nimport (\n\t\"database/sql\"\n\t\"encoding/json\"\n\t\"strings\"\n\t\"sync\"\n\t\"time\"\n\n\t\"github.com/ClusterCockpit/cc-backend/internal/archiver\"\n\t\"github.com/ClusterCockpit/cc-backend/internal/config\"\n\t\"github.com/ClusterCockpit/cc-backend/internal/importer\"\n\t\"github.com/ClusterCockpit/cc-backend/internal/repository\"\n\tcclog \"github.com/ClusterCockpit/cc-lib/v2/ccLogger\"\n\tlp \"github.com/ClusterCockpit/cc-lib/v2/ccMessage\"\n\t\"github.com/ClusterCockpit/cc-lib/v2/nats\"\n\t\"github.com/ClusterCockpit/cc-lib/v2/receivers\"\n\t\"github.com/ClusterCockpit/cc-lib/v2/schema\"\n\tinflux \"github.com/ClusterCockpit/cc-line-protocol/v2/lineprotocol\"\n)\n\n// natsMessage wraps a raw NATS message with its subject for channel-based processing.\ntype natsMessage struct {\n\tsubject string\n\tdata    []byte\n}\n\n// NatsAPI provides NATS subscription-based handlers for Job and Node operations.\n// It mirrors the functionality of the REST API but uses NATS messaging with\n// InfluxDB line protocol as the message format.\n//\n// # Message Format\n//\n// All NATS messages use InfluxDB line protocol format (https://docs.influxdata.com/influxdb/v2.0/reference/syntax/line-protocol/)\n// with the following structure:\n//\n//\tmeasurement,tag1=value1,tag2=value2 field1=value1,field2=value2 timestamp\n//\n// # Job Events\n//\n// Job start/stop events use the \"job\" measurement with a \"function\" tag to distinguish operations:\n//\n//\tjob,function=start_job event=\"{...JSON payload...}\" <timestamp>\n//\tjob,function=stop_job event=\"{...JSON payload...}\" <timestamp>\n//\n// The JSON payload in the \"event\" field follows the schema.Job or StopJobAPIRequest structure.\n//\n// Example job start message:\n//\n//\tjob,function=start_job event=\"{\\\"jobId\\\":1001,\\\"user\\\":\\\"testuser\\\",\\\"cluster\\\":\\\"testcluster\\\",...}\" 1234567890000000000\n//\n// # Node State Events\n//\n// Node state updates use the \"nodestate\" measurement with cluster information:\n//\n//\tnodestate event=\"{...JSON payload...}\" <timestamp>\n//\n// The JSON payload follows the UpdateNodeStatesRequest structure.\n//\n// Example node state message:\n//\n//\tnodestate event=\"{\\\"cluster\\\":\\\"testcluster\\\",\\\"nodes\\\":[{\\\"hostname\\\":\\\"node01\\\",\\\"states\\\":[\\\"idle\\\"]}]}\" 1234567890000000000\ntype NatsAPI struct {\n\tJobRepository *repository.JobRepository\n\t// RepositoryMutex protects job creation operations from race conditions\n\t// when checking for duplicate jobs during startJob calls.\n\tRepositoryMutex sync.Mutex\n\t// jobCh receives job event messages for processing by worker goroutines.\n\tjobCh chan natsMessage\n\t// nodeCh receives node state messages for processing by worker goroutines.\n\tnodeCh chan natsMessage\n}\n\n// NewNatsAPI creates a new NatsAPI instance with channel-based worker pools.\n// Concurrency is configured via NATSConfig (defaults: JobConcurrency=8, NodeConcurrency=2).\nfunc NewNatsAPI() *NatsAPI {\n\tjobConc := 8\n\tnodeConc := 2\n\n\tif s := config.Keys.APISubjects; s != nil {\n\t\tif s.JobConcurrency > 0 {\n\t\t\tjobConc = s.JobConcurrency\n\t\t}\n\t\tif s.NodeConcurrency > 0 {\n\t\t\tnodeConc = s.NodeConcurrency\n\t\t}\n\t}\n\n\tapi := &NatsAPI{\n\t\tJobRepository: repository.GetJobRepository(),\n\t\tjobCh:         make(chan natsMessage, jobConc),\n\t\tnodeCh:        make(chan natsMessage, nodeConc),\n\t}\n\n\t// Start worker goroutines\n\tfor range jobConc {\n\t\tgo api.jobWorker()\n\t}\n\tfor range nodeConc {\n\t\tgo api.nodeWorker()\n\t}\n\n\treturn api\n}\n\n// jobWorker processes job event messages from the job channel.\nfunc (api *NatsAPI) jobWorker() {\n\tfor msg := range api.jobCh {\n\t\tapi.handleJobEvent(msg.subject, msg.data)\n\t}\n}\n\n// nodeWorker processes node state messages from the node channel.\nfunc (api *NatsAPI) nodeWorker() {\n\tfor msg := range api.nodeCh {\n\t\tapi.handleNodeState(msg.subject, msg.data)\n\t}\n}\n\n// StartSubscriptions registers all NATS subscriptions for Job and Node APIs.\n// Messages are delivered to buffered channels and processed by worker goroutines.\n// Returns an error if the NATS client is not available or subscription fails.\nfunc (api *NatsAPI) StartSubscriptions() error {\n\tclient := nats.GetClient()\n\tif client == nil {\n\t\tcclog.Warn(\"NATS client not available, skipping API subscriptions\")\n\t\treturn nil\n\t}\n\n\tif config.Keys.APISubjects != nil {\n\t\ts := config.Keys.APISubjects\n\n\t\tif err := client.Subscribe(s.SubjectJobEvent, func(subject string, data []byte) {\n\t\t\tapi.jobCh <- natsMessage{subject: subject, data: data}\n\t\t}); err != nil {\n\t\t\treturn err\n\t\t}\n\n\t\tif err := client.Subscribe(s.SubjectNodeState, func(subject string, data []byte) {\n\t\t\tapi.nodeCh <- natsMessage{subject: subject, data: data}\n\t\t}); err != nil {\n\t\t\treturn err\n\t\t}\n\n\t\tcclog.Info(\"NATS API subscriptions started\")\n\t}\n\treturn nil\n}\n\n// processJobEvent routes job event messages to the appropriate handler based on the \"function\" tag.\n// Validates that required tags and fields are present before processing.\nfunc (api *NatsAPI) processJobEvent(msg lp.CCMessage) {\n\tfunction, ok := msg.GetTag(\"function\")\n\tif !ok {\n\t\tcclog.Errorf(\"Job event is missing required tag 'function': measurement=%s\", msg.Name())\n\t\treturn\n\t}\n\n\tswitch function {\n\tcase \"start_job\":\n\t\tv, ok := msg.GetEventValue()\n\t\tif !ok {\n\t\t\tcclog.Errorf(\"Job start event is missing event field with JSON payload\")\n\t\t\treturn\n\t\t}\n\t\tapi.handleStartJob(v)\n\n\tcase \"stop_job\":\n\t\tv, ok := msg.GetEventValue()\n\t\tif !ok {\n\t\t\tcclog.Errorf(\"Job stop event is missing event field with JSON payload\")\n\t\t\treturn\n\t\t}\n\t\tapi.handleStopJob(v)\n\n\tdefault:\n\t\tcclog.Warnf(\"Unknown job event function '%s', expected 'start_job' or 'stop_job'\", function)\n\t}\n}\n\n// handleJobEvent processes job-related messages received via NATS using InfluxDB line protocol.\n// The message must be in line protocol format with measurement=\"job\" and include:\n//   - tag \"function\" with value \"start_job\" or \"stop_job\"\n//   - field \"event\" containing JSON payload (schema.Job or StopJobAPIRequest)\n//\n// Example: job,function=start_job event=\"{\\\"jobId\\\":1001,...}\" 1234567890000000000\nfunc (api *NatsAPI) handleJobEvent(subject string, data []byte) {\n\tif len(data) == 0 {\n\t\tcclog.Warnf(\"NATS %s: received empty message\", subject)\n\t\treturn\n\t}\n\n\td := influx.NewDecoderWithBytes(data)\n\n\tfor d.Next() {\n\t\tm, err := receivers.DecodeInfluxMessage(d)\n\t\tif err != nil {\n\t\t\tcclog.Errorf(\"NATS %s: failed to decode InfluxDB line protocol message: %v\", subject, err)\n\t\t\treturn\n\t\t}\n\n\t\tif !m.IsEvent() {\n\t\t\tcclog.Debugf(\"NATS %s: received non-event message, skipping\", subject)\n\t\t\tcontinue\n\t\t}\n\n\t\tif m.Name() == \"job\" {\n\t\t\tapi.processJobEvent(m)\n\t\t} else {\n\t\t\tcclog.Debugf(\"NATS %s: unexpected measurement name '%s', expected 'job'\", subject, m.Name())\n\t\t}\n\t}\n}\n\n// handleStartJob processes job start messages received via NATS.\n// The payload parameter contains JSON following the schema.Job structure.\n// Jobs are validated, checked for duplicates, and inserted into the database.\nfunc (api *NatsAPI) handleStartJob(payload string) {\n\tif payload == \"\" {\n\t\tcclog.Error(\"NATS start job: payload is empty\")\n\t\treturn\n\t}\n\treq := schema.Job{\n\t\tShared:           \"none\",\n\t\tMonitoringStatus: schema.MonitoringStatusRunningOrArchiving,\n\t}\n\n\tdec := json.NewDecoder(strings.NewReader(payload))\n\tdec.DisallowUnknownFields()\n\tif err := dec.Decode(&req); err != nil {\n\t\tcclog.Errorf(\"NATS start job: parsing request failed: %v\", err)\n\t\treturn\n\t}\n\n\tcclog.Debugf(\"NATS start job: %s\", req.GoString())\n\treq.State = schema.JobStateRunning\n\n\tif err := importer.SanityChecks(&req); err != nil {\n\t\tcclog.Errorf(\"NATS start job: sanity check failed: %v\", err)\n\t\treturn\n\t}\n\n\tvar unlockOnce sync.Once\n\tapi.RepositoryMutex.Lock()\n\tdefer unlockOnce.Do(api.RepositoryMutex.Unlock)\n\n\tjobs, err := api.JobRepository.FindAll(&req.JobID, &req.Cluster, nil)\n\tif err != nil && err != sql.ErrNoRows {\n\t\tcclog.Errorf(\"NATS start job: checking for duplicate failed: %v\", err)\n\t\treturn\n\t}\n\tif err == nil {\n\t\tfor _, job := range jobs {\n\t\t\tif (req.StartTime - job.StartTime) < secondsPerDay {\n\t\t\t\tcclog.Errorf(\"NATS start job: job with jobId %d, cluster %s already exists (dbid: %d)\",\n\t\t\t\t\treq.JobID, req.Cluster, job.ID)\n\t\t\t\treturn\n\t\t\t}\n\t\t}\n\t}\n\n\t// When tags are present, insert directly into the job table so that the\n\t// returned ID can be used with AddTagOrCreate (which queries the job table).\n\tvar id int64\n\tif len(req.Tags) > 0 {\n\t\tid, err = api.JobRepository.StartDirect(&req)\n\t} else {\n\t\tid, err = api.JobRepository.Start(&req)\n\t}\n\tif err != nil {\n\t\tcclog.Errorf(\"NATS start job: insert into database failed: %v\", err)\n\t\treturn\n\t}\n\tunlockOnce.Do(api.RepositoryMutex.Unlock)\n\n\tfor _, tag := range req.Tags {\n\t\tif _, err := api.JobRepository.AddTagOrCreate(nil, id, tag.Type, tag.Name, tag.Scope); err != nil {\n\t\t\tcclog.Errorf(\"NATS start job: adding tag to new job %d failed: %v\", id, err)\n\t\t\treturn\n\t\t}\n\t}\n\n\tcclog.Infof(\"NATS: new job (id: %d): cluster=%s, jobId=%d, user=%s, startTime=%d\",\n\t\tid, req.Cluster, req.JobID, req.User, req.StartTime)\n}\n\n// handleStopJob processes job stop messages received via NATS.\n// The payload parameter contains JSON following the StopJobAPIRequest structure.\n// The job is marked as stopped in the database and archiving is triggered if monitoring is enabled.\nfunc (api *NatsAPI) handleStopJob(payload string) {\n\tif payload == \"\" {\n\t\tcclog.Error(\"NATS stop job: payload is empty\")\n\t\treturn\n\t}\n\tvar req StopJobAPIRequest\n\n\tdec := json.NewDecoder(strings.NewReader(payload))\n\tdec.DisallowUnknownFields()\n\tif err := dec.Decode(&req); err != nil {\n\t\tcclog.Errorf(\"NATS job stop: parsing request failed: %v\", err)\n\t\treturn\n\t}\n\n\tif req.JobID == nil {\n\t\tcclog.Errorf(\"NATS job stop: the field 'jobId' is required\")\n\t\treturn\n\t}\n\n\tisCached := false\n\tjob, err := api.JobRepository.FindCached(req.JobID, req.Cluster, req.StartTime)\n\tif err != nil {\n\t\t// Not in cache, try main job table\n\t\tjob, err = api.JobRepository.Find(req.JobID, req.Cluster, req.StartTime)\n\t\tif err != nil {\n\t\t\tcclog.Errorf(\"NATS job stop: finding job failed: %v\", err)\n\t\t\treturn\n\t\t}\n\t} else {\n\t\tisCached = true\n\t}\n\n\tif job.State != schema.JobStateRunning {\n\t\tcclog.Errorf(\"NATS job stop: jobId %d (id %d) on %s: job has already been stopped (state is: %s)\",\n\t\t\tjob.JobID, job.ID, job.Cluster, job.State)\n\t\treturn\n\t}\n\n\tif job.StartTime > req.StopTime {\n\t\tcclog.Errorf(\"NATS job stop: jobId %d (id %d) on %s: stopTime %d must be >= startTime %d\",\n\t\t\tjob.JobID, job.ID, job.Cluster, req.StopTime, job.StartTime)\n\t\treturn\n\t}\n\n\tif req.State != \"\" && !req.State.Valid() {\n\t\tcclog.Errorf(\"NATS job stop: jobId %d (id %d) on %s: invalid job state: %#v\",\n\t\t\tjob.JobID, job.ID, job.Cluster, req.State)\n\t\treturn\n\t} else if req.State == \"\" {\n\t\treq.State = schema.JobStateCompleted\n\t}\n\n\tjob.Duration = int32(req.StopTime - job.StartTime)\n\tjob.State = req.State\n\tapi.JobRepository.Mutex.Lock()\n\tdefer api.JobRepository.Mutex.Unlock()\n\n\t// If the job is still in job_cache, transfer it to the job table first\n\tif isCached {\n\t\tnewID, err := api.JobRepository.TransferCachedJobToMain(*job.ID)\n\t\tif err != nil {\n\t\t\tcclog.Errorf(\"NATS job stop: jobId %d (id %d) on %s: transferring cached job failed: %v\",\n\t\t\t\tjob.JobID, *job.ID, job.Cluster, err)\n\t\t\treturn\n\t\t}\n\t\tcclog.Infof(\"NATS: transferred cached job to main table: old id %d -> new id %d (jobId=%d)\", *job.ID, newID, job.JobID)\n\t\tjob.ID = &newID\n\t}\n\n\tif err := api.JobRepository.Stop(*job.ID, job.Duration, job.State, job.MonitoringStatus); err != nil {\n\t\tcclog.Errorf(\"NATS job stop: jobId %d (id %d) on %s: marking job as '%s' failed: %v\",\n\t\t\tjob.JobID, *job.ID, job.Cluster, job.State, err)\n\t\treturn\n\t}\n\n\tcclog.Infof(\"NATS: archiving job (dbid: %d): cluster=%s, jobId=%d, user=%s, startTime=%d, duration=%d, state=%s\",\n\t\t*job.ID, job.Cluster, job.JobID, job.User, job.StartTime, job.Duration, job.State)\n\n\tif job.MonitoringStatus == schema.MonitoringStatusDisabled {\n\t\treturn\n\t}\n\n\tarchiver.TriggerArchiving(job)\n}\n\n// processNodestateEvent extracts and processes node state data from the InfluxDB message.\n// Updates node states in the repository for all nodes in the payload.\nfunc (api *NatsAPI) processNodestateEvent(msg lp.CCMessage) {\n\tv, ok := msg.GetEventValue()\n\tif !ok {\n\t\tcclog.Errorf(\"Nodestate event is missing event field with JSON payload\")\n\t\treturn\n\t}\n\n\tvar req UpdateNodeStatesRequest\n\n\tdec := json.NewDecoder(strings.NewReader(v))\n\tdec.DisallowUnknownFields()\n\tif err := dec.Decode(&req); err != nil {\n\t\tcclog.Errorf(\"NATS nodestate: parsing request failed: %v\", err)\n\t\treturn\n\t}\n\n\trepo := repository.GetNodeRepository()\n\trequestReceived := time.Now().Unix()\n\n\tupdates := make([]repository.NodeStateUpdate, 0, len(req.Nodes))\n\tfor _, node := range req.Nodes {\n\t\tstate := determineState(node.States)\n\t\tnodeState := schema.NodeStateDB{\n\t\t\tTimeStamp:       requestReceived,\n\t\t\tNodeState:       state,\n\t\t\tCpusAllocated:   node.CpusAllocated,\n\t\t\tMemoryAllocated: node.MemoryAllocated,\n\t\t\tGpusAllocated:   node.GpusAllocated,\n\t\t\tHealthState:     schema.MonitoringStateFull,\n\t\t\tJobsRunning:     node.JobsRunning,\n\t\t}\n\t\tupdates = append(updates, repository.NodeStateUpdate{\n\t\t\tHostname:  node.Hostname,\n\t\t\tCluster:   req.Cluster,\n\t\t\tNodeState: &nodeState,\n\t\t})\n\t}\n\n\tif err := repo.BatchUpdateNodeStates(updates); err != nil {\n\t\tcclog.Errorf(\"NATS nodestate: batch update for cluster %s failed: %v\", req.Cluster, err)\n\t}\n\n\tcclog.Debugf(\"NATS nodestate: updated %d node states for cluster %s\", len(req.Nodes), req.Cluster)\n}\n\n// handleNodeState processes node state update messages received via NATS using InfluxDB line protocol.\n// The message must be in line protocol format with measurement=\"nodestate\" and include:\n//   - field \"event\" containing JSON payload (UpdateNodeStatesRequest)\n//\n// Example: nodestate event=\"{\\\"cluster\\\":\\\"testcluster\\\",\\\"nodes\\\":[...]}\" 1234567890000000000\nfunc (api *NatsAPI) handleNodeState(subject string, data []byte) {\n\tif len(data) == 0 {\n\t\tcclog.Warnf(\"NATS %s: received empty message\", subject)\n\t\treturn\n\t}\n\n\td := influx.NewDecoderWithBytes(data)\n\n\tfor d.Next() {\n\t\tm, err := receivers.DecodeInfluxMessage(d)\n\t\tif err != nil {\n\t\t\tcclog.Errorf(\"NATS %s: failed to decode InfluxDB line protocol message: %v\", subject, err)\n\t\t\treturn\n\t\t}\n\n\t\tif !m.IsEvent() {\n\t\t\tcclog.Warnf(\"NATS %s: received non-event message, skipping\", subject)\n\t\t\tcontinue\n\t\t}\n\n\t\tif m.Name() == \"nodestate\" {\n\t\t\tapi.processNodestateEvent(m)\n\t\t} else {\n\t\t\tcclog.Warnf(\"NATS %s: unexpected measurement name '%s', expected 'nodestate'\", subject, m.Name())\n\t\t}\n\t}\n}\n","structuredPatch":[{"oldStart":8,"oldLines":6,"newStart":8,"newLines":7,"lines":[" import (","   \"database/sql\"","   \"encoding/json\"","+  \"maps\"","   \"strings\"","   \"sync\"","   \"time\""]},{"oldStart":15,"oldLines":7,"newStart":16,"newLines":10,"lines":["   \"github.com/ClusterCockpit/cc-backend/internal/archiver\"","   \"github.com/ClusterCockpit/cc-backend/internal/config\"","   \"github.com/ClusterCockpit/cc-backend/internal/importer\"","+  \"github.com/ClusterCockpit/cc-backend/internal/metricdispatch\"","   \"github.com/ClusterCockpit/cc-backend/internal/repository\"","+  \"github.com/ClusterCockpit/cc-backend/pkg/archive\"","+  \"github.com/ClusterCockpit/cc-backend/pkg/metricstore\"","   cclog \"github.com/ClusterCockpit/cc-lib/v2/ccLogger\"","   lp \"github.com/ClusterCockpit/cc-lib/v2/ccMessage\"","   \"github.com/ClusterCockpit/cc-lib/v2/nats\""]}],"userModified":false,"replaceAll":false},"sourceToolAssistantUUID":"2a28a8a4-17eb-43be-949b-50bc53eb997b","userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"23bd02ee-e611-4488-a3d4-71ca93985943","version":"2.1.76","gitBranch":"hotfix","slug":"magical-sauteeing-gosling"}
+{"parentUuid":"26984c46-f6e3-4cf1-9591-11c9bdeddda5","isSidechain":false,"message":{"model":"claude-opus-4-6","id":"msg_01TXGBLG8fYy8CFp24xMdVgb","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01WJ1FHQ7D85cfzjb8MN9bdA","name":"Edit","input":{"replace_all":false,"file_path":"/Users/jan/prg/ClusterCockpit/cc-backend/internal/api/nats.go","old_string":"\trepo := repository.GetNodeRepository()\n\trequestReceived := time.Now().Unix()\n\n\tupdates := make([]repository.NodeStateUpdate, 0, len(req.Nodes))\n\tfor _, node := range req.Nodes {\n\t\tstate := determineState(node.States)\n\t\tnodeState := schema.NodeStateDB{\n\t\t\tTimeStamp:       requestReceived,\n\t\t\tNodeState:       state,\n\t\t\tCpusAllocated:   node.CpusAllocated,\n\t\t\tMemoryAllocated: node.MemoryAllocated,\n\t\t\tGpusAllocated:   node.GpusAllocated,\n\t\t\tHealthState:     schema.MonitoringStateFull,\n\t\t\tJobsRunning:     node.JobsRunning,\n\t\t}\n\t\tupdates = append(updates, repository.NodeStateUpdate{\n\t\t\tHostname:  node.Hostname,\n\t\t\tCluster:   req.Cluster,\n\t\t\tNodeState: &nodeState,\n\t\t})\n\t}\n\n\tif err := repo.BatchUpdateNodeStates(updates); err != nil {\n\t\tcclog.Errorf(\"NATS nodestate: batch update for cluster %s failed: %v\", req.Cluster, err)\n\t}\n\n\tcclog.Debugf(\"NATS nodestate: updated %d node states for cluster %s\", len(req.Nodes), req.Cluster)","new_string":"\trepo := repository.GetNodeRepository()\n\trequestReceived := time.Now().Unix()\n\n\t// Build nodeList per subcluster for health check\n\tm := make(map[string][]string)\n\tmetricNames := make(map[string][]string)\n\thealthResults := make(map[string]metricstore.HealthCheckResult)\n\n\tfor _, node := range req.Nodes {\n\t\tif sc, err := archive.GetSubClusterByNode(req.Cluster, node.Hostname); err == nil {\n\t\t\tm[sc] = append(m[sc], node.Hostname)\n\t\t}\n\t}\n\n\tfor sc := range m {\n\t\tif sc != \"\" {\n\t\t\tmetricList := archive.GetMetricConfigSubCluster(req.Cluster, sc)\n\t\t\tmetricNames[sc] = metricListToNames(metricList)\n\t\t}\n\t}\n\n\t// Perform health check against metric store\n\thealthRepo, err := metricdispatch.GetHealthCheckRepo(req.Cluster)\n\tif err != nil {\n\t\tcclog.Warnf(\"NATS nodestate: no metric store for cluster %s, skipping health check: %v\", req.Cluster, err)\n\t} else {\n\t\tfor sc, nl := range m {\n\t\t\tif sc != \"\" {\n\t\t\t\tif results, err := healthRepo.HealthCheck(req.Cluster, nl, metricNames[sc]); err == nil {\n\t\t\t\t\tmaps.Copy(healthResults, results)\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\tupdates := make([]repository.NodeStateUpdate, 0, len(req.Nodes))\n\tfor _, node := range req.Nodes {\n\t\tstate := determineState(node.States)\n\t\thealthState := schema.MonitoringStateFailed\n\t\tvar healthMetrics string\n\t\tif result, ok := healthResults[node.Hostname]; ok {\n\t\t\thealthState = result.State\n\t\t\thealthMetrics = result.HealthMetrics\n\t\t}\n\t\tnodeState := schema.NodeStateDB{\n\t\t\tTimeStamp:       requestReceived,\n\t\t\tNodeState:       state,\n\t\t\tCpusAllocated:   node.CpusAllocated,\n\t\t\tMemoryAllocated: node.MemoryAllocated,\n\t\t\tGpusAllocated:   node.GpusAllocated,\n\t\t\tHealthState:     healthState,\n\t\t\tHealthMetrics:   healthMetrics,\n\t\t\tJobsRunning:     node.JobsRunning,\n\t\t}\n\t\tupdates = append(updates, repository.NodeStateUpdate{\n\t\t\tHostname:  node.Hostname,\n\t\t\tCluster:   req.Cluster,\n\t\t\tNodeState: &nodeState,\n\t\t})\n\t}\n\n\tif err := repo.BatchUpdateNodeStates(updates); err != nil {\n\t\tcclog.Errorf(\"NATS nodestate: batch update for cluster %s failed: %v\", req.Cluster, err)\n\t}\n\n\tcclog.Debugf(\"NATS nodestate: updated %d node states for cluster %s\", len(req.Nodes), req.Cluster)"},"caller":{"type":"direct"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":636,"cache_read_input_tokens":28128,"output_tokens":1186,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":636,"ephemeral_5m_input_tokens":0},"inference_geo":"","iterations":[],"speed":"standard"}},"requestId":"req_011CZ6ePV7vV5nNMj53eM7bz","type":"assistant","uuid":"52e6e038-207f-4ba4-bd98-7b54ad27dad1","timestamp":"2026-03-16T11:02:06.964Z","userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"23bd02ee-e611-4488-a3d4-71ca93985943","version":"2.1.76","gitBranch":"hotfix","slug":"magical-sauteeing-gosling"}
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+{"parentUuid":"52e6e038-207f-4ba4-bd98-7b54ad27dad1","isSidechain":false,"promptId":"c2bc230a-67ed-4f5e-b42f-f832728effa2","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01WJ1FHQ7D85cfzjb8MN9bdA","type":"tool_result","content":"The file /Users/jan/prg/ClusterCockpit/cc-backend/internal/api/nats.go has been updated successfully."}]},"uuid":"148cb96d-32b6-4842-93a0-445ebea5e228","timestamp":"2026-03-16T11:02:06.973Z","toolUseResult":{"filePath":"/Users/jan/prg/ClusterCockpit/cc-backend/internal/api/nats.go","oldString":"\trepo := repository.GetNodeRepository()\n\trequestReceived := time.Now().Unix()\n\n\tupdates := make([]repository.NodeStateUpdate, 0, len(req.Nodes))\n\tfor _, node := range req.Nodes {\n\t\tstate := determineState(node.States)\n\t\tnodeState := schema.NodeStateDB{\n\t\t\tTimeStamp:       requestReceived,\n\t\t\tNodeState:       state,\n\t\t\tCpusAllocated:   node.CpusAllocated,\n\t\t\tMemoryAllocated: node.MemoryAllocated,\n\t\t\tGpusAllocated:   node.GpusAllocated,\n\t\t\tHealthState:     schema.MonitoringStateFull,\n\t\t\tJobsRunning:     node.JobsRunning,\n\t\t}\n\t\tupdates = append(updates, repository.NodeStateUpdate{\n\t\t\tHostname:  node.Hostname,\n\t\t\tCluster:   req.Cluster,\n\t\t\tNodeState: &nodeState,\n\t\t})\n\t}\n\n\tif err := repo.BatchUpdateNodeStates(updates); err != nil {\n\t\tcclog.Errorf(\"NATS nodestate: batch update for cluster %s failed: %v\", req.Cluster, err)\n\t}\n\n\tcclog.Debugf(\"NATS nodestate: updated %d node states for cluster %s\", len(req.Nodes), req.Cluster)","newString":"\trepo := repository.GetNodeRepository()\n\trequestReceived := time.Now().Unix()\n\n\t// Build nodeList per subcluster for health check\n\tm := make(map[string][]string)\n\tmetricNames := make(map[string][]string)\n\thealthResults := make(map[string]metricstore.HealthCheckResult)\n\n\tfor _, node := range req.Nodes {\n\t\tif sc, err := archive.GetSubClusterByNode(req.Cluster, node.Hostname); err == nil {\n\t\t\tm[sc] = append(m[sc], node.Hostname)\n\t\t}\n\t}\n\n\tfor sc := range m {\n\t\tif sc != \"\" {\n\t\t\tmetricList := archive.GetMetricConfigSubCluster(req.Cluster, sc)\n\t\t\tmetricNames[sc] = metricListToNames(metricList)\n\t\t}\n\t}\n\n\t// Perform health check against metric store\n\thealthRepo, err := metricdispatch.GetHealthCheckRepo(req.Cluster)\n\tif err != nil {\n\t\tcclog.Warnf(\"NATS nodestate: no metric store for cluster %s, skipping health check: %v\", req.Cluster, err)\n\t} else {\n\t\tfor sc, nl := range m {\n\t\t\tif sc != \"\" {\n\t\t\t\tif results, err := healthRepo.HealthCheck(req.Cluster, nl, metricNames[sc]); err == nil {\n\t\t\t\t\tmaps.Copy(healthResults, results)\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\tupdates := make([]repository.NodeStateUpdate, 0, len(req.Nodes))\n\tfor _, node := range req.Nodes {\n\t\tstate := determineState(node.States)\n\t\thealthState := schema.MonitoringStateFailed\n\t\tvar healthMetrics string\n\t\tif result, ok := healthResults[node.Hostname]; ok {\n\t\t\thealthState = result.State\n\t\t\thealthMetrics = result.HealthMetrics\n\t\t}\n\t\tnodeState := schema.NodeStateDB{\n\t\t\tTimeStamp:       requestReceived,\n\t\t\tNodeState:       state,\n\t\t\tCpusAllocated:   node.CpusAllocated,\n\t\t\tMemoryAllocated: node.MemoryAllocated,\n\t\t\tGpusAllocated:   node.GpusAllocated,\n\t\t\tHealthState:     healthState,\n\t\t\tHealthMetrics:   healthMetrics,\n\t\t\tJobsRunning:     node.JobsRunning,\n\t\t}\n\t\tupdates = append(updates, repository.NodeStateUpdate{\n\t\t\tHostname:  node.Hostname,\n\t\t\tCluster:   req.Cluster,\n\t\t\tNodeState: &nodeState,\n\t\t})\n\t}\n\n\tif err := repo.BatchUpdateNodeStates(updates); err != nil {\n\t\tcclog.Errorf(\"NATS nodestate: batch update for cluster %s failed: %v\", req.Cluster, err)\n\t}\n\n\tcclog.Debugf(\"NATS nodestate: updated %d node states for cluster %s\", len(req.Nodes), req.Cluster)","originalFile":"// Copyright (C) NHR@FAU, University Erlangen-Nuremberg.\n// All rights reserved. This file is part of cc-backend.\n// Use of this source code is governed by a MIT-style\n// license that can be found in the LICENSE file.\n\npackage api\n\nimport (\n\t\"database/sql\"\n\t\"encoding/json\"\n\t\"maps\"\n\t\"strings\"\n\t\"sync\"\n\t\"time\"\n\n\t\"github.com/ClusterCockpit/cc-backend/internal/archiver\"\n\t\"github.com/ClusterCockpit/cc-backend/internal/config\"\n\t\"github.com/ClusterCockpit/cc-backend/internal/importer\"\n\t\"github.com/ClusterCockpit/cc-backend/internal/metricdispatch\"\n\t\"github.com/ClusterCockpit/cc-backend/internal/repository\"\n\t\"github.com/ClusterCockpit/cc-backend/pkg/archive\"\n\t\"github.com/ClusterCockpit/cc-backend/pkg/metricstore\"\n\tcclog \"github.com/ClusterCockpit/cc-lib/v2/ccLogger\"\n\tlp \"github.com/ClusterCockpit/cc-lib/v2/ccMessage\"\n\t\"github.com/ClusterCockpit/cc-lib/v2/nats\"\n\t\"github.com/ClusterCockpit/cc-lib/v2/receivers\"\n\t\"github.com/ClusterCockpit/cc-lib/v2/schema\"\n\tinflux \"github.com/ClusterCockpit/cc-line-protocol/v2/lineprotocol\"\n)\n\n// natsMessage wraps a raw NATS message with its subject for channel-based processing.\ntype natsMessage struct {\n\tsubject string\n\tdata    []byte\n}\n\n// NatsAPI provides NATS subscription-based handlers for Job and Node operations.\n// It mirrors the functionality of the REST API but uses NATS messaging with\n// InfluxDB line protocol as the message format.\n//\n// # Message Format\n//\n// All NATS messages use InfluxDB line protocol format (https://docs.influxdata.com/influxdb/v2.0/reference/syntax/line-protocol/)\n// with the following structure:\n//\n//\tmeasurement,tag1=value1,tag2=value2 field1=value1,field2=value2 timestamp\n//\n// # Job Events\n//\n// Job start/stop events use the \"job\" measurement with a \"function\" tag to distinguish operations:\n//\n//\tjob,function=start_job event=\"{...JSON payload...}\" <timestamp>\n//\tjob,function=stop_job event=\"{...JSON payload...}\" <timestamp>\n//\n// The JSON payload in the \"event\" field follows the schema.Job or StopJobAPIRequest structure.\n//\n// Example job start message:\n//\n//\tjob,function=start_job event=\"{\\\"jobId\\\":1001,\\\"user\\\":\\\"testuser\\\",\\\"cluster\\\":\\\"testcluster\\\",...}\" 1234567890000000000\n//\n// # Node State Events\n//\n// Node state updates use the \"nodestate\" measurement with cluster information:\n//\n//\tnodestate event=\"{...JSON payload...}\" <timestamp>\n//\n// The JSON payload follows the UpdateNodeStatesRequest structure.\n//\n// Example node state message:\n//\n//\tnodestate event=\"{\\\"cluster\\\":\\\"testcluster\\\",\\\"nodes\\\":[{\\\"hostname\\\":\\\"node01\\\",\\\"states\\\":[\\\"idle\\\"]}]}\" 1234567890000000000\ntype NatsAPI struct {\n\tJobRepository *repository.JobRepository\n\t// RepositoryMutex protects job creation operations from race conditions\n\t// when checking for duplicate jobs during startJob calls.\n\tRepositoryMutex sync.Mutex\n\t// jobCh receives job event messages for processing by worker goroutines.\n\tjobCh chan natsMessage\n\t// nodeCh receives node state messages for processing by worker goroutines.\n\tnodeCh chan natsMessage\n}\n\n// NewNatsAPI creates a new NatsAPI instance with channel-based worker pools.\n// Concurrency is configured via NATSConfig (defaults: JobConcurrency=8, NodeConcurrency=2).\nfunc NewNatsAPI() *NatsAPI {\n\tjobConc := 8\n\tnodeConc := 2\n\n\tif s := config.Keys.APISubjects; s != nil {\n\t\tif s.JobConcurrency > 0 {\n\t\t\tjobConc = s.JobConcurrency\n\t\t}\n\t\tif s.NodeConcurrency > 0 {\n\t\t\tnodeConc = s.NodeConcurrency\n\t\t}\n\t}\n\n\tapi := &NatsAPI{\n\t\tJobRepository: repository.GetJobRepository(),\n\t\tjobCh:         make(chan natsMessage, jobConc),\n\t\tnodeCh:        make(chan natsMessage, nodeConc),\n\t}\n\n\t// Start worker goroutines\n\tfor range jobConc {\n\t\tgo api.jobWorker()\n\t}\n\tfor range nodeConc {\n\t\tgo api.nodeWorker()\n\t}\n\n\treturn api\n}\n\n// jobWorker processes job event messages from the job channel.\nfunc (api *NatsAPI) jobWorker() {\n\tfor msg := range api.jobCh {\n\t\tapi.handleJobEvent(msg.subject, msg.data)\n\t}\n}\n\n// nodeWorker processes node state messages from the node channel.\nfunc (api *NatsAPI) nodeWorker() {\n\tfor msg := range api.nodeCh {\n\t\tapi.handleNodeState(msg.subject, msg.data)\n\t}\n}\n\n// StartSubscriptions registers all NATS subscriptions for Job and Node APIs.\n// Messages are delivered to buffered channels and processed by worker goroutines.\n// Returns an error if the NATS client is not available or subscription fails.\nfunc (api *NatsAPI) StartSubscriptions() error {\n\tclient := nats.GetClient()\n\tif client == nil {\n\t\tcclog.Warn(\"NATS client not available, skipping API subscriptions\")\n\t\treturn nil\n\t}\n\n\tif config.Keys.APISubjects != nil {\n\t\ts := config.Keys.APISubjects\n\n\t\tif err := client.Subscribe(s.SubjectJobEvent, func(subject string, data []byte) {\n\t\t\tapi.jobCh <- natsMessage{subject: subject, data: data}\n\t\t}); err != nil {\n\t\t\treturn err\n\t\t}\n\n\t\tif err := client.Subscribe(s.SubjectNodeState, func(subject string, data []byte) {\n\t\t\tapi.nodeCh <- natsMessage{subject: subject, data: data}\n\t\t}); err != nil {\n\t\t\treturn err\n\t\t}\n\n\t\tcclog.Info(\"NATS API subscriptions started\")\n\t}\n\treturn nil\n}\n\n// processJobEvent routes job event messages to the appropriate handler based on the \"function\" tag.\n// Validates that required tags and fields are present before processing.\nfunc (api *NatsAPI) processJobEvent(msg lp.CCMessage) {\n\tfunction, ok := msg.GetTag(\"function\")\n\tif !ok {\n\t\tcclog.Errorf(\"Job event is missing required tag 'function': measurement=%s\", msg.Name())\n\t\treturn\n\t}\n\n\tswitch function {\n\tcase \"start_job\":\n\t\tv, ok := msg.GetEventValue()\n\t\tif !ok {\n\t\t\tcclog.Errorf(\"Job start event is missing event field with JSON payload\")\n\t\t\treturn\n\t\t}\n\t\tapi.handleStartJob(v)\n\n\tcase \"stop_job\":\n\t\tv, ok := msg.GetEventValue()\n\t\tif !ok {\n\t\t\tcclog.Errorf(\"Job stop event is missing event field with JSON payload\")\n\t\t\treturn\n\t\t}\n\t\tapi.handleStopJob(v)\n\n\tdefault:\n\t\tcclog.Warnf(\"Unknown job event function '%s', expected 'start_job' or 'stop_job'\", function)\n\t}\n}\n\n// handleJobEvent processes job-related messages received via NATS using InfluxDB line protocol.\n// The message must be in line protocol format with measurement=\"job\" and include:\n//   - tag \"function\" with value \"start_job\" or \"stop_job\"\n//   - field \"event\" containing JSON payload (schema.Job or StopJobAPIRequest)\n//\n// Example: job,function=start_job event=\"{\\\"jobId\\\":1001,...}\" 1234567890000000000\nfunc (api *NatsAPI) handleJobEvent(subject string, data []byte) {\n\tif len(data) == 0 {\n\t\tcclog.Warnf(\"NATS %s: received empty message\", subject)\n\t\treturn\n\t}\n\n\td := influx.NewDecoderWithBytes(data)\n\n\tfor d.Next() {\n\t\tm, err := receivers.DecodeInfluxMessage(d)\n\t\tif err != nil {\n\t\t\tcclog.Errorf(\"NATS %s: failed to decode InfluxDB line protocol message: %v\", subject, err)\n\t\t\treturn\n\t\t}\n\n\t\tif !m.IsEvent() {\n\t\t\tcclog.Debugf(\"NATS %s: received non-event message, skipping\", subject)\n\t\t\tcontinue\n\t\t}\n\n\t\tif m.Name() == \"job\" {\n\t\t\tapi.processJobEvent(m)\n\t\t} else {\n\t\t\tcclog.Debugf(\"NATS %s: unexpected measurement name '%s', expected 'job'\", subject, m.Name())\n\t\t}\n\t}\n}\n\n// handleStartJob processes job start messages received via NATS.\n// The payload parameter contains JSON following the schema.Job structure.\n// Jobs are validated, checked for duplicates, and inserted into the database.