From 4bf1ea358dda2f7307b886f1b25106378d738bb9 Mon Sep 17 00:00:00 2001 From: Jan Eitzinger Date: Wed, 4 Mar 2026 10:38:10 +0100 Subject: [PATCH] Checkpoint: 2f9a4e1c2e87 Entire-Session: ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb Entire-Strategy: manual-commit Entire-Agent: Claude Code Ephemeral-branch: entire/84fda9c-e3b0c4 --- 2f/9a4e1c2e87/0/content_hash.txt | 1 + 2f/9a4e1c2e87/0/context.md | 20 ++++++ 2f/9a4e1c2e87/0/full.jsonl | 111 +++++++++++++++++++++++++++++++ 2f/9a4e1c2e87/0/metadata.json | 35 ++++++++++ 2f/9a4e1c2e87/0/prompt.txt | 109 ++++++++++++++++++++++++++++++ 2f/9a4e1c2e87/metadata.json | 31 +++++++++ 6 files changed, 307 insertions(+) create mode 100644 2f/9a4e1c2e87/0/content_hash.txt create mode 100644 2f/9a4e1c2e87/0/context.md create mode 100644 2f/9a4e1c2e87/0/full.jsonl create mode 100644 2f/9a4e1c2e87/0/metadata.json create mode 100644 2f/9a4e1c2e87/0/prompt.txt create mode 100644 2f/9a4e1c2e87/metadata.json diff --git a/2f/9a4e1c2e87/0/content_hash.txt b/2f/9a4e1c2e87/0/content_hash.txt new file mode 100644 index 00000000..923ec296 --- /dev/null +++ b/2f/9a4e1c2e87/0/content_hash.txt @@ -0,0 +1 @@ +sha256:81f61f4579fb5677ae6cbc710b72d221e2cf9639086755e742288e73b47d618a \ No newline at end of file diff --git a/2f/9a4e1c2e87/0/context.md b/2f/9a4e1c2e87/0/context.md new file mode 100644 index 00000000..c94d7cfc --- /dev/null +++ b/2f/9a4e1c2e87/0/context.md @@ -0,0 +1,20 @@ +# Session Context + +## User Prompts + +### Prompt 1 + +Implement the following plan: + +# Plan: Simplify Checkpoint and Cleanup Configuration + +## Context + +The metricstore checkpoint interval is always "12h" in practice and has no reason to be configurable. The cleanup interval for the "delete" mode already falls back to `retention-in-memory` when not set — this should be the fixed behavior for all modes. WAL is the preferred and more robust checkpoint format and should be the default instead of JSON. + +These changes reduce unnecessary configuration ... + +### Prompt 2 + +Make the checkpoints option also option also optional + diff --git a/2f/9a4e1c2e87/0/full.jsonl b/2f/9a4e1c2e87/0/full.jsonl new file mode 100644 index 00000000..6692428c --- /dev/null +++ b/2f/9a4e1c2e87/0/full.jsonl @@ -0,0 +1,111 @@ +{"type":"file-history-snapshot","messageId":"f9f69cd7-691d-46b4-9e30-43ffeabb85a6","snapshot":{"messageId":"f9f69cd7-691d-46b4-9e30-43ffeabb85a6","trackedFileBackups":{},"timestamp":"2026-03-04T09:25:30.352Z"},"isSnapshotUpdate":false} +{"parentUuid":null,"isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","type":"progress","data":{"type":"hook_progress","hookEvent":"SessionStart","hookName":"SessionStart:clear","command":"entire hooks claude-code session-start"},"parentToolUseID":"dba3816d-32c7-4e41-9b1d-b78943301474","toolUseID":"dba3816d-32c7-4e41-9b1d-b78943301474","timestamp":"2026-03-04T09:25:30.305Z","uuid":"be823170-786b-4dff-b59f-ae6008e84a1b"} +{"parentUuid":"be823170-786b-4dff-b59f-ae6008e84a1b","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","type":"user","message":{"role":"user","content":"Implement the following plan:\n\n# Plan: Simplify Checkpoint and Cleanup Configuration\n\n## Context\n\nThe metricstore checkpoint interval is always \"12h\" in practice and has no reason to be configurable. The cleanup interval for the \"delete\" mode already falls back to `retention-in-memory` when not set — this should be the fixed behavior for all modes. WAL is the preferred and more robust checkpoint format and should be the default instead of JSON.\n\nThese changes reduce unnecessary configuration surface, eliminate a required field from the schema, and make WAL the out-of-the-box format.\n\n---\n\n## Changes\n\n### 1. `pkg/metricstore/config.go`\n\n- Remove `Interval string` field from `Checkpoints` struct (with its `json:\"interval\"` tag)\n- Remove `Interval string` field from `Cleanup` struct (with its `json:\"interval\"` tag)\n- Change default `FileFormat` from `\"json\"` to `\"wal\"` in the `Keys` var\n- Update doc comments on both structs and the `Keys` hierarchy comment\n\n### 2. `pkg/metricstore/configSchema.go`\n\n- Remove `\"interval\"` property from the `checkpoints` object properties\n- Remove `\"interval\"` from `\"required\": [\"interval\"]` in checkpoints (make required empty or remove it)\n- Remove `\"interval\"` property from the `cleanup` object properties\n- Remove `\"interval\"` from the conditional `\"then\": { \"required\": [\"interval\", \"directory\"] }` → only `\"directory\"` remains required for archive mode\n- Update the `\"file-format\"` description to say default is `'wal'`\n\n### 3. `pkg/metricstore/checkpoint.go`\n\nReplace dynamic interval parsing with a hardcoded 12h constant:\n\n```go\n// Before\nd, err := time.ParseDuration(Keys.Checkpoints.Interval)\nif err != nil { cclog.Fatalf(...) }\nif d <= 0 { cclog.Warnf(...); return }\n\n// After\nconst checkpointInterval = 12 * time.Hour\nd := checkpointInterval\n```\n\nRemove the `err` variable and validation block. The `ticker` and rest of the function stay unchanged.\n\n### 4. `pkg/metricstore/archive.go`\n\nSimplify `CleanUp()` to always use `Keys.RetentionInMemory` as the interval:\n\n```go\n// Before\nfunc CleanUp(wg *sync.WaitGroup, ctx context.Context) {\n if Keys.Cleanup.Mode == \"archive\" {\n cleanUpWorker(wg, ctx, Keys.Cleanup.Interval, \"archiving\", Keys.Cleanup.RootDir, false)\n } else {\n if Keys.Cleanup.Interval == \"\" {\n Keys.Cleanup.Interval = Keys.RetentionInMemory\n }\n cleanUpWorker(wg, ctx, Keys.Cleanup.Interval, \"deleting\", \"\", true)\n }\n}\n\n// After\nfunc CleanUp(wg *sync.WaitGroup, ctx context.Context) {\n if Keys.Cleanup.Mode == \"archive\" {\n cleanUpWorker(wg, ctx, Keys.RetentionInMemory, \"archiving\", Keys.Cleanup.RootDir, false)\n } else {\n cleanUpWorker(wg, ctx, Keys.RetentionInMemory, \"deleting\", \"\", true)\n }\n}\n```\n\n### 5. `configs/config.json`\n\n- Remove `\"interval\": \"12h\"` from `checkpoints` section\n- Remove `\"interval\": \"48h\"` from `cleanup` section\n\n### 6. `configs/config-demo.json`\n\n- Remove `\"interval\": \"12h\"` from `checkpoints` section\n- Remove `\"file-format\": \"wal\"` from `checkpoints` section (now the default, no need to specify)\n\n---\n\n## Critical Files\n\n- `pkg/metricstore/config.go` — struct definitions and defaults\n- `pkg/metricstore/configSchema.go` — JSON schema for validation\n- `pkg/metricstore/checkpoint.go` — checkpoint worker (interval usage)\n- `pkg/metricstore/archive.go` — cleanup worker (interval usage)\n- `configs/config.json` — example production config\n- `configs/config-demo.json` — demo config\n\n---\n\n## Verification\n\n1. `go build ./...` — must compile without errors\n2. `go test ./pkg/metricstore/...` — existing tests must pass\n3. Verify JSON schema validation still accepts a config without `\"interval\"` in checkpoints/cleanup\n4. Verify that a config with the old `\"interval\"` field is silently ignored (Go JSON unmarshal ignores unknown fields — but here the field is removed from the struct, so it will be ignored)\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/e7e4183c-0858-4bcb-8163-764db66ef417.jsonl"},"uuid":"f9f69cd7-691d-46b4-9e30-43ffeabb85a6","timestamp":"2026-03-04T09:25:30.200Z","planContent":"# Plan: Simplify Checkpoint and Cleanup Configuration\n\n## Context\n\nThe metricstore checkpoint interval is always \"12h\" in practice and has no reason to be configurable. The cleanup interval for the \"delete\" mode already falls back to `retention-in-memory` when not set — this should be the fixed behavior for all modes. WAL is the preferred and more robust checkpoint format and should be the default instead of JSON.