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entire/checkpoints/v1
cc-backend/3a/40b75edd68/0/full.jsonl
Jan Eitzinger 25d186801e Checkpoint: 3a40b75edd68 
Entire-Session: 23bd02ee-e611-4488-a3d4-71ca93985943
Entire-Strategy: manual-commit
Entire-Agent: Claude Code
Ephemeral-branch: entire/df93dbe-e3b0c4
2026-03-16 12:13:14 +01:00

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{"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"}
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{"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,"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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{"parentUuid":"ae05ed0e-c86f-441c-8d1a-da190b5035b0","isSidechain":false,"message":{"model":"claude-opus-4-6","id":"msg_013dHjzTkkMgwKGqq4t7WkJL","type":"message","role":"assistant","content":[{"type":"text","text":"Now I have both files. I need to:\n1. Add missing imports to `nats.go`\n2. Rewrite `processNodestateEvent` to include health check logic"}],"stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":9126,"cache_read_input_tokens":19002,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":9126},"output_tokens":8,"service_tier":"standard","inference_geo":"not_available"}},"requestId":"req_011CZ6eNkikmdQ8cqW6MVgB1","type":"assistant","uuid":"0b48f518-ece3-4d48-884d-37a72d408f1f","timestamp":"2026-03-16T11:01:51.593Z","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":"2a28a8a4-17eb-43be-949b-50bc53eb997b","isSidechain":false,"promptId":"c2bc230a-67ed-4f5e-b42f-f832728effa2","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01N4qS3hE1vfryhCfktUsAJh","type":"tool_result","content":"The file /Users/jan/prg/ClusterCockpit/cc-backend/internal/api/nats.go has been updated successfully."}]},"uuid":"26984c46-f6e3-4cf1-9591-11c9bdeddda5","timestamp":"2026-03-16T11:01:55.112Z","toolUseResult":{"filePath":"/Users/jan/prg/ClusterCockpit/cc-backend/internal/api/nats.go","oldString":"\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\"","newString":"\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\"","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\"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"}
{"parentUuid":"52e6e038-207f-4ba4-bd98-7b54ad27dad1","isSidechain":false,"type":"progress","data":{"type":"hook_progress","hookEvent":"PostToolUse","hookName":"PostToolUse:Edit","command":"callback"},"parentToolUseID":"toolu_01WJ1FHQ7D85cfzjb8MN9bdA","toolUseID":"toolu_01WJ1FHQ7D85cfzjb8MN9bdA","timestamp":"2026-03-16T11:02:06.973Z","uuid":"0529d6b9-57af-4a43-9c8c-5a61ec84e1b2","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":"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--- PASS: TestNatsHandleStartJobDuplicatePrevention (0.25s)\nPASS\nok \tgithub.com/ClusterCockpit/cc-backend/internal/api\t3.952s","stderr":"","interrupted":false,"isImage":false,"noOutputExpected":false},"sourceToolAssistantUUID":"5ce0bbf2-350a-4cdd-872a-e7b54bf3b3c3","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 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"}
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{"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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{"parentUuid":"5c7a4840-d36b-4671-9fdb-9bac2424b053","isSidechain":false,"type":"progress","data":{"message":{"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01AJZwpvZgBJJubqU8U5zdV4","type":"tool_result","content":" 1→# `cc-backend` version 1.5.1\n 2→\n 3→Supports job archive version 3 and database version 11.\n 4→\n 5→This is a bugfix release of `cc-backend`, the API backend and frontend\n 6→implementation of ClusterCockpit.\n 7→For release specific notes visit the [ClusterCockpit Documentation](https://clusterockpit.org/docs/release/).\n 8→If you are upgrading from v1.5.0 you need to do another DB migration. This\n 9→should not take long. For optimal database performance after the migration it is\n 10→recommended to apply the new `optimize-db` flag, which runs the sqlite `ANALYZE`\n 11→and `VACUUM` commands. 