\nfunc (api *NatsAPI) handleStartJob(payload string) {\n\tif payload == \"\" {\n\t\tcclog.Error(\"NATS start job: payload is empty\")\n\t\treturn\n\t}\n\treq := schema.Job{\n\t\tShared:           \"none\",\n\t\tMonitoringStatus: schema.MonitoringStatusRunningOrArchiving,\n\t}\n\n\tdec := json.NewDecoder(strings.NewReader(payload))\n\tdec.DisallowUnknownFields()\n\tif err := dec.Decode(&req); err != nil {\n\t\tcclog.Errorf(\"NATS start job: parsing request failed: %v\", err)\n\t\treturn\n\t}\n\n\tcclog.Debugf(\"NATS start job: %s\", req.GoString())\n\treq.State = schema.JobStateRunning\n\n\tif err := importer.SanityChecks(&req); err != nil {\n\t\tcclog.Errorf(\"NATS start job: sanity check failed: %v\", err)\n\t\treturn\n\t}\n\n\tvar unlockOnce sync.Once\n\tapi.RepositoryMutex.Lock()\n\tdefer unlockOnce.Do(api.RepositoryMutex.Unlock)\n\n\tjobs, err := api.JobRepository.FindAll(&req.JobID, &req.Cluster, nil)\n\tif err != nil && err != sql.ErrNoRows {\n\t\tcclog.Errorf(\"NATS start job: checking for duplicate failed: %v\", err)\n\t\treturn\n\t}\n\tif err == nil {\n\t\tfor _, job := range jobs {\n\t\t\tif (req.StartTime - job.StartTime) < secondsPerDay {\n\t\t\t\tcclog.Errorf(\"NATS start job: job with jobId %d, cluster %s already exists (dbid: %d)\",\n\t\t\t\t\treq.JobID, req.Cluster, job.ID)\n\t\t\t\treturn\n\t\t\t}\n\t\t}\n\t}\n\n\t// When tags are present, insert directly into the job table so that the\n\t// returned ID can be used with AddTagOrCreate (which queries the job table).\n\tvar id int64\n\tif len(req.Tags) > 0 {\n\t\tid, err = api.JobRepository.StartDirect(&req)\n\t} else {\n\t\tid, err = api.JobRepository.Start(&req)\n\t}\n\tif err != nil {\n\t\tcclog.Errorf(\"NATS start job: insert into database failed: %v\", err)\n\t\treturn\n\t}\n\tunlockOnce.Do(api.RepositoryMutex.Unlock)\n\n\tfor _, tag := range req.Tags {\n\t\tif _, err := api.JobRepository.AddTagOrCreate(nil, id, tag.Type, tag.Name, tag.Scope); err != nil {\n\t\t\tcclog.Errorf(\"NATS start job: adding tag to new job %d failed: %v\", id, err)\n\t\t\treturn\n\t\t}\n\t}\n\n\tcclog.Infof(\"NATS: new job (id: %d): cluster=%s, jobId=%d, user=%s, startTime=%d\",\n\t\tid, req.Cluster, req.JobID, req.User, req.StartTime)\n}\n\n// handleStopJob processes job stop messages received via NATS.\n// The payload parameter contains JSON following the StopJobAPIRequest structure.\n// The job is marked as stopped in the database and archiving is triggered if monitoring is enabled.\nfunc (api *NatsAPI) handleStopJob(payload string) {\n\tif payload == \"\" {\n\t\tcclog.Error(\"NATS stop job: payload is empty\")\n\t\treturn\n\t}\n\tvar req StopJobAPIRequest\n\n\tdec := json.NewDecoder(strings.NewReader(payload))\n\tdec.DisallowUnknownFields()\n\tif err := dec.Decode(&req); err != nil {\n\t\tcclog.Errorf(\"NATS job stop: parsing request failed: %v\", err)\n\t\treturn\n\t}\n\n\tif req.JobID == nil {\n\t\tcclog.Errorf(\"NATS job stop: the field 'jobId' is required\")\n\t\treturn\n\t}\n\n\tisCached := false\n\tjob, err := api.JobRepository.FindCached(req.JobID, req.Cluster, req.StartTime)\n\tif err != nil {\n\t\t// Not in cache, try main job table\n\t\tjob, err = api.JobRepository.Find(req.JobID, req.Cluster, req.StartTime)\n\t\tif err != nil {\n\t\t\tcclog.Errorf(\"NATS job stop: finding job failed: %v\", err)\n\t\t\treturn\n\t\t}\n\t} else {\n\t\tisCached = true\n\t}\n\n\tif job.State != schema.JobStateRunning {\n\t\tcclog.Errorf(\"NATS job stop: jobId %d (id %d) on %s: job has already been stopped (state is: %s)\",\n\t\t\tjob.JobID, job.ID, job.Cluster, job.State)\n\t\treturn\n\t}\n\n\tif job.StartTime > req.StopTime {\n\t\tcclog.Errorf(\"NATS job stop: jobId %d (id %d) on %s: stopTime %d must be >= startTime %d\",\n\t\t\tjob.JobID, job.ID, job.Cluster, req.StopTime, job.StartTime)\n\t\treturn\n\t}\n\n\tif req.State != \"\" && !req.State.Valid() {\n\t\tcclog.Errorf(\"NATS job stop: jobId %d (id %d) on %s: invalid job state: %#v\",\n\t\t\tjob.JobID, job.ID, job.Cluster, req.State)\n\t\treturn\n\t} else if req.State == \"\" {\n\t\treq.State = schema.JobStateCompleted\n\t}\n\n\tjob.Duration = int32(req.StopTime - job.StartTime)\n\tjob.State = req.State\n\tapi.JobRepository.Mutex.Lock()\n\tdefer api.JobRepository.Mutex.Unlock()\n\n\t// If the job is still in job_cache, transfer it to the job table first\n\tif isCached {\n\t\tnewID, err := api.JobRepository.TransferCachedJobToMain(*job.ID)\n\t\tif err != nil {\n\t\t\tcclog.Errorf(\"NATS job stop: jobId %d (id %d) on %s: transferring cached job failed: %v\",\n\t\t\t\tjob.JobID, *job.ID, job.Cluster, err)\n\t\t\treturn\n\t\t}\n\t\tcclog.Infof(\"NATS: transferred cached job to main table: old id %d -> new id %d (jobId=%d)\", *job.ID, newID, job.JobID)\n\t\tjob.ID = &newID\n\t}\n\n\tif err := api.JobRepository.Stop(*job.ID, job.Duration, job.State, job.MonitoringStatus); err != nil {\n\t\tcclog.Errorf(\"NATS job stop: jobId %d (id %d) on %s: marking job as '%s' failed: %v\",\n\t\t\tjob.JobID, *job.ID, job.Cluster, job.State, err)\n\t\treturn\n\t}\n\n\tcclog.Infof(\"NATS: archiving job (dbid: %d): cluster=%s, jobId=%d, user=%s, startTime=%d, duration=%d, state=%s\",\n\t\t*job.ID, job.Cluster, job.JobID, job.User, job.StartTime, job.Duration, job.State)\n\n\tif job.MonitoringStatus == schema.MonitoringStatusDisabled {\n\t\treturn\n\t}\n\n\tarchiver.TriggerArchiving(job)\n}\n\n// processNodestateEvent extracts and processes node state data from the InfluxDB message.\n// Updates node states in the repository for all nodes in the payload.\nfunc (api *NatsAPI) processNodestateEvent(msg lp.CCMessage) {\n\tv, ok := msg.GetEventValue()\n\tif !ok {\n\t\tcclog.Errorf(\"Nodestate event is missing event field with JSON payload\")\n\t\treturn\n\t}\n\n\tvar req UpdateNodeStatesRequest\n\n\tdec := json.NewDecoder(strings.NewReader(v))\n\tdec.DisallowUnknownFields()\n\tif err := dec.Decode(&req); err != nil {\n\t\tcclog.Errorf(\"NATS nodestate: parsing request failed: %v\", err)\n\t\treturn\n\t}\n\n\trepo := repository.GetNodeRepository()\n\trequestReceived := time.Now().Unix()\n\n\tupdates := make([]repository.NodeStateUpdate, 0, len(req.Nodes))\n\tfor _, node := range req.Nodes {\n\t\tstate := determineState(node.States)\n\t\tnodeState := schema.NodeStateDB{\n\t\t\tTimeStamp:       requestReceived,\n\t\t\tNodeState:       state,\n\t\t\tCpusAllocated:   node.CpusAllocated,\n\t\t\tMemoryAllocated: node.MemoryAllocated,\n\t\t\tGpusAllocated:   node.GpusAllocated,\n\t\t\tHealthState:     schema.MonitoringStateFull,\n\t\t\tJobsRunning:     node.JobsRunning,\n\t\t}\n\t\tupdates = append(updates, repository.NodeStateUpdate{\n\t\t\tHostname:  node.Hostname,\n\t\t\tCluster:   req.Cluster,\n\t\t\tNodeState: &nodeState,\n\t\t})\n\t}\n\n\tif err := repo.BatchUpdateNodeStates(updates); err != nil {\n\t\tcclog.Errorf(\"NATS nodestate: batch update for cluster %s failed: %v\", req.Cluster, err)\n\t}\n\n\tcclog.Debugf(\"NATS nodestate: updated %d node states for cluster %s\", len(req.Nodes), req.Cluster)\n}\n\n// handleNodeState processes node state update messages received via NATS using InfluxDB line protocol.\n// The message must be in line protocol format with measurement=\"nodestate\" and include:\n//   - field \"event\" containing JSON payload (UpdateNodeStatesRequest)\n//\n// Example: nodestate event=\"{\\\"cluster\\\":\\\"testcluster\\\",\\\"nodes\\\":[...]}\" 1234567890000000000\nfunc (api *NatsAPI) handleNodeState(subject string, data []byte) {\n\tif len(data) == 0 {\n\t\tcclog.Warnf(\"NATS %s: received empty message\", subject)\n\t\treturn\n\t}\n\n\td := influx.NewDecoderWithBytes(data)\n\n\tfor d.Next() {\n\t\tm, err := receivers.DecodeInfluxMessage(d)\n\t\tif err != nil {\n\t\t\tcclog.Errorf(\"NATS %s: failed to decode InfluxDB line protocol message: %v\", subject, err)\n\t\t\treturn\n\t\t}\n\n\t\tif !m.IsEvent() {\n\t\t\tcclog.Warnf(\"NATS %s: received non-event message, skipping\", subject)\n\t\t\tcontinue\n\t\t}\n\n\t\tif m.Name() == \"nodestate\" {\n\t\t\tapi.processNodestateEvent(m)\n\t\t} else {\n\t\t\tcclog.Warnf(\"NATS %s: unexpected measurement name '%s', expected 'nodestate'\", subject, m.Name())\n\t\t}\n\t}\n}\n","structuredPatch":[{"oldStart":402,"oldLines":16,"newStart":402,"newLines":55,"lines":["   repo := repository.GetNodeRepository()","   requestReceived := time.Now().Unix()"," ","+  // Build nodeList per subcluster for health check","+  m := make(map[string][]string)","+  metricNames := make(map[string][]string)","+  healthResults := make(map[string]metricstore.HealthCheckResult)","+","+  for _, node := range req.Nodes {","+    if sc, err := archive.GetSubClusterByNode(req.Cluster, node.Hostname); err == nil {","+      m[sc] = append(m[sc], node.Hostname)","+    }","+  }","+","+  for sc := range m {","+    if sc != \"\" {","+      metricList := archive.GetMetricConfigSubCluster(req.Cluster, sc)","+      metricNames[sc] = metricListToNames(metricList)","+    }","+  }","+","+  // Perform health check against metric store","+  healthRepo, err := metricdispatch.GetHealthCheckRepo(req.Cluster)","+  if err != nil {","+    cclog.Warnf(\"NATS nodestate: no metric store for cluster %s, skipping health check: %v\", req.Cluster, err)","+  } else {","+    for sc, nl := range m {","+      if sc != \"\" {","+        if results, err := healthRepo.HealthCheck(req.Cluster, nl, metricNames[sc]); err == nil {","+          maps.Copy(healthResults, results)","+        }","+      }","+    }","+  }","+","   updates := make([]repository.NodeStateUpdate, 0, len(req.Nodes))","   for _, node := range req.Nodes {","     state := determineState(node.States)","+    healthState := schema.MonitoringStateFailed","+    var healthMetrics string","+    if result, ok := healthResults[node.Hostname]; ok {","+      healthState = result.State","+      healthMetrics = result.HealthMetrics","+    }","     nodeState := schema.NodeStateDB{","       TimeStamp:       requestReceived,","       NodeState:       state,","       CpusAllocated:   node.CpusAllocated,","       MemoryAllocated: node.MemoryAllocated,","       GpusAllocated:   node.GpusAllocated,","-      HealthState:     schema.MonitoringStateFull,","+      HealthState:     healthState,","+      HealthMetrics:   healthMetrics,","       JobsRunning:     node.JobsRunning,","     }","     updates = append(updates, repository.NodeStateUpdate{"]}],"userModified":false,"replaceAll":false},"sourceToolAssistantUUID":"52e6e038-207f-4ba4-bd98-7b54ad27dad1","userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"23bd02ee-e611-4488-a3d4-71ca93985943","version":"2.1.76","gitBranch":"hotfix","slug":"magical-sauteeing-gosling"}
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+{"parentUuid":"5ce0bbf2-350a-4cdd-872a-e7b54bf3b3c3","isSidechain":false,"promptId":"c2bc230a-67ed-4f5e-b42f-f832728effa2","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01Ri93GdxMDAJASoXPXA7YAe","type":"tool_result","content":"=== RUN   TestNatsHandleStartJob\n<6>[INFO]     2026/03/16 12:02:24 migration.go:122: Legacy database without version or missing database file!\n<6>[INFO]     2026/03/16 12:02:24 migration.go:129: unsupported database version 0, need 11.\nPlease backup your database file and run cc-backend -migrate-db\n<6>[INFO]     2026/03/16 12:02:24 dbConnection.go:96: SQLite config: cache_size=2048MB/conn, soft_heap_limit=16384MB, max_conns=4\n<6>[INFO]     2026/03/16 12:02:24 archive.go:230: Load archive version 3\n<4>[WARNING]  2026/03/16 12:02:24 auth.go:185: environment variable 'SESSION_KEY' not set (will use non-persistent random key)\n<6>[INFO]     2026/03/16 12:02:24 auth.go:223: Missing LDAP configuration: No LDAP support!\n<4>[WARNING]  2026/03/16 12:02:24 jwt.go:52: environment variables 'JWT_PUBLIC_KEY' or 'JWT_PRIVATE_KEY' not set (token based authentication will not work)\n<6>[INFO]     2026/03/16 12:02:24 jwtSession.go:37: JWT Session authenticator successfully registered\n<4>[WARNING]  2026/03/16 12:02:24 jwtCookieSession.go:31: environment variables 'JWT_PUBLIC_KEY' or 'JWT_PRIVATE_KEY' not set (token based authentication will not work)\n<6>[INFO]     2026/03/16 12:02:24 auth.go:241: jwtCookieSessionAuth init failed: No JWT cookie login support!\n=== RUN   TestNatsHandleStartJob/valid_job_start\n<6>[INFO]     2026/03/16 12:02:24 nats.go:292: NATS: new job (id: 1): cluster=testcluster, jobId=1001, user=testuser1, startTime=1234567890\n=== RUN   TestNatsHandleStartJob/invalid_JSON\n<3>[ERROR]    2026/03/16 12:02:24 /Users/jan/prg/ClusterCockpit/cc-backend/internal/api/nats.go:240: NATS start job: parsing request failed: json: cannot unmarshal string into Go struct field Job.jobId of type int64\n=== RUN   TestNatsHandleStartJob/missing_required_fields\n<3>[ERROR]    2026/03/16 12:02:24 /Users/jan/prg/ClusterCockpit/cc-backend/internal/api/nats.go:248: NATS start job: sanity check failed: no such cluster: \n=== RUN   TestNatsHandleStartJob/job_with_unknown_fields_(should_fail_due_to_DisallowUnknownFields)\n<3>[ERROR]    2026/03/16 12:02:25 /Users/jan/prg/ClusterCockpit/cc-backend/internal/api/nats.go:240: NATS start job: parsing request failed: json: unknown field \"unknownField\"\n=== RUN   TestNatsHandleStartJob/job_with_tags\n<3>[ERROR]    2026/03/16 12:02:25 /Users/jan/prg/ClusterCockpit/cc-backend/internal/api/nats.go:287: NATS start job: adding tag to new job 2 failed: error while checking tag operation auth: no user in context\n<6>[INFO]     2026/03/16 12:02:25 archiveWorker.go:223: Initiating archiver shutdown...\n<6>[INFO]     2026/03/16 12:02:25 archiveWorker.go:238: All archive jobs completed successfully\n<6>[INFO]     2026/03/16 12:02:25 archiveWorker.go:121: Archive channel closed, worker exiting\n--- PASS: TestNatsHandleStartJob (0.54s)\n    --- PASS: TestNatsHandleStartJob/valid_job_start (0.10s)\n    --- PASS: TestNatsHandleStartJob/invalid_JSON (0.10s)\n    --- PASS: TestNatsHandleStartJob/missing_required_fields (0.10s)\n    --- PASS: TestNatsHandleStartJob/job_with_unknown_fields_(should_fail_due_to_DisallowUnknownFields) (0.10s)\n    --- PASS: TestNatsHandleStartJob/job_with_tags (0.11s)\n=== RUN   TestNatsHandleStopJob\n<6>[INFO]     2026/03/16 12:02:25 migration.go:122: Legacy database without version or missing database file!\n<6>[INFO]     2026/03/16 12:02:25 migration.go:129: unsupported database version 0, need 11.\nPlease backup your database file and run cc-backend -migrate-db\n<6>[INFO]     2026/03/16 12:02:25 dbConnection.go:96: SQLite config: cache_size=2048MB/conn, soft_heap_limit=16384MB, max_conns=4\n<6>[INFO]     2026/03/16 12:02:25 nats.go:292: NATS: new job (id: 1): cluster=testcluster, jobId=2001, user=testuser, startTime=1234567890\n=== RUN   TestNatsHandleStopJob/valid_job_stop_-_completed\n<4>[WARNING]  2026/03/16 12:02:25 job.go:162: Error while scanning rows (Job): sql: no rows in result set\n<6>[INFO]     2026/03/16 12:02:25 nats.go:374: NATS: archiving job (dbid: 1): cluster=testcluster, jobId=2001, user=testuser, startTime=1234567890, duration=3600, state=completed\n<3>[ERROR]    2026/03/16 12:02:25 /Users/jan/prg/ClusterCockpit/cc-backend/internal/metricdispatch/dataLoader.go:100: failed to access metricDataRepo for cluster testcluster-sc1: [METRICDISPATCH]> no metric data repository configured 'testcluster-sc1'\n<3>[ERROR]    2026/03/16 12:02:25 /Users/jan/prg/ClusterCockpit/cc-backend/internal/metricdispatch/dataLoader.go:225: error in cached dataset for job 2001: [METRICDISPATCH]> no metric data repository configured 'testcluster-sc1'\n<3>[ERROR]    2026/03/16 12:02:25 /Users/jan/prg/ClusterCockpit/cc-backend/internal/archiver/archiver.go:64: Error wile loading job data for archiving\n<3>[ERROR]    2026/03/16 12:02:25 /Users/jan/prg/ClusterCockpit/cc-backend/internal/archiver/archiveWorker.go:139: archiving job (dbid: 1) failed at archiving job step: [METRICDISPATCH]> no metric data repository configured 'testcluster-sc1'\n=== RUN   TestNatsHandleStopJob/valid_job_stop_-_failed\n<6>[INFO]     2026/03/16 12:02:25 nats.go:292: NATS: new job (id: 1): cluster=testcluster, jobId=2002, user=testuser, startTime=1234567900\n<4>[WARNING]  2026/03/16 12:02:25 job.go:162: Error while scanning rows (Job): sql: no rows in result set\n<6>[INFO]     2026/03/16 12:02:25 nats.go:374: NATS: archiving job (dbid: 2): cluster=testcluster, jobId=2002, user=testuser, startTime=1234567900, duration=2000, state=failed\n<3>[ERROR]    2026/03/16 12:02:25 /Users/jan/prg/ClusterCockpit/cc-backend/internal/metricdispatch/dataLoader.go:100: failed to access metricDataRepo for cluster testcluster-sc1: [METRICDISPATCH]> no metric data repository configured 'testcluster-sc1'\n<3>[ERROR]    2026/03/16 12:02:25 /Users/jan/prg/ClusterCockpit/cc-backend/internal/metricdispatch/dataLoader.go:225: error in cached dataset for job 2002: [METRICDISPATCH]> no metric data repository configured 'testcluster-sc1'\n<3>[ERROR]    2026/03/16 12:02:25 /Users/jan/prg/ClusterCockpit/cc-backend/internal/archiver/archiver.go:64: Error wile loading job data for archiving\n<3>[ERROR]    2026/03/16 12:02:25 /Users/jan/prg/ClusterCockpit/cc-backend/internal/archiver/archiveWorker.go:139: archiving job (dbid: 2) failed at archiving job step: [METRICDISPATCH]> no metric data repository configured 'testcluster-sc1'\n=== RUN   TestNatsHandleStopJob/invalid_JSON\n<3>[ERROR]    2026/03/16 12:02:25 /Users/jan/prg/ClusterCockpit/cc-backend/internal/api/nats.go:309: NATS job stop: parsing request failed: json: cannot unmarshal string into Go struct field StopJobAPIRequest.jobId of type int64\n=== RUN   TestNatsHandleStopJob/missing_jobId\n<3>[ERROR]    2026/03/16 12:02:25 /Users/jan/prg/ClusterCockpit/cc-backend/internal/api/nats.go:314: NATS job stop: the field 'jobId' is required\n=== RUN   TestNatsHandleStopJob/invalid_job_state\n<6>[INFO]     2026/03/16 12:02:25 nats.go:292: NATS: new job (id: 1): cluster=testcluster, jobId=2003, user=testuser, startTime=1234567910\n<4>[WARNING]  2026/03/16 12:02:25 job.go:162: Error while scanning rows (Job): sql: no rows in result set\n<3>[ERROR]    2026/03/16 12:02:25 /Users/jan/prg/ClusterCockpit/cc-backend/internal/api/nats.go:344: NATS job stop: jobId 2003 (id 131105782031096) on testcluster: invalid job state: \"invalid_state\"\n=== RUN   TestNatsHandleStopJob/stopTime_before_startTime\n<6>[INFO]     2026/03/16 12:02:26 nats.go:292: NATS: new job (id: 1): cluster=testcluster, jobId=2004, user=testuser, startTime=1234567920\n<4>[WARNING]  2026/03/16 12:02:26 job.go:162: Error while scanning rows (Job): sql: no rows in result set\n<3>[ERROR]    2026/03/16 12:02:26 /Users/jan/prg/ClusterCockpit/cc-backend/internal/api/nats.go:338: NATS job stop: jobId 2004 (id 131105782034360) on testcluster: stopTime 1234567900 must be >= startTime 1234567920\n=== RUN   TestNatsHandleStopJob/job_not_found\n<4>[WARNING]  2026/03/16 12:02:26 job.go:162: Error while scanning rows (Job): sql: no rows in result set\n<4>[WARNING]  2026/03/16 12:02:26 job.go:162: Error while scanning rows (Job): sql: no rows in result set\n<3>[ERROR]    2026/03/16 12:02:26 /Users/jan/prg/ClusterCockpit/cc-backend/internal/api/nats.go:324: NATS job stop: finding job failed: sql: no rows in result set\n<6>[INFO]     2026/03/16 12:02:26 archiveWorker.go:223: Initiating archiver shutdown...\n<6>[INFO]     2026/03/16 12:02:26 archiveWorker.go:238: All archive jobs completed successfully\n<6>[INFO]     2026/03/16 12:02:26 archiveWorker.go:121: Archive channel closed, worker exiting\n--- PASS: TestNatsHandleStopJob (1.17s)\n    --- PASS: TestNatsHandleStopJob/valid_job_stop_-_completed (0.10s)\n    --- PASS: TestNatsHandleStopJob/valid_job_stop_-_failed (0.21s)\n    --- PASS: TestNatsHandleStopJob/invalid_JSON (0.10s)\n    --- PASS: TestNatsHandleStopJob/missing_jobId (0.10s)\n    --- PASS: TestNatsHandleStopJob/invalid_job_state (0.20s)\n    --- PASS: TestNatsHandleStopJob/stopTime_before_startTime (0.20s)\n    --- PASS: TestNatsHandleStopJob/job_not_found (0.10s)\n=== RUN   TestNatsHandleNodeState\n<6>[INFO]     2026/03/16 12:02:26 migration.go:122: Legacy database without version or missing database file!\n<6>[INFO]     2026/03/16 12:02:26 migration.go:129: unsupported database version 0, need 11.\nPlease backup your database file and run cc-backend -migrate-db\n<6>[INFO]     2026/03/16 12:02:26 dbConnection.go:96: SQLite config: cache_size=2048MB/conn, soft_heap_limit=16384MB, max_conns=4\n=== RUN   TestNatsHandleNodeState/valid_node_state_update\n<4>[WARNING]  2026/03/16 12:02:26 nats.go:426: NATS nodestate: no metric store for cluster testcluster, skipping health check: [METRICDISPATCH]> no metric data repository configured 'testcluster-'\n=== RUN   TestNatsHandleNodeState/multiple_nodes\n<4>[WARNING]  2026/03/16 12:02:26 nats.go:426: NATS nodestate: no metric store for cluster testcluster, skipping health check: [METRICDISPATCH]> no metric data repository configured 'testcluster-'\n=== RUN   TestNatsHandleNodeState/invalid_JSON_in_event_field\n<3>[ERROR]    2026/03/16 12:02:26 /Users/jan/prg/ClusterCockpit/cc-backend/internal/api/nats.go:398: NATS nodestate: parsing request failed: json: cannot unmarshal string into Go struct field UpdateNodeStatesRequest.nodes of type []schema.NodePayload\n=== RUN   TestNatsHandleNodeState/empty_nodes_array\n<4>[WARNING]  2026/03/16 12:02:26 nats.go:426: NATS nodestate: no metric store for cluster testcluster, skipping health check: [METRICDISPATCH]> no metric data repository configured 'testcluster-'\n=== RUN   TestNatsHandleNodeState/invalid_line_protocol_format\n<3>[ERROR]    2026/03/16 12:02:26 /Users/jan/prg/ClusterCockpit/cc-backend/internal/api/nats.go:486: NATS test.subject: failed to decode InfluxDB line protocol message: at line 1:13: want '=' after field key \"line\", found ' '\n=== RUN   TestNatsHandleNodeState/empty_data\n<4>[WARNING]  2026/03/16 12:02:26 nats.go:477: NATS test.subject: received empty message\n<6>[INFO]     2026/03/16 12:02:26 archiveWorker.go:223: Initiating archiver shutdown...\n<6>[INFO]     2026/03/16 12:02:26 archiveWorker.go:238: All archive jobs completed successfully\n<6>[INFO]     2026/03/16 12:02:26 archiveWorker.go:121: Archive channel closed, worker exiting\n--- PASS: TestNatsHandleNodeState (0.36s)\n    --- PASS: TestNatsHandleNodeState/valid_node_state_update (0.05s)\n    --- PASS: TestNatsHandleNodeState/multiple_nodes (0.05s)\n    --- PASS: TestNatsHandleNodeState/invalid_JSON_in_event_field (0.05s)\n    --- PASS: TestNatsHandleNodeState/empty_nodes_array (0.05s)\n    --- PASS: TestNatsHandleNodeState/invalid_line_protocol_format (0.05s)\n    --- PASS: TestNatsHandleNodeState/empty_data (0.05s)\n=== RUN   TestNatsProcessJobEvent\n<6>[INFO]     2026/03/16 12:02:26 migration.go:122: Legacy database without version or missing database file!\n<6>[INFO]     2026/03/16 12:02:26 migration.go:129: unsupported database version 0, need 11.\nPlease backup your database file and run cc-backend -migrate-db\n<6>[INFO]     2026/03/16 12:02:26 dbConnection.go:96: SQLite config: cache_size=2048MB/conn, soft_heap_limit=16384MB, max_conns=4\n=== RUN   TestNatsProcessJobEvent/start_job_function\n<6>[INFO]     2026/03/16 12:02:26 nats.go:292: NATS: new job (id: 1): cluster=testcluster, jobId=3001, user=testuser, startTime=1234567890\n=== RUN   TestNatsProcessJobEvent/missing_function_tag\n<3>[ERROR]    2026/03/16 12:02:26 /Users/jan/prg/ClusterCockpit/cc-backend/internal/api/nats.go:164: Job event is missing required tag 'function': measurement=job\n=== RUN   TestNatsProcessJobEvent/unknown_function\n<4>[WARNING]  2026/03/16 12:02:26 nats.go:186: Unknown job event function 'unknown_function', expected 'start_job' or 'stop_job'\n<6>[INFO]     2026/03/16 12:02:26 archiveWorker.go:223: Initiating archiver shutdown...\n<6>[INFO]     2026/03/16 12:02:26 archiveWorker.go:238: All archive jobs completed successfully\n<6>[INFO]     2026/03/16 12:02:26 archiveWorker.go:121: Archive channel closed, worker exiting\n--- PASS: TestNatsProcessJobEvent (0.21s)\n    --- PASS: TestNatsProcessJobEvent/start_job_function (0.05s)\n    --- PASS: TestNatsProcessJobEvent/missing_function_tag (0.05s)\n    --- PASS: TestNatsProcessJobEvent/unknown_function (0.05s)\n=== RUN   TestNatsHandleJobEvent\n<6>[INFO]     2026/03/16 12:02:26 migration.go:122: Legacy database without version or missing database file!\n<6>[INFO]     2026/03/16 12:02:26 migration.go:129: unsupported database version 0, need 11.\nPlease backup your database file and run cc-backend -migrate-db\n<6>[INFO]     2026/03/16 12:02:27 dbConnection.go:96: SQLite config: cache_size=2048MB/conn, soft_heap_limit=16384MB, max_conns=4\n=== RUN   TestNatsHandleJobEvent/valid_influx_line_protocol\n<6>[INFO]     2026/03/16 12:02:27 nats.go:292: NATS: new job (id: 1): cluster=testcluster, jobId=4001, user=testuser, startTime=1234567890\n=== RUN   TestNatsHandleJobEvent/invalid_influx_line_protocol\n<3>[ERROR]    2026/03/16 12:02:27 /Users/jan/prg/ClusterCockpit/cc-backend/internal/api/nats.go:207: NATS test.subject: failed to decode InfluxDB line protocol message: at line 1:13: want '=' after field key \"line\", found ' '\n=== RUN   TestNatsHandleJobEvent/empty_data\n<4>[WARNING]  2026/03/16 12:02:27 nats.go:198: NATS test.subject: received empty message\n<6>[INFO]     2026/03/16 12:02:27 archiveWorker.go:223: Initiating archiver shutdown...\n<6>[INFO]     2026/03/16 12:02:27 archiveWorker.go:238: All archive jobs completed successfully\n<6>[INFO]     2026/03/16 12:02:27 archiveWorker.go:121: Archive channel closed, worker exiting\n--- PASS: TestNatsHandleJobEvent (0.20s)\n    --- PASS: TestNatsHandleJobEvent/valid_influx_line_protocol (0.05s)\n    --- PASS: TestNatsHandleJobEvent/invalid_influx_line_protocol (0.05s)\n    --- PASS: TestNatsHandleJobEvent/empty_data (0.05s)\n=== RUN   TestNatsHandleJobEventEdgeCases\n<6>[INFO]     2026/03/16 12:02:27 migration.go:122: Legacy database without version or missing database file!\n<6>[INFO]     2026/03/16 12:02:27 migration.go:129: unsupported database version 0, need 11.\nPlease backup your database file and run cc-backend -migrate-db\n<6>[INFO]     2026/03/16 12:02:27 dbConnection.go:96: SQLite config: cache_size=2048MB/conn, soft_heap_limit=16384MB, max_conns=4\n=== RUN   TestNatsHandleJobEventEdgeCases/non-event_message_(metric_data)\n=== RUN   TestNatsHandleJobEventEdgeCases/wrong_measurement_name\n=== RUN   TestNatsHandleJobEventEdgeCases/missing_event_field\n=== RUN   TestNatsHandleJobEventEdgeCases/multiple_measurements_in_one_message\n<3>[ERROR]    2026/03/16 12:02:27 /Users/jan/prg/ClusterCockpit/cc-backend/internal/api/nats.go:248: NATS start job: sanity check failed: no such cluster: \n<3>[ERROR]    2026/03/16 12:02:27 /Users/jan/prg/ClusterCockpit/cc-backend/internal/api/nats.go:314: NATS job stop: the field 'jobId' is required\n=== RUN   TestNatsHandleJobEventEdgeCases/escaped_quotes_in_JSON_payload\n<3>[ERROR]    2026/03/16 12:02:27 /Users/jan/prg/ClusterCockpit/cc-backend/internal/api/nats.go:248: NATS start job: sanity check failed: no such cluster: test\n<6>[INFO]     2026/03/16 12:02:27 archiveWorker.go:223: Initiating archiver shutdown...\n<6>[INFO]     2026/03/16 12:02:27 archiveWorker.go:238: All archive jobs completed successfully\n<6>[INFO]     2026/03/16 12:02:27 archiveWorker.go:121: Archive channel closed, worker exiting\n--- PASS: TestNatsHandleJobEventEdgeCases (0.30s)\n    --- PASS: TestNatsHandleJobEventEdgeCases/non-event_message_(metric_data) (0.05s)\n    --- PASS: TestNatsHandleJobEventEdgeCases/wrong_measurement_name (0.05s)\n    --- PASS: TestNatsHandleJobEventEdgeCases/missing_event_field (0.05s)\n    --- PASS: TestNatsHandleJobEventEdgeCases/multiple_measurements_in_one_message (0.05s)\n    --- PASS: TestNatsHandleJobEventEdgeCases/escaped_quotes_in_JSON_payload (0.05s)\n=== RUN   TestNatsHandleNodeStateEdgeCases\n<6>[INFO]     2026/03/16 12:02:27 migration.go:122: Legacy database without version or missing database file!\n<6>[INFO]     2026/03/16 12:02:27 migration.go:129: unsupported database version 0, need 11.\nPlease backup your database file and run cc-backend -migrate-db\n<6>[INFO]     2026/03/16 12:02:27 dbConnection.go:96: SQLite config: cache_size=2048MB/conn, soft_heap_limit=16384MB, max_conns=4\n=== RUN   TestNatsHandleNodeStateEdgeCases/missing_cluster_field_in_JSON\n<4>[WARNING]  2026/03/16 12:02:27 nats.go:426: NATS nodestate: no metric store for cluster , skipping health check: [METRICDISPATCH]> no metric data repository configured '-'\n=== RUN   TestNatsHandleNodeStateEdgeCases/malformed_JSON_with_unescaped_quotes\n<3>[ERROR]    2026/03/16 12:02:27 /Users/jan/prg/ClusterCockpit/cc-backend/internal/api/nats.go:486: NATS test.subject: failed to decode InfluxDB line protocol message: at line 1:38: unexpected character 'c' after field \"event\"\n=== RUN   TestNatsHandleNodeStateEdgeCases/unicode_characters_in_hostname\n<4>[WARNING]  2026/03/16 12:02:27 nats.go:426: NATS nodestate: no metric store for cluster testcluster, skipping health check: [METRICDISPATCH]> no metric data repository configured 'testcluster-'\n<3>[ERROR]    2026/03/16 12:02:27 /Users/jan/prg/ClusterCockpit/cc-backend/internal/repository/node.go:288: BatchUpdateNodeStates: subcluster lookup for 'host-ñ123' in 'testcluster': ARCHIVE/CLUSTERCONFIG > no subcluster found for cluster testcluster and host host-ñ123\n=== RUN   TestNatsHandleNodeStateEdgeCases/very_large_node_count\n<4>[WARNING]  2026/03/16 12:02:27 nats.go:426: NATS nodestate: no metric store for cluster testcluster, skipping health check: [METRICDISPATCH]> no metric data repository configured 'testcluster-'\n<3>[ERROR]    2026/03/16 12:02:27 /Users/jan/prg/ClusterCockpit/cc-backend/internal/repository/node.go:288: BatchUpdateNodeStates: subcluster lookup for 'node1' in 'testcluster': ARCHIVE/CLUSTERCONFIG > no subcluster found for cluster testcluster and host node1\n<3>[ERROR]    2026/03/16 12:02:27 /Users/jan/prg/ClusterCockpit/cc-backend/internal/repository/node.go:288: BatchUpdateNodeStates: subcluster lookup for 'node2' in 'testcluster': ARCHIVE/CLUSTERCONFIG > no subcluster found for cluster testcluster and host node2\n<3>[ERROR]    2026/03/16 12:02:27 /Users/jan/prg/ClusterCockpit/cc-backend/internal/repository/node.go:288: BatchUpdateNodeStates: subcluster lookup for 'node3' in 'testcluster': ARCHIVE/CLUSTERCONFIG > no subcluster found for cluster testcluster and host node3\n=== RUN   TestNatsHandleNodeStateEdgeCases/timestamp_in_past\n<4>[WARNING]  2026/03/16 12:02:27 nats.go:426: NATS nodestate: no metric store for cluster testcluster, skipping health check: [METRICDISPATCH]> no metric data repository configured 'testcluster-'\n<6>[INFO]     2026/03/16 12:02:27 archiveWorker.go:223: Initiating archiver shutdown...\n<6>[INFO]     2026/03/16 12:02:27 archiveWorker.go:238: All archive jobs completed successfully\n<6>[INFO]     2026/03/16 12:02:27 archiveWorker.go:121: Archive channel closed, worker exiting\n--- PASS: TestNatsHandleNodeStateEdgeCases (0.30s)\n    --- PASS: TestNatsHandleNodeStateEdgeCases/missing_cluster_field_in_JSON (0.05s)\n    --- PASS: TestNatsHandleNodeStateEdgeCases/malformed_JSON_with_unescaped_quotes (0.05s)\n    --- PASS: TestNatsHandleNodeStateEdgeCases/unicode_characters_in_hostname (0.05s)\n    --- PASS: TestNatsHandleNodeStateEdgeCases/very_large_node_count (0.05s)\n    --- PASS: TestNatsHandleNodeStateEdgeCases/timestamp_in_past (0.05s)\n=== RUN   TestNatsHandleStartJobDuplicatePrevention\n<6>[INFO]     2026/03/16 12:02:27 migration.go:122: Legacy database without version or missing database file!\n<6>[INFO]     2026/03/16 12:02:27 migration.go:129: unsupported database version 0, need 11.\nPlease backup your database file and run cc-backend -migrate-db\n<6>[INFO]     2026/03/16 12:02:27 dbConnection.go:96: SQLite config: cache_size=2048MB/conn, soft_heap_limit=16384MB, max_conns=4\n<6>[INFO]     2026/03/16 12:02:27 nats.go:292: NATS: new job (id: 1): cluster=testcluster, jobId=5001, user=testuser, startTime=1234567890\n<3>[ERROR]    2026/03/16 12:02:27 /Users/jan/prg/ClusterCockpit/cc-backend/internal/api/nats.go:264: NATS start job: job with jobId 5001, cluster testcluster already exists (dbid: 131105780598920)\n<6>[INFO]     2026/03/16 12:02:28 archiveWorker.go:223: Initiating archiver shutdown...\n<6>[INFO]     2026/03/16 12:02:28 archiveWorker.go:238: All archive jobs completed successfully\n<6>[INFO]     2026/03/16 12:02:28 archiveWorker.go:121: Archive channel closed, worker exiting\n--- PASS: TestNatsHandleStartJobDuplicatePrevention (0.25s)\nPASS\nok  \tgithub.com/ClusterCockpit/cc-backend/internal/api\t3.952s","is_error":false}]},"uuid":"f37c2bde-401d-4bde-be0a-9ca6d5866e7f","timestamp":"2026-03-16T11:02:28.095Z","toolUseResult":{"stdout":"=== RUN   TestNatsHandleStartJob\n<6>[INFO]     2026/03/16 12:02:24 migration.go:122: Legacy database without version or missing database file!\n<6>[INFO]     2026/03/16 12:02:24 migration.go:129: unsupported database version 0, need 11.