\n\nThese changes reduce unnecessary configuration surface, eliminate a required field from the schema, and make WAL the out-of-the-box format.\n\n---\n\n## Changes\n\n### 1. `pkg/metricstore/config.go`\n\n- Remove `Interval string` field from `Checkpoints` struct (with its `json:\"interval\"` tag)\n- Remove `Interval string` field from `Cleanup` struct (with its `json:\"interval\"` tag)\n- Change default `FileFormat` from `\"json\"` to `\"wal\"` in the `Keys` var\n- Update doc comments on both structs and the `Keys` hierarchy comment\n\n### 2. `pkg/metricstore/configSchema.go`\n\n- Remove `\"interval\"` property from the `checkpoints` object properties\n- Remove `\"interval\"` from `\"required\": [\"interval\"]` in checkpoints (make required empty or remove it)\n- Remove `\"interval\"` property from the `cleanup` object properties\n- Remove `\"interval\"` from the conditional `\"then\": { \"required\": [\"interval\", \"directory\"] }` → only `\"directory\"` remains required for archive mode\n- Update the `\"file-format\"` description to say default is `'wal'`\n\n### 3. `pkg/metricstore/checkpoint.go`\n\nReplace dynamic interval parsing with a hardcoded 12h constant:\n\n```go\n// Before\nd, err := time.ParseDuration(Keys.Checkpoints.Interval)\nif err != nil { cclog.Fatalf(...) }\nif d <= 0 { cclog.Warnf(...); return }\n\n// After\nconst checkpointInterval = 12 * time.Hour\nd := checkpointInterval\n```\n\nRemove the `err` variable and validation block. The `ticker` and rest of the function stay unchanged.\n\n### 4. `pkg/metricstore/archive.go`\n\nSimplify `CleanUp()` to always use `Keys.RetentionInMemory` as the interval:\n\n```go\n// Before\nfunc CleanUp(wg *sync.WaitGroup, ctx context.Context) {\n if Keys.Cleanup.Mode == \"archive\" {\n cleanUpWorker(wg, ctx, Keys.Cleanup.Interval, \"archiving\", Keys.Cleanup.RootDir, false)\n } else {\n if Keys.Cleanup.Interval == \"\" {\n Keys.Cleanup.Interval = Keys.RetentionInMemory\n }\n cleanUpWorker(wg, ctx, Keys.Cleanup.Interval, \"deleting\", \"\", true)\n }\n}\n\n// After\nfunc CleanUp(wg *sync.WaitGroup, ctx context.Context) {\n if Keys.Cleanup.Mode == \"archive\" {\n cleanUpWorker(wg, ctx, Keys.RetentionInMemory, \"archiving\", Keys.Cleanup.RootDir, false)\n } else {\n cleanUpWorker(wg, ctx, Keys.RetentionInMemory, \"deleting\", \"\", true)\n }\n}\n```\n\n### 5. `configs/config.json`\n\n- Remove `\"interval\": \"12h\"` from `checkpoints` section\n- Remove `\"interval\": \"48h\"` from `cleanup` section\n\n### 6. `configs/config-demo.json`\n\n- Remove `\"interval\": \"12h\"` from `checkpoints` section\n- Remove `\"file-format\": \"wal\"` from `checkpoints` section (now the default, no need to specify)\n\n---\n\n## Critical Files\n\n- `pkg/metricstore/config.go` — struct definitions and defaults\n- `pkg/metricstore/configSchema.go` — JSON schema for validation\n- `pkg/metricstore/checkpoint.go` — checkpoint worker (interval usage)\n- `pkg/metricstore/archive.go` — cleanup worker (interval usage)\n- `configs/config.json` — example production config\n- `configs/config-demo.json` — demo config\n\n---\n\n## Verification\n\n1. `go build ./...` — must compile without errors\n2. `go test ./pkg/metricstore/...` — existing tests must pass\n3. Verify JSON schema validation still accepts a config without `\"interval\"` in checkpoints/cleanup\n4. Verify that a config with the old `\"interval\"` field is silently ignored (Go JSON unmarshal ignores unknown fields — but here the field is removed from the struct, so it will be ignored)\n"} +{"parentUuid":"f9f69cd7-691d-46b4-9e30-43ffeabb85a6","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","message":{"model":"claude-sonnet-4-6","id":"msg_0162mYJDvkAyPFSD9cEsFf54","type":"message","role":"assistant","content":[{"type":"thinking","thinking":"Let me read the relevant files first to understand the current state before making changes.","signature":"EoMCCkYICxgCKkCjtuN6QvcVXEFGcj+Q4U0ABY4atSQi2r8RFbXWR0zDpvfCwP6M5aB9uk4pT6QtWcM2c9J1m2XUUXrFti0dLjlVEgzxNENEBaKuV8VUKrgaDPfFy/mfEoQlVNSOlCIwGjVslopA05Haf3Mq4uUpWvwgEoJebYUHOhN5edB57Rzjxu+lfuR7GFEAUmJfA04ZKmvW5cgYfl4WT566s6CJXEFcxj6VxwnEKJONyFWoQc83pdBl/LQ5m93Ge+GMnkupulHKlxlTUQqk289QMW+cEXQfFldUvuMDRGPvW2RS4Gk4iatxt8XpTUaPaARu3mIA17Zw6OLDBL9RKtcvyRgB"}],"stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":3,"cache_creation_input_tokens":4955,"cache_read_input_tokens":20138,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":4955},"output_tokens":7,"service_tier":"standard","inference_geo":"not_available"}},"requestId":"req_011CYhoL66TUwbSqjE74Nba8","type":"assistant","uuid":"fbd7f333-31c3-4cad-94c4-9a0d1f795a61","timestamp":"2026-03-04T09:25:32.833Z"} +{"parentUuid":"fbd7f333-31c3-4cad-94c4-9a0d1f795a61","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","message":{"model":"claude-sonnet-4-6","id":"msg_0162mYJDvkAyPFSD9cEsFf54","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01UrF1e7tenD98kgD6tnwgAk","name":"Read","input":{"file_path":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/config.go"},"caller":{"type":"direct"}}],"stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":3,"cache_creation_input_tokens":4955,"cache_read_input_tokens":20138,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":4955},"output_tokens":7,"service_tier":"standard","inference_geo":"not_available"}},"requestId":"req_011CYhoL66TUwbSqjE74Nba8","type":"assistant","uuid":"f9255c3b-498c-422f-b6d9-d8ad3152cdb4","timestamp":"2026-03-04T09:25:33.617Z"} +{"parentUuid":"f9255c3b-498c-422f-b6d9-d8ad3152cdb4","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","type":"progress","data":{"type":"hook_progress","hookEvent":"PostToolUse","hookName":"PostToolUse:Read","command":"callback"},"parentToolUseID":"toolu_01UrF1e7tenD98kgD6tnwgAk","toolUseID":"toolu_01UrF1e7tenD98kgD6tnwgAk","timestamp":"2026-03-04T09:25:33.644Z","uuid":"69aa2dea-9f84-450f-8cac-97e5cf3bf600"} +{"parentUuid":"f9255c3b-498c-422f-b6d9-d8ad3152cdb4","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01UrF1e7tenD98kgD6tnwgAk","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 metricstore provides config.go: Configuration structures and metric management.\n 7→//\n 8→// # Configuration Hierarchy\n 9→//\n 10→// The metricstore package uses nested configuration structures:\n 11→//\n 12→//\tMetricStoreConfig (Keys)\n 13→//\t├─ NumWorkers: Parallel checkpoint/archive workers\n 14→//\t├─ RetentionInMemory: How long to keep data in RAM\n 15→//\t├─ MemoryCap: Memory limit in bytes (triggers forceFree)\n 16→//\t├─ Checkpoints: Persistence configuration\n 17→//\t│ ├─ FileFormat: \"json\" or \"wal\"\n 18→//\t│ ├─ Interval: How often to save (e.g., \"1h\")\n 19→//\t│ └─ RootDir: Checkpoint storage path\n 20→//\t├─ Cleanup: Long-term storage configuration\n 21→//\t│ ├─ Interval: How often to delete/archive\n 22→//\t│ ├─ RootDir: Archive storage path\n 23→//\t│ └─ Mode: \"delete\" or \"archive\"\n 24→//\t├─ Debug: Development/debugging options\n 25→//\t└─ Subscriptions: NATS topic subscriptions for metric ingestion\n 26→//\n 27→// # Metric Configuration\n 28→//\n 29→// Each metric (e.g., \"cpu_load\", \"mem_used\") has a MetricConfig entry in the global\n 30→// Metrics map, defining:\n 31→//\n 32→// - Frequency: Measurement interval in seconds\n 33→// - Aggregation: How to combine values (sum/avg/none) when transforming scopes\n 34→// - offset: Internal index into Level.metrics slice (assigned during Init)\n 35→//\n 36→// # AggregationStrategy\n 37→//\n 38→// Determines how to combine metric values when aggregating from finer to coarser scopes:\n 39→//\n 40→// - NoAggregation: Do not combine (incompatible scopes)\n 41→// - SumAggregation: Add values (e.g., power consumption: core→socket)\n 42→// - AvgAggregation: Average values (e.g., temperature: core→socket)\n 43→package metricstore\n 44→\n 45→import (\n 46→\t\"fmt\"\n 47→\t\"time\"\n 48→\n 49→\t\"github.com/ClusterCockpit/cc-backend/pkg/archive\"\n 50→\tcclog \"github.com/ClusterCockpit/cc-lib/v2/ccLogger\"\n 51→\t\"github.com/ClusterCockpit/cc-lib/v2/schema\"\n 52→)\n 53→\n 54→const (\n 55→\tDefaultMaxWorkers = 10\n 56→\tDefaultBufferCapacity = 512\n 57→\tDefaultGCTriggerInterval = 100\n 58→\tDefaultMemoryUsageTrackerInterval = 1 * time.Hour\n 59→)\n 60→\n 61→// Checkpoints configures periodic persistence of in-memory metric data.