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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{"parentUuid":"5ee76410-32e1-403c-b941-ac6c87f6e9d9","isSidechain":false,"type":"progress","data":{"message":{"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01VDMAcnzMHaqPkkFtWeFJDg","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→package api\n 6→\n 7→import (\n 8→\t\"context\"\n 9→\t\"database/sql\"\n 10→\t\"encoding/json\"\n 11→\t\"fmt\"\n 12→\t\"os\"\n 13→\t\"path/filepath\"\n 14→\t\"testing\"\n 15→\t\"time\"\n 16→\n 17→\t\"github.com/ClusterCockpit/cc-backend/internal/archiver\"\n 18→\t\"github.com/ClusterCockpit/cc-backend/internal/auth\"\n 19→\t\"github.com/ClusterCockpit/cc-backend/internal/config\"\n 20→\t\"github.com/ClusterCockpit/cc-backend/internal/graph\"\n 21→\t\"github.com/ClusterCockpit/cc-backend/internal/repository\"\n 22→\t\"github.com/ClusterCockpit/cc-backend/pkg/archive\"\n 23→\t\"github.com/ClusterCockpit/cc-backend/pkg/metricstore\"\n 24→\tccconf \"github.com/ClusterCockpit/cc-lib/v2/ccConfig\"\n 25→\tcclog \"github.com/ClusterCockpit/cc-lib/v2/ccLogger\"\n 26→\tlp \"github.com/ClusterCockpit/cc-lib/v2/ccMessage\"\n 27→\t\"github.com/ClusterCockpit/cc-lib/v2/schema\"\n 28→\n 29→\t_ \"github.com/mattn/go-sqlite3\"\n 30→)\n 31→\n 32→func setupNatsTest(t *testing.T) *NatsAPI {\n 33→\trepository.ResetConnection()\n 34→\n 35→\tconst testconfig = `{\n 36→\t\t\"main\": {\n 37→\t\"addr\": \"0.0.0.0:8080\",\n 38→\t\"validate\": false,\n 39→ \"api-allowed-ips\": [\n 40→ \"*\"\n 41→ ]\n 42→\t},\n 43→\t\"archive\": {\n 44→\t\t\"kind\": \"file\",\n 45→\t\t\"path\": \"./var/job-archive\"\n 46→\t},\n 47→\t\"auth\": {\n 48→ \"jwts\": {\n 49→ \"max-age\": \"2m\"\n 50→ }\n 51→\t}\n 52→}`\n 53→\tconst testclusterJSON = `{\n 54→ \"name\": \"testcluster\",\n 55→\t\t\"subClusters\": [\n 56→\t\t\t{\n 57→\t\t\t\t\"name\": \"sc1\",\n 58→\t\t\t\t\"nodes\": \"host123,host124,host125\",\n 59→\t\t\t\t\"processorType\": \"Intel Core i7-4770\",\n 60→\t\t\t\t\"socketsPerNode\": 1,\n 61→\t\t\t\t\"coresPerSocket\": 4,\n 62→\t\t\t\t\"threadsPerCore\": 2,\n 63→ \"flopRateScalar\": {\n 64→ \"unit\": {\n 65→ \"prefix\": \"G\",\n 66→ \"base\": \"F/s\"\n 67→ },\n 68→ \"value\": 14\n 69→ },\n 70→ \"flopRateSimd\": {\n 71→ \"unit\": {\n 72→ \"prefix\": \"G\",\n 73→ \"base\": \"F/s\"\n 74→ },\n 75→ \"value\": 112\n 76→ },\n 77→ \"memoryBandwidth\": {\n 78→ \"unit\": {\n 79→ \"prefix\": \"G\",\n 80→ \"base\": \"B/s\"\n 81→ },\n 82→ \"value\": 24\n 83→ },\n 84→ \"numberOfNodes\": 70,\n 85→\t\t\t\t\"topology\": {\n 86→\t\t\t\t\t\"node\": [0, 1, 2, 3, 4, 5, 6, 7],\n 87→\t\t\t\t\t\"socket\": [[0, 1, 2, 3, 4, 5, 6, 7]],\n 88→\t\t\t\t\t\"memoryDomain\": [[0, 1, 2, 3, 4, 5, 6, 7]],\n 89→\t\t\t\t\t\"die\": [[0, 1, 2, 3, 4, 5, 6, 7]],\n 90→\t\t\t\t\t\"core\": [[0], [1], [2], [3], [4], [5], [6], [7]]\n 91→\t\t\t\t}\n 92→\t\t\t}\n 93→\t\t],\n 94→\t\t\"metricConfig\": [\n 95→\t\t\t{\n 96→\t\t\t\t\"name\": \"load_one\",\n 97→\t\t\t \"unit\": { \"base\": \"\"},\n 98→\t\t\t\t\"scope\": \"node\",\n 99→\t\t\t\t\"timestep\": 60,\n 100→ \"aggregation\": \"avg\","}]},"uuid":"0bf47521-e549-49eb-9018-3785afd0ffc8","timestamp":"2026-03-16T11:10:28.769Z"},"type":"agent_progress","prompt":"","agentId":"a379ecc75bfa5944a"},"toolUseID":"agent_msg_01E84TDzstrH6QPmN3FXDjnM","parentToolUseID":"toolu_01RfjwLRZ45KeNLSLxTFWg82","uuid":"a709de58-04d8-459d-aab2-9fe7c6d5bb9c","timestamp":"2026-03-16T11:10:28.770Z","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":"0b41d324-e8ef-4623-85d1-4914b3636fc6","isSidechain":false,"type":"progress","data":{"message":{"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01KDt8VuGdRpna2KxZg3Egux","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 web\n 7→\n 8→const configSchema = `{\n 9→ \"type\": \"object\",\n 10→ \"properties\": {\n 11→ \"job-list\": {\n 12→ \"description\": \"Job list defaults. 