\nPlease backup your database file and run cc-backend -migrate-db\n<6>[INFO]     2026/03/16 12:02:24 dbConnection.go:96: SQLite config: cache_size=2048MB/conn, soft_heap_limit=16384MB, max_conns=4\n<6>[INFO]     2026/03/16 12:02:24 archive.go:230: Load archive version 3\n<4>[WARNING]  2026/03/16 12:02:24 auth.go:185: environment variable 'SESSION_KEY' not set (will use non-persistent random key)\n<6>[INFO]     2026/03/16 12:02:24 auth.go:223: Missing LDAP configuration: No LDAP support!\n<4>[WARNING]  2026/03/16 12:02:24 jwt.go:52: environment variables 'JWT_PUBLIC_KEY' or 'JWT_PRIVATE_KEY' not set (token based authentication will not work)\n<6>[INFO]     2026/03/16 12:02:24 jwtSession.go:37: JWT Session authenticator successfully registered\n<4>[WARNING]  2026/03/16 12:02:24 jwtCookieSession.go:31: environment variables 'JWT_PUBLIC_KEY' or 'JWT_PRIVATE_KEY' not set (token based authentication will not work)\n<6>[INFO]     2026/03/16 12:02:24 auth.go:241: jwtCookieSessionAuth init failed: No JWT cookie login support!\n=== RUN   TestNatsHandleStartJob/valid_job_start\n<6>[INFO]     2026/03/16 12:02:24 nats.go:292: NATS: new job (id: 1): cluster=testcluster, jobId=1001, user=testuser1, startTime=1234567890\n=== RUN   TestNatsHandleStartJob/invalid_JSON\n<3>[ERROR]    2026/03/16 12:02:24 /Users/jan/prg/ClusterCockpit/cc-backend/internal/api/nats.go:240: NATS start job: parsing request failed: json: cannot unmarshal string into Go struct field Job.jobId of type int64\n=== RUN   TestNatsHandleStartJob/missing_required_fields\n<3>[ERROR]    2026/03/16 12:02:24 /Users/jan/prg/ClusterCockpit/cc-backend/internal/api/nats.go:248: NATS start job: sanity check failed: no such cluster: \n=== RUN   TestNatsHandleStartJob/job_with_unknown_fields_(should_fail_due_to_DisallowUnknownFields)\n<3>[ERROR]    2026/03/16 12:02:25 /Users/jan/prg/ClusterCockpit/cc-backend/internal/api/nats.go:240: NATS start job: parsing request failed: json: unknown field \"unknownField\"\n=== RUN   TestNatsHandleStartJob/job_with_tags\n<3>[ERROR]    2026/03/16 12:02:25 /Users/jan/prg/ClusterCockpit/cc-backend/internal/api/nats.go:287: NATS start job: adding tag to new job 2 failed: error while checking tag operation auth: no user in context\n<6>[INFO]     2026/03/16 12:02:25 archiveWorker.go:223: Initiating archiver shutdown...\n<6>[INFO]     2026/03/16 12:02:25 archiveWorker.go:238: All archive jobs completed successfully\n<6>[INFO]     2026/03/16 12:02:25 archiveWorker.go:121: Archive channel closed, worker exiting\n--- PASS: TestNatsHandleStartJob (0.54s)\n    --- PASS: TestNatsHandleStartJob/valid_job_start (0.10s)\n    --- PASS: TestNatsHandleStartJob/invalid_JSON (0.10s)\n    --- PASS: TestNatsHandleStartJob/missing_required_fields (0.10s)\n    --- PASS: TestNatsHandleStartJob/job_with_unknown_fields_(should_fail_due_to_DisallowUnknownFields) (0.10s)\n    --- PASS: TestNatsHandleStartJob/job_with_tags (0.11s)\n=== RUN   TestNatsHandleStopJob\n<6>[INFO]     2026/03/16 12:02:25 migration.go:122: Legacy database without version or missing database file!\n<6>[INFO]     2026/03/16 12:02:25 migration.go:129: unsupported database version 0, need 11.\nPlease backup your database file and run cc-backend -migrate-db\n<6>[INFO]     2026/03/16 12:02:25 dbConnection.go:96: SQLite config: cache_size=2048MB/conn, soft_heap_limit=16384MB, max_conns=4\n<6>[INFO]     2026/03/16 12:02:25 nats.go:292: NATS: new job (id: 1): cluster=testcluster, jobId=2001, user=testuser, startTime=1234567890\n=== RUN   TestNatsHandleStopJob/valid_job_stop_-_completed\n<4>[WARNING]  2026/03/16 12:02:25 job.go:162: Error while scanning rows (Job): sql: no rows in result set\n<6>[INFO]     2026/03/16 12:02:25 nats.go:374: NATS: archiving job (dbid: 1): cluster=testcluster, jobId=2001, user=testuser, startTime=1234567890, duration=3600, state=completed\n<3>[ERROR]    2026/03/16 12:02:25 /Users/jan/prg/ClusterCockpit/cc-backend/internal/metricdispatch/dataLoader.go:100: failed to access metricDataRepo for cluster testcluster-sc1: [METRICDISPATCH]> no metric data repository configured 'testcluster-sc1'\n<3>[ERROR]    2026/03/16 12:02:25 /Users/jan/prg/ClusterCockpit/cc-backend/internal/metricdispatch/dataLoader.go:225: error in cached dataset for job 2001: [METRICDISPATCH]> no metric data repository configured 'testcluster-sc1'\n<3>[ERROR]    2026/03/16 12:02:25 /Users/jan/prg/ClusterCockpit/cc-backend/internal/archiver/archiver.go:64: Error wile loading job data for archiving\n<3>[ERROR]    2026/03/16 12:02:25 /Users/jan/prg/ClusterCockpit/cc-backend/internal/archiver/archiveWorker.go:139: archiving job (dbid: 1) failed at archiving job step: [METRICDISPATCH]> no metric data repository configured 'testcluster-sc1'\n=== RUN   TestNatsHandleStopJob/valid_job_stop_-_failed\n<6>[INFO]     2026/03/16 12:02:25 nats.go:292: NATS: new job (id: 1): cluster=testcluster, jobId=2002, user=testuser, startTime=1234567900\n<4>[WARNING]  2026/03/16 12:02:25 job.go:162: Error while scanning rows (Job): sql: no rows in result set\n<6>[INFO]     2026/03/16 12:02:25 nats.go:374: NATS: archiving job (dbid: 2): cluster=testcluster, jobId=2002, user=testuser, startTime=1234567900, duration=2000, state=failed\n<3>[ERROR]    2026/03/16 12:02:25 /Users/jan/prg/ClusterCockpit/cc-backend/internal/metricdispatch/dataLoader.go:100: failed to access metricDataRepo for cluster testcluster-sc1: [METRICDISPATCH]> no metric data repository configured 'testcluster-sc1'\n<3>[ERROR]    2026/03/16 12:02:25 /Users/jan/prg/ClusterCockpit/cc-backend/internal/metricdispatch/dataLoader.go:225: error in cached dataset for job 2002: [METRICDISPATCH]> no metric data repository configured 'testcluster-sc1'\n<3>[ERROR]    2026/03/16 12:02:25 /Users/jan/prg/ClusterCockpit/cc-backend/internal/archiver/archiver.go:64: Error wile loading job data for archiving\n<3>[ERROR]    2026/03/16 12:02:25 /Users/jan/prg/ClusterCockpit/cc-backend/internal/archiver/archiveWorker.go:139: archiving job (dbid: 2) failed at archiving job step: [METRICDISPATCH]> no metric data repository configured 'testcluster-sc1'\n=== RUN   TestNatsHandleStopJob/invalid_JSON\n<3>[ERROR]    2026/03/16 12:02:25 /Users/jan/prg/ClusterCockpit/cc-backend/internal/api/nats.go:309: NATS job stop: parsing request failed: json: cannot unmarshal string into Go struct field StopJobAPIRequest.jobId of type int64\n=== RUN   TestNatsHandleStopJob/missing_jobId\n<3>[ERROR]    2026/03/16 12:02:25 /Users/jan/prg/ClusterCockpit/cc-backend/internal/api/nats.go:314: NATS job stop: the field 'jobId' is required\n=== RUN   TestNatsHandleStopJob/invalid_job_state\n<6>[INFO]     2026/03/16 12:02:25 nats.go:292: NATS: new job (id: 1): cluster=testcluster, jobId=2003, user=testuser, startTime=1234567910\n<4>[WARNING]  2026/03/16 12:02:25 job.go:162: Error while scanning rows (Job): sql: no rows in result set\n<3>[ERROR]    2026/03/16 12:02:25 /Users/jan/prg/ClusterCockpit/cc-backend/internal/api/nats.go:344: NATS job stop: jobId 2003 (id 131105782031096) on testcluster: invalid job state: \"invalid_state\"\n=== RUN   TestNatsHandleStopJob/stopTime_before_startTime\n<6>[INFO]     2026/03/16 12:02:26 nats.go:292: NATS: new job (id: 1): cluster=testcluster, jobId=2004, user=testuser, startTime=1234567920\n<4>[WARNING]  2026/03/16 12:02:26 job.go:162: Error while scanning rows (Job): sql: no rows in result set\n<3>[ERROR]    2026/03/16 12:02:26 /Users/jan/prg/ClusterCockpit/cc-backend/internal/api/nats.go:338: NATS job stop: jobId 2004 (id 131105782034360) on testcluster: stopTime 1234567900 must be >= startTime 1234567920\n=== RUN   TestNatsHandleStopJob/job_not_found\n<4>[WARNING]  2026/03/16 12:02:26 job.go:162: Error while scanning rows (Job): sql: no rows in result set\n<4>[WARNING]  2026/03/16 12:02:26 job.go:162: Error while scanning rows (Job): sql: no rows in result set\n<3>[ERROR]    2026/03/16 12:02:26 /Users/jan/prg/ClusterCockpit/cc-backend/internal/api/nats.go:324: NATS job stop: finding job failed: sql: no rows in result set\n<6>[INFO]     2026/03/16 12:02:26 archiveWorker.go:223: Initiating archiver shutdown...\n<6>[INFO]     2026/03/16 12:02:26 archiveWorker.go:238: All archive jobs completed successfully\n<6>[INFO]     2026/03/16 12:02:26 archiveWorker.go:121: Archive channel closed, worker exiting\n--- PASS: TestNatsHandleStopJob (1.17s)\n    --- PASS: TestNatsHandleStopJob/valid_job_stop_-_completed (0.10s)\n    --- PASS: TestNatsHandleStopJob/valid_job_stop_-_failed (0.21s)\n    --- PASS: TestNatsHandleStopJob/invalid_JSON (0.10s)\n    --- PASS: TestNatsHandleStopJob/missing_jobId (0.10s)\n    --- PASS: TestNatsHandleStopJob/invalid_job_state (0.20s)\n    --- PASS: TestNatsHandleStopJob/stopTime_before_startTime (0.20s)\n    --- PASS: TestNatsHandleStopJob/job_not_found (0.10s)\n=== RUN   TestNatsHandleNodeState\n<6>[INFO]     2026/03/16 12:02:26 migration.go:122: Legacy database without version or missing database file!\n<6>[INFO]     2026/03/16 12:02:26 migration.go:129: unsupported database version 0, need 11.\nPlease backup your database file and run cc-backend -migrate-db\n<6>[INFO]     2026/03/16 12:02:26 dbConnection.go:96: SQLite config: cache_size=2048MB/conn, soft_heap_limit=16384MB, max_conns=4\n=== RUN   TestNatsHandleNodeState/valid_node_state_update\n<4>[WARNING]  2026/03/16 12:02:26 nats.go:426: NATS nodestate: no metric store for cluster testcluster, skipping health check: [METRICDISPATCH]> no metric data repository configured 'testcluster-'\n=== RUN   TestNatsHandleNodeState/multiple_nodes\n<4>[WARNING]  2026/03/16 12:02:26 nats.go:426: NATS nodestate: no metric store for cluster testcluster, skipping health check: [METRICDISPATCH]> no metric data repository configured 'testcluster-'\n=== RUN   TestNatsHandleNodeState/invalid_JSON_in_event_field\n<3>[ERROR]    2026/03/16 12:02:26 /Users/jan/prg/ClusterCockpit/cc-backend/internal/api/nats.go:398: NATS nodestate: parsing request failed: json: cannot unmarshal string into Go struct field UpdateNodeStatesRequest.nodes of type []schema.NodePayload\n=== RUN   TestNatsHandleNodeState/empty_nodes_array\n<4>[WARNING]  2026/03/16 12:02:26 nats.go:426: NATS nodestate: no metric store for cluster testcluster, skipping health check: [METRICDISPATCH]> no metric data repository configured 'testcluster-'\n=== RUN   TestNatsHandleNodeState/invalid_line_protocol_format\n<3>[ERROR]    2026/03/16 12:02:26 /Users/jan/prg/ClusterCockpit/cc-backend/internal/api/nats.go:486: NATS test.subject: failed to decode InfluxDB line protocol message: at line 1:13: want '=' after field key \"line\", found ' '\n=== RUN   TestNatsHandleNodeState/empty_data\n<4>[WARNING]  2026/03/16 12:02:26 nats.go:477: NATS test.subject: received empty message\n<6>[INFO]     2026/03/16 12:02:26 archiveWorker.go:223: Initiating archiver shutdown...\n<6>[INFO]     2026/03/16 12:02:26 archiveWorker.go:238: All archive jobs completed successfully\n<6>[INFO]     2026/03/16 12:02:26 archiveWorker.go:121: Archive channel closed, worker exiting\n--- PASS: TestNatsHandleNodeState (0.36s)\n    --- PASS: TestNatsHandleNodeState/valid_node_state_update (0.05s)\n    --- PASS: TestNatsHandleNodeState/multiple_nodes (0.05s)\n    --- PASS: TestNatsHandleNodeState/invalid_JSON_in_event_field (0.05s)\n    --- PASS: TestNatsHandleNodeState/empty_nodes_array (0.05s)\n    --- PASS: TestNatsHandleNodeState/invalid_line_protocol_format (0.05s)\n    --- PASS: TestNatsHandleNodeState/empty_data (0.05s)\n=== RUN   TestNatsProcessJobEvent\n<6>[INFO]     2026/03/16 12:02:26 migration.go:122: Legacy database without version or missing database file!\n<6>[INFO]     2026/03/16 12:02:26 migration.go:129: unsupported database version 0, need 11.\nPlease backup your database file and run cc-backend -migrate-db\n<6>[INFO]     2026/03/16 12:02:26 dbConnection.go:96: SQLite config: cache_size=2048MB/conn, soft_heap_limit=16384MB, max_conns=4\n=== RUN   TestNatsProcessJobEvent/start_job_function\n<6>[INFO]     2026/03/16 12:02:26 nats.go:292: NATS: new job (id: 1): cluster=testcluster, jobId=3001, user=testuser, startTime=1234567890\n=== RUN   TestNatsProcessJobEvent/missing_function_tag\n<3>[ERROR]    2026/03/16 12:02:26 /Users/jan/prg/ClusterCockpit/cc-backend/internal/api/nats.go:164: Job event is missing required tag 'function': measurement=job\n=== RUN   TestNatsProcessJobEvent/unknown_function\n<4>[WARNING]  2026/03/16 12:02:26 nats.go:186: Unknown job event function 'unknown_function', expected 'start_job' or 'stop_job'\n<6>[INFO]     2026/03/16 12:02:26 archiveWorker.go:223: Initiating archiver shutdown...\n<6>[INFO]     2026/03/16 12:02:26 archiveWorker.go:238: All archive jobs completed successfully\n<6>[INFO]     2026/03/16 12:02:26 archiveWorker.go:121: Archive channel closed, worker exiting\n--- PASS: TestNatsProcessJobEvent (0.21s)\n    --- PASS: TestNatsProcessJobEvent/start_job_function (0.05s)\n    --- PASS: TestNatsProcessJobEvent/missing_function_tag (0.05s)\n    --- PASS: TestNatsProcessJobEvent/unknown_function (0.05s)\n=== RUN   TestNatsHandleJobEvent\n<6>[INFO]     2026/03/16 12:02:26 migration.go:122: Legacy database without version or missing database file!\n<6>[INFO]     2026/03/16 12:02:26 migration.go:129: unsupported database version 0, need 11.\nPlease backup your database file and run cc-backend -migrate-db\n<6>[INFO]     2026/03/16 12:02:27 dbConnection.go:96: SQLite config: cache_size=2048MB/conn, soft_heap_limit=16384MB, max_conns=4\n=== RUN   TestNatsHandleJobEvent/valid_influx_line_protocol\n<6>[INFO]     2026/03/16 12:02:27 nats.go:292: NATS: new job (id: 1): cluster=testcluster, jobId=4001, user=testuser, startTime=1234567890\n=== RUN   TestNatsHandleJobEvent/invalid_influx_line_protocol\n<3>[ERROR]    2026/03/16 12:02:27 /Users/jan/prg/ClusterCockpit/cc-backend/internal/api/nats.go:207: NATS test.subject: failed to decode InfluxDB line protocol message: at line 1:13: want '=' after field key \"line\", found ' '\n=== RUN   TestNatsHandleJobEvent/empty_data\n<4>[WARNING]  2026/03/16 12:02:27 nats.go:198: NATS test.subject: received empty message\n<6>[INFO]     2026/03/16 12:02:27 archiveWorker.go:223: Initiating archiver shutdown...\n<6>[INFO]     2026/03/16 12:02:27 archiveWorker.go:238: All archive jobs completed successfully\n<6>[INFO]     2026/03/16 12:02:27 archiveWorker.go:121: Archive channel closed, worker exiting\n--- PASS: TestNatsHandleJobEvent (0.20s)\n    --- PASS: TestNatsHandleJobEvent/valid_influx_line_protocol (0.05s)\n    --- PASS: TestNatsHandleJobEvent/invalid_influx_line_protocol (0.05s)\n    --- PASS: TestNatsHandleJobEvent/empty_data (0.05s)\n=== RUN   TestNatsHandleJobEventEdgeCases\n<6>[INFO]     2026/03/16 12:02:27 migration.go:122: Legacy database without version or missing database file!\n<6>[INFO]     2026/03/16 12:02:27 migration.go:129: unsupported database version 0, need 11.\nPlease backup your database file and run cc-backend -migrate-db\n<6>[INFO]     2026/03/16 12:02:27 dbConnection.go:96: SQLite config: cache_size=2048MB/conn, soft_heap_limit=16384MB, max_conns=4\n=== RUN   TestNatsHandleJobEventEdgeCases/non-event_message_(metric_data)\n=== RUN   TestNatsHandleJobEventEdgeCases/wrong_measurement_name\n=== RUN   TestNatsHandleJobEventEdgeCases/missing_event_field\n=== RUN   TestNatsHandleJobEventEdgeCases/multiple_measurements_in_one_message\n<3>[ERROR]    2026/03/16 12:02:27 /Users/jan/prg/ClusterCockpit/cc-backend/internal/api/nats.go:248: NATS start job: sanity check failed: no such cluster: \n<3>[ERROR]    2026/03/16 12:02:27 /Users/jan/prg/ClusterCockpit/cc-backend/internal/api/nats.go:314: NATS job stop: the field 'jobId' is required\n=== RUN   TestNatsHandleJobEventEdgeCases/escaped_quotes_in_JSON_payload\n<3>[ERROR]    2026/03/16 12:02:27 /Users/jan/prg/ClusterCockpit/cc-backend/internal/api/nats.go:248: NATS start job: sanity check failed: no such cluster: test\n<6>[INFO]     2026/03/16 12:02:27 archiveWorker.go:223: Initiating archiver shutdown...\n<6>[INFO]     2026/03/16 12:02:27 archiveWorker.go:238: All archive jobs completed successfully\n<6>[INFO]     2026/03/16 12:02:27 archiveWorker.go:121: Archive channel closed, worker exiting\n--- PASS: TestNatsHandleJobEventEdgeCases (0.30s)\n    --- PASS: TestNatsHandleJobEventEdgeCases/non-event_message_(metric_data) (0.05s)\n    --- PASS: TestNatsHandleJobEventEdgeCases/wrong_measurement_name (0.05s)\n    --- PASS: TestNatsHandleJobEventEdgeCases/missing_event_field (0.05s)\n    --- PASS: TestNatsHandleJobEventEdgeCases/multiple_measurements_in_one_message (0.05s)\n    --- PASS: TestNatsHandleJobEventEdgeCases/escaped_quotes_in_JSON_payload (0.05s)\n=== RUN   TestNatsHandleNodeStateEdgeCases\n<6>[INFO]     2026/03/16 12:02:27 migration.go:122: Legacy database without version or missing database file!\n<6>[INFO]     2026/03/16 12:02:27 migration.go:129: unsupported database version 0, need 11.\nPlease backup your database file and run cc-backend -migrate-db\n<6>[INFO]     2026/03/16 12:02:27 dbConnection.go:96: SQLite config: cache_size=2048MB/conn, soft_heap_limit=16384MB, max_conns=4\n=== RUN   TestNatsHandleNodeStateEdgeCases/missing_cluster_field_in_JSON\n<4>[WARNING]  2026/03/16 12:02:27 nats.go:426: NATS nodestate: no metric store for cluster , skipping health check: [METRICDISPATCH]> no metric data repository configured '-'\n=== RUN   TestNatsHandleNodeStateEdgeCases/malformed_JSON_with_unescaped_quotes\n<3>[ERROR]    2026/03/16 12:02:27 /Users/jan/prg/ClusterCockpit/cc-backend/internal/api/nats.go:486: NATS test.subject: failed to decode InfluxDB line protocol message: at line 1:38: unexpected character 'c' after field \"event\"\n=== RUN   TestNatsHandleNodeStateEdgeCases/unicode_characters_in_hostname\n<4>[WARNING]  2026/03/16 12:02:27 nats.go:426: NATS nodestate: no metric store for cluster testcluster, skipping health check: [METRICDISPATCH]> no metric data repository configured 'testcluster-'\n<3>[ERROR]    2026/03/16 12:02:27 /Users/jan/prg/ClusterCockpit/cc-backend/internal/repository/node.go:288: BatchUpdateNodeStates: subcluster lookup for 'host-ñ123' in 'testcluster': ARCHIVE/CLUSTERCONFIG > no subcluster found for cluster testcluster and host host-ñ123\n=== RUN   TestNatsHandleNodeStateEdgeCases/very_large_node_count\n<4>[WARNING]  2026/03/16 12:02:27 nats.go:426: NATS nodestate: no metric store for cluster testcluster, skipping health check: [METRICDISPATCH]> no metric data repository configured 'testcluster-'\n<3>[ERROR]    2026/03/16 12:02:27 /Users/jan/prg/ClusterCockpit/cc-backend/internal/repository/node.go:288: BatchUpdateNodeStates: subcluster lookup for 'node1' in 'testcluster': ARCHIVE/CLUSTERCONFIG > no subcluster found for cluster testcluster and host node1\n<3>[ERROR]    2026/03/16 12:02:27 /Users/jan/prg/ClusterCockpit/cc-backend/internal/repository/node.go:288: BatchUpdateNodeStates: subcluster lookup for 'node2' in 'testcluster': ARCHIVE/CLUSTERCONFIG > no subcluster found for cluster testcluster and host node2\n<3>[ERROR]    2026/03/16 12:02:27 /Users/jan/prg/ClusterCockpit/cc-backend/internal/repository/node.go:288: BatchUpdateNodeStates: subcluster lookup for 'node3' in 'testcluster': ARCHIVE/CLUSTERCONFIG > no subcluster found for cluster testcluster and host node3\n=== RUN   TestNatsHandleNodeStateEdgeCases/timestamp_in_past\n<4>[WARNING]  2026/03/16 12:02:27 nats.go:426: NATS nodestate: no metric store for cluster testcluster, skipping health check: [METRICDISPATCH]> no metric data repository configured 'testcluster-'\n<6>[INFO]     2026/03/16 12:02:27 archiveWorker.go:223: Initiating archiver shutdown...\n<6>[INFO]     2026/03/16 12:02:27 archiveWorker.go:238: All archive jobs completed successfully\n<6>[INFO]     2026/03/16 12:02:27 archiveWorker.go:121: Archive channel closed, worker exiting\n--- PASS: TestNatsHandleNodeStateEdgeCases (0.30s)\n    --- PASS: TestNatsHandleNodeStateEdgeCases/missing_cluster_field_in_JSON (0.05s)\n    --- PASS: TestNatsHandleNodeStateEdgeCases/malformed_JSON_with_unescaped_quotes (0.05s)\n    --- PASS: TestNatsHandleNodeStateEdgeCases/unicode_characters_in_hostname (0.05s)\n    --- PASS: TestNatsHandleNodeStateEdgeCases/very_large_node_count (0.05s)\n    --- PASS: TestNatsHandleNodeStateEdgeCases/timestamp_in_past (0.05s)\n=== RUN   TestNatsHandleStartJobDuplicatePrevention\n<6>[INFO]     2026/03/16 12:02:27 migration.go:122: Legacy database without version or missing database file!\n<6>[INFO]     2026/03/16 12:02:27 migration.go:129: unsupported database version 0, need 11.\nPlease backup your database file and run cc-backend -migrate-db\n<6>[INFO]     2026/03/16 12:02:27 dbConnection.go:96: SQLite config: cache_size=2048MB/conn, soft_heap_limit=16384MB, max_conns=4\n<6>[INFO]     2026/03/16 12:02:27 nats.go:292: NATS: new job (id: 1): cluster=testcluster, jobId=5001, user=testuser, startTime=1234567890\n<3>[ERROR]    2026/03/16 12:02:27 /Users/jan/prg/ClusterCockpit/cc-backend/internal/api/nats.go:264: NATS start job: job with jobId 5001, cluster testcluster already exists (dbid: 131105780598920)\n<6>[INFO]     2026/03/16 12:02:28 archiveWorker.go:223: Initiating archiver shutdown...\n<6>[INFO]     2026/03/16 12:02:28 archiveWorker.go:238: All archive jobs completed successfully\n<6>[INFO]     2026/03/16 12:02:28 archiveWorker.go:121: Archive channel closed, worker exiting\n--- 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This file is part of cc-backend.\n     3→// Use of this source code is governed by a MIT-style\n     4→// license that can be found in the LICENSE file.\n     5→\n     6→// Package config implements the program configuration data structures, validation and parsing\n     7→package config\n     8→\n     9→import (\n    10→\t\"bytes\"\n    11→\t\"encoding/json\"\n    12→\t\"time\"\n    13→\n    14→\tcclog \"github.com/ClusterCockpit/cc-lib/v2/ccLogger\"\n    15→\t\"github.com/ClusterCockpit/cc-lib/v2/resampler\"\n    16→)\n    17→\n    18→type ProgramConfig struct {\n    19→\t// Address where the http (or https) server will listen on (for example: 'localhost:80').\n    20→\tAddr string `json:\"addr\"`\n    21→\n    22→\t// Addresses from which secured admin API endpoints can be reached, can be wildcard \"*\"\n    23→\tAPIAllowedIPs []string `json:\"api-allowed-ips\"`\n    24→\n    25→\tAPISubjects *NATSConfig `json:\"api-subjects\"`\n    26→\n    27→\t// Drop root permissions once .env was read and the port was taken.\n    28→\tUser  string `json:\"user\"`\n    29→\tGroup string `json:\"group\"`\n    30→\n    31→\t// Disable authentication (for everything: API, Web-UI, ...)\n    32→\tDisableAuthentication bool `json:\"disable-authentication\"`\n    33→\n    34→\t// If `embed-static-files` is true (default), the frontend files are directly\n    35→\t// embeded into the go binary and expected to be in web/frontend. Only if\n    36→\t// it is false the files in `static-files` are served instead.\n    37→\tEmbedStaticFiles bool   `json:\"embed-static-files\"`\n    38→\tStaticFiles      string `json:\"static-files\"`\n    39→\n    40→\t// Path to SQLite database file\n    41→\tDB string `json:\"db\"`\n    42→\n    43→\tEnableJobTaggers bool `json:\"enable-job-taggers\"`\n    44→\n    45→\t// Validate json input against schema\n    46→\tValidate bool `json:\"validate\"`\n    47→\n    48→\t// If 0 or empty, the session does not expire!\n    49→\tSessionMaxAge string `json:\"session-max-age\"`\n    50→\n    51→\t// If both those options are not empty, use HTTPS using those certificates.\n    52→\tHTTPSCertFile string `json:\"https-cert-file\"`\n    53→\tHTTPSKeyFile  string `json:\"https-key-file\"`\n    54→\n    55→\t// If not the empty string and `addr` does not end in \":80\",\n    56→\t// redirect every request incoming at port 80 to that url.\n    57→\tRedirectHTTPTo string `json:\"redirect-http-to\"`\n    58→\n    59→\t// Where to store MachineState files\n    60→\tMachineStateDir string `json:\"machine-state-dir\"`\n    61→\n    62→\t// If not zero, automatically mark jobs as stopped running X seconds longer than their walltime.\n    63→\tStopJobsExceedingWalltime int `json:\"stop-jobs-exceeding-walltime\"`\n    64→\n    65→\t// Defines time X in seconds in which jobs are considered to be \"short\" and will be filtered in specific views.\n    66→\tShortRunningJobsDuration int `json:\"short-running-jobs-duration\"`\n    67→\n    68→\t// Energy Mix CO2 Emission Constant [g/kWh]\n    69→\t// If entered, displays estimated CO2 emission for job based on jobs totalEnergy\n    70→\tEmissionConstant int `json:\"emission-constant\"`\n    71→\n    72→\t// If exists, will enable dynamic zoom in frontend metric plots using the configured values\n    73→\tEnableResampling *ResampleConfig `json:\"resampling\"`\n    74→\n    75→\t// Systemd unit name for log viewer (default: \"clustercockpit\")\n    76→\tSystemdUnit string `json:\"systemd-unit\"`\n    77→\n    78→\t// Node state retention configuration\n    79→\tNodeStateRetention *NodeStateRetention `json:\"nodestate-retention\"`\n    80→\n    81→\t// Database tuning configuration\n    82→\tDbConfig *DbConfig `json:\"db-config\"`\n    83→}\n    84→\n    85→type DbConfig struct {\n    86→\tCacheSizeMB               int `json:\"cache-size-mb\"`\n    87→\tSoftHeapLimitMB           int `json:\"soft-heap-limit-mb\"`\n    88→\tMaxOpenConnections        int `json:\"max-open-connections\"`\n    89→\tMaxIdleConnections        int `json:\"max-idle-connections\"`\n    90→\tConnectionMaxIdleTimeMins int `json:\"max-idle-time-minutes\"`\n    91→\tBusyTimeoutMs             int `json:\"busy-timeout-ms\"`\n    92→}\n    93→\n    94→type NodeStateRetention struct {\n    95→\tPolicy             string `json:\"policy\"`      // \"delete\" or \"move\"\n    96→\tAge                int    `json:\"age\"`         // hours, default 24\n    97→\tTargetKind         string `json:\"target-kind\"` // \"file\" or \"s3\"\n    98→\tTargetPath         string `json:\"target-path\"`\n    99→\tTargetEndpoint     string `json:\"target-endpoint\"`\n   100→\tTargetBucket       string `json:\"target-bucket\"`\n   101→\tTargetAccessKey    string `json:\"target-access-key\"`\n   102→\tTargetSecretKey    string `json:\"target-secret-key\"`\n   103→\tTargetRegion       string `json:\"target-region\"`\n   104→\tTargetUsePathStyle bool   `json:\"target-use-path-style\"`\n   105→\tMaxFileSizeMB      int    `json:\"max-file-size-mb\"`\n   106→}\n   107→\n   108→type ResampleConfig struct {\n   109→\t// Minimum number of points to trigger resampling of data\n   110→\tMinimumPoints int `json:\"minimum-points\"`\n   111→\t// Array of resampling target resolutions, in seconds; Example: [600,300,60]\n   112→\tResolutions []int `json:\"resolutions\"`\n   113→\t// Trigger next zoom level at less than this many visible datapoints\n   114→\tTrigger int `json:\"trigger\"`\n   115→}\n   116→\n   117→type NATSConfig struct {\n   118→\tSubjectJobEvent  string `json:\"subject-job-event\"`\n   119→\tSubjectNodeState string `json:\"subject-node-state\"`\n   120→\tJobConcurrency   int    `json:\"job-concurrency\"`\n   121→\tNodeConcurrency  int    `json:\"node-concurrency\"`\n   122→}\n   123→\n   124→type IntRange struct {\n   125→\tFrom int `json:\"from\"`\n   126→\tTo   int `json:\"to\"`\n   127→}\n   128→\n   129→type TimeRange struct {\n   130→\tFrom  *time.Time `json:\"from\"`\n   131→\tTo    *time.Time `json:\"to\"`\n   132→\tRange string     `json:\"range,omitempty\"`\n   133→}\n   134→\n   135→type FilterRanges struct {\n   136→\tDuration  *IntRange  `json:\"duration\"`\n   137→\tNumNodes  *IntRange  `json:\"num-nodes\"`\n   138→\tStartTime *TimeRange `json:\"start-time\"`\n   139→}\n   140→\n   141→var Keys ProgramConfig = ProgramConfig{\n   142→\tAddr:                      \"localhost:8080\",\n   143→\tEmbedStaticFiles:          true,\n   144→\tDB:                        \"./var/job.db\",\n   145→\tSessionMaxAge:             \"168h\",\n   146→\tStopJobsExceedingWalltime: 0,\n   147→\tShortRunningJobsDuration:  5 * 60,\n   148→}\n   149→\n   150→func Init(mainConfig json.RawMessage) {\n   151→\tValidate(configSchema, mainConfig)\n   152→\tdec := json.NewDecoder(bytes.NewReader(mainConfig))\n   153→\tdec.DisallowUnknownFields()\n   154→\tif err := dec.Decode(&Keys); err != nil {\n   155→\t\tcclog.Abortf(\"Config Init: Could not decode config file '%s'.\\nError: %s\\n\", mainConfig, err.Error())\n   156→\t}\n   157→\n   158→\tif Keys.EnableResampling != nil && Keys.EnableResampling.MinimumPoints > 0 {\n   159→\t\tresampler.SetMinimumRequiredPoints(Keys.EnableResampling.MinimumPoints)\n   160→\t}\n   161→}\n   162→"}]},"uuid":"29ec25a5-faf6-48d3-bf88-d5ec12f32562","timestamp":"2026-03-16T11:10:20.531Z"},"type":"agent_progress","prompt":"","agentId":"a379ecc75bfa5944a"},"toolUseID":"agent_msg_01E84TDzstrH6QPmN3FXDjnM","parentToolUseID":"toolu_01RfjwLRZ45KeNLSLxTFWg82","uuid":"43ac9c78-0989-4092-8692-574d3c88980f","timestamp":"2026-03-16T11:10:20.700Z","userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"23bd02ee-e611-4488-a3d4-71ca93985943","version":"2.1.76","gitBranch":"hotfix","slug":"magical-sauteeing-gosling"}
+{"parentUuid":"43ac9c78-0989-4092-8692-574d3c88980f","isSidechain":false,"type":"progress","data":{"message":{"type":"assistant","timestamp":"2026-03-16T11:10:20.710Z","message":{"model":"claude-haiku-4-5-20251001","id":"msg_01RUbfjyCcdMYgNLiLbmyiuv","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_014X6RT2kQLRHLfLjgwmQXAN","name":"Read","input":{"file_path":"/Users/jan/prg/ClusterCockpit/cc-backend/internal/config/schema.go"},"caller":{"type":"direct"}}],"stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":282,"cache_creation_input_tokens":8106,"cache_read_input_tokens":17278,"cache_creation":{"ephemeral_5m_input_tokens":8106,"ephemeral_1h_input_tokens":0},"output_tokens":1,"service_tier":"standard","inference_geo":"not_available"},"context_management":null},"requestId":"req_011CZ6f2drZrU641go3FzusZ","uuid":"34f1217b-cb52-4464-90ec-f8582bc32a68"},"type":"agent_progress","prompt":"","agentId":"a379ecc75bfa5944a"},"toolUseID":"agent_msg_01E84TDzstrH6QPmN3FXDjnM","parentToolUseID":"toolu_01RfjwLRZ45KeNLSLxTFWg82","uuid":"9729de39-5d2a-4790-b2cf-a390a1cf63a2","timestamp":"2026-03-16T11:10:20.711Z","userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"23bd02ee-e611-4488-a3d4-71ca93985943","version":"2.1.76","gitBranch":"hotfix","slug":"magical-sauteeing-gosling"}