\n 62→//\n 63→// Fields:\n 64→// - FileFormat: \"json\" (human-readable, periodic) or \"wal\" (binary snapshot + WAL, crash-safe)\n 65→// - Interval: Duration string (e.g., \"1h\", \"30m\") between checkpoint saves\n 66→// - RootDir: Filesystem path for checkpoint files (created if missing)\n 67→type Checkpoints struct {\n 68→\tFileFormat string `json:\"file-format\"`\n 69→\tInterval string `json:\"interval\"`\n 70→\tRootDir string `json:\"directory\"`\n 71→}\n 72→\n 73→// Debug provides development and profiling options.\n 74→//\n 75→// Fields:\n 76→// - DumpToFile: Path to dump checkpoint data for inspection (empty = disabled)\n 77→// - EnableGops: Enable gops agent for live runtime debugging (https://github.com/google/gops)\n 78→type Debug struct {\n 79→\tDumpToFile string `json:\"dump-to-file\"`\n 80→\tEnableGops bool `json:\"gops\"`\n 81→}\n 82→\n 83→// Archive configures long-term storage of old metric data.\n 84→//\n 85→// Data older than RetentionInMemory is archived to disk or deleted.\n 86→//\n 87→// Fields:\n 88→// - ArchiveInterval: Duration string (e.g., \"24h\") between archive operations\n 89→// - RootDir: Filesystem path for archived data (created if missing)\n 90→// - DeleteInstead: If true, delete old data instead of archiving (saves disk space)\n 91→type Cleanup struct {\n 92→\tInterval string `json:\"interval\"`\n 93→\tRootDir string `json:\"directory\"`\n 94→\tMode string `json:\"mode\"`\n 95→}\n 96→\n 97→// Subscriptions defines NATS topics to subscribe to for metric ingestion.\n 98→//\n 99→// Each subscription receives metrics via NATS messaging, enabling real-time\n 100→// data collection from compute nodes.\n 101→//\n 102→// Fields:\n 103→// - SubscribeTo: NATS subject/channel name (e.g., \"metrics.compute.*\")\n 104→// - ClusterTag: Default cluster name for metrics without cluster tag (optional)\n 105→type Subscriptions []struct {\n 106→\t// Channel name\n 107→\tSubscribeTo string `json:\"subscribe-to\"`\n 108→\n 109→\t// Allow lines without a cluster tag, use this as default, optional\n 110→\tClusterTag string `json:\"cluster-tag\"`\n 111→}\n 112→\n 113→// MetricStoreConfig defines the main configuration for the metricstore.\n 114→//\n 115→// Loaded from cc-backend's config.json \"metricstore\" section. Controls memory usage,\n 116→// persistence, archiving, and metric ingestion.\n 117→//\n 118→// Fields:\n 119→// - NumWorkers: Parallel workers for checkpoint/archive (0 = auto: min(NumCPU/2+1, 10))\n 120→// - RetentionInMemory: Duration string (e.g., \"48h\") for in-memory data retention\n 121→// - MemoryCap: Max bytes for buffer data (0 = unlimited); triggers forceFree when exceeded\n 122→// - Checkpoints: Periodic persistence configuration\n 123→// - Debug: Development/profiling options (nil = disabled)\n 124→// - Archive: Long-term storage configuration (nil = disabled)\n 125→// - Subscriptions: NATS topics for metric ingestion (nil = polling only)\n 126→type MetricStoreConfig struct {\n 127→\t// Number of concurrent workers for checkpoint and archive operations.\n 128→\t// If not set or 0, defaults to min(runtime.NumCPU()/2+1, 10)\n 129→\tNumWorkers int `json:\"num-workers\"`\n 130→\tRetentionInMemory string `json:\"retention-in-memory\"`\n 131→\tMemoryCap int `json:\"memory-cap\"`\n 132→\tCheckpoints Checkpoints `json:\"checkpoints\"`\n 133→\tDebug *Debug `json:\"debug\"`\n 134→\tCleanup *Cleanup `json:\"cleanup\"`\n 135→\tSubscriptions *Subscriptions `json:\"nats-subscriptions\"`\n 136→}\n 137→\n 138→// Keys is the global metricstore configuration instance.\n 139→//\n 140→// Initialized with defaults, then overwritten by cc-backend's config.json.\n 141→// Accessed by Init(), Checkpointing(), and other lifecycle functions.\n 142→var Keys MetricStoreConfig = MetricStoreConfig{\n 143→\tCheckpoints: Checkpoints{\n 144→\t\tFileFormat: \"json\",\n 145→\t\tRootDir: \"./var/checkpoints\",\n 146→\t},\n 147→\tCleanup: &Cleanup{\n 148→\t\tMode: \"delete\",\n 149→\t},\n 150→}\n 151→\n 152→// AggregationStrategy defines how to combine metric values across hierarchy levels.\n 153→//\n 154→// Used when transforming data from finer-grained scopes (e.g., core) to coarser scopes\n 155→// (e.g., socket). This is SPATIAL aggregation, not TEMPORAL (time-based) aggregation.\n 156→//\n 157→// Values:\n 158→// - NoAggregation: Do not aggregate (incompatible scopes or non-aggregatable metrics)\n 159→// - SumAggregation: Add values (e.g., power: sum core power → socket power)\n 160→// - AvgAggregation: Average values (e.g., temperature: average core temps → socket temp)\n 161→type AggregationStrategy int\n 162→\n 163→const (\n 164→\tNoAggregation AggregationStrategy = iota // Do not aggregate\n 165→\tSumAggregation // Sum values (e.g., power, energy)\n 166→\tAvgAggregation // Average values (e.g., temperature, utilization)\n 167→)\n 168→\n 169→// AssignAggregationStrategy parses a string into an AggregationStrategy value.\n 170→//\n 171→// Used when loading metric configurations from JSON/YAML files.\n 172→//\n 173→// Parameters:\n 174→// - str: \"sum\", \"avg\", or \"\" (empty string for NoAggregation)\n 175→//\n 176→// Returns:\n 177→// - AggregationStrategy: Parsed value\n 178→// - error: Non-nil if str is unrecognized\n 179→func AssignAggregationStrategy(str string) (AggregationStrategy, error) {\n 180→\tswitch str {\n 181→\tcase \"\":\n 182→\t\treturn NoAggregation, nil\n 183→\tcase \"sum\":\n 184→\t\treturn SumAggregation, nil\n 185→\tcase \"avg\":\n 186→\t\treturn AvgAggregation, nil\n 187→\tdefault:\n 188→\t\treturn NoAggregation, fmt.Errorf(\"[METRICSTORE]> unknown aggregation strategy: %s\", str)\n 189→\t}\n 190→}\n 191→\n 192→// MetricConfig defines configuration for a single metric type.\n 193→//\n 194→// Stored in the global Metrics map, keyed by metric name (e.g., \"cpu_load\").\n 195→//\n 196→// Fields:\n 197→// - Frequency: Measurement interval in seconds (e.g., 60 for 1-minute granularity)\n 198→// - Aggregation: How to combine values across hierarchy levels (sum/avg/none)\n 199→// - offset: Internal index into Level.metrics slice (assigned during Init)\n 200→type MetricConfig struct {\n 201→\t// Interval in seconds at which measurements are stored\n 202→\tFrequency int64\n 203→\n 204→\t// Can be 'sum', 'avg' or null. Describes how to aggregate metrics from the same timestep over the hierarchy.\n 205→\tAggregation AggregationStrategy\n 206→\n 207→\t// Private, used internally...