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":"08a7491f-1651-43e3-9c4e-67245e2079fe","isSidechain":false,"type":"progress","data":{"message":{"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01S7J9SnMDaD62ueEVWN4w8u","type":"tool_result","content":"/Users/jan/prg/ClusterCockpit/cc-backend/internal/config/config.go:\tSubjectJobEvent string `json:\"subject-job-event\"`\n/Users/jan/prg/ClusterCockpit/cc-backend/internal/config/config.go:\tSubjectNodeState string `json:\"subject-node-state\"`\n/Users/jan/prg/ClusterCockpit/cc-backend/internal/config/config.go:\tJobConcurrency int `json:\"job-concurrency\"`\n/Users/jan/prg/ClusterCockpit/cc-backend/internal/config/config.go:\tNodeConcurrency int `json:\"node-concurrency\"`\n/Users/jan/prg/ClusterCockpit/cc-backend/internal/config/schema.go: \"subject-job-event\": {\n/Users/jan/prg/ClusterCockpit/cc-backend/internal/config/schema.go: \"subject-node-state\": {\n/Users/jan/prg/ClusterCockpit/cc-backend/internal/config/schema.go: \"required\": [\"subject-job-event\", \"subject-node-state\"]\n/Users/jan/prg/ClusterCockpit/cc-backend/ReleaseNotes.md: \"subject-job-event\": \"cc.job.event\",\n/Users/jan/prg/ClusterCockpit/cc-backend/ReleaseNotes.md: \"subject-node-state\": \"cc.node.state\"\n/Users/jan/prg/ClusterCockpit/cc-backend/configs/config.json: \"subject-job-event\": \"cc.job.event\",\n/Users/jan/prg/ClusterCockpit/cc-backend/configs/config.json: \"subject-node-state\": \"cc.node.state\"","is_error":false}]},"uuid":"c2803d6a-a40c-49c0-8c1b-015877474533","timestamp":"2026-03-16T11:10:38.897Z"},"type":"agent_progress","prompt":"","agentId":"a379ecc75bfa5944a"},"toolUseID":"agent_msg_01E84TDzstrH6QPmN3FXDjnM","parentToolUseID":"toolu_01RfjwLRZ45KeNLSLxTFWg82","uuid":"300c776a-3874-4ee0-836d-91cbb0fd7c4a","timestamp":"2026-03-16T11:10:38.897Z","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":"300c776a-3874-4ee0-836d-91cbb0fd7c4a","isSidechain":false,"type":"progress","data":{"type":"hook_progress","hookEvent":"PostToolUse","hookName":"PostToolUse:Agent","command":"entire hooks claude-code post-task"},"parentToolUseID":"toolu_01RfjwLRZ45KeNLSLxTFWg82","toolUseID":"toolu_01RfjwLRZ45KeNLSLxTFWg82","timestamp":"2026-03-16T11:10:48.986Z","uuid":"33001a36-8c20-4f43-8d58-fbfb1aaa7e6c","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":"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"}
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{"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"}
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{"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"}
{"parentUuid":"c22d8225-ff22-435f-a4bb-8c8e177e2b3c","isSidechain":false,"message":{"model":"claude-opus-4-6","id":"msg_01DSCCcEmpM1b1vtkHLxLQ24","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01KTmHjbUmCyxpn8yHTQG7KP","name":"Bash","input":{"command":"git diff internal/config/config.go","description":"Check config.go changes"},"caller":{"type":"direct"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":5282,"cache_read_input_tokens":40604,"output_tokens":215,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":5282,"ephemeral_5m_input_tokens":0},"inference_geo":"","iterations":[],"speed":"standard"}},"requestId":"req_011CZ6f59RN8hNbdny5h5wjn","type":"assistant","uuid":"52f11858-cc9d-4a71-9087-43505601cb8a","timestamp":"2026-03-16T11:10:59.194Z","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":"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 \"metric-store-external\": [\n {\n \"scope\": \"*\",\n \"url\": \"http://x.x.x.x:8082\",\n \"token\": \"MySecret\"\n },\n {\n \"scope\": \"fritz\",\n \"url\": \"http://x.x.x.x:8084\",\n \"token\": \"MySecret\"\n },\n {\n \"scope\": \"fritz-spr1tb\",\n \"url\": \"http://x.x.x.x:8083\",\n \"token\": \"MySecret\"\n },\n {\n \"scope\": \"alex\",\n \"url\": \"http://x.x.x.x:8084\",\n \"token\": \"MySecret\"\n }\n ],\n \"metric-store\": {\n \"checkpoints\": {\n \"directory\": \"./var/checkpoints\"\n },\n \"memory-cap\": 100,\n \"retention-in-memory\": \"24h\",\n \"cleanup\": {\n \"mode\": \"archive\",\n \"directory\": \"./var/archive\"\n },\n \"nats-subscriptions\": [\n {\n \"subscribe-to\": \"hpc-nats\",\n \"cluster-tag\": \"fritz\"\n },\n {\n \"subscribe-to\": \"hpc-nats\",\n \"cluster-tag\": \"alex\"\n }\n ]\n },\n \"ui-file\": \"ui-config.json\"\n}\n","numLines":98,"startLine":1,"totalLines":98}},"sourceToolAssistantUUID":"0139915b-0d93-4f05-b6e4-052051dc193f","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":"a0661faa-191f-486a-9a4a-b8be99853c0e","isSidechain":false,"message":{"model":"claude-opus-4-6","id":"msg_019KY1eKsv3b2JfvLJEm8tVL","type":"message","role":"assistant","content":[{"type":"text","text":"Now I have the full picture. I need to update:\n\n1. **JSON schema** (`schema.go`): Add `job-concurrency` and `node-concurrency` properties\n2. **Example config** (`configs/config.json`): Add the new fields to show them\n3. **CLAUDE.md**: Update the NATS section to document concurrency options and the health check behavior"}],"stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":1279,"cache_read_input_tokens":46267,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":1279},"output_tokens":1,"service_tier":"standard","inference_geo":"not_available"}},"requestId":"req_011CZ6f5wdjLA456fDj7ZHdY","type":"assistant","uuid":"3208ebeb-c4f8-4b7e-9e8b-ea318c46baed","timestamp":"2026-03-16T11:11:08.756Z","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 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","structuredPatch":[{"oldStart":121,"oldLines":6,"newStart":121,"newLines":14,"lines":[" \"subject-node-state\": {"," \"description\": \"NATS subject for node state updates\","," \"type\": \"string\"","+ },","+ \"job-concurrency\": {","+ \"description\": \"Number of concurrent worker goroutines for processing job events (default: 8).\",","+ \"type\": \"integer\"","+ },","+ \"node-concurrency\": {","+ \"description\": \"Number of concurrent worker goroutines for processing node state events (default: 2).\",","+ \"type\": \"integer\""," }"," },"," \"required\": [\"subject-job-event\", \"subject-node-state\"]"]}],"userModified":false,"replaceAll":false},"sourceToolAssistantUUID":"f30d01e1-d632-4eb6-8745-a8f6d93d1972","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":"608a9a84-43cb-40d2-8358-37d3c5e96bc8","isSidechain":false,"message":{"model":"claude-opus-4-6","id":"msg_01SKQJadqPJzHsTr4Pg2nbLa","type":"message","role":"assistant","content":[{"type":"text","text":"Now update the CLAUDE.md NATS documentation section."}],"stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":753,"cache_read_input_tokens":47546,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":753},"output_tokens":1,"service_tier":"standard","inference_geo":"not_available"}},"requestId":"req_011CZ6f6ZL4rhBZGSmHdQ16m","type":"assistant","uuid":"ff746823-61af-453e-991c-ca745ee86864","timestamp":"2026-03-16T11:11:16.695Z","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":"a853ac20-95e0-4770-b16e-78e8751675d0","isSidechain":false,"promptId":"424bb283-9622-4c78-ab8d-57d55b32d949","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01GNkWAAH9cZTMoX74eWbgc9","type":"tool_result","content":" 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":"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. Nodes default to `MonitoringStateFailed` if no health data is available.\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":151,"oldLines":9,"newStart":151,"newLines":11,"lines":[" ## Configuration"," "," - **config.json**: Main configuration (clusters, metric repositories, archive settings)","- - `main.apiSubjects`: NATS subject configuration (optional)","- - `subjectJobEvent`: Subject for job start/stop events (e.g., \"cc.job.event\")","- - `subjectNodeState`: Subject for node state updates (e.g., \"cc.node.state\")","+ - `main.api-subjects`: NATS subject configuration (optional)","+ - `subject-job-event`: Subject for job start/stop events (e.g., \"cc.job.event\")","+ - `subject-node-state`: Subject for node state updates (e.g., \"cc.node.state\")","+ - `job-concurrency`: Worker goroutines for job events (default: 8)","+ - `node-concurrency`: Worker goroutines for node state events (default: 2)"," - `nats`: NATS client connection configuration (optional)"," - `address`: NATS server address (e.g., \"nats://localhost:4222\")"," - `username`: Authentication username (optional)"]}],"userModified":false,"replaceAll":false},"sourceToolAssistantUUID":"c3ae819c-53f4-4110-9827-43365f41239f","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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