+{"parentUuid":"9729de39-5d2a-4790-b2cf-a390a1cf63a2","isSidechain":false,"type":"progress","data":{"message":{"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_014X6RT2kQLRHLfLjgwmQXAN","type":"tool_result","content":"     1→// Copyright (C) NHR@FAU, University Erlangen-Nuremberg.\n     2→// All rights reserved. This file is part of cc-backend.\n     3→// Use of this source code is governed by a MIT-style\n     4→// license that can be found in the LICENSE file.\n     5→\n     6→package config\n     7→\n     8→var configSchema = `\n     9→{\n    10→  \"type\": \"object\",\n    11→  \"properties\": {\n    12→    \"addr\": {\n    13→      \"description\": \"Address where the http (or https) server will listen on (for example: 'localhost:80').\",\n    14→      \"type\": \"string\"\n    15→    },\n    16→    \"api-allowed-ips\": {\n    17→      \"description\": \"Addresses from which secured API endpoints can be reached\",\n    18→      \"type\": \"array\",\n    19→      \"items\": {\n    20→        \"type\": \"string\"\n    21→      }\n    22→    },\n    23→    \"user\": {\n    24→      \"description\": \"Drop root permissions once .env was read and the port was taken. Only applicable if using privileged port.\",\n    25→      \"type\": \"string\"\n    26→    },\n    27→    \"group\": {\n    28→      \"description\": \"Drop root permissions once .env was read and the port was taken. Only applicable if using privileged port.\",\n    29→      \"type\": \"string\"\n    30→    },\n    31→    \"disable-authentication\": {\n    32→      \"description\": \"Disable authentication (for everything: API, Web-UI, ...).\",\n    33→      \"type\": \"boolean\"\n    34→    },\n    35→    \"embed-static-files\": {\n    36→      \"description\": \"If all files in web/frontend/public should be served from within the binary itself (they are embedded) or not.\",\n    37→      \"type\": \"boolean\"\n    38→    },\n    39→    \"static-files\": {\n    40→      \"description\": \"Folder where static assets can be found, if embed-static-files is false.\",\n    41→      \"type\": \"string\"\n    42→    },\n    43→    \"db\": {\n    44→      \"description\": \"Path to SQLite database file (e.g., './var/job.db')\",\n    45→      \"type\": \"string\"\n    46→    },\n    47→    \"enable-job-taggers\": {\n    48→      \"description\": \"Turn on automatic application and jobclass taggers\",\n    49→      \"type\": \"boolean\"\n    50→    },\n    51→    \"validate\": {\n    52→      \"description\": \"Validate all input json documents against json schema.\",\n    53→      \"type\": \"boolean\"\n    54→    },\n    55→    \"session-max-age\": {\n    56→      \"description\": \"Specifies for how long a session shall be valid  as a string parsable by time.ParseDuration(). If 0 or empty, the session/token does not expire!\",\n    57→      \"type\": \"string\"\n    58→    },\n    59→    \"https-cert-file\": {\n    60→      \"description\": \"Filepath to SSL certificate. If also https-key-file is set use HTTPS using those certificates.\",\n    61→      \"type\": \"string\"\n    62→    },\n    63→    \"https-key-file\": {\n    64→      \"description\": \"Filepath to SSL key file. If also https-cert-file is set use HTTPS using those certificates.\",\n    65→      \"type\": \"string\"\n    66→    },\n    67→    \"redirect-http-to\": {\n    68→      \"description\": \"If not the empty string and addr does not end in :80, redirect every request incoming at port 80 to that url.\",\n    69→      \"type\": \"string\"\n    70→    },\n    71→    \"stop-jobs-exceeding-walltime\": {\n    72→      \"description\": \"If not zero, automatically mark jobs as stopped running X seconds longer than their walltime. Only applies if walltime is set for job.\",\n    73→      \"type\": \"integer\"\n    74→    },\n    75→    \"short-running-jobs-duration\": {\n    76→      \"description\": \"Do not show running jobs shorter than X seconds.\",\n    77→      \"type\": \"integer\"\n    78→    },\n    79→    \"emission-constant\": {\n    80→      \"description\": \"Energy mix CO2 emission constant [g/kWh]. If set, displays estimated CO2 emission for jobs.\",\n    81→      \"type\": \"integer\"\n    82→    },\n    83→    \"machine-state-dir\": {\n    84→      \"description\": \"Where to store MachineState files.\",\n    85→      \"type\": \"string\"\n    86→    },\n    87→    \"systemd-unit\": {\n    88→      \"description\": \"Systemd unit name for log viewer (default: 'clustercockpit').\",\n    89→      \"type\": \"string\"\n    90→    },\n    91→    \"resampling\": {\n    92→      \"description\": \"Enable dynamic zoom in frontend metric plots.\",\n    93→      \"type\": \"object\",\n    94→      \"properties\": {\n    95→        \"minimum-points\": {\n    96→          \"description\": \"Minimum points to trigger resampling of time-series data.\",\n    97→          \"type\": \"integer\"\n    98→        },\n    99→        \"trigger\": {\n   100→          \"description\": \"Trigger next zoom level at less than this many visible datapoints.\",\n   101→          \"type\": \"integer\"\n   102→        },\n   103→        \"resolutions\": {\n   104→          \"description\": \"Array of resampling target resolutions, in seconds.\",\n   105→          \"type\": \"array\",\n   106→          \"items\": {\n   107→            \"type\": \"integer\"\n   108→          }\n   109→        }\n   110→      },\n   111→      \"required\": [\"trigger\", \"resolutions\"]\n   112→    },\n   113→    \"api-subjects\": {\n   114→      \"description\": \"NATS subjects configuration for subscribing to job and node events.\",\n   115→      \"type\": \"object\",\n   116→      \"properties\": {\n   117→        \"subject-job-event\": {\n   118→          \"description\": \"NATS subject for job events (start_job, stop_job)\",\n   119→          \"type\": \"string\"\n   120→        },\n   121→        \"subject-node-state\": {\n   122→          \"description\": \"NATS subject for node state updates\",\n   123→          \"type\": \"string\"\n   124→        }\n   125→      },\n   126→      \"required\": [\"subject-job-event\", \"subject-node-state\"]\n   127→    },\n   128→    \"nodestate-retention\": {\n   129→      \"description\": \"Node state retention configuration for cleaning up old node_state rows.\",\n   130→      \"type\": \"object\",\n   131→      \"properties\": {\n   132→        \"policy\": {\n   133→          \"description\": \"Retention policy: 'delete' to remove old rows, 'move' to archive to Parquet then delete.\",\n   134→          \"type\": \"string\",\n   135→          \"enum\": [\"delete\", \"move\"]\n   136→        },\n   137→        \"age\": {\n   138→          \"description\": \"Retention age in hours (default: 24).\",\n   139→          \"type\": \"integer\"\n   140→        },\n   141→        \"target-kind\": {\n   142→          \"description\": \"Target kind for parquet archiving: 'file' or 's3'.\",\n   143→          \"type\": \"string\",\n   144→          \"enum\": [\"file\", \"s3\"]\n   145→        },\n   146→        \"target-path\": {\n   147→          \"description\": \"Filesystem path for parquet file target.\",\n   148→          \"type\": \"string\"\n   149→        },\n   150→        \"target-endpoint\": {\n   151→          \"description\": \"S3 endpoint URL.\",\n   152→          \"type\": \"string\"\n   153→        },\n   154→        \"target-bucket\": {\n   155→          \"description\": \"S3 bucket name.\",\n   156→          \"type\": \"string\"\n   157→        },\n   158→        \"target-access-key\": {\n   159→          \"description\": \"S3 access key.\",\n   160→          \"type\": \"string\"\n   161→        },\n   162→        \"target-secret-key\": {\n   163→          \"description\": \"S3 secret key.\",\n   164→          \"type\": \"string\"\n   165→        },\n   166→        \"target-region\": {\n   167→          \"description\": \"S3 region.\",\n   168→          \"type\": \"string\"\n   169→        },\n   170→        \"target-use-path-style\": {\n   171→          \"description\": \"Use path-style S3 addressing.\",\n   172→          \"type\": \"boolean\"\n   173→        },\n   174→        \"max-file-size-mb\": {\n   175→          \"description\": \"Maximum parquet file size in MB (default: 128).\",\n   176→          \"type\": \"integer\"\n   177→        }\n   178→      },\n   179→      \"required\": [\"policy\"]\n   180→    },\n   181→    \"db-config\": {\n   182→      \"description\": \"SQLite database tuning configuration.\",\n   183→      \"type\": \"object\",\n   184→      \"properties\": {\n   185→        \"cache-size-mb\": {\n   186→          \"description\": \"SQLite page cache size per connection in MB (default: 2048).\",\n   187→          \"type\": \"integer\"\n   188→        },\n   189→        \"soft-heap-limit-mb\": {\n   190→          \"description\": \"Process-wide SQLite soft heap limit in MB (default: 16384).\",\n   191→          \"type\": \"integer\"\n   192→        },\n   193→        \"max-open-connections\": {\n   194→          \"description\": \"Maximum number of open database connections (default: 4).\",\n   195→          \"type\": \"integer\"\n   196→        },\n   197→        \"max-idle-connections\": {\n   198→          \"description\": \"Maximum number of idle database connections (default: 4).\",\n   199→          \"type\": \"integer\"\n   200→        },\n   201→        \"max-idle-time-minutes\": {\n   202→          \"description\": \"Maximum idle time for a connection in minutes (default: 10).\",\n   203→          \"type\": \"integer\"\n   204→        },\n   205→        \"busy-timeout-ms\": {\n   206→          \"description\": \"SQLite busy timeout in milliseconds. When a write is blocked, SQLite retries with backoff for up to this duration before returning SQLITE_BUSY (default: 60000).\",\n   207→          \"type\": \"integer\"\n   208→        }\n   209→      }\n   210→    }\n   211→  }\n   212→}`\n   213→"}]},"uuid":"af7b093f-3cdb-40fb-b421-e191b239203c","timestamp":"2026-03-16T11:10:20.717Z"},"type":"agent_progress","prompt":"","agentId":"a379ecc75bfa5944a"},"toolUseID":"agent_msg_01E84TDzstrH6QPmN3FXDjnM","parentToolUseID":"toolu_01RfjwLRZ45KeNLSLxTFWg82","uuid":"916d586d-add4-402f-86cc-666b1f6cc9e0","timestamp":"2026-03-16T11:10:20.911Z","userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"23bd02ee-e611-4488-a3d4-71ca93985943","version":"2.1.76","gitBranch":"hotfix","slug":"magical-sauteeing-gosling"}
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+{"parentUuid":"0b1f751f-1d25-483f-a56e-ec5e2d38c066","isSidechain":false,"type":"progress","data":{"message":{"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01VimY8C691Syu9pkAZwZvMx","type":"tool_result","content":"     1→// Copyright (C) NHR@FAU, University Erlangen-Nuremberg.\n     2→// All rights reserved. This file is part of cc-backend.\n     3→// Use of this source code is governed by a MIT-style\n     4→// license that can be found in the LICENSE file.\n     5→\n     6→package api\n     7→\n     8→import (\n     9→\t\"database/sql\"\n    10→\t\"encoding/json\"\n    11→\t\"maps\"\n    12→\t\"strings\"\n    13→\t\"sync\"\n    14→\t\"time\"\n    15→\n    16→\t\"github.com/ClusterCockpit/cc-backend/internal/archiver\"\n    17→\t\"github.com/ClusterCockpit/cc-backend/internal/config\"\n    18→\t\"github.com/ClusterCockpit/cc-backend/internal/importer\"\n    19→\t\"github.com/ClusterCockpit/cc-backend/internal/metricdispatch\"\n    20→\t\"github.com/ClusterCockpit/cc-backend/internal/repository\"\n    21→\t\"github.com/ClusterCockpit/cc-backend/pkg/archive\"\n    22→\t\"github.com/ClusterCockpit/cc-backend/pkg/metricstore\"\n    23→\tcclog \"github.com/ClusterCockpit/cc-lib/v2/ccLogger\"\n    24→\tlp \"github.com/ClusterCockpit/cc-lib/v2/ccMessage\"\n    25→\t\"github.com/ClusterCockpit/cc-lib/v2/nats\"\n    26→\t\"github.com/ClusterCockpit/cc-lib/v2/receivers\"\n    27→\t\"github.com/ClusterCockpit/cc-lib/v2/schema\"\n    28→\tinflux \"github.com/ClusterCockpit/cc-line-protocol/v2/lineprotocol\"\n    29→)\n    30→\n    31→// natsMessage wraps a raw NATS message with its subject for channel-based processing.\n    32→type natsMessage struct {\n    33→\tsubject string\n    34→\tdata    []byte\n    35→}\n    36→\n    37→// NatsAPI provides NATS subscription-based handlers for Job and Node operations.\n    38→// It mirrors the functionality of the REST API but uses NATS messaging with\n    39→// InfluxDB line protocol as the message format.\n    40→//\n    41→// # Message Format\n    42→//\n    43→// All NATS messages use InfluxDB line protocol format (https://docs.influxdata.com/influxdb/v2.0/reference/syntax/line-protocol/)\n    44→// with the following structure:\n    45→//\n    46→//\tmeasurement,tag1=value1,tag2=value2 field1=value1,field2=value2 timestamp\n    47→//\n    48→// # Job Events\n    49→//\n    50→// Job start/stop events use the \"job\" measurement with a \"function\" tag to distinguish operations:\n    51→//\n    52→//\tjob,function=start_job event=\"{...JSON payload...}\" <timestamp>\n    53→//\tjob,function=stop_job event=\"{...JSON payload...}\" <timestamp>\n    54→//\n    55→// The JSON payload in the \"event\" field follows the schema.Job or StopJobAPIRequest structure.\n    56→//\n    57→// Example job start message:\n    58→//\n    59→//\tjob,function=start_job event=\"{\\\"jobId\\\":1001,\\\"user\\\":\\\"testuser\\\",\\\"cluster\\\":\\\"testcluster\\\",...}\" 1234567890000000000\n    60→//\n    61→// # Node State Events\n    62→//\n    63→// Node state updates use the \"nodestate\" measurement with cluster information:\n    64→//\n    65→//\tnodestate event=\"{...JSON payload...}\" <timestamp>\n    66→//\n    67→// The JSON payload follows the UpdateNodeStatesRequest structure.\n    68→//\n    69→// Example node state message:\n    70→//\n    71→//\tnodestate event=\"{\\\"cluster\\\":\\\"testcluster\\\",\\\"nodes\\\":[{\\\"hostname\\\":\\\"node01\\\",\\\"states\\\":[\\\"idle\\\"]}]}\" 1234567890000000000\n    72→type NatsAPI struct {\n    73→\tJobRepository *repository.JobRepository\n    74→\t// RepositoryMutex protects job creation operations from race conditions\n    75→\t// when checking for duplicate jobs during startJob calls.\n    76→\tRepositoryMutex sync.Mutex\n    77→\t// jobCh receives job event messages for processing by worker goroutines.\n    78→\tjobCh chan natsMessage\n    79→\t// nodeCh receives node state messages for processing by worker goroutines.\n    80→\tnodeCh chan natsMessage\n    81→}\n    82→\n    83→// NewNatsAPI creates a new NatsAPI instance with channel-based worker pools.\n    84→// Concurrency is configured via NATSConfig (defaults: JobConcurrency=8, NodeConcurrency=2).\n    85→func NewNatsAPI() *NatsAPI {\n    86→\tjobConc := 8\n    87→\tnodeConc := 2\n    88→\n    89→\tif s := config.Keys.APISubjects; s != nil {\n    90→\t\tif s.JobConcurrency > 0 {\n    91→\t\t\tjobConc = s.JobConcurrency\n    92→\t\t}\n    93→\t\tif s.NodeConcurrency > 0 {\n    94→\t\t\tnodeConc = s.NodeConcurrency\n    95→\t\t}\n    96→\t}\n    97→\n    98→\tapi := &NatsAPI{\n    99→\t\tJobRepository: repository.GetJobRepository(),\n   100→\t\tjobCh:         make(chan natsMessage, jobConc),\n   101→\t\tnodeCh:        make(chan natsMessage, nodeConc),\n   102→\t}\n   103→\n   104→\t// Start worker goroutines\n   105→\tfor range jobConc {\n   106→\t\tgo api.jobWorker()\n   107→\t}\n   108→\tfor range nodeConc {\n   109→\t\tgo api.nodeWorker()\n   110→\t}\n   111→\n   112→\treturn api\n   113→}\n   114→\n   115→// jobWorker processes job event messages from the job channel.\n   116→func (api *NatsAPI) jobWorker() {\n   117→\tfor msg := range api.jobCh {\n   118→\t\tapi.handleJobEvent(msg.subject, msg.data)\n   119→\t}\n   120→}\n   121→\n   122→// nodeWorker processes node state messages from the node channel.\n   123→func (api *NatsAPI) nodeWorker() {\n   124→\tfor msg := range api.nodeCh {\n   125→\t\tapi.handleNodeState(msg.subject, msg.data)\n   126→\t}\n   127→}\n   128→\n   129→// StartSubscriptions registers all NATS subscriptions for Job and Node APIs.\n   130→// Messages are delivered to buffered channels and processed by worker goroutines.\n   131→// Returns an error if the NATS client is not available or subscription fails.\n   132→func (api *NatsAPI) StartSubscriptions() error {\n   133→\tclient := nats.GetClient()\n   134→\tif client == nil {\n   135→\t\tcclog.Warn(\"NATS client not available, skipping API subscriptions\")\n   136→\t\treturn nil\n   137→\t}\n   138→\n   139→\tif config.Keys.APISubjects != nil {\n   140→\t\ts := config.Keys.APISubjects\n   141→\n   142→\t\tif err := client.Subscribe(s.SubjectJobEvent, func(subject string, data []byte) {\n   143→\t\t\tapi.jobCh <- natsMessage{subject: subject, data: data}\n   144→\t\t}); err != nil {\n   145→\t\t\treturn err\n   146→\t\t}\n   147→\n   148→\t\tif err := client.Subscribe(s.SubjectNodeState, func(subject string, data []byte) {\n   149→\t\t\tapi.nodeCh <- natsMessage{subject: subject, data: data}\n   150→\t\t}); err != nil {\n   151→\t\t\treturn err\n   152→\t\t}\n   153→\n   154→\t\tcclog.Info(\"NATS API subscriptions started\")\n   155→\t}\n   156→\treturn nil\n   157→}\n   158→\n   159→// processJobEvent routes job event messages to the appropriate handler based on the \"function\" tag.\n   160→// Validates that required tags and fields are present before processing.\n   161→func (api *NatsAPI) processJobEvent(msg lp.CCMessage) {\n   162→\tfunction, ok := msg.GetTag(\"function\")\n   163→\tif !ok {\n   164→\t\tcclog.Errorf(\"Job event is missing required tag 'function': measurement=%s\", msg.Name())\n   165→\t\treturn\n   166→\t}\n   167→\n   168→\tswitch function {\n   169→\tcase \"start_job\":\n   170→\t\tv, ok := msg.GetEventValue()\n   171→\t\tif !ok {\n   172→\t\t\tcclog.Errorf(\"Job start event is missing event field with JSON payload\")\n   173→\t\t\treturn\n   174→\t\t}\n   175→\t\tapi.handleStartJob(v)\n   176→\n   177→\tcase \"stop_job\":\n   178→\t\tv, ok := msg.GetEventValue()\n   179→\t\tif !ok {\n   180→\t\t\tcclog.Errorf(\"Job stop event is missing event field with JSON payload\")\n   181→\t\t\treturn\n   182→\t\t}\n   183→\t\tapi.handleStopJob(v)\n   184→\n   185→\tdefault:\n   186→\t\tcclog.Warnf(\"Unknown job event function '%s', expected 'start_job' or 'stop_job'\", function)\n   187→\t}\n   188→}\n   189→\n   190→// handleJobEvent processes job-related messages received via NATS using InfluxDB line protocol.\n   191→// The message must be in line protocol format with measurement=\"job\" and include:\n   192→//   - tag \"function\" with value \"start_job\" or \"stop_job\"\n   193→//   - field \"event\" containing JSON payload (schema.Job or StopJobAPIRequest)\n   194→//\n   195→// Example: job,function=start_job event=\"{\\\"jobId\\\":1001,...}\" 1234567890000000000\n   196→func (api *NatsAPI) handleJobEvent(subject string, data []byte) {\n   197→\tif len(data) == 0 {\n   198→\t\tcclog.Warnf(\"NATS %s: received empty message\", subject)\n   199→\t\treturn\n   200→\t}\n   201→\n   202→\td := influx.NewDecoderWithBytes(data)\n   203→\n   204→\tfor d.Next() {\n   205→\t\tm, err := receivers.DecodeInfluxMessage(d)\n   206→\t\tif err != nil {\n   207→\t\t\tcclog.Errorf(\"NATS %s: failed to decode InfluxDB line protocol message: %v\", subject, err)\n   208→\t\t\treturn\n   209→\t\t}\n   210→\n   211→\t\tif !m.IsEvent() {\n   212→\t\t\tcclog.Debugf(\"NATS %s: received non-event message, skipping\", subject)\n   213→\t\t\tcontinue\n   214→\t\t}\n   215→\n   216→\t\tif m.Name() == \"job\" {\n   217→\t\t\tapi.processJobEvent(m)\n   218→\t\t} else {\n   219→\t\t\tcclog.Debugf(\"NATS %s: unexpected measurement name '%s', expected 'job'\", subject, m.Name())\n   220→\t\t}\n   221→\t}\n   222→}\n   223→\n   224→// handleStartJob processes job start messages received via NATS.\n   225→// The payload parameter contains JSON following the schema.Job structure.\n   226→// Jobs are validated, checked for duplicates, and inserted into the database.\n   227→func (api *NatsAPI) handleStartJob(payload string) {\n   228→\tif payload == \"\" {\n   229→\t\tcclog.Error(\"NATS start job: payload is empty\")\n   230→\t\treturn\n   231→\t}\n   232→\treq := schema.Job{\n   233→\t\tShared:           \"none\",\n   234→\t\tMonitoringStatus: schema.MonitoringStatusRunningOrArchiving,\n   235→\t}\n   236→\n   237→\tdec := json.NewDecoder(strings.NewReader(payload))\n   238→\tdec.DisallowUnknownFields()\n   239→\tif err := dec.Decode(&req); err != nil {\n   240→\t\tcclog.Errorf(\"NATS start job: parsing request failed: %v\", err)\n   241→\t\treturn\n   242→\t}\n   243→\n   244→\tcclog.Debugf(\"NATS start job: %s\", req.GoString())\n   245→\treq.State = schema.JobStateRunning\n   246→\n   247→\tif err := importer.SanityChecks(&req); err != nil {\n   248→\t\tcclog.Errorf(\"NATS start job: sanity check failed: %v\", err)\n   249→\t\treturn\n   250→\t}\n   251→\n   252→\tvar unlockOnce sync.Once\n   253→\tapi.RepositoryMutex.Lock()\n   254→\tdefer unlockOnce.Do(api.RepositoryMutex.Unlock)\n   255→\n   256→\tjobs, err := api.JobRepository.FindAll(&req.JobID, &req.Cluster, nil)\n   257→\tif err != nil && err != sql.ErrNoRows {\n   258→\t\tcclog.Errorf(\"NATS start job: checking for duplicate failed: %v\", err)\n   259→\t\treturn\n   260→\t}\n   261→\tif err == nil {\n   262→\t\tfor _, job := range jobs {\n   263→\t\t\tif (req.StartTime - job.StartTime) < secondsPerDay {\n   264→\t\t\t\tcclog.Errorf(\"NATS start job: job with jobId %d, cluster %s already exists (dbid: %d)\",\n   265→\t\t\t\t\treq.JobID, req.Cluster, job.ID)\n   266→\t\t\t\treturn\n   267→\t\t\t}\n   268→\t\t}\n   269→\t}\n   270→\n   271→\t// When tags are present, insert directly into the job table so that the\n   272→\t// returned ID can be used with AddTagOrCreate (which queries the job table).\n   273→\tvar id int64\n   274→\tif len(req.Tags) > 0 {\n   275→\t\tid, err = api.JobRepository.StartDirect(&req)\n   276→\t} else {\n   277→\t\tid, err = api.JobRepository.Start(&req)\n   278→\t}\n   279→\tif err != nil {\n   280→\t\tcclog.Errorf(\"NATS start job: insert into database failed: %v\", err)\n   281→\t\treturn\n   282→\t}\n   283→\tunlockOnce.Do(api.RepositoryMutex.Unlock)\n   284→\n   285→\tfor _, tag := range req.Tags {\n   286→\t\tif _, err := api.JobRepository.AddTagOrCreate(nil, id, tag.Type, tag.Name, tag.Scope); err != nil {\n   287→\t\t\tcclog.Errorf(\"NATS start job: adding tag to new job %d failed: %v\", id, err)\n   288→\t\t\treturn\n   289→\t\t}\n   290→\t}\n   291→\n   292→\tcclog.Infof(\"NATS: new job (id: %d): cluster=%s, jobId=%d, user=%s, startTime=%d\",\n   293→\t\tid, req.Cluster, req.JobID, req.User, req.StartTime)\n   294→}\n   295→\n   296→// handleStopJob processes job stop messages received via NATS.\n   297→// The payload parameter contains JSON following the StopJobAPIRequest structure.\n   298→// The job is marked as stopped in the database and archiving is triggered if monitoring is enabled.\n   299→func (api *NatsAPI) handleStopJob(payload string) {\n   300→\tif payload == \"\" {\n   301→\t\tcclog.Error(\"NATS stop job: payload is empty\")\n   302→\t\treturn\n   303→\t}\n   304→\tvar req StopJobAPIRequest\n   305→\n   306→\tdec := json.NewDecoder(strings.NewReader(payload))\n   307→\tdec.DisallowUnknownFields()\n   308→\tif err := dec.Decode(&req); err != nil {\n   309→\t\tcclog.Errorf(\"NATS job stop: parsing request failed: %v\", err)\n   310→\t\treturn\n   311→\t}\n   312→\n   313→\tif req.JobID == nil {\n   314→\t\tcclog.Errorf(\"NATS job stop: the field 'jobId' is required\")\n   315→\t\treturn\n   316→\t}\n   317→\n   318→\tisCached := false\n   319→\tjob, err := api.JobRepository.FindCached(req.JobID, req.Cluster, req.StartTime)\n   320→\tif err != nil {\n   321→\t\t// Not in cache, try main job table\n   322→\t\tjob, err = api.JobRepository.Find(req.JobID, req.Cluster, req.StartTime)\n   323→\t\tif err != nil {\n   324→\t\t\tcclog.Errorf(\"NATS job stop: finding job failed: %v\", err)\n   325→\t\t\treturn\n   326→\t\t}\n   327→\t} else {\n   328→\t\tisCached = true\n   329→\t}\n   330→\n   331→\tif job.State != schema.JobStateRunning {\n   332→\t\tcclog.Errorf(\"NATS job stop: jobId %d (id %d) on %s: job has already been stopped (state is: %s)\",\n   333→\t\t\tjob.JobID, job.ID, job.Cluster, job.State)\n   334→\t\treturn\n   335→\t}\n   336→\n   337→\tif job.StartTime > req.StopTime {\n   338→\t\tcclog.Errorf(\"NATS job stop: jobId %d (id %d) on %s: stopTime %d must be >= startTime %d\",\n   339→\t\t\tjob.JobID, job.ID, job.Cluster, req.StopTime, job.StartTime)\n   340→\t\treturn\n   341→\t}\n   342→\n   343→\tif req.State != \"\" && !req.State.Valid() {\n   344→\t\tcclog.Errorf(\"NATS job stop: jobId %d (id %d) on %s: invalid job state: %#v\",\n   345→\t\t\tjob.JobID, job.ID, job.Cluster, req.State)\n   346→\t\treturn\n   347→\t} else if req.State == \"\" {\n   348→\t\treq.State = schema.JobStateCompleted\n   349→\t}\n   350→\n   351→\tjob.Duration = int32(req.StopTime - job.StartTime)\n   352→\tjob.State = req.State\n   353→\tapi.JobRepository.Mutex.Lock()\n   354→\tdefer api.JobRepository.Mutex.Unlock()\n   355→\n   356→\t// If the job is still in job_cache, transfer it to the job table first\n   357→\tif isCached {\n   358→\t\tnewID, err := api.JobRepository.TransferCachedJobToMain(*job.ID)\n   359→\t\tif err != nil {\n   360→\t\t\tcclog.Errorf(\"NATS job stop: jobId %d (id %d) on %s: transferring cached job failed: %v\",\n   361→\t\t\t\tjob.JobID, *job.ID, job.Cluster, err)\n   362→\t\t\treturn\n   363→\t\t}\n   364→\t\tcclog.Infof(\"NATS: transferred cached job to main table: old id %d -> new id %d (jobId=%d)\", *job.ID, newID, job.JobID)\n   365→\t\tjob.ID = &newID\n   366→\t}\n   367→\n   368→\tif err := api.JobRepository.Stop(*job.ID, job.Duration, job.State, job.MonitoringStatus); err != nil {\n   369→\t\tcclog.Errorf(\"NATS job stop: jobId %d (id %d) on %s: marking job as '%s' failed: %v\",\n   370→\t\t\tjob.JobID, *job.ID, job.Cluster, job.State, err)\n   371→\t\treturn\n   372→\t}\n   373→\n   374→\tcclog.Infof(\"NATS: archiving job (dbid: %d): cluster=%s, jobId=%d, user=%s, startTime=%d, duration=%d, state=%s\",\n   375→\t\t*job.ID, job.Cluster, job.JobID, job.User, job.StartTime, job.Duration, job.State)\n   376→\n   377→\tif job.MonitoringStatus == schema.MonitoringStatusDisabled {\n   378→\t\treturn\n   379→\t}\n   380→\n   381→\tarchiver.TriggerArchiving(job)\n   382→}\n   383→\n   384→// processNodestateEvent extracts and processes node state data from the InfluxDB message.\n   385→// Updates node states in the repository for all nodes in the payload.\n   386→func (api *NatsAPI) processNodestateEvent(msg lp.CCMessage) {\n   387→\tv, ok := msg.GetEventValue()\n   388→\tif !ok {\n   389→\t\tcclog.Errorf(\"Nodestate event is missing event field with JSON payload\")\n   390→\t\treturn\n   391→\t}\n   392→\n   393→\tvar req UpdateNodeStatesRequest\n   394→\n   395→\tdec := json.NewDecoder(strings.NewReader(v))\n   396→\tdec.DisallowUnknownFields()\n   397→\tif err := dec.Decode(&req); err != nil {\n   398→\t\tcclog.Errorf(\"NATS nodestate: parsing request failed: %v\", err)\n   399→\t\treturn\n   400→\t}\n   401→\n   402→\trepo := repository.GetNodeRepository()\n   403→\trequestReceived := time.Now().Unix()\n   404→\n   405→\t// Build nodeList per subcluster for health check\n   406→\tm := make(map[string][]string)\n   407→\tmetricNames := make(map[string][]string)\n   408→\thealthResults := make(map[string]metricstore.HealthCheckResult)\n   409→\n   410→\tfor _, node := range req.Nodes {\n   411→\t\tif sc, err := archive.GetSubClusterByNode(req.Cluster, node.Hostname); err == nil {\n   412→\t\t\tm[sc] = append(m[sc], node.Hostname)\n   413→\t\t}\n   414→\t}\n   415→\n   416→\tfor sc := range m {\n   417→\t\tif sc != \"\" {\n   418→\t\t\tmetricList := archive.GetMetricConfigSubCluster(req.Cluster, sc)\n   419→\t\t\tmetricNames[sc] = metricListToNames(metricList)\n   420→\t\t}\n   421→\t}\n   422→\n   423→\t// Perform health check against metric store\n   424→\thealthRepo, err := metricdispatch.GetHealthCheckRepo(req.Cluster)\n   425→\tif err != nil {\n   426→\t\tcclog.Warnf(\"NATS nodestate: no metric store for cluster %s, skipping health check: %v\", req.Cluster, err)\n   427→\t} else {\n   428→\t\tfor sc, nl := range m {\n   429→\t\t\tif sc != \"\" {\n   430→\t\t\t\tif results, err := healthRepo.HealthCheck(req.Cluster, nl, metricNames[sc]); err == nil {\n   431→\t\t\t\t\tmaps.Copy(healthResults, results)\n   432→\t\t\t\t}\n   433→\t\t\t}\n   434→\t\t}\n   435→\t}\n   436→\n   437→\tupdates := make([]repository.NodeStateUpdate, 0, len(req.Nodes))\n   438→\tfor _, node := range req.Nodes {\n   439→\t\tstate := determineState(node.States)\n   440→\t\thealthState := schema.MonitoringStateFailed\n   441→\t\tvar healthMetrics string\n   442→\t\tif result, ok := healthResults[node.Hostname]; ok {\n   443→\t\t\thealthState = result.State\n   444→\t\t\thealthMetrics = result.HealthMetrics\n   445→\t\t}\n   446→\t\tnodeState := schema.NodeStateDB{\n   447→\t\t\tTimeStamp:       requestReceived,\n   448→\t\t\tNodeState:       state,\n   449→\t\t\tCpusAllocated:   node.CpusAllocated,\n   450→\t\t\tMemoryAllocated: node.MemoryAllocated,\n   451→\t\t\tGpusAllocated:   node.GpusAllocated,\n   452→\t\t\tHealthState:     healthState,\n   453→\t\t\tHealthMetrics:   healthMetrics,\n   454→\t\t\tJobsRunning:     node.JobsRunning,\n   455→\t\t}\n   456→\t\tupdates = append(updates, repository.NodeStateUpdate{\n   457→\t\t\tHostname:  node.Hostname,\n   458→\t\t\tCluster:   req.Cluster,\n   459→\t\t\tNodeState: &nodeState,\n   460→\t\t})\n   461→\t}\n   462→\n   463→\tif err := repo.BatchUpdateNodeStates(updates); err != nil {\n   464→\t\tcclog.Errorf(\"NATS nodestate: batch update for cluster %s failed: %v\", req.Cluster, err)\n   465→\t}\n   466→\n   467→\tcclog.Debugf(\"NATS nodestate: updated %d node states for cluster %s\", len(req.Nodes), req.Cluster)\n   468→}\n   469→\n   470→// handleNodeState processes node state update messages received via NATS using InfluxDB line protocol.\n   471→// The message must be in line protocol format with measurement=\"nodestate\" and include:\n   472→//   - field \"event\" containing JSON payload (UpdateNodeStatesRequest)\n   473→//\n   474→// Example: nodestate event=\"{\\\"cluster\\\":\\\"testcluster\\\",\\\"nodes\\\":[...]}\" 1234567890000000000\n   475→func (api *NatsAPI) handleNodeState(subject string, data []byte) {\n   476→\tif len(data) == 0 {\n   477→\t\tcclog.Warnf(\"NATS %s: received empty message\", subject)\n   478→\t\treturn\n   479→\t}\n   480→\n   481→\td := influx.NewDecoderWithBytes(data)\n   482→\n   483→\tfor d.Next() {\n   484→\t\tm, err := receivers.DecodeInfluxMessage(d)\n   485→\t\tif err != nil {\n   486→\t\t\tcclog.Errorf(\"NATS %s: failed to decode InfluxDB line protocol message: %v\", subject, err)\n   487→\t\t\treturn\n   488→\t\t}\n   489→\n   490→\t\tif !m.IsEvent() {\n   491→\t\t\tcclog.Warnf(\"NATS %s: received non-event message, skipping\", subject)\n   492→\t\t\tcontinue\n   493→\t\t}\n   494→\n   495→\t\tif m.Name() == \"nodestate\" {\n   496→\t\t\tapi.processNodestateEvent(m)\n   497→\t\t} else {\n   498→\t\t\tcclog.Warnf(\"NATS %s: unexpected measurement name '%s', expected 'nodestate'\", subject, m.Name())\n   499→\t\t}\n   500→\t}\n   501→}\n   502→"}]},"uuid":"c30ef850-24cc-4a87-87fc-048882e4a7e3","timestamp":"2026-03-16T11:10:20.939Z"},"type":"agent_progress","prompt":"","agentId":"a379ecc75bfa5944a"},"toolUseID":"agent_msg_01E84TDzstrH6QPmN3FXDjnM","parentToolUseID":"toolu_01RfjwLRZ45KeNLSLxTFWg82","uuid":"83b36bfd-447d-4f3b-b0f6-1a7b57537db9","timestamp":"2026-03-16T11:10:21.051Z","userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"23bd02ee-e611-4488-a3d4-71ca93985943","version":"2.1.76","gitBranch":"hotfix","slug":"magical-sauteeing-gosling"}