\n 208→\toffset int\n 209→}\n 210→\n 211→func BuildMetricList() map[string]MetricConfig {\n 212→\tvar metrics map[string]MetricConfig = make(map[string]MetricConfig)\n 213→\n 214→\taddMetric := func(name string, metric MetricConfig) error {\n 215→\t\tif metrics == nil {\n 216→\t\t\tmetrics = make(map[string]MetricConfig, 0)\n 217→\t\t}\n 218→\n 219→\t\tif existingMetric, ok := metrics[name]; ok {\n 220→\t\t\tif existingMetric.Frequency != metric.Frequency {\n 221→\t\t\t\tif existingMetric.Frequency < metric.Frequency {\n 222→\t\t\t\t\texistingMetric.Frequency = metric.Frequency\n 223→\t\t\t\t\tmetrics[name] = existingMetric\n 224→\t\t\t\t}\n 225→\t\t\t}\n 226→\t\t} else {\n 227→\t\t\tmetrics[name] = metric\n 228→\t\t}\n 229→\n 230→\t\treturn nil\n 231→\t}\n 232→\n 233→\t// Helper function to add metric configuration\n 234→\taddMetricConfig := func(mc *schema.MetricConfig) {\n 235→\t\tagg, err := AssignAggregationStrategy(mc.Aggregation)\n 236→\t\tif err != nil {\n 237→\t\t\tcclog.Warnf(\"Could not find aggregation strategy for metric config '%s': %s\", mc.Name, err.Error())\n 238→\t\t}\n 239→\n 240→\t\taddMetric(mc.Name, MetricConfig{\n 241→\t\t\tFrequency: int64(mc.Timestep),\n 242→\t\t\tAggregation: agg,\n 243→\t\t})\n 244→\t}\n 245→\tfor _, c := range archive.Clusters {\n 246→\t\tfor _, mc := range c.MetricConfig {\n 247→\t\t\taddMetricConfig(mc)\n 248→\t\t}\n 249→\n 250→\t\tfor _, sc := range c.SubClusters {\n 251→\t\t\tfor _, mc := range sc.MetricConfig {\n 252→\t\t\t\taddMetricConfig(mc)\n 253→\t\t\t}\n 254→\t\t}\n 255→\t}\n 256→\n 257→\treturn metrics\n 258→}\n 259→\n\n\nWhenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.\n\n"}]},"uuid":"33ad3f3e-0133-4b52-aa46-3dd48218ae9b","timestamp":"2026-03-04T09:25:33.643Z","toolUseResult":{"type":"text","file":{"filePath":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/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 metricstore provides config.go: Configuration structures and metric management.\n//\n// # Configuration Hierarchy\n//\n// The metricstore package uses nested configuration structures:\n//\n//\tMetricStoreConfig (Keys)\n//\t├─ NumWorkers: Parallel checkpoint/archive workers\n//\t├─ RetentionInMemory: How long to keep data in RAM\n//\t├─ MemoryCap: Memory limit in bytes (triggers forceFree)\n//\t├─ Checkpoints: Persistence configuration\n//\t│ ├─ FileFormat: \"json\" or \"wal\"\n//\t│ ├─ Interval: How often to save (e.g., \"1h\")\n//\t│ └─ RootDir: Checkpoint storage path\n//\t├─ Cleanup: Long-term storage configuration\n//\t│ ├─ Interval: How often to delete/archive\n//\t│ ├─ RootDir: Archive storage path\n//\t│ └─ Mode: \"delete\" or \"archive\"\n//\t├─ Debug: Development/debugging options\n//\t└─ Subscriptions: NATS topic subscriptions for metric ingestion\n//\n// # Metric Configuration\n//\n// Each metric (e.g., \"cpu_load\", \"mem_used\") has a MetricConfig entry in the global\n// Metrics map, defining:\n//\n// - Frequency: Measurement interval in seconds\n// - Aggregation: How to combine values (sum/avg/none) when transforming scopes\n// - offset: Internal index into Level.metrics slice (assigned during Init)\n//\n// # AggregationStrategy\n//\n// Determines how to combine metric values when aggregating from finer to coarser scopes:\n//\n// - NoAggregation: Do not combine (incompatible scopes)\n// - SumAggregation: Add values (e.g., power consumption: core→socket)\n// - AvgAggregation: Average values (e.g., temperature: core→socket)\npackage metricstore\n\nimport (\n\t\"fmt\"\n\t\"time\"\n\n\t\"github.com/ClusterCockpit/cc-backend/pkg/archive\"\n\tcclog \"github.com/ClusterCockpit/cc-lib/v2/ccLogger\"\n\t\"github.com/ClusterCockpit/cc-lib/v2/schema\"\n)\n\nconst (\n\tDefaultMaxWorkers = 10\n\tDefaultBufferCapacity = 512\n\tDefaultGCTriggerInterval = 100\n\tDefaultMemoryUsageTrackerInterval = 1 * time.Hour\n)\n\n// Checkpoints configures periodic persistence of in-memory metric data.\n//\n// Fields:\n// - FileFormat: \"json\" (human-readable, periodic) or \"wal\" (binary snapshot + WAL, crash-safe)\n// - Interval: Duration string (e.g., \"1h\", \"30m\") between checkpoint saves\n// - RootDir: Filesystem path for checkpoint files (created if missing)\ntype Checkpoints struct {\n\tFileFormat string `json:\"file-format\"`\n\tInterval string `json:\"interval\"`\n\tRootDir string `json:\"directory\"`\n}\n\n// Debug provides development and profiling options.\n//\n// Fields:\n// - DumpToFile: Path to dump checkpoint data for inspection (empty = disabled)\n// - EnableGops: Enable gops agent for live runtime debugging (https://github.com/google/gops)\ntype Debug struct {\n\tDumpToFile string `json:\"dump-to-file\"`\n\tEnableGops bool `json:\"gops\"`\n}\n\n// Archive configures long-term storage of old metric data.\n//\n// Data older than RetentionInMemory is archived to disk or deleted.\n//\n// Fields:\n// - ArchiveInterval: Duration string (e.g., \"24h\") between archive operations\n// - RootDir: Filesystem path for archived data (created if missing)\n// - DeleteInstead: If true, delete old data instead of archiving (saves disk space)\ntype Cleanup struct {\n\tInterval string `json:\"interval\"`\n\tRootDir string `json:\"directory\"`\n\tMode string `json:\"mode\"`\n}\n\n// Subscriptions defines NATS topics to subscribe to for metric ingestion.\n//\n// Each subscription receives metrics via NATS messaging, enabling real-time\n// data collection from compute nodes.\n//\n// Fields:\n// - SubscribeTo: NATS subject/channel name (e.g., \"metrics.compute.*\")\n// - ClusterTag: Default cluster name for metrics without cluster tag (optional)\ntype Subscriptions []struct {\n\t// Channel name\n\tSubscribeTo string `json:\"subscribe-to\"`\n\n\t// Allow lines without a cluster tag, use this as default, optional\n\tClusterTag string `json:\"cluster-tag\"`\n}\n\n// MetricStoreConfig defines the main configuration for the metricstore.\n//\n// Loaded from cc-backend's config.json \"metricstore\" section. Controls memory usage,\n// persistence, archiving, and metric ingestion.\n//\n// Fields:\n// - NumWorkers: Parallel workers for checkpoint/archive (0 = auto: min(NumCPU/2+1, 10))\n// - RetentionInMemory: Duration string (e.g., \"48h\") for in-memory data retention\n// - MemoryCap: Max bytes for buffer data (0 = unlimited); triggers forceFree when exceeded\n// - Checkpoints: Periodic persistence configuration\n// - Debug: Development/profiling options (nil = disabled)\n// - Archive: Long-term storage configuration (nil = disabled)\n// - Subscriptions: NATS topics for metric ingestion (nil = polling only)\ntype MetricStoreConfig struct {\n\t// Number of concurrent workers for checkpoint and archive operations.\n\t// If not set or 0, defaults to min(runtime.NumCPU()/2+1, 10)\n\tNumWorkers int `json:\"num-workers\"`\n\tRetentionInMemory string `json:\"retention-in-memory\"`\n\tMemoryCap int `json:\"memory-cap\"`\n\tCheckpoints Checkpoints `json:\"checkpoints\"`\n\tDebug *Debug `json:\"debug\"`\n\tCleanup *Cleanup `json:\"cleanup\"`\n\tSubscriptions *Subscriptions `json:\"nats-subscriptions\"`\n}\n\n// Keys is the global metricstore configuration instance.\n//\n// Initialized with defaults, then overwritten by cc-backend's config.json.\n// Accessed by Init(), Checkpointing(), and other lifecycle functions.\nvar Keys MetricStoreConfig = MetricStoreConfig{\n\tCheckpoints: Checkpoints{\n\t\tFileFormat: \"json\",\n\t\tRootDir: \"./var/checkpoints\",\n\t},\n\tCleanup: &Cleanup{\n\t\tMode: \"delete\",\n\t},\n}\n\n// AggregationStrategy defines how to combine metric values across hierarchy levels.\n//\n// Used when transforming data from finer-grained scopes (e.g., core) to coarser scopes\n// (e.g., socket). This is SPATIAL aggregation, not TEMPORAL (time-based) aggregation.\n//\n// Values:\n// - NoAggregation: Do not aggregate (incompatible scopes or non-aggregatable metrics)\n// - SumAggregation: Add values (e.g., power: sum core power → socket power)\n// - AvgAggregation: Average values (e.g., temperature: average core temps → socket temp)\ntype AggregationStrategy int\n\nconst (\n\tNoAggregation AggregationStrategy = iota // Do not aggregate\n\tSumAggregation // Sum values (e.g., power, energy)\n\tAvgAggregation // Average values (e.g., temperature, utilization)\n)\n\n// AssignAggregationStrategy parses a string into an AggregationStrategy value.