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+{"parentUuid":"f88d9640-a4f1-4b55-b648-7730f8659ee1","isSidechain":false,"type":"progress","data":{"message":{"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01UE7ZjZSu2PDaFFsrkXBqX7","type":"tool_result","content":"     1→# CLAUDE.md\n     2→\n     3→This file provides guidance to Claude Code (claude.ai/code) when working with\n     4→code in this repository.\n     5→\n     6→## Project Overview\n     7→\n     8→ClusterCockpit is a job-specific performance monitoring framework for HPC\n     9→clusters. This is a Golang backend that provides REST and GraphQL APIs, serves a\n    10→Svelte-based frontend, and manages job archives and metric data from various\n    11→time-series databases.\n    12→\n    13→## Build and Development Commands\n    14→\n    15→### Building\n    16→\n    17→```bash\n    18→# Build everything (frontend + backend)\n    19→make\n    20→\n    21→# Build only the frontend\n    22→make frontend\n    23→\n    24→# Build only the backend (requires frontend to be built first)\n    25→go build -ldflags='-s -X main.date=$(date +\"%Y-%m-%d:T%H:%M:%S\") -X main.version=1.5.0 -X main.commit=$(git rev-parse --short HEAD)' ./cmd/cc-backend\n    26→```\n    27→\n    28→### Testing\n    29→\n    30→```bash\n    31→# Run all tests\n    32→make test\n    33→\n    34→# Run tests with verbose output\n    35→go test -v ./...\n    36→\n    37→# Run tests for a specific package\n    38→go test ./internal/repository\n    39→```\n    40→\n    41→### Code Generation\n    42→\n    43→```bash\n    44→# Regenerate GraphQL schema and resolvers (after modifying api/schema.graphqls)\n    45→make graphql\n    46→\n    47→# Regenerate Swagger/OpenAPI docs (after modifying API comments)\n    48→make swagger\n    49→```\n    50→\n    51→### Frontend Development\n    52→\n    53→```bash\n    54→cd web/frontend\n    55→\n    56→# Install dependencies\n    57→npm install\n    58→\n    59→# Build for production\n    60→npm run build\n    61→\n    62→# Development mode with watch\n    63→npm run dev\n    64→```\n    65→\n    66→### Running\n    67→\n    68→```bash\n    69→# Initialize database and create admin user\n    70→./cc-backend -init-db -add-user demo:admin:demo\n    71→\n    72→# Start server in development mode (enables GraphQL Playground and Swagger UI)\n    73→./cc-backend -server -dev -loglevel info\n    74→\n    75→# Start demo with sample data\n    76→./startDemo.sh\n    77→```\n    78→\n    79→## Architecture\n    80→\n    81→### Backend Structure\n    82→\n    83→The backend follows a layered architecture with clear separation of concerns:\n    84→\n    85→- **cmd/cc-backend**: Entry point, orchestrates initialization of all subsystems\n    86→- **internal/repository**: Data access layer using repository pattern\n    87→  - Abstracts database operations (SQLite3 only)\n    88→  - Implements LRU caching for performance\n    89→  - Provides repositories for Job, User, Node, and Tag entities\n    90→  - Transaction support for batch operations\n    91→- **internal/api**: REST API endpoints (Swagger/OpenAPI documented)\n    92→- **internal/graph**: GraphQL API (uses gqlgen)\n    93→  - Schema in `api/schema.graphqls`\n    94→  - Generated code in `internal/graph/generated/`\n    95→  - Resolvers in `internal/graph/schema.resolvers.go`\n    96→- **internal/auth**: Authentication layer\n    97→  - Supports local accounts, LDAP, OIDC, and JWT tokens\n    98→  - Implements rate limiting for login attempts\n    99→- **pkg/metricstore**: Metric store with data loading API\n   100→  - In-memory metric storage with checkpointing\n   101→  - Query API for loading job metric data\n   102→- **internal/archiver**: Job archiving to file-based archive\n   103→- **internal/api/nats.go**: NATS-based API for job and node operations\n   104→  - Subscribes to NATS subjects for job events (start/stop)\n   105→  - Handles node state updates via NATS\n   106→  - Uses InfluxDB line protocol message format\n   107→- **pkg/archive**: Job archive backend implementations\n   108→  - File system backend (default)\n   109→  - S3 backend\n   110→  - SQLite backend (experimental)\n   111→  - **parquet** sub-package: Parquet format support (schema, reader, writer, conversion)\n   112→- **internal/metricstoreclient**: Client for cc-metric-store queries\n   113→\n   114→### Frontend Structure\n   115→\n   116→- **web/frontend**: Svelte 5 application\n   117→  - Uses Rollup for building\n   118→  - Components organized by feature (analysis, job, user, etc.)\n   119→  - GraphQL client using @urql/svelte\n   120→  - Bootstrap 5 + SvelteStrap for UI\n   121→  - uPlot for time-series visualization\n   122→- **web/templates**: Server-side Go templates\n   123→\n   124→### Key Concepts\n   125→\n   126→**Job Archive**: Completed jobs are stored in a file-based archive following the\n   127→[ClusterCockpit job-archive\n   128→specification](https://github.com/ClusterCockpit/cc-specifications/tree/master/job-archive).\n   129→Each job has a `meta.json` file with metadata and metric data files.\n   130→\n   131→**Metric Data Repositories**: Time-series metric data is stored separately from\n   132→job metadata. The system supports multiple backends (cc-metric-store is\n   133→recommended). Configuration is per-cluster in `config.json`.\n   134→\n   135→**Authentication Flow**:\n   136→\n   137→1. Multiple authenticators can be configured (local, LDAP, OIDC, JWT)\n   138→2. Each authenticator's `CanLogin` method is called to determine if it should handle the request\n   139→3. The first authenticator that returns true performs the actual `Login`\n   140→4. JWT tokens are used for API authentication\n   141→\n   142→**Database Migrations**: SQL migrations in `internal/repository/migrations/sqlite3/` are\n   143→applied automatically on startup. Version tracking in `version` table.\n   144→\n   145→**Scopes**: Metrics can be collected at different scopes:\n   146→\n   147→- Node scope (always available)\n   148→- Core scope (for jobs with ≤8 nodes)\n   149→- Accelerator scope (for GPU/accelerator metrics)\n   150→\n   151→## Configuration\n   152→\n   153→- **config.json**: Main configuration (clusters, metric repositories, archive settings)\n   154→  - `main.apiSubjects`: NATS subject configuration (optional)\n   155→    - `subjectJobEvent`: Subject for job start/stop events (e.g., \"cc.job.event\")\n   156→    - `subjectNodeState`: Subject for node state updates (e.g., \"cc.node.state\")\n   157→  - `nats`: NATS client connection configuration (optional)\n   158→    - `address`: NATS server address (e.g., \"nats://localhost:4222\")\n   159→    - `username`: Authentication username (optional)\n   160→    - `password`: Authentication password (optional)\n   161→    - `creds-file-path`: Path to NATS credentials file (optional)\n   162→- **.env**: Environment variables (secrets like JWT keys)\n   163→  - Copy from `configs/env-template.txt`\n   164→  - NEVER commit this file\n   165→- **cluster.json**: Cluster topology and metric definitions (loaded from archive or config)\n   166→\n   167→## Database\n   168→\n   169→- Default: SQLite 3 (`./var/job.db`)\n   170→- Connection managed by `internal/repository`\n   171→- Schema version in `internal/repository/migration.go`\n   172→\n   173→## Code Generation\n   174→\n   175→**GraphQL** (gqlgen):\n   176→\n   177→- Schema: `api/schema.graphqls`\n   178→- Config: `gqlgen.yml`\n   179→- Generated code: `internal/graph/generated/`\n   180→- Custom resolvers: `internal/graph/schema.resolvers.go`\n   181→- Run `make graphql` after schema changes\n   182→\n   183→**Swagger/OpenAPI**:\n   184→\n   185→- Annotations in `internal/api/*.go`\n   186→- Generated docs: `internal/api/docs.go`, `api/swagger.yaml`\n   187→- Run `make swagger` after API changes\n   188→\n   189→## Testing Conventions\n   190→\n   191→- Test files use `_test.go` suffix\n   192→- Test data in `testdata/` subdirectories\n   193→- Repository tests use in-memory SQLite\n   194→- API tests use httptest\n   195→\n   196→## Common Workflows\n   197→\n   198→### Adding a new GraphQL field\n   199→\n   200→1. Edit schema in `api/schema.graphqls`\n   201→2. Run `make graphql`\n   202→3. Implement resolver in `internal/graph/schema.resolvers.go`\n   203→\n   204→### Adding a new REST endpoint\n   205→\n   206→1. Add handler in `internal/api/*.go`\n   207→2. Add route in `internal/api/rest.go`\n   208→3. Add Swagger annotations\n   209→4. Run `make swagger`\n   210→\n   211→### Adding a new metric data backend\n   212→\n   213→1. Implement metric loading functions in `pkg/metricstore/query.go`\n   214→2. Add cluster configuration to metric store initialization\n   215→3. Update config.json schema documentation\n   216→\n   217→### Modifying database schema\n   218→\n   219→1. Create new migration in `internal/repository/migrations/sqlite3/`\n   220→2. Increment `repository.Version`\n   221→3. Test with fresh database and existing database\n   222→\n   223→## NATS API\n   224→\n   225→The backend supports a NATS-based API as an alternative to the REST API for job and node operations.\n   226→\n   227→### Setup\n   228→\n   229→1. Configure NATS client connection in `config.json`:\n   230→   ```json\n   231→   {\n   232→     \"nats\": {\n   233→       \"address\": \"nats://localhost:4222\",\n   234→       \"username\": \"user\",\n   235→       \"password\": \"pass\"\n   236→     }\n   237→   }\n   238→   ```\n   239→\n   240→2. Configure API subjects in `config.json` under `main`:\n   241→   ```json\n   242→   {\n   243→     \"main\": {\n   244→       \"apiSubjects\": {\n   245→         \"subjectJobEvent\": \"cc.job.event\",\n   246→         \"subjectNodeState\": \"cc.node.state\"\n   247→       }\n   248→     }\n   249→   }\n   250→   ```\n   251→\n   252→### Message Format\n   253→\n   254→Messages use **InfluxDB line protocol** format with the following structure:\n   255→\n   256→#### Job Events\n   257→\n   258→**Start Job:**\n   259→```\n   260→job,function=start_job event=\"{\\\"jobId\\\":123,\\\"user\\\":\\\"alice\\\",\\\"cluster\\\":\\\"test\\\", ...}\" 1234567890000000000\n   261→```\n   262→\n   263→**Stop Job:**\n   264→```\n   265→job,function=stop_job event=\"{\\\"jobId\\\":123,\\\"cluster\\\":\\\"test\\\",\\\"startTime\\\":1234567890,\\\"stopTime\\\":1234571490,\\\"jobState\\\":\\\"completed\\\"}\" 1234571490000000000\n   266→```\n   267→\n   268→**Tags:**\n   269→- `function`: Either `start_job` or `stop_job`\n   270→\n   271→**Fields:**\n   272→- `event`: JSON payload containing job data (see REST API documentation for schema)\n   273→\n   274→#### Node State Updates\n   275→\n   276→```json\n   277→{\n   278→  \"cluster\": \"testcluster\",\n   279→  \"nodes\": [\n   280→    {\n   281→      \"hostname\": \"node001\",\n   282→      \"states\": [\"allocated\"],\n   283→      \"cpusAllocated\": 8,\n   284→      \"memoryAllocated\": 16384,\n   285→      \"gpusAllocated\": 0,\n   286→      \"jobsRunning\": 1\n   287→    }\n   288→  ]\n   289→}\n   290→```\n   291→\n   292→### Implementation Notes\n   293→\n   294→- NATS API mirrors REST API functionality but uses messaging\n   295→- Job start/stop events are processed asynchronously\n   296→- Duplicate job detection is handled (same as REST API)\n   297→- All validation rules from REST API apply\n   298→- Messages are logged; no responses are sent back to publishers\n   299→- If NATS client is unavailable, API subscriptions are skipped (logged as warning)\n   300→\n   301→## Dependencies\n   302→\n   303→- Go 1.24.0+ (check go.mod for exact version)\n   304→- Node.js (for frontend builds)\n   305→- SQLite 3 (only supported database)\n   306→- Optional: NATS server for NATS API integration\n   307→"}]},"uuid":"ca981386-ad06-41bd-82c4-920ae55cf4e9","timestamp":"2026-03-16T11:10:21.063Z"},"type":"agent_progress","prompt":"","agentId":"a379ecc75bfa5944a"},"toolUseID":"agent_msg_01E84TDzstrH6QPmN3FXDjnM","parentToolUseID":"toolu_01RfjwLRZ45KeNLSLxTFWg82","uuid":"00660aa6-ec54-495b-9dc5-c169d2015907","timestamp":"2026-03-16T11:10:21.078Z","userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"23bd02ee-e611-4488-a3d4-71ca93985943","version":"2.1.76","gitBranch":"hotfix","slug":"magical-sauteeing-gosling"}
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+{"parentUuid":"2bc6af97-2c34-44ca-a321-12fb8d0b6753","isSidechain":false,"type":"progress","data":{"message":{"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01BdUif4HZCX1M4wBk6NDgHp","type":"tool_result","content":"     1→# NOTE\n     2→\n     3→While we do our best to keep the master branch in a usable state, there is no guarantee the master branch works.\n     4→Please do not use it for production!\n     5→\n     6→Please have a look at the [Release\n     7→Notes](https://github.com/ClusterCockpit/cc-backend/blob/master/ReleaseNotes.md)\n     8→for breaking changes!\n     9→\n    10→# ClusterCockpit REST and GraphQL API backend\n    11→\n    12→[![Build](https://github.com/ClusterCockpit/cc-backend/actions/workflows/test.yml/badge.svg)](https://github.com/ClusterCockpit/cc-backend/actions/workflows/test.yml)\n    13→\n    14→This is a Golang backend implementation for a REST and GraphQL API according to\n    15→the [ClusterCockpit\n    16→specifications](https://github.com/ClusterCockpit/cc-specifications). It also\n    17→includes a web interface for ClusterCockpit. This implementation replaces the\n    18→previous PHP Symfony based ClusterCockpit web interface. The reasons for\n    19→switching from PHP Symfony to a Golang based solution are explained\n    20→[here](https://github.com/ClusterCockpit/ClusterCockpit/wiki/Why-we-switched-from-PHP-Symfony-to-a-Golang-based-solution).\n    21→\n    22→## Overview\n    23→\n    24→This is a Golang web backend for the ClusterCockpit job-specific performance\n    25→monitoring framework. It provides a REST API and an optional NATS-based messaging\n    26→API for integrating ClusterCockpit with an HPC cluster batch system and external\n    27→analysis scripts. Data exchange between the web front-end and the back-end is\n    28→based on a GraphQL API. The web frontend is also served by the backend using\n    29→[Svelte](https://svelte.dev/) components. Layout and styling are based on\n    30→[Bootstrap 5](https://getbootstrap.com/) using\n    31→[Bootstrap Icons](https://icons.getbootstrap.com/).\n    32→\n    33→The backend uses [SQLite 3](https://sqlite.org/) as the relational SQL database.\n    34→While there are metric data backends for the InfluxDB and Prometheus time series\n    35→databases, the only tested and supported setup is to use cc-metric-store as the\n    36→metric data backend. Documentation on how to integrate ClusterCockpit with other\n    37→time series databases will be added in the future.\n    38→\n    39→For real-time integration with HPC systems, the backend can subscribe to\n    40→[NATS](https://nats.io/) subjects to receive job start/stop events and node\n    41→state updates, providing an alternative to REST API polling.\n    42→\n    43→Completed batch jobs are stored in a file-based job archive according to\n    44→[this specification](https://github.com/ClusterCockpit/cc-specifications/tree/master/job-archive).\n    45→The backend supports authentication via local accounts, an external LDAP\n    46→directory, and JWT tokens. Authorization for APIs is implemented with\n    47→[JWT](https://jwt.io/) tokens created with public/private key encryption.\n    48→\n    49→You find a detailed documentation on the [ClusterCockpit\n    50→Webpage](https://clustercockpit.org).\n    51→\n    52→## Build requirements\n    53→\n    54→ClusterCockpit requires a current version of the golang toolchain and node.js.\n    55→You can check `go.mod` to see what is the current minimal golang version needed.\n    56→Homebrew and Archlinux usually have current golang versions. For other Linux\n    57→distros this often means that you have to install the golang compiler yourself.\n    58→Fortunately, this is easy with golang. Since much of the functionality is based\n    59→on the Go standard library, it is crucial for security and performance to use a\n    60→current version of golang. In addition, an old golang toolchain may limit the supported\n    61→versions of third-party packages.\n    62→\n    63→## How to try ClusterCockpit with a demo setup\n    64→\n    65→We provide a shell script that downloads demo data and automatically starts the\n    66→cc-backend. You will need `wget`, `go`, `node`, `npm` in your path to\n    67→start the demo. The demo downloads 32MB of data (223MB on disk).\n    68→\n    69→```sh\n    70→git clone https://github.com/ClusterCockpit/cc-backend.git\n    71→cd ./cc-backend\n    72→./startDemo.sh\n    73→```\n    74→\n    75→You can also try the demo using the latest release binary.\n    76→Create a folder and put the release binary `cc-backend` into this folder.\n    77→Execute the following steps:\n    78→\n    79→```shell\n    80→./cc-backend -init\n    81→vim config.json (Add a second cluster entry and name the clusters alex and fritz)\n    82→wget https://hpc-mover.rrze.uni-erlangen.de/HPC-Data/0x7b58aefb/eig7ahyo6fo2bais0ephuf2aitohv1ai/job-archive-demo.tar\n    83→tar xf job-archive-demo.tar\n    84→./cc-backend -init-db -add-user demo:admin:demo -loglevel info\n    85→./cc-backend -server -dev -loglevel info\n    86→```\n    87→\n    88→You can access the web interface at [http://localhost:8080](http://localhost:8080).\n    89→Credentials for login are `demo:demo`.\n    90→Please note that some views do not work without a metric backend (e.g., the\n    91→Analysis, Systems and Status views).\n    92→\n    93→## How to build and run\n    94→\n    95→There is a Makefile to automate the build of cc-backend. The Makefile supports\n    96→the following targets:\n    97→\n    98→- `make`: Initialize `var` directory and build svelte frontend and backend\n    99→  binary. Note that there is no proper prerequisite handling. Any change of\n   100→  frontend source files will result in a complete rebuild.\n   101→- `make clean`: Clean go build cache and remove binary.\n   102→- `make test`: Run the tests that are also run in the GitHub workflow setup.\n   103→\n   104→A common workflow for setting up cc-backend from scratch is:\n   105→\n   106→```sh\n   107→git clone https://github.com/ClusterCockpit/cc-backend.git\n   108→\n   109→# Build binary\n   110→cd ./cc-backend/\n   111→make\n   112→\n   113→# EDIT THE .env FILE BEFORE YOU DEPLOY (Change the secrets)!\n   114→# If authentication is disabled, it can be empty.\n   115→cp configs/env-template.txt  .env\n   116→vim .env\n   117→\n   118→cp configs/config.json .\n   119→vim config.json\n   120→\n   121→#Optional: Link an existing job archive:\n   122→ln -s <your-existing-job-archive> ./var/job-archive\n   123→\n   124→# This will first initialize the job.db database by traversing all\n   125→# `meta.json` files in the job-archive and add a new user.\n   126→./cc-backend -init-db -add-user <your-username>:admin:<your-password>\n   127→\n   128→# Start a HTTP server (HTTPS can be enabled in the configuration, the default port is 8080).\n   129→# The --dev flag enables GraphQL Playground (http://localhost:8080/playground) and Swagger UI (http://localhost:8080/swagger).\n   130→./cc-backend -server  -dev\n   131→\n   132→# Show other options:\n   133→./cc-backend -help\n   134→```\n   135→\n   136→## Database Configuration\n   137→\n   138→cc-backend uses SQLite as its database. For large installations, SQLite memory\n   139→usage can be tuned via the optional `db-config` section in config.json under\n   140→`main`:\n   141→\n   142→```json\n   143→{\n   144→  \"main\": {\n   145→    \"db\": \"./var/job.db\",\n   146→    \"db-config\": {\n   147→      \"cache-size-mb\": 2048,\n   148→      \"soft-heap-limit-mb\": 16384,\n   149→      \"max-open-connections\": 4,\n   150→      \"max-idle-connections\": 4,\n   151→      \"max-idle-time-minutes\": 10,\n   152→      \"busy-timeout-ms\": 60000\n   153→    }\n   154→  }\n   155→}\n   156→```\n   157→\n   158→All fields are optional. If `db-config` is omitted entirely, built-in defaults\n   159→are used.\n   160→\n   161→### Options\n   162→\n   163→| Option                  | Default | Description                                                                                                                                                                             |\n   164→| ----------------------- | ------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n   165→| `cache-size-mb`         | 2048    | SQLite page cache size per connection in MB. Maps to `PRAGMA cache_size`. Total cache memory is up to `cache-size-mb × max-open-connections`.                                           |\n   166→| `soft-heap-limit-mb`    | 16384   | Process-wide SQLite soft heap limit in MB. SQLite will try to release cache pages to stay under this limit. Queries won't fail if exceeded, but cache eviction becomes more aggressive. |\n   167→| `max-open-connections`  | 4       | Maximum number of open database connections.                                                                                                                                            |\n   168→| `max-idle-connections`  | 4       | Maximum number of idle database connections kept in the pool.                                                                                                                           |\n   169→| `max-idle-time-minutes` | 10      | Maximum time in minutes a connection can sit idle before being closed.                                                                                                                  |\n   170→| `busy-timeout-ms`       | 60000   | SQLite busy timeout in milliseconds. When a write is blocked by another writer, SQLite retries internally with backoff for up to this duration before returning `SQLITE_BUSY`.          |\n   171→\n   172→### Sizing Guidelines\n   173→\n   174→SQLite's `cache_size` is a **per-connection** setting — each connection\n   175→maintains its own independent page cache. With multiple connections, the total\n   176→memory available for caching is the sum across all connections.\n   177→\n   178→In practice, different connections tend to cache **different pages** (e.g., one\n   179→handles a job listing query while another runs a statistics aggregation), so\n   180→their caches naturally spread across the database. The formula\n   181→`DB_size / max-open-connections` gives enough per-connection cache that the\n   182→combined caches can cover the entire database.\n   183→\n   184→However, this is a best-case estimate. Connections running similar queries will\n   185→cache the same pages redundantly. In the worst case (all connections caching\n   186→identical pages), only `cache-size-mb` worth of unique data is cached rather\n   187→than `cache-size-mb × max-open-connections`. For workloads with diverse\n   188→concurrent queries, cache overlap is typically low.\n   189→\n   190→**Rules of thumb:**\n   191→\n   192→- **cache-size-mb**: Set to `DB_size_in_MB / max-open-connections` to allow the\n   193→  entire database to be cached in memory. For example, an 80GB database with 8\n   194→  connections needs at least 10240 MB (10GB) per connection. If your workload\n   195→  has many similar concurrent queries, consider setting it higher to account for\n   196→  cache overlap between connections.\n   197→\n   198→- **soft-heap-limit-mb**: Should be >= `cache-size-mb × max-open-connections` to\n   199→  avoid cache thrashing. This is the total SQLite memory budget for the process.\n   200→- On small installations the defaults work well. 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Depending on your database size (more then 40GB) the\n    12→`VACUUM` may take up to 2h.\n    13→\n    14→## Known issues\n    15→\n    16→- The new dynamic memory management is not bullet proof yet across restarts.\n    17→  Buffers that are kept outside the retention period may be lost across a\n    18→  restart. We will fix that in a subsequent patch release.\n    19→- To use the new log viewer (which is only working when starting cc-backend with\n    20→  systemd) in the admin interface the user under which the cc-backend process is\n    21→  running has to be allowed to execute the journalctl command.\n    22→- The user configuration keys for the ui have changed. Therefore old user\n    23→  configuration persisted in the database is not used anymore. It is recommended\n    24→  to configure the metrics shown in the ui-config sestion and remove all records\n    25→  in the table after the update.\n    26→- Currently energy footprint metrics of type energy are ignored for calculating\n    27→  total energy.\n    28→- With energy footprint metrics of type power the unit is ignored and it is\n    29→  assumed the metric has the unit Watt.\n    30→\n    31→## Changes in 1.5.1\n    32→\n    33→### Database\n    34→\n    35→- **New migration (version 11)**: Optimized database index count and added covering indexes for stats queries for significantly improved query performance\n    36→- **Migration 9 fix**: Removed redundant indices from migration 9 that are superseded by migration 11\n    37→- **Optional DB optimization flag**: Added `-optimize-db` CLI flag to run `ANALYZE` on demand; removed automatic ANALYZE on startup\n    38→- **Selective stats queries**: Stats queries are now selective, reducing unnecessary computation\n    39→- **User list paging**: Added paging support to the user list for better scalability\n    40→- **SQLite configuration hardening**: Sanitized SQLite configuration with new configurable options; fixes large heap allocations in the SQLite driver\n    41→- **Query cancellation**: Long-running database queries can now be cancelled\n    42→- **Resource leak fix**: Added missing `defer Close()` calls for all query result sets\n    43→\n    44→### Bug fixes\n    45→\n    46→- **Segfault when taggers misconfigured**: Fixed crash when `enable-job-taggers` is set but tagger rule directories are missing\n    47→- **GroupBy stats query complexity**: Reduced complexity for `groupBy` statistics queries\n    48→- **Ranged filter conditions**: Fixed GT and LT conditions in ranged filters\n    49→- **Energy filter preset**: Reduced energy filter preset to a more practical default\n    50→- **JSON validity check**: Fixed wrong field being checked for JSON validity\n    51→- **Tagger float rounding**: Fixed rounding of floats in tagger messages\n    52→- **Node view null safety**: Added null-safe checks in node view to prevent runtime errors\n    53→- **Public dashboard null safety**: Added null-safe checks in the public dashboard to prevent runtime errors\n    54→\n    55→### Frontend\n    56→\n    57→- **Bumped patch versions**: Updated frontend dependencies to latest patch versions\n    58→\n    59→### Documentation\n    60→\n    61→- **New DB config options**: Added new database configuration options to README\n    62→\n    63→---\n    64→\n    65→_The sections below document all features and changes introduced in the 1.5.0 major release, which 1.5.1 is based on._\n    66→\n    67→## Breaking changes\n    68→\n    69→### Configuration changes\n    70→\n    71→- **JSON attribute naming**: All JSON configuration attributes now use `kebab-case`\n    72→  style consistently (e.g., `api-allowed-ips` instead of `apiAllowedIPs`).\n    73→  Update your `config.json` accordingly.\n    74→- **Removed `disable-archive` option**: This obsolete configuration option has been removed.\n    75→- **Removed `clusters` config section**: The separate clusters configuration section\n    76→  has been removed. Cluster information is now derived from the job archive.\n    77→- **`apiAllowedIPs` is now optional**: If not specified, defaults to not\n    78→  restricted.\n    79→\n    80→### Architecture changes\n    81→\n    82→- **Web framework replaced**: Migrated from `gorilla/mux` to `chi` as the HTTP\n    83→  router. This should be transparent to users but affects how middleware and\n    84→  routes are composed. A proper 404 handler is now in place.\n    85→- **MetricStore moved**: The `metricstore` package has been moved from `internal/`\n    86→  to `pkg/` as it is now part of the public API.\n    87→- **MySQL/MariaDB support removed**: Only SQLite is now supported as the database backend.\n    88→- **Archive to Cleanup renaming**: Archive-related functions have been refactored\n    89→  and renamed to \"Cleanup\" for clarity.\n    90→- **`minRunningFor` filter removed**: This undocumented filter has been removed\n    91→  from the API and frontend.\n    92→\n    93→### Dependency changes\n    94→\n    95→- **cc-lib v2.8.0**: Switched to cc-lib version 2 with updated APIs\n    96→- **cclib NATS client**: Now using the cclib NATS client implementation\n    97→- Removed obsolete `util.Float` usage from cclib\n    98→\n    99→## Major new features\n   100→\n   101→### NATS API Integration\n   102→\n   103→- **Real-time job events**: Subscribe to job start/stop events via NATS\n   104→- **Node state updates**: Receive real-time node state changes via NATS\n   105→- **Configurable subjects**: NATS API subjects are now configurable via `api-subjects`\n   106→- **Deadlock fixes**: Improved NATS client stability and graceful shutdown\n   107→\n   108→### Public Dashboard\n   109→\n   110→- **Public-facing interface**: New public dashboard route for external users\n   111→- **DoubleMetricPlot component**: New visualization component for comparing metrics\n   112→- **Improved layout**: Reviewed and optimized dashboard layouts for better readability\n   113→\n   114→### Enhanced Node Management\n   115→\n   116→- **Node state tracking**: New node table in database with timestamp tracking\n   117→- **Node state filtering**: Filter jobs by node state in systems view\n   118→- **Node list enhancements**: Improved paging, filtering, and continuous scroll support\n   119→- **Nodestate retention and archiving**: Node state data is now subject to configurable\n   120→  retention policies and can be archived to Parquet format for long-term storage\n   121→- **Faulty node metric tracking**: Faulty node state metric lists are persisted to the database\n   122→\n   123→### Health Monitoring\n   124→\n   125→- **Health status dashboard**: New dedicated \"Health\" tab in the status details view\n   126→  showing per-node metric health across the cluster\n   127→- **CCMS health check**: Support for querying health status of external\n   128→  cc-metric-store (CCMS) instances via the API\n   129→- **GraphQL health endpoints**: New GraphQL queries and resolvers for health data\n   130→- **Cluster/subcluster filter**: Filter health status view by cluster or subcluster\n   131→\n   132→### Log Viewer\n   133→\n   134→- **Web-based log viewer**: New log viewer page in the admin interface for inspecting\n   135→  backend log output directly from the browser without shell access\n   136→- **Accessible from header**: Quick access link from the navigation header\n   137→\n   138→### MetricStore Improvements\n   139→\n   140→- **Memory tracking worker**: New worker for CCMS memory usage tracking\n   141→- **Dynamic retention**: Support for job specific dynamic retention times\n   142→- **Improved compression**: Transparent compression for job archive imports\n   143→- **Parallel processing**: Parallelized Iter function in all archive backends\n   144→\n   145→### Job Tagging System\n   146→\n   147→- **Job tagger option**: Enable automatic job tagging via configuration flag\n   148→- **Application detection**: Automatic detection of applications (MATLAB, GROMACS, etc.)\n   149→- **Job classification**: Automatic detection of pathological jobs\n   150→- **omit-tagged**: Option to exclude tagged jobs from retention/cleanup operations (`none`, `all`, or `user`)"}]},"uuid":"111e48df-dc90-4b28-90ae-374d3c2d85db","timestamp":"2026-03-16T11:10:26.040Z"},"type":"agent_progress","prompt":"","agentId":"a379ecc75bfa5944a"},"toolUseID":"agent_msg_01E84TDzstrH6QPmN3FXDjnM","parentToolUseID":"toolu_01RfjwLRZ45KeNLSLxTFWg82","uuid":"ad79a261-48bb-44a9-930a-94a01ecafb52","timestamp":"2026-03-16T11:10:26.371Z","userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"23bd02ee-e611-4488-a3d4-71ca93985943","version":"2.1.76","gitBranch":"hotfix","slug":"magical-sauteeing-gosling"}
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Applies to user- and jobs views.\",\n    13→      \"type\": \"object\",\n    14→      \"properties\": {\n    15→        \"use-paging\": {\n    16→          \"description\": \"If classic paging is used instead of continuous scrolling by default.\",\n    17→          \"type\": \"boolean\"\n    18→        },\n    19→        \"show-footprint\": {\n    20→          \"description\": \"If footprint bars are shown as first column by default.\",\n    21→          \"type\": \"boolean\"\n    22→        }\n    23→      }\n    24→    },\n    25→    \"node-list\": {\n    26→      \"description\": \"Node list defaults. Applies to node list view.\",\n    27→      \"type\": \"object\",\n    28→      \"properties\": {\n    29→        \"use-paging\": {\n    30→          \"description\": \"If classic paging is used instead of continuous scrolling by default.\",\n    31→          \"type\": \"boolean\"\n    32→        }\n    33→      }\n    34→    },\n    35→    \"job-view\": {\n    36→      \"description\": \"Job view defaults.\",\n    37→      \"type\": \"object\",\n    38→      \"properties\": {\n    39→        \"show-polar-plot\": {\n    40→          \"description\": \"If the job metric footprints polar plot is shown by default.\",\n    41→          \"type\": \"boolean\"\n    42→        },\n    43→        \"show-footprint\": {\n    44→          \"description\": \"If the annotated job metric footprint bars are shown by default.\",\n    45→          \"type\": \"boolean\"\n    46→        },\n    47→        \"show-roofline\": {\n    48→          \"description\": \"If the job roofline plot is shown by default.\",\n    49→          \"type\": \"boolean\"\n    50→        },\n    51→        \"show-stat-table\": {\n    52→          \"description\": \"If the job metric statistics table is shown by default.\",\n    53→          \"type\": \"boolean\"\n    54→        }\n    55→      }\n    56→    },\n    57→    \"metric-config\": {\n    58→      \"description\": \"Global initial metric selections for primary views of all clusters.\",\n    59→      \"type\": \"object\",\n    60→      \"properties\": {\n    61→        \"job-list-metrics\": {\n    62→          \"description\": \"Initial metrics shown for new users in job lists (User and jobs view).\",\n    63→          \"type\": \"array\",\n    64→          \"items\": {\n    65→            \"type\": \"string\",\n    66→            \"minItems\": 1\n    67→          }\n    68→        },\n    69→        \"job-view-plot-metrics\": {\n    70→          \"description\": \"Initial metrics shown for new users as job view metric plots.\",\n    71→          \"type\": \"array\",\n    72→          \"items\": {\n    73→            \"type\": \"string\",\n    74→            \"minItems\": 1\n    75→          }\n    76→        },\n    77→        \"job-view-table-metrics\": {\n    78→          \"description\": \"Initial metrics shown for new users in job view statistics table.\",\n    79→          \"type\": \"array\",\n    80→          \"items\": {\n    81→            \"type\": \"string\",\n    82→            \"minItems\": 1\n    83→          }\n    84→        },\n    85→        \"clusters\": {\n    86→          \"description\": \"Overrides for global defaults by cluster and subcluster.\",\n    87→          \"type\": \"array\",\n    88→          \"items\": {\n    89→            \"type\": \"object\",\n    90→            \"properties\": {\n    91→              \"name\": {\n    92→                \"description\": \"The name of the cluster.\"\n    93→              },\n    94→              \"job-list-metrics\": {\n    95→                \"description\": \"Initial metrics shown for new users in job lists (User and jobs view) for subcluster.\",\n    96→                \"type\": \"array\",\n    97→                \"items\": {\n    98→                  \"type\": \"string\",\n    99→                  \"minItems\": 1\n   100→                }"}]},"uuid":"7157ecfb-5838-48d3-b6b3-f74079f00b1f","timestamp":"2026-03-16T11:10:36.045Z"},"type":"agent_progress","prompt":"","agentId":"a379ecc75bfa5944a"},"toolUseID":"agent_msg_01E84TDzstrH6QPmN3FXDjnM","parentToolUseID":"toolu_01RfjwLRZ45KeNLSLxTFWg82","uuid":"4f7d33c6-8bc4-4c2e-b59a-655457cf0e81","timestamp":"2026-03-16T11:10:36.108Z","userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"23bd02ee-e611-4488-a3d4-71ca93985943","version":"2.1.76","gitBranch":"hotfix","slug":"magical-sauteeing-gosling"}