\n//\n// Used when loading metric configurations from JSON/YAML files.\n//\n// Parameters:\n// - str: \"sum\", \"avg\", or \"\" (empty string for NoAggregation)\n//\n// Returns:\n// - AggregationStrategy: Parsed value\n// - error: Non-nil if str is unrecognized\nfunc AssignAggregationStrategy(str string) (AggregationStrategy, error) {\n\tswitch str {\n\tcase \"\":\n\t\treturn NoAggregation, nil\n\tcase \"sum\":\n\t\treturn SumAggregation, nil\n\tcase \"avg\":\n\t\treturn AvgAggregation, nil\n\tdefault:\n\t\treturn NoAggregation, fmt.Errorf(\"[METRICSTORE]> unknown aggregation strategy: %s\", str)\n\t}\n}\n\n// MetricConfig defines configuration for a single metric type.\n//\n// Stored in the global Metrics map, keyed by metric name (e.g., \"cpu_load\").\n//\n// Fields:\n// - Frequency: Measurement interval in seconds (e.g., 60 for 1-minute granularity)\n// - Aggregation: How to combine values across hierarchy levels (sum/avg/none)\n// - offset: Internal index into Level.metrics slice (assigned during Init)\ntype MetricConfig struct {\n\t// Interval in seconds at which measurements are stored\n\tFrequency int64\n\n\t// Can be 'sum', 'avg' or null. Describes how to aggregate metrics from the same timestep over the hierarchy.\n\tAggregation AggregationStrategy\n\n\t// Private, used internally...\n\toffset int\n}\n\nfunc BuildMetricList() map[string]MetricConfig {\n\tvar metrics map[string]MetricConfig = make(map[string]MetricConfig)\n\n\taddMetric := func(name string, metric MetricConfig) error {\n\t\tif metrics == nil {\n\t\t\tmetrics = make(map[string]MetricConfig, 0)\n\t\t}\n\n\t\tif existingMetric, ok := metrics[name]; ok {\n\t\t\tif existingMetric.Frequency != metric.Frequency {\n\t\t\t\tif existingMetric.Frequency < metric.Frequency {\n\t\t\t\t\texistingMetric.Frequency = metric.Frequency\n\t\t\t\t\tmetrics[name] = existingMetric\n\t\t\t\t}\n\t\t\t}\n\t\t} else {\n\t\t\tmetrics[name] = metric\n\t\t}\n\n\t\treturn nil\n\t}\n\n\t// Helper function to add metric configuration\n\taddMetricConfig := func(mc *schema.MetricConfig) {\n\t\tagg, err := AssignAggregationStrategy(mc.Aggregation)\n\t\tif err != nil {\n\t\t\tcclog.Warnf(\"Could not find aggregation strategy for metric config '%s': %s\", mc.Name, err.Error())\n\t\t}\n\n\t\taddMetric(mc.Name, MetricConfig{\n\t\t\tFrequency: int64(mc.Timestep),\n\t\t\tAggregation: agg,\n\t\t})\n\t}\n\tfor _, c := range archive.Clusters {\n\t\tfor _, mc := range c.MetricConfig {\n\t\t\taddMetricConfig(mc)\n\t\t}\n\n\t\tfor _, sc := range c.SubClusters {\n\t\t\tfor _, mc := range sc.MetricConfig {\n\t\t\t\taddMetricConfig(mc)\n\t\t\t}\n\t\t}\n\t}\n\n\treturn metrics\n}\n","numLines":259,"startLine":1,"totalLines":259}},"sourceToolAssistantUUID":"f9255c3b-498c-422f-b6d9-d8ad3152cdb4"} +{"parentUuid":"33ad3f3e-0133-4b52-aa46-3dd48218ae9b","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","message":{"model":"claude-sonnet-4-6","id":"msg_0162mYJDvkAyPFSD9cEsFf54","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_017mn9V6AFfT7wce1seCz6Dp","name":"Read","input":{"file_path":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/checkpoint.go"},"caller":{"type":"direct"}}],"stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":3,"cache_creation_input_tokens":4955,"cache_read_input_tokens":20138,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":4955},"output_tokens":7,"service_tier":"standard","inference_geo":"not_available"}},"requestId":"req_011CYhoL66TUwbSqjE74Nba8","type":"assistant","uuid":"a1c60053-1bfe-403d-9ea1-12bdfdc1c9fb","timestamp":"2026-03-04T09:25:34.015Z"} +{"parentUuid":"a1c60053-1bfe-403d-9ea1-12bdfdc1c9fb","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","type":"progress","data":{"type":"hook_progress","hookEvent":"PostToolUse","hookName":"PostToolUse:Read","command":"callback"},"parentToolUseID":"toolu_017mn9V6AFfT7wce1seCz6Dp","toolUseID":"toolu_017mn9V6AFfT7wce1seCz6Dp","timestamp":"2026-03-04T09:25:34.023Z","uuid":"f9aaa13e-2551-40c0-8992-1503a9d9c640"} +{"parentUuid":"a1c60053-1bfe-403d-9ea1-12bdfdc1c9fb","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_017mn9V6AFfT7wce1seCz6Dp","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→// This file implements checkpoint persistence for the in-memory metric store.\n 7→//\n 8→// Checkpoints enable graceful restarts by periodically saving in-memory metric\n 9→// data to disk in JSON or binary format. The checkpoint system:\n 10→//\n 11→// Key Features:\n 12→// - Periodic background checkpointing via the Checkpointing() worker\n 13→// - Two format families: JSON (human-readable) and WAL+binary (compact, crash-safe)\n 14→// - Parallel checkpoint creation and loading using worker pools\n 15→// - Hierarchical file organization: checkpoint_dir/cluster/host/timestamp.{json|bin}\n 16→// - WAL file: checkpoint_dir/cluster/host/current.wal (append-only, per-entry)\n 17→// - Only saves unarchived data (archived data is already persisted elsewhere)\n 18→// - GC optimization during loading to prevent excessive heap growth\n 19→//\n 20→// Checkpoint Workflow:\n 21→// 1. Init() loads checkpoints within retention window at startup\n 22→// 2. Checkpointing() worker periodically saves new data\n 23→// 3. Shutdown() writes final checkpoint before exit\n 24→//\n 25→// File Organization:\n 26→//\n 27→//\tcheckpoints/\n 28→//\t cluster1/\n 29→//\t host001/\n 30→//\t 1234567890.json (JSON format: full subtree snapshot)\n 31→//\t 1234567890.bin (binary format: full subtree snapshot)\n 32→//\t current.wal (WAL format: append-only per-entry log)\n 33→//\t host002/\n 34→//\t ...\n 35→package metricstore\n 36→\n 37→import (\n 38→\t\"bufio\"\n 39→\t\"context\"\n 40→\t\"encoding/json\"\n 41→\t\"errors\"\n 42→\t\"fmt\"\n 43→\t\"io/fs\"\n 44→\t\"os\"\n 45→\t\"path\"\n 46→\t\"path/filepath\"\n 47→\t\"sort\"\n 48→\t\"strconv\"\n 49→\t\"strings\"\n 50→\t\"sync\"\n 51→\t\"sync/atomic\"\n 52→\t\"time\"\n 53→\n 54→\tcclog \"github.com/ClusterCockpit/cc-lib/v2/ccLogger\"\n 55→\t\"github.com/ClusterCockpit/cc-lib/v2/schema\"\n 56→)\n 57→\n 58→const (\n 59→\tCheckpointFilePerms = 0o644 // File permissions for checkpoint files\n 60→\tCheckpointDirPerms = 0o755 // Directory permissions for checkpoint directories\n 61→\tGCTriggerInterval = DefaultGCTriggerInterval // Interval for triggering GC during checkpoint loading\n 62→)\n 63→\n 64→// CheckpointMetrics represents metric data in a checkpoint file.\n 65→// Whenever the structure changes, update MarshalJSON as well!\n 66→type CheckpointMetrics struct {\n 67→\tData []schema.Float `json:\"data\"`\n 68→\tFrequency int64 `json:\"frequency\"`\n 69→\tStart int64 `json:\"start\"`\n 70→}\n 71→\n 72→// CheckpointFile represents the hierarchical structure of a checkpoint file.\n 73→// It mirrors the Level tree structure from the MemoryStore.\n 74→type CheckpointFile struct {\n 75→\tMetrics map[string]*CheckpointMetrics `json:\"metrics\"`\n 76→\tChildren map[string]*CheckpointFile `json:\"children\"`\n 77→\tFrom int64 `json:\"from\"`\n 78→\tTo int64 `json:\"to\"`\n 79→}\n 80→\n 81→// lastCheckpoint tracks the timestamp of the last checkpoint creation.\n 82→var (\n 83→\tlastCheckpoint time.Time\n 84→\tlastCheckpointMu sync.Mutex\n 85→)\n 86→\n 87→// Checkpointing starts a background worker that periodically saves metric data to disk.