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+{"parentUuid":"4b4a5be9-ee44-4d17-88ba-c2f0f03f5ac0","isSidechain":false,"promptId":"424bb283-9622-4c78-ab8d-57d55b32d949","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01RfjwLRZ45KeNLSLxTFWg82","type":"tool_result","content":[{"type":"text","text":"Perfect! Now I have a complete picture. Let me compile my findings:\n\n## Summary of NATS Configuration Documentation and Config Schema\n\nI've thoroughly searched the cc-backend repository and found all NATS-related configuration documentation and schema definitions. Here are the key findings:\n\n### 1. **Main Config Struct Definition**\n**File:** `/Users/jan/prg/ClusterCockpit/cc-backend/internal/config/config.go` (lines 117-122)\n\nThe `NATSConfig` struct defines NATS API subject configuration:\n```go\ntype NATSConfig struct {\n\tSubjectJobEvent  string `json:\"subject-job-event\"`\n\tSubjectNodeState string `json:\"subject-node-state\"`\n\tJobConcurrency   int    `json:\"job-concurrency\"`\n\tNodeConcurrency  int    `json:\"node-concurrency\"`\n}\n```\n\nLocated in the `ProgramConfig` struct at line 25:\n```go\nAPISubjects *NATSConfig `json:\"api-subjects\"`\n```\n\n### 2. **JSON Schema Definition**\n**File:** `/Users/jan/prg/ClusterCockpit/cc-backend/internal/config/schema.go` (lines 113-127)\n\nDefines the JSON schema for `api-subjects` configuration:\n```json\n\"api-subjects\": {\n  \"description\": \"NATS subjects configuration for subscribing to job and node events.\",\n  \"type\": \"object\",\n  \"properties\": {\n    \"subject-job-event\": {\n      \"description\": \"NATS subject for job events (start_job, stop_job)\",\n      \"type\": \"string\"\n    },\n    \"subject-node-state\": {\n      \"description\": \"NATS subject for node state updates\",\n      \"type\": \"string\"\n    }\n  },\n  \"required\": [\"subject-job-event\", \"subject-node-state\"]\n}\n```\n\nAlso includes `db-config` schema (lines 181-210) for database tuning including `busy-timeout-ms`.\n\n### 3. **NATS API Implementation**\n**File:** `/Users/jan/prg/ClusterCockpit/cc-backend/internal/api/nats.go`\n\n- Comprehensive documentation in comments (lines 37-71) explaining InfluxDB line protocol message format\n- `NatsAPI` struct with job and node worker pools (lines 72-81)\n- `NewNatsAPI()` function (lines 85-113) using `JobConcurrency` and `NodeConcurrency` from config with defaults of 8 and 2\n- `StartSubscriptions()` method (lines 132-157) that subscribes to configured subjects\n\n### 4. **Example Configuration Files**\n\n**File:** `/Users/jan/prg/ClusterCockpit/cc-backend/configs/config.json` (lines 21-24)\n```json\n\"api-subjects\": {\n  \"subject-job-event\": \"cc.job.event\",\n  \"subject-node-state\": \"cc.node.state\"\n}\n```\n\n**File:** `/Users/jan/prg/ClusterCockpit/cc-backend/configs/config.json` (lines 26-29) - NATS client configuration:\n```json\n\"nats\": {\n  \"address\": \"nats://0.0.0.0:4222\",\n  \"username\": \"root\",\n  \"password\": \"root\"\n}\n```\n\n### 5. **Comprehensive Documentation**\n\n**File:** `/Users/jan/prg/ClusterCockpit/cc-backend/CLAUDE.md` (lines 223-307)\n\nComplete \"NATS API\" section covering:\n- Setup instructions (config.json sections for NATS client and API subjects)\n- Message format (InfluxDB line protocol)\n- Job events (start/stop)\n- Node state updates\n- Implementation notes\n\n**File:** `/Users/jan/prg/ClusterCockpit/cc-backend/README.md` (lines 25-26, 39-41)\n\nReferences to NATS integration for real-time job/node updates\n\n**File:** `/Users/jan/prg/ClusterCockpit/cc-backend/ReleaseNotes.md` (lines 99-107)\n\nDocuments NATS API Integration as a major feature in v1.5.0\n\n### 6. **Tests**\n**File:** `/Users/jan/prg/ClusterCockpit/cc-backend/internal/api/nats_test.go`\n\nProvides test setup and examples of NATS API usage\n\n### Key Configuration Path\nThe configuration structure in config.json follows this hierarchy:\n```\nmain\n├── api-subjects (NATSConfig)\n│   ├── subject-job-event\n│   ├── subject-node-state\n│   ├── job-concurrency (optional, default: 8)\n│   └── node-concurrency (optional, default: 2)\nnats (separate NATS client connection config)\n├── address\n├── username\n└── password\n```\n\nAll files are absolute paths as listed above. The NATS configuration is optional - if not provided, the API subscriptions are skipped with a warning log."},{"type":"text","text":"agentId: a379ecc75bfa5944a (for resuming to continue this agent's work if needed)\n<usage>total_tokens: 56126\ntool_uses: 19\nduration_ms: 32302</usage>"}]}]},"uuid":"9718fa92-6617-42a0-a8cb-c34d3a27a267","timestamp":"2026-03-16T11:10:48.986Z","toolUseResult":{"status":"completed","prompt":"Find all files related to NATS configuration documentation and config schema in the cc-backend repository at /Users/jan/prg/ClusterCockpit/cc-backend. I'm looking for:\n\n1. Any config schema files (JSON schema, Go config structs) that define NATS-related configuration options\n2. Documentation files that describe NATS API functionality or configuration\n3. The config struct that defines APISubjects/NATSConfig\n\nSearch thoroughly - check configs/, docs/, internal/config/, CLAUDE.md, and any markdown or JSON schema files.","agentId":"a379ecc75bfa5944a","content":[{"type":"text","text":"Perfect! Now I have a complete picture. Let me compile my findings:\n\n## Summary of NATS Configuration Documentation and Config Schema\n\nI've thoroughly searched the cc-backend repository and found all NATS-related configuration documentation and schema definitions. Here are the key findings:\n\n### 1. **Main Config Struct Definition**\n**File:** `/Users/jan/prg/ClusterCockpit/cc-backend/internal/config/config.go` (lines 117-122)\n\nThe `NATSConfig` struct defines NATS API subject configuration:\n```go\ntype NATSConfig struct {\n\tSubjectJobEvent  string `json:\"subject-job-event\"`\n\tSubjectNodeState string `json:\"subject-node-state\"`\n\tJobConcurrency   int    `json:\"job-concurrency\"`\n\tNodeConcurrency  int    `json:\"node-concurrency\"`\n}\n```\n\nLocated in the `ProgramConfig` struct at line 25:\n```go\nAPISubjects *NATSConfig `json:\"api-subjects\"`\n```\n\n### 2. **JSON Schema Definition**\n**File:** `/Users/jan/prg/ClusterCockpit/cc-backend/internal/config/schema.go` (lines 113-127)\n\nDefines the JSON schema for `api-subjects` configuration:\n```json\n\"api-subjects\": {\n  \"description\": \"NATS subjects configuration for subscribing to job and node events.\",\n  \"type\": \"object\",\n  \"properties\": {\n    \"subject-job-event\": {\n      \"description\": \"NATS subject for job events (start_job, stop_job)\",\n      \"type\": \"string\"\n    },\n    \"subject-node-state\": {\n      \"description\": \"NATS subject for node state updates\",\n      \"type\": \"string\"\n    }\n  },\n  \"required\": [\"subject-job-event\", \"subject-node-state\"]\n}\n```\n\nAlso includes `db-config` schema (lines 181-210) for database tuning including `busy-timeout-ms`.\n\n### 3. **NATS API Implementation**\n**File:** `/Users/jan/prg/ClusterCockpit/cc-backend/internal/api/nats.go`\n\n- Comprehensive documentation in comments (lines 37-71) explaining InfluxDB line protocol message format\n- `NatsAPI` struct with job and node worker pools (lines 72-81)\n- `NewNatsAPI()` function (lines 85-113) using `JobConcurrency` and `NodeConcurrency` from config with defaults of 8 and 2\n- `StartSubscriptions()` method (lines 132-157) that subscribes to configured subjects\n\n### 4. **Example Configuration Files**\n\n**File:** `/Users/jan/prg/ClusterCockpit/cc-backend/configs/config.json` (lines 21-24)\n```json\n\"api-subjects\": {\n  \"subject-job-event\": \"cc.job.event\",\n  \"subject-node-state\": \"cc.node.state\"\n}\n```\n\n**File:** `/Users/jan/prg/ClusterCockpit/cc-backend/configs/config.json` (lines 26-29) - NATS client configuration:\n```json\n\"nats\": {\n  \"address\": \"nats://0.0.0.0:4222\",\n  \"username\": \"root\",\n  \"password\": \"root\"\n}\n```\n\n### 5. **Comprehensive Documentation**\n\n**File:** `/Users/jan/prg/ClusterCockpit/cc-backend/CLAUDE.md` (lines 223-307)\n\nComplete \"NATS API\" section covering:\n- Setup instructions (config.json sections for NATS client and API subjects)\n- Message format (InfluxDB line protocol)\n- Job events (start/stop)\n- Node state updates\n- Implementation notes\n\n**File:** `/Users/jan/prg/ClusterCockpit/cc-backend/README.md` (lines 25-26, 39-41)\n\nReferences to NATS integration for real-time job/node updates\n\n**File:** `/Users/jan/prg/ClusterCockpit/cc-backend/ReleaseNotes.md` (lines 99-107)\n\nDocuments NATS API Integration as a major feature in v1.5.0\n\n### 6. **Tests**\n**File:** `/Users/jan/prg/ClusterCockpit/cc-backend/internal/api/nats_test.go`\n\nProvides test setup and examples of NATS API usage\n\n### Key Configuration Path\nThe configuration structure in config.json follows this hierarchy:\n```\nmain\n├── api-subjects (NATSConfig)\n│   ├── subject-job-event\n│   ├── subject-node-state\n│   ├── job-concurrency (optional, default: 8)\n│   └── node-concurrency (optional, default: 2)\nnats (separate NATS client connection config)\n├── address\n├── username\n└── password\n```\n\nAll files are absolute paths as listed above. The NATS configuration is optional - if not provided, the API subscriptions are skipped with a warning log."}],"totalDurationMs":32302,"totalTokens":56126,"totalToolUseCount":19,"usage":{"input_tokens":5,"cache_creation_input_tokens":672,"cache_read_input_tokens":54219,"output_tokens":1230,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":0,"ephemeral_5m_input_tokens":672},"inference_geo":"","iterations":[],"speed":"standard"}},"sourceToolAssistantUUID":"4b4a5be9-ee44-4d17-88ba-c2f0f03f5ac0","userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"23bd02ee-e611-4488-a3d4-71ca93985943","version":"2.1.76","gitBranch":"hotfix","slug":"magical-sauteeing-gosling"}
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+{"parentUuid":"4e7d3142-c523-4ecb-896d-9abb5e85abd0","isSidechain":false,"promptId":"424bb283-9622-4c78-ab8d-57d55b32d949","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01WQjw33obfcTuRseYxVyaDu","type":"tool_result","content":"     1→// Copyright (C) NHR@FAU, University Erlangen-Nuremberg.\n     2→// All rights reserved. This file is part of cc-backend.\n     3→// Use of this source code is governed by a MIT-style\n     4→// license that can be found in the LICENSE file.\n     5→\n     6→// Package config implements the program configuration data structures, validation and parsing\n     7→package config\n     8→\n     9→import (\n    10→\t\"bytes\"\n    11→\t\"encoding/json\"\n    12→\t\"time\"\n    13→\n    14→\tcclog \"github.com/ClusterCockpit/cc-lib/v2/ccLogger\"\n    15→\t\"github.com/ClusterCockpit/cc-lib/v2/resampler\"\n    16→)\n    17→\n    18→type ProgramConfig struct {\n    19→\t// Address where the http (or https) server will listen on (for example: 'localhost:80').\n    20→\tAddr string `json:\"addr\"`\n    21→\n    22→\t// Addresses from which secured admin API endpoints can be reached, can be wildcard \"*\"\n    23→\tAPIAllowedIPs []string `json:\"api-allowed-ips\"`\n    24→\n    25→\tAPISubjects *NATSConfig `json:\"api-subjects\"`\n    26→\n    27→\t// Drop root permissions once .env was read and the port was taken.\n    28→\tUser  string `json:\"user\"`\n    29→\tGroup string `json:\"group\"`\n    30→\n    31→\t// Disable authentication (for everything: API, Web-UI, ...)\n    32→\tDisableAuthentication bool `json:\"disable-authentication\"`\n    33→\n    34→\t// If `embed-static-files` is true (default), the frontend files are directly\n    35→\t// embeded into the go binary and expected to be in web/frontend. Only if\n    36→\t// it is false the files in `static-files` are served instead.\n    37→\tEmbedStaticFiles bool   `json:\"embed-static-files\"`\n    38→\tStaticFiles      string `json:\"static-files\"`\n    39→\n    40→\t// Path to SQLite database file\n    41→\tDB string `json:\"db\"`\n    42→\n    43→\tEnableJobTaggers bool `json:\"enable-job-taggers\"`\n    44→\n    45→\t// Validate json input against schema\n    46→\tValidate bool `json:\"validate\"`\n    47→\n    48→\t// If 0 or empty, the session does not expire!\n    49→\tSessionMaxAge string `json:\"session-max-age\"`\n    50→\n    51→\t// If both those options are not empty, use HTTPS using those certificates.\n    52→\tHTTPSCertFile string `json:\"https-cert-file\"`\n    53→\tHTTPSKeyFile  string `json:\"https-key-file\"`\n    54→\n    55→\t// If not the empty string and `addr` does not end in \":80\",\n    56→\t// redirect every request incoming at port 80 to that url.\n    57→\tRedirectHTTPTo string `json:\"redirect-http-to\"`\n    58→\n    59→\t// Where to store MachineState files\n    60→\tMachineStateDir string `json:\"machine-state-dir\"`\n    61→\n    62→\t// If not zero, automatically mark jobs as stopped running X seconds longer than their walltime.\n    63→\tStopJobsExceedingWalltime int `json:\"stop-jobs-exceeding-walltime\"`\n    64→\n    65→\t// Defines time X in seconds in which jobs are considered to be \"short\" and will be filtered in specific views.\n    66→\tShortRunningJobsDuration int `json:\"short-running-jobs-duration\"`\n    67→\n    68→\t// Energy Mix CO2 Emission Constant [g/kWh]\n    69→\t// If entered, displays estimated CO2 emission for job based on jobs totalEnergy\n    70→\tEmissionConstant int `json:\"emission-constant\"`\n    71→\n    72→\t// If exists, will enable dynamic zoom in frontend metric plots using the configured values\n    73→\tEnableResampling *ResampleConfig `json:\"resampling\"`\n    74→\n    75→\t// Systemd unit name for log viewer (default: \"clustercockpit\")\n    76→\tSystemdUnit string `json:\"systemd-unit\"`\n    77→\n    78→\t// Node state retention configuration\n    79→\tNodeStateRetention *NodeStateRetention `json:\"nodestate-retention\"`\n    80→\n    81→\t// Database tuning configuration\n    82→\tDbConfig *DbConfig `json:\"db-config\"`\n    83→}\n    84→\n    85→type DbConfig struct {\n    86→\tCacheSizeMB               int `json:\"cache-size-mb\"`\n    87→\tSoftHeapLimitMB           int `json:\"soft-heap-limit-mb\"`\n    88→\tMaxOpenConnections        int `json:\"max-open-connections\"`\n    89→\tMaxIdleConnections        int `json:\"max-idle-connections\"`\n    90→\tConnectionMaxIdleTimeMins int `json:\"max-idle-time-minutes\"`\n    91→\tBusyTimeoutMs             int `json:\"busy-timeout-ms\"`\n    92→}\n    93→\n    94→type NodeStateRetention struct {\n    95→\tPolicy             string `json:\"policy\"`      // \"delete\" or \"move\"\n    96→\tAge                int    `json:\"age\"`         // hours, default 24\n    97→\tTargetKind         string `json:\"target-kind\"` // \"file\" or \"s3\"\n    98→\tTargetPath         string `json:\"target-path\"`\n    99→\tTargetEndpoint     string `json:\"target-endpoint\"`\n   100→\tTargetBucket       string `json:\"target-bucket\"`\n   101→\tTargetAccessKey    string `json:\"target-access-key\"`\n   102→\tTargetSecretKey    string `json:\"target-secret-key\"`\n   103→\tTargetRegion       string `json:\"target-region\"`\n   104→\tTargetUsePathStyle bool   `json:\"target-use-path-style\"`\n   105→\tMaxFileSizeMB      int    `json:\"max-file-size-mb\"`\n   106→}\n   107→\n   108→type ResampleConfig struct {\n   109→\t// Minimum number of points to trigger resampling of data\n   110→\tMinimumPoints int `json:\"minimum-points\"`\n   111→\t// Array of resampling target resolutions, in seconds; Example: [600,300,60]\n   112→\tResolutions []int `json:\"resolutions\"`\n   113→\t// Trigger next zoom level at less than this many visible datapoints\n   114→\tTrigger int `json:\"trigger\"`\n   115→}\n   116→\n   117→type NATSConfig struct {\n   118→\tSubjectJobEvent  string `json:\"subject-job-event\"`\n   119→\tSubjectNodeState string `json:\"subject-node-state\"`\n   120→\tJobConcurrency   int    `json:\"job-concurrency\"`\n   121→\tNodeConcurrency  int    `json:\"node-concurrency\"`\n   122→}\n   123→\n   124→type IntRange struct {\n   125→\tFrom int `json:\"from\"`\n   126→\tTo   int `json:\"to\"`\n   127→}\n   128→\n   129→type TimeRange struct {\n   130→\tFrom  *time.Time `json:\"from\"`\n   131→\tTo    *time.Time `json:\"to\"`\n   132→\tRange string     `json:\"range,omitempty\"`\n   133→}\n   134→\n   135→type FilterRanges struct {\n   136→\tDuration  *IntRange  `json:\"duration\"`\n   137→\tNumNodes  *IntRange  `json:\"num-nodes\"`\n   138→\tStartTime *TimeRange `json:\"start-time\"`\n   139→}\n   140→\n   141→var Keys ProgramConfig = ProgramConfig{\n   142→\tAddr:                      \"localhost:8080\",\n   143→\tEmbedStaticFiles:          true,\n   144→\tDB:                        \"./var/job.db\",\n   145→\tSessionMaxAge:             \"168h\",\n   146→\tStopJobsExceedingWalltime: 0,\n   147→\tShortRunningJobsDuration:  5 * 60,\n   148→}\n   149→\n   150→func Init(mainConfig json.RawMessage) {\n   151→\tValidate(configSchema, mainConfig)\n   152→\tdec := json.NewDecoder(bytes.NewReader(mainConfig))\n   153→\tdec.DisallowUnknownFields()\n   154→\tif err := dec.Decode(&Keys); err != nil {\n   155→\t\tcclog.Abortf(\"Config Init: Could not decode config file '%s'.\\nError: %s\\n\", mainConfig, err.Error())\n   156→\t}\n   157→\n   158→\tif Keys.EnableResampling != nil && Keys.EnableResampling.MinimumPoints > 0 {\n   159→\t\tresampler.SetMinimumRequiredPoints(Keys.EnableResampling.MinimumPoints)\n   160→\t}\n   161→}\n   162→"}]},"uuid":"b8ace8c0-9e24-42a3-b761-be00a0d5ea3d","timestamp":"2026-03-16T11:10:53.033Z","toolUseResult":{"type":"text","file":{"filePath":"/Users/jan/prg/ClusterCockpit/cc-backend/internal/config/config.go","content":"// Copyright (C) NHR@FAU, University Erlangen-Nuremberg.\n// All rights reserved. This file is part of cc-backend.\n// Use of this source code is governed by a MIT-style\n// license that can be found in the LICENSE file.\n\n// Package config implements the program configuration data structures, validation and parsing\npackage config\n\nimport (\n\t\"bytes\"\n\t\"encoding/json\"\n\t\"time\"\n\n\tcclog \"github.com/ClusterCockpit/cc-lib/v2/ccLogger\"\n\t\"github.com/ClusterCockpit/cc-lib/v2/resampler\"\n)\n\ntype ProgramConfig struct {\n\t// Address where the http (or https) server will listen on (for example: 'localhost:80').\n\tAddr string `json:\"addr\"`\n\n\t// Addresses from which secured admin API endpoints can be reached, can be wildcard \"*\"\n\tAPIAllowedIPs []string `json:\"api-allowed-ips\"`\n\n\tAPISubjects *NATSConfig `json:\"api-subjects\"`\n\n\t// Drop root permissions once .env was read and the port was taken.\n\tUser  string `json:\"user\"`\n\tGroup string `json:\"group\"`\n\n\t// Disable authentication (for everything: API, Web-UI, ...)\n\tDisableAuthentication bool `json:\"disable-authentication\"`\n\n\t// If `embed-static-files` is true (default), the frontend files are directly\n\t// embeded into the go binary and expected to be in web/frontend. Only if\n\t// it is false the files in `static-files` are served instead.\n\tEmbedStaticFiles bool   `json:\"embed-static-files\"`\n\tStaticFiles      string `json:\"static-files\"`\n\n\t// Path to SQLite database file\n\tDB string `json:\"db\"`\n\n\tEnableJobTaggers bool `json:\"enable-job-taggers\"`\n\n\t// Validate json input against schema\n\tValidate bool `json:\"validate\"`\n\n\t// If 0 or empty, the session does not expire!\n\tSessionMaxAge string `json:\"session-max-age\"`\n\n\t// If both those options are not empty, use HTTPS using those certificates.\n\tHTTPSCertFile string `json:\"https-cert-file\"`\n\tHTTPSKeyFile  string `json:\"https-key-file\"`\n\n\t// If not the empty string and `addr` does not end in \":80\",\n\t// redirect every request incoming at port 80 to that url.\n\tRedirectHTTPTo string `json:\"redirect-http-to\"`\n\n\t// Where to store MachineState files\n\tMachineStateDir string `json:\"machine-state-dir\"`\n\n\t// If not zero, automatically mark jobs as stopped running X seconds longer than their walltime.\n\tStopJobsExceedingWalltime int `json:\"stop-jobs-exceeding-walltime\"`\n\n\t// Defines time X in seconds in which jobs are considered to be \"short\" and will be filtered in specific views.\n\tShortRunningJobsDuration int `json:\"short-running-jobs-duration\"`\n\n\t// Energy Mix CO2 Emission Constant [g/kWh]\n\t// If entered, displays estimated CO2 emission for job based on jobs totalEnergy\n\tEmissionConstant int `json:\"emission-constant\"`\n\n\t// If exists, will enable dynamic zoom in frontend metric plots using the configured values\n\tEnableResampling *ResampleConfig `json:\"resampling\"`\n\n\t// Systemd unit name for log viewer (default: \"clustercockpit\")\n\tSystemdUnit string `json:\"systemd-unit\"`\n\n\t// Node state retention configuration\n\tNodeStateRetention *NodeStateRetention `json:\"nodestate-retention\"`\n\n\t// Database tuning configuration\n\tDbConfig *DbConfig `json:\"db-config\"`\n}\n\ntype DbConfig struct {\n\tCacheSizeMB               int `json:\"cache-size-mb\"`\n\tSoftHeapLimitMB           int `json:\"soft-heap-limit-mb\"`\n\tMaxOpenConnections        int `json:\"max-open-connections\"`\n\tMaxIdleConnections        int `json:\"max-idle-connections\"`\n\tConnectionMaxIdleTimeMins int `json:\"max-idle-time-minutes\"`\n\tBusyTimeoutMs             int `json:\"busy-timeout-ms\"`\n}\n\ntype NodeStateRetention struct {\n\tPolicy             string `json:\"policy\"`      // \"delete\" or \"move\"\n\tAge                int    `json:\"age\"`         // hours, default 24\n\tTargetKind         string `json:\"target-kind\"` // \"file\" or \"s3\"\n\tTargetPath         string `json:\"target-path\"`\n\tTargetEndpoint     string `json:\"target-endpoint\"`\n\tTargetBucket       string `json:\"target-bucket\"`\n\tTargetAccessKey    string `json:\"target-access-key\"`\n\tTargetSecretKey    string `json:\"target-secret-key\"`\n\tTargetRegion       string `json:\"target-region\"`\n\tTargetUsePathStyle bool   `json:\"target-use-path-style\"`\n\tMaxFileSizeMB      int    `json:\"max-file-size-mb\"`\n}\n\ntype ResampleConfig struct {\n\t// Minimum number of points to trigger resampling of data\n\tMinimumPoints int `json:\"minimum-points\"`\n\t// Array of resampling target resolutions, in seconds; Example: [600,300,60]\n\tResolutions []int `json:\"resolutions\"`\n\t// Trigger next zoom level at less than this many visible datapoints\n\tTrigger int `json:\"trigger\"`\n}\n\ntype NATSConfig struct {\n\tSubjectJobEvent  string `json:\"subject-job-event\"`\n\tSubjectNodeState string `json:\"subject-node-state\"`\n\tJobConcurrency   int    `json:\"job-concurrency\"`\n\tNodeConcurrency  int    `json:\"node-concurrency\"`\n}\n\ntype IntRange struct {\n\tFrom int `json:\"from\"`\n\tTo   int `json:\"to\"`\n}\n\ntype TimeRange struct {\n\tFrom  *time.Time `json:\"from\"`\n\tTo    *time.Time `json:\"to\"`\n\tRange string     `json:\"range,omitempty\"`\n}\n\ntype FilterRanges struct {\n\tDuration  *IntRange  `json:\"duration\"`\n\tNumNodes  *IntRange  `json:\"num-nodes\"`\n\tStartTime *TimeRange `json:\"start-time\"`\n}\n\nvar Keys ProgramConfig = ProgramConfig{\n\tAddr:                      \"localhost:8080\",\n\tEmbedStaticFiles:          true,\n\tDB:                        \"./var/job.db\",\n\tSessionMaxAge:             \"168h\",\n\tStopJobsExceedingWalltime: 0,\n\tShortRunningJobsDuration:  5 * 60,\n}\n\nfunc Init(mainConfig json.RawMessage) {\n\tValidate(configSchema, mainConfig)\n\tdec := json.NewDecoder(bytes.NewReader(mainConfig))\n\tdec.DisallowUnknownFields()\n\tif err := dec.Decode(&Keys); err != nil {\n\t\tcclog.Abortf(\"Config Init: Could not decode config file '%s'.\\nError: %s\\n\", mainConfig, err.Error())\n\t}\n\n\tif Keys.EnableResampling != nil && Keys.EnableResampling.MinimumPoints > 0 {\n\t\tresampler.SetMinimumRequiredPoints(Keys.EnableResampling.MinimumPoints)\n\t}\n}\n","numLines":162,"startLine":1,"totalLines":162}},"sourceToolAssistantUUID":"4e7d3142-c523-4ecb-896d-9abb5e85abd0","userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"23bd02ee-e611-4488-a3d4-71ca93985943","version":"2.1.76","gitBranch":"hotfix","slug":"magical-sauteeing-gosling"}
+{"parentUuid":"b8ace8c0-9e24-42a3-b761-be00a0d5ea3d","isSidechain":false,"message":{"model":"claude-opus-4-6","id":"msg_019ak8EHGd98HrmM3fEkZBdw","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01KN6yZXsdcqNNhfwsFsgVcR","name":"Read","input":{"file_path":"/Users/jan/prg/ClusterCockpit/cc-backend/internal/config/schema.go"},"caller":{"type":"direct"}}],"stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":1571,"cache_read_input_tokens":39033,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":1571},"output_tokens":25,"service_tier":"standard","inference_geo":"not_available"}},"requestId":"req_011CZ6f4rxfJg8nwmgRyv5m6","type":"assistant","uuid":"53a95010-990d-4fb8-aa84-a69dc98d8ca4","timestamp":"2026-03-16T11:10:53.127Z","userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"23bd02ee-e611-4488-a3d4-71ca93985943","version":"2.1.76","gitBranch":"hotfix","slug":"magical-sauteeing-gosling"}
+{"parentUuid":"53a95010-990d-4fb8-aa84-a69dc98d8ca4","isSidechain":false,"type":"progress","data":{"type":"hook_progress","hookEvent":"PostToolUse","hookName":"PostToolUse:Read","command":"callback"},"parentToolUseID":"toolu_01KN6yZXsdcqNNhfwsFsgVcR","toolUseID":"toolu_01KN6yZXsdcqNNhfwsFsgVcR","timestamp":"2026-03-16T11:10:53.132Z","uuid":"ced99221-802f-4d1b-9b8c-717b95af5a7e","userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"23bd02ee-e611-4488-a3d4-71ca93985943","version":"2.1.76","gitBranch":"hotfix","slug":"magical-sauteeing-gosling"}
+{"parentUuid":"53a95010-990d-4fb8-aa84-a69dc98d8ca4","isSidechain":false,"promptId":"424bb283-9622-4c78-ab8d-57d55b32d949","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01KN6yZXsdcqNNhfwsFsgVcR","type":"tool_result","content":"     1→// Copyright (C) NHR@FAU, University Erlangen-Nuremberg.\n     2→// All rights reserved. This file is part of cc-backend.\n     3→// Use of this source code is governed by a MIT-style\n     4→// license that can be found in the LICENSE file.\n     5→\n     6→package config\n     7→\n     8→var configSchema = `\n     9→{\n    10→  \"type\": \"object\",\n    11→  \"properties\": {\n    12→    \"addr\": {\n    13→      \"description\": \"Address where the http (or https) server will listen on (for example: 'localhost:80').\",\n    14→      \"type\": \"string\"\n    15→    },\n    16→    \"api-allowed-ips\": {\n    17→      \"description\": \"Addresses from which secured API endpoints can be reached\",\n    18→      \"type\": \"array\",\n    19→      \"items\": {\n    20→        \"type\": \"string\"\n    21→      }\n    22→    },\n    23→    \"user\": {\n    24→      \"description\": \"Drop root permissions once .env was read and the port was taken. Only applicable if using privileged port.\",\n    25→      \"type\": \"string\"\n    26→    },\n    27→    \"group\": {\n    28→      \"description\": \"Drop root permissions once .env was read and the port was taken. Only applicable if using privileged port.\",\n    29→      \"type\": \"string\"\n    30→    },\n    31→    \"disable-authentication\": {\n    32→      \"description\": \"Disable authentication (for everything: API, Web-UI, ...).\",\n    33→      \"type\": \"boolean\"\n    34→    },\n    35→    \"embed-static-files\": {\n    36→      \"description\": \"If all files in web/frontend/public should be served from within the binary itself (they are embedded) or not.\",\n    37→      \"type\": \"boolean\"\n    38→    },\n    39→    \"static-files\": {\n    40→      \"description\": \"Folder where static assets can be found, if embed-static-files is false.\",\n    41→      \"type\": \"string\"\n    42→    },\n    43→    \"db\": {\n    44→      \"description\": \"Path to SQLite database file (e.g., './var/job.db')\",\n    45→      \"type\": \"string\"\n    46→    },\n    47→    \"enable-job-taggers\": {\n    48→      \"description\": \"Turn on automatic application and jobclass taggers\",\n    49→      \"type\": \"boolean\"\n    50→    },\n    51→    \"validate\": {\n    52→      \"description\": \"Validate all input json documents against json schema.\",\n    53→      \"type\": \"boolean\"\n    54→    },\n    55→    \"session-max-age\": {\n    56→      \"description\": \"Specifies for how long a session shall be valid  as a string parsable by time.ParseDuration(). If 0 or empty, the session/token does not expire!\",\n    57→      \"type\": \"string\"\n    58→    },\n    59→    \"https-cert-file\": {\n    60→      \"description\": \"Filepath to SSL certificate. If also https-key-file is set use HTTPS using those certificates.\",\n    61→      \"type\": \"string\"\n    62→    },\n    63→    \"https-key-file\": {\n    64→      \"description\": \"Filepath to SSL key file. If also https-cert-file is set use HTTPS using those certificates.\",\n    65→      \"type\": \"string\"\n    66→    },\n    67→    \"redirect-http-to\": {\n    68→      \"description\": \"If not the empty string and addr does not end in :80, redirect every request incoming at port 80 to that url.\",\n    69→      \"type\": \"string\"\n    70→    },\n    71→    \"stop-jobs-exceeding-walltime\": {\n    72→      \"description\": \"If not zero, automatically mark jobs as stopped running X seconds longer than their walltime. Only applies if walltime is set for job.\",\n    73→      \"type\": \"integer\"\n    74→    },\n    75→    \"short-running-jobs-duration\": {\n    76→      \"description\": \"Do not show running jobs shorter than X seconds.\",\n    77→      \"type\": \"integer\"\n    78→    },\n    79→    \"emission-constant\": {\n    80→      \"description\": \"Energy mix CO2 emission constant [g/kWh]. If set, displays estimated CO2 emission for jobs.\",\n    81→      \"type\": \"integer\"\n    82→    },\n    83→    \"machine-state-dir\": {\n    84→      \"description\": \"Where to store MachineState files.\",\n    85→      \"type\": \"string\"\n    86→    },\n    87→    \"systemd-unit\": {\n    88→      \"description\": \"Systemd unit name for log viewer (default: 'clustercockpit').\",\n    89→      \"type\": \"string\"\n    90→    },\n    91→    \"resampling\": {\n    92→      \"description\": \"Enable dynamic zoom in frontend metric plots.\",\n    93→      \"type\": \"object\",\n    94→      \"properties\": {\n    95→        \"minimum-points\": {\n    96→          \"description\": \"Minimum points to trigger resampling of time-series data.\",\n    97→          \"type\": \"integer\"\n    98→        },\n    99→        \"trigger\": {\n   100→          \"description\": \"Trigger next zoom level at less than this many visible datapoints.\",\n   101→          \"type\": \"integer\"\n   102→        },\n   103→        \"resolutions\": {\n   104→          \"description\": \"Array of resampling target resolutions, in seconds.\",\n   105→          \"type\": \"array\",\n   106→          \"items\": {\n   107→            \"type\": \"integer\"\n   108→          }\n   109→        }\n   110→      },\n   111→      \"required\": [\"trigger\", \"resolutions\"]\n   112→    },\n   113→    \"api-subjects\": {\n   114→      \"description\": \"NATS subjects configuration for subscribing to job and node events.\",\n   115→      \"type\": \"object\",\n   116→      \"properties\": {\n   117→        \"subject-job-event\": {\n   118→          \"description\": \"NATS subject for job events (start_job, stop_job)\",\n   119→          \"type\": \"string\"\n   120→        },\n   121→        \"subject-node-state\": {\n   122→          \"description\": \"NATS subject for node state updates\",\n   123→          \"type\": \"string\"\n   124→        }\n   125→      },\n   126→      \"required\": [\"subject-job-event\", \"subject-node-state\"]\n   127→    },\n   128→    \"nodestate-retention\": {\n   129→      \"description\": \"Node state retention configuration for cleaning up old node_state rows.\",\n   130→      \"type\": \"object\",\n   131→      \"properties\": {\n   132→        \"policy\": {\n   133→          \"description\": \"Retention policy: 'delete' to remove old rows, 'move' to archive to Parquet then delete.\",\n   134→          \"type\": \"string\",\n   135→          \"enum\": [\"delete\", \"move\"]\n   136→        },\n   137→        \"age\": {\n   138→          \"description\": \"Retention age in hours (default: 24).\",\n   139→          \"type\": \"integer\"\n   140→        },\n   141→        \"target-kind\": {\n   142→          \"description\": \"Target kind for parquet archiving: 'file' or 's3'.\",\n   143→          \"type\": \"string\",\n   144→          \"enum\": [\"file\", \"s3\"]\n   145→        },\n   146→        \"target-path\": {\n   147→          \"description\": \"Filesystem path for parquet file target.\",\n   148→          \"type\": \"string\"\n   149→        },\n   150→        \"target-endpoint\": {\n   151→          \"description\": \"S3 endpoint URL.\",\n   152→          \"type\": \"string\"\n   153→        },\n   154→        \"target-bucket\": {\n   155→          \"description\": \"S3 bucket name.\",\n   156→          \"type\": \"string\"\n   157→        },\n   158→        \"target-access-key\": {\n   159→          \"description\": \"S3 access key.\",\n   160→          \"type\": \"string\"\n   161→        },\n   162→        \"target-secret-key\": {\n   163→          \"description\": \"S3 secret key.\",\n   164→          \"type\": \"string\"\n   165→        },\n   166→        \"target-region\": {\n   167→          \"description\": \"S3 region.\",\n   168→          \"type\": \"string\"\n   169→        },\n   170→        \"target-use-path-style\": {\n   171→          \"description\": \"Use path-style S3 addressing.\",\n   172→          \"type\": \"boolean\"\n   173→        },\n   174→        \"max-file-size-mb\": {\n   175→          \"description\": \"Maximum parquet file size in MB (default: 128).\",\n   176→          \"type\": \"integer\"\n   177→        }\n   178→      },\n   179→      \"required\": [\"policy\"]\n   180→    },\n   181→    \"db-config\": {\n   182→      \"description\": \"SQLite database tuning configuration.\",\n   183→      \"type\": \"object\",\n   184→      \"properties\": {\n   185→        \"cache-size-mb\": {\n   186→          \"description\": \"SQLite page cache size per connection in MB (default: 2048).\",\n   187→          \"type\": \"integer\"\n   188→        },\n   189→        \"soft-heap-limit-mb\": {\n   190→          \"description\": \"Process-wide SQLite soft heap limit in MB (default: 16384).\",\n   191→          \"type\": \"integer\"\n   192→        },\n   193→        \"max-open-connections\": {\n   194→          \"description\": \"Maximum number of open database connections (default: 4).\",\n   195→          \"type\": \"integer\"\n   196→        },\n   197→        \"max-idle-connections\": {\n   198→          \"description\": \"Maximum number of idle database connections (default: 4).\",\n   199→          \"type\": \"integer\"\n   200→        },\n   201→        \"max-idle-time-minutes\": {\n   202→          \"description\": \"Maximum idle time for a connection in minutes (default: 10).\",\n   203→          \"type\": \"integer\"\n   204→        },\n   205→        \"busy-timeout-ms\": {\n   206→          \"description\": \"SQLite busy timeout in milliseconds. When a write is blocked, SQLite retries with backoff for up to this duration before returning SQLITE_BUSY (default: 60000).\",\n   207→          \"type\": \"integer\"\n   208→        }\n   209→      }\n   210→    }\n   211→  }\n   212→}`\n   213→"}]},"uuid":"bdc9d70c-486d-4f5d-8895-42c41ebdd16b","timestamp":"2026-03-16T11:10:53.131Z","toolUseResult":{"type":"text","file":{"filePath":"/Users/jan/prg/ClusterCockpit/cc-backend/internal/config/schema.go","content":"// Copyright (C) NHR@FAU, University Erlangen-Nuremberg.\n// All rights reserved. This file is part of cc-backend.\n// Use of this source code is governed by a MIT-style\n// license that can be found in the LICENSE file.\n\npackage config\n\nvar configSchema = `\n{\n  \"type\": \"object\",\n  \"properties\": {\n    \"addr\": {\n      \"description\": \"Address where the http (or https) server will listen on (for example: 'localhost:80').\",\n      \"type\": \"string\"\n    },\n    \"api-allowed-ips\": {\n      \"description\": \"Addresses from which secured API endpoints can be reached\",\n      \"type\": \"array\",\n      \"items\": {\n        \"type\": \"string\"\n      }\n    },\n    \"user\": {\n      \"description\": \"Drop root permissions once .env was read and the port was taken. Only applicable if using privileged port.\",\n      \"type\": \"string\"\n    },\n    \"group\": {\n      \"description\": \"Drop root permissions once .env was read and the port was taken. Only applicable if using privileged port.\",\n      \"type\": \"string\"\n    },\n    \"disable-authentication\": {\n      \"description\": \"Disable authentication (for everything: API, Web-UI, ...).\",\n      \"type\": \"boolean\"\n    },\n    \"embed-static-files\": {\n      \"description\": \"If all files in web/frontend/public should be served from within the binary itself (they are embedded) or not.\",\n      \"type\": \"boolean\"\n    },\n    \"static-files\": {\n      \"description\": \"Folder where static assets can be found, if embed-static-files is false.\",\n      \"type\": \"string\"\n    },\n    \"db\": {\n      \"description\": \"Path to SQLite database file (e.g., './var/job.db')\",\n      \"type\": \"string\"\n    },\n    \"enable-job-taggers\": {\n      \"description\": \"Turn on automatic application and jobclass taggers\",\n      \"type\": \"boolean\"\n    },\n    \"validate\": {\n      \"description\": \"Validate all input json documents against json schema.\",\n      \"type\": \"boolean\"\n    },\n    \"session-max-age\": {\n      \"description\": \"Specifies for how long a session shall be valid  as a string parsable by time.ParseDuration(). If 0 or empty, the session/token does not expire!\",\n      \"type\": \"string\"\n    },\n    \"https-cert-file\": {\n      \"description\": \"Filepath to SSL certificate. If also https-key-file is set use HTTPS using those certificates.\",\n      \"type\": \"string\"\n    },\n    \"https-key-file\": {\n      \"description\": \"Filepath to SSL key file. If also https-cert-file is set use HTTPS using those certificates.\",\n      \"type\": \"string\"\n    },\n    \"redirect-http-to\": {\n      \"description\": \"If not the empty string and addr does not end in :80, redirect every request incoming at port 80 to that url.\",\n      \"type\": \"string\"\n    },\n    \"stop-jobs-exceeding-walltime\": {\n      \"description\": \"If not zero, automatically mark jobs as stopped running X seconds longer than their walltime. Only applies if walltime is set for job.\",\n      \"type\": \"integer\"\n    },\n    \"short-running-jobs-duration\": {\n      \"description\": \"Do not show running jobs shorter than X seconds.\",\n      \"type\": \"integer\"\n    },\n    \"emission-constant\": {\n      \"description\": \"Energy mix CO2 emission constant [g/kWh]. If set, displays estimated CO2 emission for jobs.\",\n      \"type\": \"integer\"\n    },\n    \"machine-state-dir\": {\n      \"description\": \"Where to store MachineState files.\",\n      \"type\": \"string\"\n    },\n    \"systemd-unit\": {\n      \"description\": \"Systemd unit name for log viewer (default: 'clustercockpit').\",\n      \"type\": \"string\"\n    },\n    \"resampling\": {\n      \"description\": \"Enable dynamic zoom in frontend metric plots.\",\n      \"type\": \"object\",\n      \"properties\": {\n        \"minimum-points\": {\n          \"description\": \"Minimum points to trigger resampling of time-series data.\",\n          \"type\": \"integer\"\n        },\n        \"trigger\": {\n          \"description\": \"Trigger next zoom level at less than this many visible datapoints.\",\n          \"type\": \"integer\"\n        },\n        \"resolutions\": {\n          \"description\": \"Array of resampling target resolutions, in seconds.\",\n          \"type\": \"array\",\n          \"items\": {\n            \"type\": \"integer\"\n          }\n        }\n      },\n      \"required\": [\"trigger\", \"resolutions\"]\n    },\n    \"api-subjects\": {\n      \"description\": \"NATS subjects configuration for subscribing to job and node events.\",\n      \"type\": \"object\",\n      \"properties\": {\n        \"subject-job-event\": {\n          \"description\": \"NATS subject for job events (start_job, stop_job)\",\n          \"type\": \"string\"\n        },\n        \"subject-node-state\": {\n          \"description\": \"NATS subject for node state updates\",\n          \"type\": \"string\"\n        }\n      },\n      \"required\": [\"subject-job-event\", \"subject-node-state\"]\n    },\n    \"nodestate-retention\": {\n      \"description\": \"Node state retention configuration for cleaning up old node_state rows.\",\n      \"type\": \"object\",\n      \"properties\": {\n        \"policy\": {\n          \"description\": \"Retention policy: 'delete' to remove old rows, 'move' to archive to Parquet then delete.\",\n          \"type\": \"string\",\n          \"enum\": [\"delete\", \"move\"]\n        },\n        \"age\": {\n          \"description\": \"Retention age in hours (default: 24).\",\n          \"type\": \"integer\"\n        },\n        \"target-kind\": {\n          \"description\": \"Target kind for parquet archiving: 'file' or 's3'.\",\n          \"type\": \"string\",\n          \"enum\": [\"file\", \"s3\"]\n        },\n        \"target-path\": {\n          \"description\": \"Filesystem path for parquet file target.\",\n          \"type\": \"string\"\n        },\n        \"target-endpoint\": {\n          \"description\": \"S3 endpoint URL.\",\n          \"type\": \"string\"\n        },\n        \"target-bucket\": {\n          \"description\": \"S3 bucket name.\",\n          \"type\": \"string\"\n        },\n        \"target-access-key\": {\n          \"description\": \"S3 access key.\",\n          \"type\": \"string\"\n        },\n        \"target-secret-key\": {\n          \"description\": \"S3 secret key.\",\n          \"type\": \"string\"\n        },\n        \"target-region\": {\n          \"description\": \"S3 region.\",\n          \"type\": \"string\"\n        },\n        \"target-use-path-style\": {\n          \"description\": \"Use path-style S3 addressing.\",\n          \"type\": \"boolean\"\n        },\n        \"max-file-size-mb\": {\n          \"description\": \"Maximum parquet file size in MB (default: 128).\",\n          \"type\": \"integer\"\n        }\n      },\n      \"required\": [\"policy\"]\n    },\n    \"db-config\": {\n      \"description\": \"SQLite database tuning configuration.\",\n      \"type\": \"object\",\n      \"properties\": {\n        \"cache-size-mb\": {\n          \"description\": \"SQLite page cache size per connection in MB (default: 2048).\",\n          \"type\": \"integer\"\n        },\n        \"soft-heap-limit-mb\": {\n          \"description\": \"Process-wide SQLite soft heap limit in MB (default: 16384).\",\n          \"type\": \"integer\"\n        },\n        \"max-open-connections\": {\n          \"description\": \"Maximum number of open database connections (default: 4).\",\n          \"type\": \"integer\"\n        },\n        \"max-idle-connections\": {\n          \"description\": \"Maximum number of idle database connections (default: 4).\",\n          \"type\": \"integer\"\n        },\n        \"max-idle-time-minutes\": {\n          \"description\": \"Maximum idle time for a connection in minutes (default: 10).\",\n          \"type\": \"integer\"\n        },\n        \"busy-timeout-ms\": {\n          \"description\": \"SQLite busy timeout in milliseconds. When a write is blocked, SQLite retries with backoff for up to this duration before returning SQLITE_BUSY (default: 60000).\",\n          \"type\": \"integer\"\n        }\n      }\n    }\n  }\n}`\n","numLines":213,"startLine":1,"totalLines":213}},"sourceToolAssistantUUID":"53a95010-990d-4fb8-aa84-a69dc98d8ca4","userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"23bd02ee-e611-4488-a3d4-71ca93985943","version":"2.1.76","gitBranch":"hotfix","slug":"magical-sauteeing-gosling"}
+{"parentUuid":"bdc9d70c-486d-4f5d-8895-42c41ebdd16b","isSidechain":false,"message":{"model":"claude-opus-4-6","id":"msg_01DSCCcEmpM1b1vtkHLxLQ24","type":"message","role":"assistant","content":[{"type":"thinking","thinking":"","signature":"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"}],"stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":5282,"cache_read_input_tokens":40604,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":5282},"output_tokens":9,"service_tier":"standard","inference_geo":"not_available"}},"requestId":"req_011CZ6f59RN8hNbdny5h5wjn","type":"assistant","uuid":"78a073cf-c68c-4d52-92df-dadc8eaa4040","timestamp":"2026-03-16T11:10:57.548Z","userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"23bd02ee-e611-4488-a3d4-71ca93985943","version":"2.1.76","gitBranch":"hotfix","slug":"magical-sauteeing-gosling"}
+{"parentUuid":"78a073cf-c68c-4d52-92df-dadc8eaa4040","isSidechain":false,"message":{"model":"claude-opus-4-6","id":"msg_01DSCCcEmpM1b1vtkHLxLQ24","type":"message","role":"assistant","content":[{"type":"text","text":"Let me check the current diff to understand what config changes were already made."}],"stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":5282,"cache_read_input_tokens":40604,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":5282},"output_tokens":9,"service_tier":"standard","inference_geo":"not_available"}},"requestId":"req_011CZ6f59RN8hNbdny5h5wjn","type":"assistant","uuid":"c22d8225-ff22-435f-a4bb-8c8e177e2b3c","timestamp":"2026-03-16T11:10:58.093Z","userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"23bd02ee-e611-4488-a3d4-71ca93985943","version":"2.1.76","gitBranch":"hotfix","slug":"magical-sauteeing-gosling"}
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+{"parentUuid":"52f11858-cc9d-4a71-9087-43505601cb8a","isSidechain":false,"promptId":"424bb283-9622-4c78-ab8d-57d55b32d949","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01KTmHjbUmCyxpn8yHTQG7KP","type":"tool_result","content":"diff --git a/internal/config/config.go b/internal/config/config.go\nindex 517c920e..677b24e4 100644\n--- a/internal/config/config.go\n+++ b/internal/config/config.go\n@@ -117,6 +117,8 @@ type ResampleConfig struct {\n type NATSConfig struct {\n \tSubjectJobEvent  string `json:\"subject-job-event\"`\n \tSubjectNodeState string `json:\"subject-node-state\"`\n+\tJobConcurrency   int    `json:\"job-concurrency\"`\n+\tNodeConcurrency  int    `json:\"node-concurrency\"`\n }\n \n type IntRange struct {","is_error":false}]},"uuid":"39f243a8-3b19-4cc7-b188-297c19fccdd5","timestamp":"2026-03-16T11:10:59.226Z","toolUseResult":{"stdout":"diff --git a/internal/config/config.go b/internal/config/config.go\nindex 517c920e..677b24e4 100644\n--- a/internal/config/config.go\n+++ b/internal/config/config.go\n@@ -117,6 +117,8 @@ type ResampleConfig struct {\n type NATSConfig struct {\n \tSubjectJobEvent  string `json:\"subject-job-event\"`\n \tSubjectNodeState string `json:\"subject-node-state\"`\n+\tJobConcurrency   int    `json:\"job-concurrency\"`\n+\tNodeConcurrency  int    `json:\"node-concurrency\"`\n }\n \n type IntRange struct {","stderr":"","interrupted":false,"isImage":false,"noOutputExpected":false},"sourceToolAssistantUUID":"52f11858-cc9d-4a71-9087-43505601cb8a","userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"23bd02ee-e611-4488-a3d4-71ca93985943","version":"2.1.76","gitBranch":"hotfix","slug":"magical-sauteeing-gosling"}
+{"parentUuid":"39f243a8-3b19-4cc7-b188-297c19fccdd5","isSidechain":false,"message":{"model":"claude-opus-4-6","id":"msg_018r58hUFQCwXY8WNuiNsbGd","type":"message","role":"assistant","content":[{"type":"text","text":"So `JobConcurrency` and `NodeConcurrency` were added to the config struct but not yet reflected in the JSON schema or documentation. Let me also check the CLAUDE.md NATS section and example config."}],"stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":381,"cache_read_input_tokens":45886,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":381},"output_tokens":1,"service_tier":"standard","inference_geo":"not_available"}},"requestId":"req_011CZ6f5bRYpdLGLKDPtsrkX","type":"assistant","uuid":"50536692-4abf-4212-bd8f-378102cbd7f7","timestamp":"2026-03-16T11:11:03.124Z","userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"23bd02ee-e611-4488-a3d4-71ca93985943","version":"2.1.76","gitBranch":"hotfix","slug":"magical-sauteeing-gosling"}
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+{"parentUuid":"0139915b-0d93-4f05-b6e4-052051dc193f","isSidechain":false,"promptId":"424bb283-9622-4c78-ab8d-57d55b32d949","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01GRLM9N8yufrVZHu16tfLH1","type":"tool_result","content":"     1→{\n     2→  \"main\": {\n     3→    \"addr\": \"0.0.0.0:443\",\n     4→    \"https-cert-file\": \"/etc/letsencrypt/live/url/fullchain.pem\",\n     5→    \"https-key-file\": \"/etc/letsencrypt/live/url/privkey.pem\",\n     6→    \"user\": \"clustercockpit\",\n     7→    \"group\": \"clustercockpit\",\n     8→    \"api-allowed-ips\": [\"*\"],\n     9→    \"short-running-jobs-duration\": 300,\n    10→    \"enable-job-taggers\": true,\n    11→    \"nodestate-retention\": {\n    12→      \"policy\": \"move\",\n    13→      \"target-kind\": \"file\",\n    14→      \"target-path\": \"./var/nodestate-archive\"\n    15→    },\n    16→    \"resampling\": {\n    17→      \"minimum-points\": 600,\n    18→      \"trigger\": 180,\n    19→      \"resolutions\": [240, 60]\n    20→    },\n    21→    \"api-subjects\": {\n    22→      \"subject-job-event\": \"cc.job.event\",\n    23→      \"subject-node-state\": \"cc.node.state\"\n    24→    }\n    25→  },\n    26→  \"nats\": {\n    27→    \"address\": \"nats://0.0.0.0:4222\",\n    28→    \"username\": \"root\",\n    29→    \"password\": \"root\"\n    30→  },\n    31→  \"auth\": {\n    32→    \"jwts\": {\n    33→      \"max-age\": \"2000h\"\n    34→    }\n    35→  },\n    36→  \"cron\": {\n    37→    \"commit-job-worker\": \"1m\",\n    38→    \"duration-worker\": \"5m\",\n    39→    \"footprint-worker\": \"10m\"\n    40→  },\n    41→  \"archive\": {\n    42→    \"kind\": \"s3\",\n    43→    \"endpoint\": \"http://x.x.x.x\",\n    44→    \"bucket\": \"jobarchive\",\n    45→    \"access-key\": \"xx\",\n    46→    \"secret-key\": \"xx\",\n    47→    \"retention\": {\n    48→      \"policy\": \"move\",\n    49→      \"age\": 365,\n    50→      \"location\": \"./var/archive\"\n    51→    }\n    52→  },\n    53→  \"metric-store-external\": [\n    54→    {\n    55→      \"scope\": \"*\",\n    56→      \"url\": \"http://x.x.x.x:8082\",\n    57→      \"token\": \"MySecret\"\n    58→    },\n    59→    {\n    60→      \"scope\": \"fritz\",\n    61→      \"url\": \"http://x.x.x.x:8084\",\n    62→      \"token\": \"MySecret\"\n    63→    },\n    64→    {\n    65→      \"scope\": \"fritz-spr1tb\",\n    66→      \"url\": \"http://x.x.x.x:8083\",\n    67→      \"token\": \"MySecret\"\n    68→    },\n    69→    {\n    70→      \"scope\": \"alex\",\n    71→      \"url\": \"http://x.x.x.x:8084\",\n    72→      \"token\": \"MySecret\"\n    73→    }\n    74→  ],\n    75→  \"metric-store\": {\n    76→    \"checkpoints\": {\n    77→      \"directory\": \"./var/checkpoints\"\n    78→    },\n    79→    \"memory-cap\": 100,\n    80→    \"retention-in-memory\": \"24h\",\n    81→    \"cleanup\": {\n    82→      \"mode\": \"archive\",\n    83→      \"directory\": \"./var/archive\"\n    84→    },\n    85→    \"nats-subscriptions\": [\n    86→      {\n    87→        \"subscribe-to\": \"hpc-nats\",\n    88→        \"cluster-tag\": \"fritz\"\n    89→      },\n    90→      {\n    91→        \"subscribe-to\": \"hpc-nats\",\n    92→        \"cluster-tag\": \"alex\"\n    93→      }\n    94→    ]\n    95→  },\n    96→  \"ui-file\": \"ui-config.json\"\n    97→}\n    98→"}]},"uuid":"a0661faa-191f-486a-9a4a-b8be99853c0e","timestamp":"2026-03-16T11:11:03.940Z","toolUseResult":{"type":"text","file":{"filePath":"/Users/jan/prg/ClusterCockpit/cc-backend/configs/config.json","content":"{\n  \"main\": {\n    \"addr\": \"0.0.0.0:443\",\n    \"https-cert-file\": \"/etc/letsencrypt/live/url/fullchain.pem\",\n    \"https-key-file\": \"/etc/letsencrypt/live/url/privkey.pem\",\n    \"user\": \"clustercockpit\",\n    \"group\": \"clustercockpit\",\n    \"api-allowed-ips\": [\"*\"],\n    \"short-running-jobs-duration\": 300,\n    \"enable-job-taggers\": true,\n    \"nodestate-retention\": {\n      \"policy\": \"move\",\n      \"target-kind\": \"file\",\n      \"target-path\": \"./var/nodestate-archive\"\n    },\n    \"resampling\": {\n      \"minimum-points\": 600,\n      \"trigger\": 180,\n      \"resolutions\": [240, 60]\n    },\n    \"api-subjects\": {\n      \"subject-job-event\": \"cc.job.event\",\n      \"subject-node-state\": \"cc.node.state\"\n    }\n  },\n  \"nats\": {\n    \"address\": \"nats://0.0.0.0:4222\",\n    \"username\": \"root\",\n    \"password\": \"root\"\n  },\n  \"auth\": {\n    \"jwts\": {\n      \"max-age\": \"2000h\"\n    }\n  },\n  \"cron\": {\n    \"commit-job-worker\": \"1m\",\n    \"duration-worker\": \"5m\",\n    \"footprint-worker\": \"10m\"\n  },\n  \"archive\": {\n    \"kind\": \"s3\",\n    \"endpoint\": \"http://x.x.x.x\",\n    \"bucket\": \"jobarchive\",\n    \"access-key\": \"xx\",\n    \"secret-key\": \"xx\",\n    \"retention\": {\n      \"policy\": \"move\",\n      \"age\": 365,\n      \"location\": \"./var/archive\"\n    }\n  },\n  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This file is part of cc-backend.\n// Use of this source code is governed by a MIT-style\n// license that can be found in the LICENSE file.\n\npackage config\n\nvar configSchema = `\n{\n  \"type\": \"object\",\n  \"properties\": {\n    \"addr\": {\n      \"description\": \"Address where the http (or https) server will listen on (for example: 'localhost:80').\",\n      \"type\": \"string\"\n    },\n    \"api-allowed-ips\": {\n      \"description\": \"Addresses from which secured API endpoints can be reached\",\n      \"type\": \"array\",\n      \"items\": {\n        \"type\": \"string\"\n      }\n    },\n    \"user\": {\n      \"description\": \"Drop root permissions once .env was read and the port was taken. Only applicable if using privileged port.\",\n      \"type\": \"string\"\n    },\n    \"group\": {\n      \"description\": \"Drop root permissions once .env was read and the port was taken. Only applicable if using privileged port.\",\n      \"type\": \"string\"\n    },\n    \"disable-authentication\": {\n      \"description\": \"Disable authentication (for everything: API, Web-UI, ...).\",\n      \"type\": \"boolean\"\n    },\n    \"embed-static-files\": {\n      \"description\": \"If all files in web/frontend/public should be served from within the binary itself (they are embedded) or not.\",\n      \"type\": \"boolean\"\n    },\n    \"static-files\": {\n      \"description\": \"Folder where static assets can be found, if embed-static-files is false.\",\n      \"type\": \"string\"\n    },\n    \"db\": {\n      \"description\": \"Path to SQLite database file (e.g., './var/job.db')\",\n      \"type\": \"string\"\n    },\n    \"enable-job-taggers\": {\n      \"description\": \"Turn on automatic application and jobclass taggers\",\n      \"type\": \"boolean\"\n    },\n    \"validate\": {\n      \"description\": \"Validate all input json documents against json schema.\",\n      \"type\": \"boolean\"\n    },\n    \"session-max-age\": {\n      \"description\": \"Specifies for how long a session shall be valid  as a string parsable by time.ParseDuration(). If 0 or empty, the session/token does not expire!\",\n      \"type\": \"string\"\n    },\n    \"https-cert-file\": {\n      \"description\": \"Filepath to SSL certificate. If also https-key-file is set use HTTPS using those certificates.\",\n      \"type\": \"string\"\n    },\n    \"https-key-file\": {\n      \"description\": \"Filepath to SSL key file. If also https-cert-file is set use HTTPS using those certificates.\",\n      \"type\": \"string\"\n    },\n    \"redirect-http-to\": {\n      \"description\": \"If not the empty string and addr does not end in :80, redirect every request incoming at port 80 to that url.\",\n      \"type\": \"string\"\n    },\n    \"stop-jobs-exceeding-walltime\": {\n      \"description\": \"If not zero, automatically mark jobs as stopped running X seconds longer than their walltime. Only applies if walltime is set for job.\",\n      \"type\": \"integer\"\n    },\n    \"short-running-jobs-duration\": {\n      \"description\": \"Do not show running jobs shorter than X seconds.\",\n      \"type\": \"integer\"\n    },\n    \"emission-constant\": {\n      \"description\": \"Energy mix CO2 emission constant [g/kWh]. If set, displays estimated CO2 emission for jobs.\",\n      \"type\": \"integer\"\n    },\n    \"machine-state-dir\": {\n      \"description\": \"Where to store MachineState files.\",\n      \"type\": \"string\"\n    },\n    \"systemd-unit\": {\n      \"description\": \"Systemd unit name for log viewer (default: 'clustercockpit').\",\n      \"type\": \"string\"\n    },\n    \"resampling\": {\n      \"description\": \"Enable dynamic zoom in frontend metric plots.\",\n      \"type\": \"object\",\n      \"properties\": {\n        \"minimum-points\": {\n          \"description\": \"Minimum points to trigger resampling of time-series data.\",\n          \"type\": \"integer\"\n        },\n        \"trigger\": {\n          \"description\": \"Trigger next zoom level at less than this many visible datapoints.\",\n          \"type\": \"integer\"\n        },\n        \"resolutions\": {\n          \"description\": \"Array of resampling target resolutions, in seconds.\",\n          \"type\": \"array\",\n          \"items\": {\n            \"type\": \"integer\"\n          }\n        }\n      },\n      \"required\": [\"trigger\", \"resolutions\"]\n    },\n    \"api-subjects\": {\n      \"description\": \"NATS subjects configuration for subscribing to job and node events.\",\n      \"type\": \"object\",\n      \"properties\": {\n        \"subject-job-event\": {\n          \"description\": \"NATS subject for job events (start_job, stop_job)\",\n          \"type\": \"string\"\n        },\n        \"subject-node-state\": {\n          \"description\": \"NATS subject for node state updates\",\n          \"type\": \"string\"\n        }\n      },\n      \"required\": [\"subject-job-event\", \"subject-node-state\"]\n    },\n    \"nodestate-retention\": {\n      \"description\": \"Node state retention configuration for cleaning up old node_state rows.\",\n      \"type\": \"object\",\n      \"properties\": {\n        \"policy\": {\n          \"description\": \"Retention policy: 'delete' to remove old rows, 'move' to archive to Parquet then delete.\",\n          \"type\": \"string\",\n          \"enum\": [\"delete\", \"move\"]\n        },\n        \"age\": {\n          \"description\": \"Retention age in hours (default: 24).\",\n          \"type\": \"integer\"\n        },\n        \"target-kind\": {\n          \"description\": \"Target kind for parquet archiving: 'file' or 's3'.\",\n          \"type\": \"string\",\n          \"enum\": [\"file\", \"s3\"]\n        },\n        \"target-path\": {\n          \"description\": \"Filesystem path for parquet file target.\",\n          \"type\": \"string\"\n        },\n        \"target-endpoint\": {\n          \"description\": \"S3 endpoint URL.\",\n          \"type\": \"string\"\n        },\n        \"target-bucket\": {\n          \"description\": \"S3 bucket name.\",\n          \"type\": \"string\"\n        },\n        \"target-access-key\": {\n          \"description\": \"S3 access key.\",\n          \"type\": \"string\"\n        },\n        \"target-secret-key\": {\n          \"description\": \"S3 secret key.\",\n          \"type\": \"string\"\n        },\n        \"target-region\": {\n          \"description\": \"S3 region.\",\n          \"type\": \"string\"\n        },\n        \"target-use-path-style\": {\n          \"description\": \"Use path-style S3 addressing.\",\n          \"type\": \"boolean\"\n        },\n        \"max-file-size-mb\": {\n          \"description\": \"Maximum parquet file size in MB (default: 128).\",\n          \"type\": \"integer\"\n        }\n      },\n      \"required\": [\"policy\"]\n    },\n    \"db-config\": {\n      \"description\": \"SQLite database tuning configuration.\",\n      \"type\": \"object\",\n      \"properties\": {\n        \"cache-size-mb\": {\n          \"description\": \"SQLite page cache size per connection in MB (default: 2048).\",\n          \"type\": \"integer\"\n        },\n        \"soft-heap-limit-mb\": {\n          \"description\": \"Process-wide SQLite soft heap limit in MB (default: 16384).\",\n          \"type\": \"integer\"\n        },\n        \"max-open-connections\": {\n          \"description\": \"Maximum number of open database connections (default: 4).\",\n          \"type\": \"integer\"\n        },\n        \"max-idle-connections\": {\n          \"description\": \"Maximum number of idle database connections (default: 4).\",\n          \"type\": \"integer\"\n        },\n        \"max-idle-time-minutes\": {\n          \"description\": \"Maximum idle time for a connection in minutes (default: 10).\",\n          \"type\": \"integer\"\n        },\n        \"busy-timeout-ms\": {\n          \"description\": \"SQLite busy timeout in milliseconds. 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Configure API subjects in `config.json` under `main`:\n   241→   ```json\n   242→   {\n   243→     \"main\": {\n   244→       \"apiSubjects\": {\n   245→         \"subjectJobEvent\": \"cc.job.event\",\n   246→         \"subjectNodeState\": \"cc.node.state\"\n   247→       }\n   248→     }\n   249→   }\n   250→   ```\n   251→\n   252→### Message Format\n   253→\n   254→Messages use **InfluxDB line protocol** format with the following structure:\n   255→\n   256→#### Job Events\n   257→\n   258→**Start Job:**\n   259→```\n   260→job,function=start_job event=\"{\\\"jobId\\\":123,\\\"user\\\":\\\"alice\\\",\\\"cluster\\\":\\\"test\\\", ...}\" 1234567890000000000\n   261→```\n   262→\n   263→**Stop Job:**\n   264→```\n   265→job,function=stop_job event=\"{\\\"jobId\\\":123,\\\"cluster\\\":\\\"test\\\",\\\"startTime\\\":1234567890,\\\"stopTime\\\":1234571490,\\\"jobState\\\":\\\"completed\\\"}\" 1234571490000000000\n   266→```\n   267→\n   268→**Tags:**\n   269→- `function`: Either `start_job` or `stop_job`\n   270→\n   271→**Fields:**\n   272→- `event`: JSON payload containing job data (see REST API documentation for schema)\n   273→\n   274→#### Node State Updates\n   275→\n   276→```json\n   277→{\n   278→  \"cluster\": \"testcluster\",\n   279→  \"nodes\": [\n   280→    {\n   281→      \"hostname\": \"node001\",\n   282→      \"states\": [\"allocated\"],\n   283→      \"cpusAllocated\": 8,\n   284→      \"memoryAllocated\": 16384,\n   285→      \"gpusAllocated\": 0,\n   286→      \"jobsRunning\": 1\n   287→    }\n   288→  ]\n   289→}\n   290→```\n   291→\n   292→### Implementation Notes\n   293→\n   294→- NATS API mirrors REST API functionality but uses messaging\n   295→- Job start/stop events are processed asynchronously\n   296→- Duplicate job detection is handled (same as REST API)\n   297→- All validation rules from REST API apply\n   298→- Messages are logged; no responses are sent back to publishers\n   299→- If NATS client is unavailable, API subscriptions are skipped (logged as warning)\n   300→\n   301→## Dependencies\n   302→\n   303→- Go 1.24.0+ (check go.mod for exact version)\n   304→- Node.js (for frontend builds)\n   305→- SQLite 3 (only supported database)\n   306→- Optional: NATS server for NATS API integration\n   307→"}]},"uuid":"95fc60d5-e7f2-443f-b51a-cbb5a0befa2d","timestamp":"2026-03-16T11:11:17.039Z","toolUseResult":{"type":"text","file":{"filePath":"/Users/jan/prg/ClusterCockpit/cc-backend/CLAUDE.md","content":"2. Increment `repository.Version`\n3. Test with fresh database and existing database\n\n## NATS API\n\nThe backend supports a NATS-based API as an alternative to the REST API for job and node operations.\n\n### Setup\n\n1. Configure NATS client connection in `config.json`:\n   ```json\n   {\n     \"nats\": {\n       \"address\": \"nats://localhost:4222\",\n       \"username\": \"user\",\n       \"password\": \"pass\"\n     }\n   }\n   ```\n\n2. Configure API subjects in `config.json` under `main`:\n   ```json\n   {\n     \"main\": {\n       \"apiSubjects\": {\n         \"subjectJobEvent\": \"cc.job.event\",\n         \"subjectNodeState\": \"cc.node.state\"\n       }\n     }\n   }\n   ```\n\n### Message Format\n\nMessages use **InfluxDB line protocol** format with the following structure:\n\n#### Job Events\n\n**Start Job:**\n```\njob,function=start_job event=\"{\\\"jobId\\\":123,\\\"user\\\":\\\"alice\\\",\\\"cluster\\\":\\\"test\\\", ...}\" 1234567890000000000\n```\n\n**Stop Job:**\n```\njob,function=stop_job event=\"{\\\"jobId\\\":123,\\\"cluster\\\":\\\"test\\\",\\\"startTime\\\":1234567890,\\\"stopTime\\\":1234571490,\\\"jobState\\\":\\\"completed\\\"}\" 1234571490000000000\n```\n\n**Tags:**\n- `function`: Either `start_job` or `stop_job`\n\n**Fields:**\n- `event`: JSON payload containing job data (see REST API documentation for schema)\n\n#### Node State Updates\n\n```json\n{\n  \"cluster\": \"testcluster\",\n  \"nodes\": [\n    {\n      \"hostname\": \"node001\",\n      \"states\": [\"allocated\"],\n      \"cpusAllocated\": 8,\n      \"memoryAllocated\": 16384,\n      \"gpusAllocated\": 0,\n      \"jobsRunning\": 1\n    }\n  ]\n}\n```\n\n### Implementation Notes\n\n- NATS API mirrors REST API functionality but uses messaging\n- Job start/stop events are processed asynchronously\n- Duplicate job detection is handled (same as REST API)\n- All validation rules from REST API apply\n- Messages are logged; no responses are sent back to publishers\n- If NATS client is unavailable, API subscriptions are skipped (logged as warning)\n\n## Dependencies\n\n- Go 1.24.0+ (check go.mod for exact version)\n- Node.js (for frontend builds)\n- SQLite 3 (only supported database)\n- Optional: NATS server for NATS API integration\n","numLines":88,"startLine":220,"totalLines":307}},"sourceToolAssistantUUID":"a853ac20-95e0-4770-b16e-78e8751675d0","userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"23bd02ee-e611-4488-a3d4-71ca93985943","version":"2.1.76","gitBranch":"hotfix","slug":"magical-sauteeing-gosling"}