\n 88→//\n 89→// Format behaviour:\n 90→// - \"json\": Periodic checkpointing based on Keys.Checkpoints.Interval\n 91→// - \"wal\": Periodic binary snapshots + WAL rotation at Keys.Checkpoints.Interval\n 92→func Checkpointing(wg *sync.WaitGroup, ctx context.Context) {\n 93→\tlastCheckpointMu.Lock()\n 94→\tlastCheckpoint = time.Now()\n 95→\tlastCheckpointMu.Unlock()\n 96→\n 97→\tms := GetMemoryStore()\n 98→\n 99→\twg.Go(func() {\n 100→\n 101→\t\td, err := time.ParseDuration(Keys.Checkpoints.Interval)\n 102→\t\tif err != nil {\n 103→\t\t\tcclog.Fatalf(\"[METRICSTORE]> invalid checkpoint interval '%s': %s\", Keys.Checkpoints.Interval, err.Error())\n 104→\t\t}\n 105→\t\tif d <= 0 {\n 106→\t\t\tcclog.Warnf(\"[METRICSTORE]> checkpoint interval is zero or negative (%s), checkpointing disabled\", d)\n 107→\t\t\treturn\n 108→\t\t}\n 109→\n 110→\t\tticker := time.NewTicker(d)\n 111→\t\tdefer ticker.Stop()\n 112→\n 113→\t\tfor {\n 114→\t\t\tselect {\n 115→\t\t\tcase <-ctx.Done():\n 116→\t\t\t\treturn\n 117→\t\t\tcase <-ticker.C:\n 118→\t\t\t\tlastCheckpointMu.Lock()\n 119→\t\t\t\tfrom := lastCheckpoint\n 120→\t\t\t\tlastCheckpointMu.Unlock()\n 121→\n 122→\t\t\t\tnow := time.Now()\n 123→\t\t\t\tcclog.Infof(\"[METRICSTORE]> start checkpointing (starting at %s)...\", from.Format(time.RFC3339))\n 124→\n 125→\t\t\t\tif Keys.Checkpoints.FileFormat == \"wal\" {\n 126→\t\t\t\t\tn, hostDirs, err := ms.ToCheckpointWAL(Keys.Checkpoints.RootDir, from.Unix(), now.Unix())\n 127→\t\t\t\t\tif err != nil {\n 128→\t\t\t\t\t\tcclog.Errorf(\"[METRICSTORE]> binary checkpointing failed: %s\", err.Error())\n 129→\t\t\t\t\t} else {\n 130→\t\t\t\t\t\tcclog.Infof(\"[METRICSTORE]> done: %d binary snapshot files created\", n)\n 131→\t\t\t\t\t\tlastCheckpointMu.Lock()\n 132→\t\t\t\t\t\tlastCheckpoint = now\n 133→\t\t\t\t\t\tlastCheckpointMu.Unlock()\n 134→\t\t\t\t\t\t// Rotate WAL files for successfully checkpointed hosts.\n 135→\t\t\t\t\t\tRotateWALFiles(hostDirs)\n 136→\t\t\t\t\t}\n 137→\t\t\t\t} else {\n 138→\t\t\t\t\tn, err := ms.ToCheckpoint(Keys.Checkpoints.RootDir, from.Unix(), now.Unix())\n 139→\t\t\t\t\tif err != nil {\n 140→\t\t\t\t\t\tcclog.Errorf(\"[METRICSTORE]> checkpointing failed: %s\", err.Error())\n 141→\t\t\t\t\t} else {\n 142→\t\t\t\t\t\tcclog.Infof(\"[METRICSTORE]> done: %d checkpoint files created\", n)\n 143→\t\t\t\t\t\tlastCheckpointMu.Lock()\n 144→\t\t\t\t\t\tlastCheckpoint = now\n 145→\t\t\t\t\t\tlastCheckpointMu.Unlock()\n 146→\t\t\t\t\t}\n 147→\t\t\t\t}\n 148→\t\t\t}\n 149→\t\t}\n 150→\t})\n 151→}\n 152→\n 153→// MarshalJSON provides optimized JSON encoding for CheckpointMetrics.\n 154→//\n 155→// Since schema.Float has custom MarshalJSON, serializing []Float has significant overhead.\n 156→// This method manually constructs JSON to avoid allocations and interface conversions.\n 157→func (cm *CheckpointMetrics) MarshalJSON() ([]byte, error) {\n 158→\tbuf := make([]byte, 0, 128+len(cm.Data)*8)\n 159→\tbuf = append(buf, `{\"frequency\":`...)\n 160→\tbuf = strconv.AppendInt(buf, cm.Frequency, 10)\n 161→\tbuf = append(buf, `,\"start\":`...)\n 162→\tbuf = strconv.AppendInt(buf, cm.Start, 10)\n 163→\tbuf = append(buf, `,\"data\":[`...)\n 164→\tfor i, x := range cm.Data {\n 165→\t\tif i != 0 {\n 166→\t\t\tbuf = append(buf, ',')\n 167→\t\t}\n 168→\t\tif x.IsNaN() {\n 169→\t\t\tbuf = append(buf, `null`...)\n 170→\t\t} else {\n 171→\t\t\tbuf = strconv.AppendFloat(buf, float64(x), 'f', 1, 32)\n 172→\t\t}\n 173→\t}\n 174→\tbuf = append(buf, `]}`...)\n 175→\treturn buf, nil\n 176→}\n 177→\n 178→// ToCheckpoint writes metric data to checkpoint files in parallel (JSON format).\n 179→//\n 180→// Metrics at root and cluster levels are skipped. One file per host is created.\n 181→// Uses worker pool (Keys.NumWorkers) for parallel processing. Only locks one host\n 182→// at a time, allowing concurrent writes/reads to other hosts.\n 183→//\n 184→// Returns the number of checkpoint files created and any errors encountered.\n 185→func (m *MemoryStore) ToCheckpoint(dir string, from, to int64) (int, error) {\n 186→\t// Pre-calculate capacity by counting cluster/host pairs\n 187→\tm.root.lock.RLock()\n 188→\ttotalHosts := 0\n 189→\tfor _, l1 := range m.root.children {\n 190→\t\tl1.lock.RLock()\n 191→\t\ttotalHosts += len(l1.children)\n 192→\t\tl1.lock.RUnlock()\n 193→\t}\n 194→\tm.root.lock.RUnlock()\n 195→\n 196→\tlevels := make([]*Level, 0, totalHosts)\n 197→\tselectors := make([][]string, 0, totalHosts)\n 198→\n 199→\tm.root.lock.RLock()\n 200→\tfor sel1, l1 := range m.root.children {\n 201→\t\tl1.lock.RLock()\n 202→\t\tfor sel2, l2 := range l1.children {\n 203→\t\t\tlevels = append(levels, l2)\n 204→\t\t\tselectors = append(selectors, []string{sel1, sel2})\n 205→\t\t}\n 206→\t\tl1.lock.RUnlock()\n 207→\t}\n 208→\tm.root.lock.RUnlock()\n 209→\n 210→\ttype workItem struct {\n 211→\t\tlevel *Level\n 212→\t\tdir string\n 213→\t\tselector []string\n 214→\t}\n 215→\n 216→\tn, errs := int32(0), int32(0)\n 217→\n 218→\tvar wg sync.WaitGroup\n 219→\twg.Add(Keys.NumWorkers)\n 220→\twork := make(chan workItem, Keys.NumWorkers*2)\n 221→\tfor worker := 0; worker < Keys.NumWorkers; worker++ {\n 222→\t\tgo func() {\n 223→\t\t\tdefer wg.Done()\n 224→\n 225→\t\t\tfor workItem := range work {\n 226→\t\t\t\tif err := workItem.level.toCheckpoint(workItem.dir, from, to, m); err != nil {\n 227→\t\t\t\t\tif err == ErrNoNewArchiveData {\n 228→\t\t\t\t\t\tcontinue\n 229→\t\t\t\t\t}\n 230→\n 231→\t\t\t\t\tcclog.Errorf(\"[METRICSTORE]> error while checkpointing %#v: %s\", workItem.selector, err.Error())\n 232→\t\t\t\t\tatomic.AddInt32(&errs, 1)\n 233→\t\t\t\t} else {\n 234→\t\t\t\t\tatomic.AddInt32(&n, 1)\n 235→\t\t\t\t}\n 236→\t\t\t}\n 237→\t\t}()\n 238→\t}\n 239→\n 240→\tfor i := 0; i < len(levels); i++ {\n 241→\t\tdir := path.Join(dir, path.Join(selectors[i]...))\n 242→\t\twork <- workItem{\n 243→\t\t\tlevel: levels[i],\n 244→\t\t\tdir: dir,\n 245→\t\t\tselector: selectors[i],\n 246→\t\t}\n 247→\t}\n 248→\n 249→\tclose(work)\n 250→\twg.Wait()\n 251→\n 252→\tif errs > 0 {\n 253→\t\treturn int(n), fmt.Errorf(\"[METRICSTORE]> %d errors happened while creating checkpoints (%d successes)\", errs, n)\n 254→\t}\n 255→\treturn int(n), nil\n 256→}\n 257→\n 258→// toCheckpointFile recursively converts a Level tree to CheckpointFile structure.\n 259→// Skips metrics that are already archived. Returns nil if no unarchived data exists.\n 260→func (l *Level) toCheckpointFile(from, to int64, m *MemoryStore) (*CheckpointFile, error) {\n 261→\tl.lock.RLock()\n 262→\tdefer l.lock.RUnlock()\n 263→\n 264→\tretval := &CheckpointFile{\n 265→\t\tFrom: from,\n 266→\t\tTo: to,\n 267→\t\tMetrics: make(map[string]*CheckpointMetrics),\n 268→\t\tChildren: make(map[string]*CheckpointFile),\n 269→\t}\n 270→\n 271→\tfor metric, minfo := range m.Metrics {\n 272→\t\tb := l.metrics[minfo.offset]\n 273→\t\tif b == nil {\n 274→\t\t\tcontinue\n 275→\t\t}\n 276→\n 277→\t\tallArchived := true\n 278→\t\tb.iterFromTo(from, to, func(b *buffer) error {\n 279→\t\t\tif !b.archived {\n 280→\t\t\t\tallArchived = false\n 281→\t\t\t\treturn fmt.Errorf(\"stop\") // Early termination signal\n 282→\t\t\t}\n 283→\t\t\treturn nil\n 284→\t\t})\n 285→\n 286→\t\tif allArchived {\n 287→\t\t\tcontinue\n 288→\t\t}\n 289→\n 290→\t\tdata := make([]schema.Float, (to-from)/b.frequency+1)\n 291→\t\tdata, start, end, err := b.read(from, to, data)\n 292→\t\tif err != nil {\n 293→\t\t\treturn nil, err\n 294→\t\t}\n 295→\n 296→\t\tfor i := int((end - start) / b.frequency); i < len(data); i++ {\n 297→\t\t\tdata[i] = schema.NaN\n 298→\t\t}\n 299→\n 300→\t\tretval.Metrics[metric] = &CheckpointMetrics{\n 301→\t\t\tFrequency: b.frequency,\n 302→\t\t\tStart: start,\n 303→\t\t\tData: data,\n 304→\t\t}\n 305→\t}\n 306→\n 307→\tfor name, child := range l.children {\n 308→\t\tval, err := child.toCheckpointFile(from, to, m)\n 309→\t\tif err != nil {\n 310→\t\t\treturn nil, err\n 311→\t\t}\n 312→\n 313→\t\tif val != nil {\n 314→\t\t\tretval.Children[name] = val\n 315→\t\t}\n 316→\t}\n 317→\n 318→\tif len(retval.Children) == 0 && len(retval.Metrics) == 0 {\n 319→\t\treturn nil, nil\n 320→\t}\n 321→\n 322→\treturn retval, nil\n 323→}\n 324→\n 325→// toCheckpoint writes a Level's data to a JSON checkpoint file.\n 326→// Creates directory if needed. Returns ErrNoNewArchiveData if nothing to save.\n 327→func (l *Level) toCheckpoint(dir string, from, to int64, m *MemoryStore) error {\n 328→\tcf, err := l.toCheckpointFile(from, to, m)\n 329→\tif err != nil {\n 330→\t\treturn err\n 331→\t}\n 332→\n 333→\tif cf == nil {\n 334→\t\treturn ErrNoNewArchiveData\n 335→\t}\n 336→\n 337→\tfilepath := path.Join(dir, fmt.Sprintf(\"%d.json\", from))\n 338→\tf, err := os.OpenFile(filepath, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, CheckpointFilePerms)\n 339→\tif err != nil && os.IsNotExist(err) {\n 340→\t\terr = os.MkdirAll(dir, CheckpointDirPerms)\n 341→\t\tif err == nil {\n 342→\t\t\tf, err = os.OpenFile(filepath, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, CheckpointFilePerms)\n 343→\t\t}\n 344→\t}\n 345→\tif err != nil {\n 346→\t\treturn err\n 347→\t}\n 348→\tdefer f.Close()\n 349→\n 350→\tbw := bufio.NewWriter(f)\n 351→\tif err = json.NewEncoder(bw).Encode(cf); err != nil {\n 352→\t\treturn err\n 353→\t}\n 354→\n 355→\treturn bw.Flush()\n 356→}\n 357→\n 358→// enqueueCheckpointHosts traverses checkpoint directory and enqueues cluster/host pairs.\n 359→// Returns error if directory structure is invalid.\n 360→func enqueueCheckpointHosts(dir string, work chan<- [2]string) error {\n 361→\tclustersDir, err := os.ReadDir(dir)\n 362→\tif err != nil {\n 363→\t\treturn err\n 364→\t}\n 365→\n 366→\tfor _, clusterDir := range clustersDir {\n 367→\t\tif !clusterDir.IsDir() {\n 368→\t\t\treturn errors.New(\"[METRICSTORE]> expected only directories at first level of checkpoints/ directory\")\n 369→\t\t}\n 370→\n 371→\t\thostsDir, err := os.ReadDir(filepath.Join(dir, clusterDir.Name()))\n 372→\t\tif err != nil {\n 373→\t\t\treturn err\n 374→\t\t}\n 375→\n 376→\t\tfor _, hostDir := range hostsDir {\n 377→\t\t\tif !hostDir.IsDir() {\n 378→\t\t\t\treturn errors.New(\"[METRICSTORE]> expected only directories at second level of checkpoints/ directory\")\n 379→\t\t\t}\n 380→\n 381→\t\t\twork <- [2]string{clusterDir.Name(), hostDir.Name()}\n 382→\t\t}\n 383→\t}\n 384→\n 385→\treturn nil\n 386→}\n 387→\n 388→// FromCheckpoint loads checkpoint files from disk into memory in parallel.\n 389→//\n 390→// Uses worker pool to load cluster/host combinations. Returns number of files\n 391→// loaded and any errors.\n 392→func (m *MemoryStore) FromCheckpoint(dir string, from int64) (int, error) {\n 393→\tvar wg sync.WaitGroup\n 394→\twork := make(chan [2]string, Keys.NumWorkers*4)\n 395→\tn, errs := int32(0), int32(0)\n 396→\n 397→\twg.Add(Keys.NumWorkers)\n 398→\tfor worker := 0; worker < Keys.NumWorkers; worker++ {\n 399→\t\tgo func() {\n 400→\t\t\tdefer wg.Done()\n 401→\t\t\tfor host := range work {\n 402→\t\t\t\tlvl := m.root.findLevelOrCreate(host[:], len(m.Metrics))\n 403→\t\t\t\tnn, err := lvl.fromCheckpoint(m, filepath.Join(dir, host[0], host[1]), from)\n 404→\t\t\t\tif err != nil {\n 405→\t\t\t\t\tcclog.Errorf(\"[METRICSTORE]> error while loading checkpoints for %s/%s: %s\", host[0], host[1], err.Error())\n 406→\t\t\t\t\tatomic.AddInt32(&errs, 1)\n 407→\t\t\t\t}\n 408→\t\t\t\tatomic.AddInt32(&n, int32(nn))\n 409→\t\t\t}\n 410→\t\t}()\n 411→\t}\n 412→\n 413→\terr := enqueueCheckpointHosts(dir, work)\n 414→\tclose(work)\n 415→\twg.Wait()\n 416→\n 417→\tif err != nil {\n 418→\t\treturn int(n), err\n 419→\t}\n 420→\n 421→\tif errs > 0 {\n 422→\t\treturn int(n), fmt.Errorf(\"[METRICSTORE]> %d errors happened while creating checkpoints (%d successes)\", errs, n)\n 423→\t}\n 424→\treturn int(n), nil\n 425→}\n 426→\n 427→// FromCheckpointFiles is the main entry point for loading checkpoints at startup.\n 428→//\n 429→// Creates checkpoint directory if it doesn't exist. This function must be called\n 430→// before any writes or reads, and can only be called once.\n 431→func (m *MemoryStore) FromCheckpointFiles(dir string, from int64) (int, error) {\n 432→\tif _, err := os.Stat(dir); os.IsNotExist(err) {\n 433→\t\terr := os.MkdirAll(dir, CheckpointDirPerms)\n 434→\t\tif err != nil {\n 435→\t\t\tcclog.Fatalf(\"[METRICSTORE]> Error creating directory: %#v\\n\", err)\n 436→\t\t}\n 437→\t\tcclog.Debugf(\"[METRICSTORE]> %#v Directory created successfully\", dir)\n 438→\t}\n 439→\n 440→\treturn m.FromCheckpoint(dir, from)\n 441→}\n 442→\n 443→func (l *Level) loadJSONFile(m *MemoryStore, f *os.File, from int64) error {\n 444→\tbr := bufio.NewReader(f)\n 445→\tcf := &CheckpointFile{}\n 446→\tif err := json.NewDecoder(br).Decode(cf); err != nil {\n 447→\t\treturn err\n 448→\t}\n 449→\n 450→\tif cf.To != 0 && cf.To < from {\n 451→\t\treturn nil\n 452→\t}\n 453→\n 454→\tif err := l.loadFile(cf, m); err != nil {\n 455→\t\treturn err\n 456→\t}\n 457→\n 458→\treturn nil\n 459→}\n 460→\n 461→func (l *Level) loadFile(cf *CheckpointFile, m *MemoryStore) error {\n 462→\tfor name, metric := range cf.Metrics {\n 463→\t\tn := len(metric.Data)\n 464→\t\tb := &buffer{\n 465→\t\t\tfrequency: metric.Frequency,\n 466→\t\t\tstart: metric.Start,\n 467→\t\t\tdata: metric.Data[0:n:n],\n 468→\t\t\tprev: nil,\n 469→\t\t\tnext: nil,\n 470→\t\t\tarchived: true,\n 471→\t\t}\n 472→\n 473→\t\tminfo, ok := m.Metrics[name]\n 474→\t\tif !ok {\n 475→\t\t\tcontinue\n 476→\t\t}\n 477→\n 478→\t\tprev := l.metrics[minfo.offset]\n 479→\t\tif prev == nil {\n 480→\t\t\tl.metrics[minfo.offset] = b\n 481→\t\t} else {\n 482→\t\t\tif prev.start > b.start {\n 483→\t\t\t\treturn fmt.Errorf(\"[METRICSTORE]> buffer start time %d is before previous buffer start %d\", b.start, prev.start)\n 484→\t\t\t}\n 485→\n 486→\t\t\tb.prev = prev\n 487→\t\t\tprev.next = b\n 488→\t\t}\n 489→\t\tl.metrics[minfo.offset] = b\n 490→\t}\n 491→\n 492→\tif len(cf.Children) > 0 && l.children == nil {\n 493→\t\tl.children = make(map[string]*Level)\n 494→\t}\n 495→\n 496→\tfor sel, childCf := range cf.Children {\n 497→\t\tchild, ok := l.children[sel]\n 498→\t\tif !ok {\n 499→\t\t\tchild = &Level{\n 500→\t\t\t\tmetrics: make([]*buffer, len(m.Metrics)),\n 501→\t\t\t\tchildren: nil,\n 502→\t\t\t}\n 503→\t\t\tl.children[sel] = child\n 504→\t\t}\n 505→\n 506→\t\tif err := child.loadFile(childCf, m); err != nil {\n 507→\t\t\treturn err\n 508→\t\t}\n 509→\t}\n 510→\n 511→\treturn nil\n 512→}\n 513→\n 514→// fromCheckpoint loads all checkpoint files (JSON, binary snapshot, WAL) for a\n 515→// single host directory. Snapshot files are loaded first (sorted by timestamp),\n 516→// then current.wal is replayed on top.\n 517→func (l *Level) fromCheckpoint(m *MemoryStore, dir string, from int64) (int, error) {\n 518→\tdirentries, err := os.ReadDir(dir)\n 519→\tif err != nil {\n 520→\t\tif os.IsNotExist(err) {\n 521→\t\t\treturn 0, nil\n 522→\t\t}\n 523→\t\treturn 0, err\n 524→\t}\n 525→\n 526→\tallFiles := make([]fs.DirEntry, 0)\n 527→\tvar walEntry fs.DirEntry\n 528→\tfilesLoaded := 0\n 529→\n 530→\tfor _, e := range direntries {\n 531→\t\tif e.IsDir() {\n 532→\t\t\t// Legacy: skip subdirectories (only used by old Avro format).\n 533→\t\t\t// These are ignored; their data is not loaded.