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Configure API subjects in `config.json` under `main`:\n   ```json\n   {\n     \"main\": {\n       \"api-subjects\": {\n         \"subject-job-event\": \"cc.job.event\",\n         \"subject-node-state\": \"cc.node.state\",\n         \"job-concurrency\": 8,\n         \"node-concurrency\": 2\n       }\n     }\n   }\n   ```\n   - `subject-job-event` (required): NATS subject for job start/stop events\n   - `subject-node-state` (required): NATS subject for node state updates\n   - `job-concurrency` (optional, default: 8): Number of concurrent worker goroutines for job events\n   - `node-concurrency` (optional, default: 2): Number of concurrent worker goroutines for node state events","originalFile":"# CLAUDE.md\n\nThis file provides guidance to Claude Code (claude.ai/code) when working with\ncode in this repository.\n\n## Project Overview\n\nClusterCockpit is a job-specific performance monitoring framework for HPC\nclusters. This is a Golang backend that provides REST and GraphQL APIs, serves a\nSvelte-based frontend, and manages job archives and metric data from various\ntime-series databases.\n\n## Build and Development Commands\n\n### Building\n\n```bash\n# Build everything (frontend + backend)\nmake\n\n# Build only the frontend\nmake frontend\n\n# Build only the backend (requires frontend to be built first)\ngo build -ldflags='-s -X main.date=$(date +\"%Y-%m-%d:T%H:%M:%S\") -X main.version=1.5.0 -X main.commit=$(git rev-parse --short HEAD)' ./cmd/cc-backend\n```\n\n### Testing\n\n```bash\n# Run all tests\nmake test\n\n# Run tests with verbose output\ngo test -v ./...\n\n# Run tests for a specific package\ngo test ./internal/repository\n```\n\n### Code Generation\n\n```bash\n# Regenerate GraphQL schema and resolvers (after modifying api/schema.graphqls)\nmake graphql\n\n# Regenerate Swagger/OpenAPI docs (after modifying API comments)\nmake swagger\n```\n\n### Frontend Development\n\n```bash\ncd web/frontend\n\n# Install dependencies\nnpm install\n\n# Build for production\nnpm run build\n\n# Development mode with watch\nnpm run dev\n```\n\n### Running\n\n```bash\n# Initialize database and create admin user\n./cc-backend -init-db -add-user demo:admin:demo\n\n# Start server in development mode (enables GraphQL Playground and Swagger UI)\n./cc-backend -server -dev -loglevel info\n\n# Start demo with sample data\n./startDemo.sh\n```\n\n## Architecture\n\n### Backend Structure\n\nThe backend follows a layered architecture with clear separation of concerns:\n\n- **cmd/cc-backend**: Entry point, orchestrates initialization of all subsystems\n- **internal/repository**: Data access layer using repository pattern\n  - Abstracts database operations (SQLite3 only)\n  - Implements LRU caching for performance\n  - Provides repositories for Job, User, Node, and Tag entities\n  - Transaction support for batch operations\n- **internal/api**: REST API endpoints (Swagger/OpenAPI documented)\n- **internal/graph**: GraphQL API (uses gqlgen)\n  - Schema in `api/schema.graphqls`\n  - Generated code in `internal/graph/generated/`\n  - Resolvers in `internal/graph/schema.resolvers.go`\n- **internal/auth**: Authentication layer\n  - Supports local accounts, LDAP, OIDC, and JWT tokens\n  - Implements rate limiting for login attempts\n- **pkg/metricstore**: Metric store with data loading API\n  - In-memory metric storage with checkpointing\n  - Query API for loading job metric data\n- **internal/archiver**: Job archiving to file-based archive\n- **internal/api/nats.go**: NATS-based API for job and node operations\n  - Subscribes to NATS subjects for job events (start/stop)\n  - Handles node state updates via NATS\n  - Uses InfluxDB line protocol message format\n- **pkg/archive**: Job archive backend implementations\n  - File system backend (default)\n  - S3 backend\n  - SQLite backend (experimental)\n  - **parquet** sub-package: Parquet format support (schema, reader, writer, conversion)\n- **internal/metricstoreclient**: Client for cc-metric-store queries\n\n### Frontend Structure\n\n- **web/frontend**: Svelte 5 application\n  - Uses Rollup for building\n  - Components organized by feature (analysis, job, user, etc.)\n  - GraphQL client using @urql/svelte\n  - Bootstrap 5 + SvelteStrap for UI\n  - uPlot for time-series visualization\n- **web/templates**: Server-side Go templates\n\n### Key Concepts\n\n**Job Archive**: Completed jobs are stored in a file-based archive following the\n[ClusterCockpit job-archive\nspecification](https://github.com/ClusterCockpit/cc-specifications/tree/master/job-archive).\nEach job has a `meta.json` file with metadata and metric data files.\n\n**Metric Data Repositories**: Time-series metric data is stored separately from\njob metadata. The system supports multiple backends (cc-metric-store is\nrecommended). Configuration is per-cluster in `config.json`.\n\n**Authentication Flow**:\n\n1. Multiple authenticators can be configured (local, LDAP, OIDC, JWT)\n2. Each authenticator's `CanLogin` method is called to determine if it should handle the request\n3. The first authenticator that returns true performs the actual `Login`\n4. JWT tokens are used for API authentication\n\n**Database Migrations**: SQL migrations in `internal/repository/migrations/sqlite3/` are\napplied automatically on startup. Version tracking in `version` table.\n\n**Scopes**: Metrics can be collected at different scopes:\n\n- Node scope (always available)\n- Core scope (for jobs with ≤8 nodes)\n- Accelerator scope (for GPU/accelerator metrics)\n\n## Configuration\n\n- **config.json**: Main configuration (clusters, metric repositories, archive settings)\n  - `main.apiSubjects`: NATS subject configuration (optional)\n    - `subjectJobEvent`: Subject for job start/stop events (e.g., \"cc.job.event\")\n    - `subjectNodeState`: Subject for node state updates (e.g., \"cc.node.state\")\n  - `nats`: NATS client connection configuration (optional)\n    - `address`: NATS server address (e.g., \"nats://localhost:4222\")\n    - `username`: Authentication username (optional)\n    - `password`: Authentication password (optional)\n    - `creds-file-path`: Path to NATS credentials file (optional)\n- **.env**: Environment variables (secrets like JWT keys)\n  - Copy from `configs/env-template.txt`\n  - NEVER commit this file\n- **cluster.json**: Cluster topology and metric definitions (loaded from archive or config)\n\n## Database\n\n- Default: SQLite 3 (`./var/job.db`)\n- Connection managed by `internal/repository`\n- Schema version in `internal/repository/migration.go`\n\n## Code Generation\n\n**GraphQL** (gqlgen):\n\n- Schema: `api/schema.graphqls`\n- Config: `gqlgen.yml`\n- Generated code: `internal/graph/generated/`\n- Custom resolvers: `internal/graph/schema.resolvers.go`\n- Run `make graphql` after schema changes\n\n**Swagger/OpenAPI**:\n\n- Annotations in `internal/api/*.go`\n- Generated docs: `internal/api/docs.go`, `api/swagger.yaml`\n- Run `make swagger` after API changes\n\n## Testing Conventions\n\n- Test files use `_test.go` suffix\n- Test data in `testdata/` subdirectories\n- Repository tests use in-memory SQLite\n- API tests use httptest\n\n## Common Workflows\n\n### Adding a new GraphQL field\n\n1. Edit schema in `api/schema.graphqls`\n2. Run `make graphql`\n3. Implement resolver in `internal/graph/schema.resolvers.go`\n\n### Adding a new REST endpoint\n\n1. Add handler in `internal/api/*.go`\n2. Add route in `internal/api/rest.go`\n3. Add Swagger annotations\n4. Run `make swagger`\n\n### Adding a new metric data backend\n\n1. Implement metric loading functions in `pkg/metricstore/query.go`\n2. Add cluster configuration to metric store initialization\n3. Update config.json schema documentation\n\n### Modifying database schema\n\n1. Create new migration in `internal/repository/migrations/sqlite3/`\n2. Increment `repository.Version`\n3. Test with fresh database and existing database\n\n## NATS API\n\nThe backend supports a NATS-based API as an alternative to the REST API for job and node operations.\n\n### Setup\n\n1. Configure NATS client connection in `config.json`:\n   ```json\n   {\n     \"nats\": {\n       \"address\": \"nats://localhost:4222\",\n       \"username\": \"user\",\n       \"password\": \"pass\"\n     }\n   }\n   ```\n\n2. Configure API subjects in `config.json` under `main`:\n   ```json\n   {\n     \"main\": {\n       \"apiSubjects\": {\n         \"subjectJobEvent\": \"cc.job.event\",\n         \"subjectNodeState\": \"cc.node.state\"\n       }\n     }\n   }\n   ```\n\n### Message Format\n\nMessages use **InfluxDB line protocol** format with the following structure:\n\n#### Job Events\n\n**Start Job:**\n```\njob,function=start_job event=\"{\\\"jobId\\\":123,\\\"user\\\":\\\"alice\\\",\\\"cluster\\\":\\\"test\\\", ...}\" 1234567890000000000\n```\n\n**Stop Job:**\n```\njob,function=stop_job event=\"{\\\"jobId\\\":123,\\\"cluster\\\":\\\"test\\\",\\\"startTime\\\":1234567890,\\\"stopTime\\\":1234571490,\\\"jobState\\\":\\\"completed\\\"}\" 1234571490000000000\n```\n\n**Tags:**\n- `function`: Either `start_job` or `stop_job`\n\n**Fields:**\n- `event`: JSON payload containing job data (see REST API documentation for schema)\n\n#### Node State Updates\n\n```json\n{\n  \"cluster\": \"testcluster\",\n  \"nodes\": [\n    {\n      \"hostname\": \"node001\",\n      \"states\": [\"allocated\"],\n      \"cpusAllocated\": 8,\n      \"memoryAllocated\": 16384,\n      \"gpusAllocated\": 0,\n      \"jobsRunning\": 1\n    }\n  ]\n}\n```\n\n### Implementation Notes\n\n- NATS API mirrors REST API functionality but uses messaging\n- Job start/stop events are processed asynchronously\n- Duplicate job detection is handled (same as REST API)\n- All validation rules from REST API apply\n- Messages are logged; no responses are sent back to publishers\n- If NATS client is unavailable, API subscriptions are skipped (logged as warning)\n\n## Dependencies\n\n- Go 1.24.0+ (check go.mod for exact version)\n- Node.js (for frontend builds)\n- SQLite 3 (only supported database)\n- Optional: NATS server for NATS API integration\n","structuredPatch":[{"oldStart":241,"oldLines":13,"newStart":241,"newLines":19,"lines":["    ```json","    {","      \"main\": {","-       \"apiSubjects\": {","-         \"subjectJobEvent\": \"cc.job.event\",","-         \"subjectNodeState\": \"cc.node.state\"","+       \"api-subjects\": {","+         \"subject-job-event\": \"cc.job.event\",","+         \"subject-node-state\": \"cc.node.state\",","+         \"job-concurrency\": 8,","+         \"node-concurrency\": 2","        }","      }","    }","    ```","+   - `subject-job-event` (required): NATS subject for job start/stop events","+   - `subject-node-state` (required): NATS subject for node state updates","+   - `job-concurrency` (optional, default: 8): Number of concurrent worker goroutines for job events","+   - `node-concurrency` (optional, default: 2): Number of concurrent worker goroutines for node state events"," "," ### Message Format"," "]}],"userModified":false,"replaceAll":false},"sourceToolAssistantUUID":"9a78aa10-34e1-4772-a5c5-7ede65491450","userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"23bd02ee-e611-4488-a3d4-71ca93985943","version":"2.1.76","gitBranch":"hotfix","slug":"magical-sauteeing-gosling"}
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This is a Golang backend that provides REST and GraphQL APIs, serves a\nSvelte-based frontend, and manages job archives and metric data from various\ntime-series databases.\n\n## Build and Development Commands\n\n### Building\n\n```bash\n# Build everything (frontend + backend)\nmake\n\n# Build only the frontend\nmake frontend\n\n# Build only the backend (requires frontend to be built first)\ngo build -ldflags='-s -X main.date=$(date +\"%Y-%m-%d:T%H:%M:%S\") -X main.version=1.5.0 -X main.commit=$(git rev-parse --short HEAD)' ./cmd/cc-backend\n```\n\n### Testing\n\n```bash\n# Run all tests\nmake test\n\n# Run tests with verbose output\ngo test -v ./...\n\n# Run tests for a specific package\ngo test ./internal/repository\n```\n\n### Code Generation\n\n```bash\n# Regenerate GraphQL schema and resolvers (after modifying api/schema.graphqls)\nmake graphql\n\n# Regenerate Swagger/OpenAPI docs (after modifying API comments)\nmake swagger\n```\n\n### Frontend Development\n\n```bash\ncd web/frontend\n\n# Install dependencies\nnpm install\n\n# Build for production\nnpm run build\n\n# Development mode with watch\nnpm run dev\n```\n\n### Running\n\n```bash\n# Initialize database and create admin user\n./cc-backend -init-db -add-user demo:admin:demo\n\n# Start server in development mode (enables GraphQL Playground and Swagger UI)\n./cc-backend -server -dev -loglevel info\n\n# Start demo with sample data\n./startDemo.sh\n```\n\n## Architecture\n\n### Backend Structure\n\nThe backend follows a layered architecture with clear separation of concerns:\n\n- **cmd/cc-backend**: Entry point, orchestrates initialization of all subsystems\n- **internal/repository**: Data access layer using repository pattern\n  - Abstracts database operations (SQLite3 only)\n  - Implements LRU caching for performance\n  - Provides repositories for Job, User, Node, and Tag entities\n  - Transaction support for batch operations\n- **internal/api**: REST API endpoints (Swagger/OpenAPI documented)\n- **internal/graph**: GraphQL API (uses gqlgen)\n  - Schema in `api/schema.graphqls`\n  - Generated code in `internal/graph/generated/`\n  - Resolvers in `internal/graph/schema.resolvers.go`\n- **internal/auth**: Authentication layer\n  - Supports local accounts, LDAP, OIDC, and JWT tokens\n  - Implements rate limiting for login attempts\n- **pkg/metricstore**: Metric store with data loading API\n  - In-memory metric storage with checkpointing\n  - Query API for loading job metric data\n- **internal/archiver**: Job archiving to file-based archive\n- **internal/api/nats.go**: NATS-based API for job and node operations\n  - Subscribes to NATS subjects for job events (start/stop)\n  - Handles node state updates via NATS\n  - Uses InfluxDB line protocol message format\n- **pkg/archive**: Job archive backend implementations\n  - File system backend (default)\n  - S3 backend\n  - SQLite backend (experimental)\n  - **parquet** sub-package: Parquet format support (schema, reader, writer, conversion)\n- **internal/metricstoreclient**: Client for cc-metric-store queries\n\n### Frontend Structure\n\n- **web/frontend**: Svelte 5 application\n  - Uses Rollup for building\n  - Components organized by feature (analysis, job, user, etc.)\n  - GraphQL client using @urql/svelte\n  - Bootstrap 5 + SvelteStrap for UI\n  - uPlot for time-series visualization\n- **web/templates**: Server-side Go templates\n\n### Key Concepts\n\n**Job Archive**: Completed jobs are stored in a file-based archive following the\n[ClusterCockpit job-archive\nspecification](https://github.com/ClusterCockpit/cc-specifications/tree/master/job-archive).\nEach job has a `meta.json` file with metadata and metric data files.\n\n**Metric Data Repositories**: Time-series metric data is stored separately from\njob metadata. The system supports multiple backends (cc-metric-store is\nrecommended). Configuration is per-cluster in `config.json`.\n\n**Authentication Flow**:\n\n1. Multiple authenticators can be configured (local, LDAP, OIDC, JWT)\n2. Each authenticator's `CanLogin` method is called to determine if it should handle the request\n3. The first authenticator that returns true performs the actual `Login`\n4. JWT tokens are used for API authentication\n\n**Database Migrations**: SQL migrations in `internal/repository/migrations/sqlite3/` are\napplied automatically on startup. Version tracking in `version` table.\n\n**Scopes**: Metrics can be collected at different scopes:\n\n- Node scope (always available)\n- Core scope (for jobs with ≤8 nodes)\n- Accelerator scope (for GPU/accelerator metrics)\n\n## Configuration\n\n- **config.json**: Main configuration (clusters, metric repositories, archive settings)\n  - `main.apiSubjects`: NATS subject configuration (optional)\n    - `subjectJobEvent`: Subject for job start/stop events (e.g., \"cc.job.event\")\n    - `subjectNodeState`: Subject for node state updates (e.g., \"cc.node.state\")\n  - `nats`: NATS client connection configuration (optional)\n    - `address`: NATS server address (e.g., \"nats://localhost:4222\")\n    - `username`: Authentication username (optional)\n    - `password`: Authentication password (optional)\n    - `creds-file-path`: Path to NATS credentials file (optional)\n- **.env**: Environment variables (secrets like JWT keys)\n  - Copy from `configs/env-template.txt`\n  - NEVER commit this file\n- **cluster.json**: Cluster topology and metric definitions (loaded from archive or config)\n\n## Database\n\n- Default: SQLite 3 (`./var/job.db`)\n- Connection managed by `internal/repository`\n- Schema version in `internal/repository/migration.go`\n\n## Code Generation\n\n**GraphQL** (gqlgen):\n\n- Schema: `api/schema.graphqls`\n- Config: `gqlgen.yml`\n- Generated code: `internal/graph/generated/`\n- Custom resolvers: `internal/graph/schema.resolvers.go`\n- Run `make graphql` after schema changes\n\n**Swagger/OpenAPI**:\n\n- Annotations in `internal/api/*.go`\n- Generated docs: `internal/api/docs.go`, `api/swagger.yaml`\n- Run `make swagger` after API changes\n\n## Testing Conventions\n\n- Test files use `_test.go` suffix\n- Test data in `testdata/` subdirectories\n- Repository tests use in-memory SQLite\n- API tests use httptest\n\n## Common Workflows\n\n### Adding a new GraphQL field\n\n1. Edit schema in `api/schema.graphqls`\n2. Run `make graphql`\n3. Implement resolver in `internal/graph/schema.resolvers.go`\n\n### Adding a new REST endpoint\n\n1. Add handler in `internal/api/*.go`\n2. Add route in `internal/api/rest.go`\n3. Add Swagger annotations\n4. Run `make swagger`\n\n### Adding a new metric data backend\n\n1. Implement metric loading functions in `pkg/metricstore/query.go`\n2. Add cluster configuration to metric store initialization\n3. Update config.json schema documentation\n\n### Modifying database schema\n\n1. Create new migration in `internal/repository/migrations/sqlite3/`\n2. Increment `repository.Version`\n3. Test with fresh database and existing database\n\n## NATS API\n\nThe backend supports a NATS-based API as an alternative to the REST API for job and node operations.\n\n### Setup\n\n1. Configure NATS client connection in `config.json`:\n   ```json\n   {\n     \"nats\": {\n       \"address\": \"nats://localhost:4222\",\n       \"username\": \"user\",\n       \"password\": \"pass\"\n     }\n   }\n   ```\n\n2. Configure API subjects in `config.json` under `main`:\n   ```json\n   {\n     \"main\": {\n       \"api-subjects\": {\n         \"subject-job-event\": \"cc.job.event\",\n         \"subject-node-state\": \"cc.node.state\",\n         \"job-concurrency\": 8,\n         \"node-concurrency\": 2\n       }\n     }\n   }\n   ```\n   - `subject-job-event` (required): NATS subject for job start/stop events\n   - `subject-node-state` (required): NATS subject for node state updates\n   - `job-concurrency` (optional, default: 8): Number of concurrent worker goroutines for job events\n   - `node-concurrency` (optional, default: 2): Number of concurrent worker goroutines for node state events\n\n### Message Format\n\nMessages use **InfluxDB line protocol** format with the following structure:\n\n#### Job Events\n\n**Start Job:**\n```\njob,function=start_job event=\"{\\\"jobId\\\":123,\\\"user\\\":\\\"alice\\\",\\\"cluster\\\":\\\"test\\\", ...}\" 1234567890000000000\n```\n\n**Stop Job:**\n```\njob,function=stop_job event=\"{\\\"jobId\\\":123,\\\"cluster\\\":\\\"test\\\",\\\"startTime\\\":1234567890,\\\"stopTime\\\":1234571490,\\\"jobState\\\":\\\"completed\\\"}\" 1234571490000000000\n```\n\n**Tags:**\n- `function`: Either `start_job` or `stop_job`\n\n**Fields:**\n- `event`: JSON payload containing job data (see REST API documentation for schema)\n\n#### Node State Updates\n\n```json\n{\n  \"cluster\": \"testcluster\",\n  \"nodes\": [\n    {\n      \"hostname\": \"node001\",\n      \"states\": [\"allocated\"],\n      \"cpusAllocated\": 8,\n      \"memoryAllocated\": 16384,\n      \"gpusAllocated\": 0,\n      \"jobsRunning\": 1\n    }\n  ]\n}\n```\n\n### Implementation Notes\n\n- NATS API mirrors REST API functionality but uses messaging\n- Job start/stop events are processed asynchronously\n- Duplicate job detection is handled (same as REST API)\n- All validation rules from REST API apply\n- Messages are logged; no responses are sent back to publishers\n- If NATS client is unavailable, API subscriptions are skipped (logged as warning)\n\n## Dependencies\n\n- Go 1.24.0+ (check go.mod for exact version)\n- Node.js (for frontend builds)\n- SQLite 3 (only supported database)\n- Optional: NATS server for NATS API integration\n","structuredPatch":[{"oldStart":298,"oldLines":9,"newStart":298,"newLines":10,"lines":[" ### Implementation Notes"," "," - NATS API mirrors REST API functionality but uses messaging","-- Job start/stop events are processed asynchronously","+- Job start/stop events are processed asynchronously via configurable worker pools"," - Duplicate job detection is handled (same as REST API)"," - All validation rules from REST API apply","+- Node state updates include health checks against the metric store (identical to REST handler): nodes are grouped by subcluster, metric configurations are fetched, and `HealthCheck()` is called per subcluster. 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This is a Golang backend that provides REST and GraphQL APIs, serves a\nSvelte-based frontend, and manages job archives and metric data from various\ntime-series databases.\n\n## Build and Development Commands\n\n### Building\n\n```bash\n# Build everything (frontend + backend)\nmake\n\n# Build only the frontend\nmake frontend\n\n# Build only the backend (requires frontend to be built first)\ngo build -ldflags='-s -X main.date=$(date +\"%Y-%m-%d:T%H:%M:%S\") -X main.version=1.5.0 -X main.commit=$(git rev-parse --short HEAD)' ./cmd/cc-backend\n```\n\n### Testing\n\n```bash\n# Run all tests\nmake test\n\n# Run tests with verbose output\ngo test -v ./...\n\n# Run tests for a specific package\ngo test ./internal/repository\n```\n\n### Code Generation\n\n```bash\n# Regenerate GraphQL schema and resolvers (after modifying api/schema.graphqls)\nmake graphql\n\n# Regenerate Swagger/OpenAPI docs (after modifying API comments)\nmake swagger\n```\n\n### Frontend Development\n\n```bash\ncd web/frontend\n\n# Install dependencies\nnpm install\n\n# Build for production\nnpm run build\n\n# Development mode with watch\nnpm run dev\n```\n\n### Running\n\n```bash\n# Initialize database and create admin user\n./cc-backend -init-db -add-user demo:admin:demo\n\n# Start server in development mode (enables GraphQL Playground and Swagger UI)\n./cc-backend -server -dev -loglevel info\n\n# Start demo with sample data\n./startDemo.sh\n```\n\n## Architecture\n\n### Backend Structure\n\nThe backend follows a layered architecture with clear separation of concerns:\n\n- **cmd/cc-backend**: Entry point, orchestrates initialization of all subsystems\n- **internal/repository**: Data access layer using repository pattern\n  - Abstracts database operations (SQLite3 only)\n  - Implements LRU caching for performance\n  - Provides repositories for Job, User, Node, and Tag entities\n  - Transaction support for batch operations\n- **internal/api**: REST API endpoints (Swagger/OpenAPI documented)\n- **internal/graph**: GraphQL API (uses gqlgen)\n  - Schema in `api/schema.graphqls`\n  - Generated code in `internal/graph/generated/`\n  - Resolvers in `internal/graph/schema.resolvers.go`\n- **internal/auth**: Authentication layer\n  - Supports local accounts, LDAP, OIDC, and JWT tokens\n  - Implements rate limiting for login attempts\n- **pkg/metricstore**: Metric store with data loading API\n  - In-memory metric storage with checkpointing\n  - Query API for loading job metric data\n- **internal/archiver**: Job archiving to file-based archive\n- **internal/api/nats.go**: NATS-based API for job and node operations\n  - Subscribes to NATS subjects for job events (start/stop)\n  - Handles node state updates via NATS\n  - Uses InfluxDB line protocol message format\n- **pkg/archive**: Job archive backend implementations\n  - File system backend (default)\n  - S3 backend\n  - SQLite backend (experimental)\n  - **parquet** sub-package: Parquet format support (schema, reader, writer, conversion)\n- **internal/metricstoreclient**: Client for cc-metric-store queries\n\n### Frontend Structure\n\n- **web/frontend**: Svelte 5 application\n  - Uses Rollup for building\n  - Components organized by feature (analysis, job, user, etc.)\n  - GraphQL client using @urql/svelte\n  - Bootstrap 5 + SvelteStrap for UI\n  - uPlot for time-series visualization\n- **web/templates**: Server-side Go templates\n\n### Key Concepts\n\n**Job Archive**: Completed jobs are stored in a file-based archive following the\n[ClusterCockpit job-archive\nspecification](https://github.com/ClusterCockpit/cc-specifications/tree/master/job-archive).\nEach job has a `meta.json` file with metadata and metric data files.\n\n**Metric Data Repositories**: Time-series metric data is stored separately from\njob metadata. The system supports multiple backends (cc-metric-store is\nrecommended). Configuration is per-cluster in `config.json`.\n\n**Authentication Flow**:\n\n1. Multiple authenticators can be configured (local, LDAP, OIDC, JWT)\n2. Each authenticator's `CanLogin` method is called to determine if it should handle the request\n3. The first authenticator that returns true performs the actual `Login`\n4. JWT tokens are used for API authentication\n\n**Database Migrations**: SQL migrations in `internal/repository/migrations/sqlite3/` are\napplied automatically on startup. Version tracking in `version` table.\n\n**Scopes**: Metrics can be collected at different scopes:\n\n- Node scope (always available)\n- Core scope (for jobs with ≤8 nodes)\n- Accelerator scope (for GPU/accelerator metrics)\n\n## Configuration\n\n- **config.json**: Main configuration (clusters, metric repositories, archive settings)\n  - `main.apiSubjects`: NATS subject configuration (optional)\n    - `subjectJobEvent`: Subject for job start/stop events (e.g., \"cc.job.event\")\n    - `subjectNodeState`: Subject for node state updates (e.g., \"cc.node.state\")\n  - `nats`: NATS client connection configuration (optional)\n    - `address`: NATS server address (e.g., \"nats://localhost:4222\")\n    - `username`: Authentication username (optional)\n    - `password`: Authentication password (optional)\n    - `creds-file-path`: Path to NATS credentials file (optional)\n- **.env**: Environment variables (secrets like JWT keys)\n  - Copy from `configs/env-template.txt`\n  - NEVER commit this file\n- **cluster.json**: Cluster topology and metric definitions (loaded from archive or config)\n\n## Database\n\n- Default: SQLite 3 (`./var/job.db`)\n- Connection managed by `internal/repository`\n- Schema version in `internal/repository/migration.go`\n\n## Code Generation\n\n**GraphQL** (gqlgen):\n\n- Schema: `api/schema.graphqls`\n- Config: `gqlgen.yml`\n- Generated code: `internal/graph/generated/`\n- Custom resolvers: `internal/graph/schema.resolvers.go`\n- Run `make graphql` after schema changes\n\n**Swagger/OpenAPI**:\n\n- Annotations in `internal/api/*.go`\n- Generated docs: `internal/api/docs.go`, `api/swagger.yaml`\n- Run `make swagger` after API changes\n\n## Testing Conventions\n\n- Test files use `_test.go` suffix\n- Test data in `testdata/` subdirectories\n- Repository tests use in-memory SQLite\n- API tests use httptest\n\n## Common Workflows\n\n### Adding a new GraphQL field\n\n1. Edit schema in `api/schema.graphqls`\n2. Run `make graphql`\n3. Implement resolver in `internal/graph/schema.resolvers.go`\n\n### Adding a new REST endpoint\n\n1. Add handler in `internal/api/*.go`\n2. Add route in `internal/api/rest.go`\n3. Add Swagger annotations\n4. Run `make swagger`\n\n### Adding a new metric data backend\n\n1. Implement metric loading functions in `pkg/metricstore/query.go`\n2. Add cluster configuration to metric store initialization\n3. Update config.json schema documentation\n\n### Modifying database schema\n\n1. Create new migration in `internal/repository/migrations/sqlite3/`\n2. Increment `repository.Version`\n3. Test with fresh database and existing database\n\n## NATS API\n\nThe backend supports a NATS-based API as an alternative to the REST API for job and node operations.\n\n### Setup\n\n1. Configure NATS client connection in `config.json`:\n   ```json\n   {\n     \"nats\": {\n       \"address\": \"nats://localhost:4222\",\n       \"username\": \"user\",\n       \"password\": \"pass\"\n     }\n   }\n   ```\n\n2. Configure API subjects in `config.json` under `main`:\n   ```json\n   {\n     \"main\": {\n       \"api-subjects\": {\n         \"subject-job-event\": \"cc.job.event\",\n         \"subject-node-state\": \"cc.node.state\",\n         \"job-concurrency\": 8,\n         \"node-concurrency\": 2\n       }\n     }\n   }\n   ```\n   - `subject-job-event` (required): NATS subject for job start/stop events\n   - `subject-node-state` (required): NATS subject for node state updates\n   - `job-concurrency` (optional, default: 8): Number of concurrent worker goroutines for job events\n   - `node-concurrency` (optional, default: 2): Number of concurrent worker goroutines for node state events\n\n### Message Format\n\nMessages use **InfluxDB line protocol** format with the following structure:\n\n#### Job Events\n\n**Start Job:**\n```\njob,function=start_job event=\"{\\\"jobId\\\":123,\\\"user\\\":\\\"alice\\\",\\\"cluster\\\":\\\"test\\\", ...}\" 1234567890000000000\n```\n\n**Stop Job:**\n```\njob,function=stop_job event=\"{\\\"jobId\\\":123,\\\"cluster\\\":\\\"test\\\",\\\"startTime\\\":1234567890,\\\"stopTime\\\":1234571490,\\\"jobState\\\":\\\"completed\\\"}\" 1234571490000000000\n```\n\n**Tags:**\n- `function`: Either `start_job` or `stop_job`\n\n**Fields:**\n- `event`: JSON payload containing job data (see REST API documentation for schema)\n\n#### Node State Updates\n\n```json\n{\n  \"cluster\": \"testcluster\",\n  \"nodes\": [\n    {\n      \"hostname\": \"node001\",\n      \"states\": [\"allocated\"],\n      \"cpusAllocated\": 8,\n      \"memoryAllocated\": 16384,\n      \"gpusAllocated\": 0,\n      \"jobsRunning\": 1\n    }\n  ]\n}\n```\n\n### Implementation Notes\n\n- NATS API mirrors REST API functionality but uses messaging\n- Job start/stop events are processed asynchronously via configurable worker pools\n- Duplicate job detection is handled (same as REST API)\n- All validation rules from REST API apply\n- Node state updates include health checks against the metric store (identical to REST handler): nodes are grouped by subcluster, metric configurations are fetched, and `HealthCheck()` is called per subcluster. 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\ No newline at end of file
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