\n 534→\t\t\tcclog.Debugf(\"[METRICSTORE]> skipping subdirectory %s in checkpoint dir %s\", e.Name(), dir)\n 535→\t\t\tcontinue\n 536→\t\t}\n 537→\n 538→\t\tname := e.Name()\n 539→\t\tif strings.HasSuffix(name, \".json\") || strings.HasSuffix(name, \".bin\") {\n 540→\t\t\tallFiles = append(allFiles, e)\n 541→\t\t} else if name == \"current.wal\" {\n 542→\t\t\twalEntry = e\n 543→\t\t}\n 544→\t\t// Silently ignore other files (e.g., .tmp, .bin.tmp from interrupted writes).\n 545→\t}\n 546→\n 547→\tfiles, err := findFiles(allFiles, from, true)\n 548→\tif err != nil {\n 549→\t\treturn filesLoaded, err\n 550→\t}\n 551→\n 552→\tloaders := map[string]func(*MemoryStore, *os.File, int64) error{\n 553→\t\t\".json\": l.loadJSONFile,\n 554→\t\t\".bin\": l.loadBinaryFile,\n 555→\t}\n 556→\n 557→\tfor _, filename := range files {\n 558→\t\text := filepath.Ext(filename)\n 559→\t\tloader := loaders[ext]\n 560→\t\tif loader == nil {\n 561→\t\t\tcclog.Warnf(\"[METRICSTORE]> unknown extension for checkpoint file %s\", filename)\n 562→\t\t\tcontinue\n 563→\t\t}\n 564→\n 565→\t\terr := func() error {\n 566→\t\t\tf, err := os.Open(path.Join(dir, filename))\n 567→\t\t\tif err != nil {\n 568→\t\t\t\treturn err\n 569→\t\t\t}\n 570→\t\t\tdefer f.Close()\n 571→\t\t\treturn loader(m, f, from)\n 572→\t\t}()\n 573→\t\tif err != nil {\n 574→\t\t\treturn filesLoaded, err\n 575→\t\t}\n 576→\t\tfilesLoaded++\n 577→\t}\n 578→\n 579→\t// Replay WAL after all snapshot files so it fills in data since the last snapshot.\n 580→\tif walEntry != nil {\n 581→\t\terr := func() error {\n 582→\t\t\tf, err := os.Open(path.Join(dir, walEntry.Name()))\n 583→\t\t\tif err != nil {\n 584→\t\t\t\treturn err\n 585→\t\t\t}\n 586→\t\t\tdefer f.Close()\n 587→\t\t\treturn l.loadWALFile(m, f, from)\n 588→\t\t}()\n 589→\t\tif err != nil {\n 590→\t\t\t// WAL errors are non-fatal: the snapshot already loaded the bulk of data.\n 591→\t\t\tcclog.Warnf(\"[METRICSTORE]> WAL replay error for %s: %v (data since last snapshot may be missing)\", dir, err)\n 592→\t\t} else {\n 593→\t\t\tfilesLoaded++\n 594→\t\t}\n 595→\t}\n 596→\n 597→\treturn filesLoaded, nil\n 598→}\n 599→\n 600→// parseTimestampFromFilename extracts a Unix timestamp from a checkpoint filename.\n 601→// Supports \".json\" (format: \".json\") and \".bin\" (format: \".bin\").\n 602→func parseTimestampFromFilename(name string) (int64, error) {\n 603→\tswitch {\n 604→\tcase strings.HasSuffix(name, \".json\"):\n 605→\t\treturn strconv.ParseInt(name[:len(name)-5], 10, 64)\n 606→\tcase strings.HasSuffix(name, \".bin\"):\n 607→\t\treturn strconv.ParseInt(name[:len(name)-4], 10, 64)\n 608→\tdefault:\n 609→\t\treturn 0, fmt.Errorf(\"unknown checkpoint extension for file %q\", name)\n 610→\t}\n 611→}\n 612→\n 613→// findFiles returns filenames from direntries whose timestamps satisfy the filter.\n 614→// If findMoreRecentFiles is true, returns files with timestamps >= t (plus the\n 615→// last file before t if t falls between two files).\n 616→func findFiles(direntries []fs.DirEntry, t int64, findMoreRecentFiles bool) ([]string, error) {\n 617→\tnums := map[string]int64{}\n 618→\tfor _, e := range direntries {\n 619→\t\tname := e.Name()\n 620→\t\tif !strings.HasSuffix(name, \".json\") && !strings.HasSuffix(name, \".bin\") {\n 621→\t\t\tcontinue\n 622→\t\t}\n 623→\n 624→\t\tts, err := parseTimestampFromFilename(name)\n 625→\t\tif err != nil {\n 626→\t\t\treturn nil, err\n 627→\t\t}\n 628→\t\tnums[name] = ts\n 629→\t}\n 630→\n 631→\tsort.Slice(direntries, func(i, j int) bool {\n 632→\t\ta, b := direntries[i], direntries[j]\n 633→\t\treturn nums[a.Name()] < nums[b.Name()]\n 634→\t})\n 635→\n 636→\tif len(nums) == 0 {\n 637→\t\treturn nil, nil\n 638→\t}\n 639→\n 640→\tfilenames := make([]string, 0)\n 641→\n 642→\tfor i, e := range direntries {\n 643→\t\tts1 := nums[e.Name()]\n 644→\n 645→\t\tif findMoreRecentFiles && t <= ts1 {\n 646→\t\t\tfilenames = append(filenames, e.Name())\n 647→\t\t} else if !findMoreRecentFiles && ts1 <= t && ts1 != 0 {\n 648→\t\t\tfilenames = append(filenames, e.Name())\n 649→\t\t}\n 650→\n 651→\t\tif i == len(direntries)-1 {\n 652→\t\t\tcontinue\n 653→\t\t}\n 654→\n 655→\t\tenext := direntries[i+1]\n 656→\t\tts2 := nums[enext.Name()]\n 657→\n 658→\t\tif findMoreRecentFiles {\n 659→\t\t\tif ts1 < t && t < ts2 {\n 660→\t\t\t\tfilenames = append(filenames, e.Name())\n 661→\t\t\t}\n 662→\t\t}\n 663→\t}\n 664→\n 665→\treturn filenames, nil\n 666→}\n 667→\n\n\nWhenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.\n\n"}]},"uuid":"d7246e51-f2cb-40da-8c08-7529727bf572","timestamp":"2026-03-04T09:25:34.023Z","toolUseResult":{"type":"text","file":{"filePath":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/checkpoint.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// This file implements checkpoint persistence for the in-memory metric store.\n//\n// Checkpoints enable graceful restarts by periodically saving in-memory metric\n// data to disk in JSON or binary format. The checkpoint system:\n//\n// Key Features:\n// - Periodic background checkpointing via the Checkpointing() worker\n// - Two format families: JSON (human-readable) and WAL+binary (compact, crash-safe)\n// - Parallel checkpoint creation and loading using worker pools\n// - Hierarchical file organization: checkpoint_dir/cluster/host/timestamp.{json|bin}\n// - WAL file: checkpoint_dir/cluster/host/current.wal (append-only, per-entry)\n// - Only saves unarchived data (archived data is already persisted elsewhere)\n// - GC optimization during loading to prevent excessive heap growth\n//\n// Checkpoint Workflow:\n// 1. Init() loads checkpoints within retention window at startup\n// 2. Checkpointing() worker periodically saves new data\n// 3. Shutdown() writes final checkpoint before exit\n//\n// File Organization:\n//\n//\tcheckpoints/\n//\t cluster1/\n//\t host001/\n//\t 1234567890.json (JSON format: full subtree snapshot)\n//\t 1234567890.bin (binary format: full subtree snapshot)\n//\t current.wal (WAL format: append-only per-entry log)\n//\t host002/\n//\t ...\npackage metricstore\n\nimport (\n\t\"bufio\"\n\t\"context\"\n\t\"encoding/json\"\n\t\"errors\"\n\t\"fmt\"\n\t\"io/fs\"\n\t\"os\"\n\t\"path\"\n\t\"path/filepath\"\n\t\"sort\"\n\t\"strconv\"\n\t\"strings\"\n\t\"sync\"\n\t\"sync/atomic\"\n\t\"time\"\n\n\tcclog \"github.com/ClusterCockpit/cc-lib/v2/ccLogger\"\n\t\"github.com/ClusterCockpit/cc-lib/v2/schema\"\n)\n\nconst (\n\tCheckpointFilePerms = 0o644 // File permissions for checkpoint files\n\tCheckpointDirPerms = 0o755 // Directory permissions for checkpoint directories\n\tGCTriggerInterval = DefaultGCTriggerInterval // Interval for triggering GC during checkpoint loading\n)\n\n// CheckpointMetrics represents metric data in a checkpoint file.\n// Whenever the structure changes, update MarshalJSON as well!\ntype CheckpointMetrics struct {\n\tData []schema.Float `json:\"data\"`\n\tFrequency int64 `json:\"frequency\"`\n\tStart int64 `json:\"start\"`\n}\n\n// CheckpointFile represents the hierarchical structure of a checkpoint file.\n// It mirrors the Level tree structure from the MemoryStore.\ntype CheckpointFile struct {\n\tMetrics map[string]*CheckpointMetrics `json:\"metrics\"`\n\tChildren map[string]*CheckpointFile `json:\"children\"`\n\tFrom int64 `json:\"from\"`\n\tTo int64 `json:\"to\"`\n}\n\n// lastCheckpoint tracks the timestamp of the last checkpoint creation.\nvar (\n\tlastCheckpoint time.Time\n\tlastCheckpointMu sync.Mutex\n)\n\n// Checkpointing starts a background worker that periodically saves metric data to disk.\n//\n// Format behaviour:\n// - \"json\": Periodic checkpointing based on Keys.Checkpoints.Interval\n// - \"wal\": Periodic binary snapshots + WAL rotation at Keys.Checkpoints.Interval\nfunc Checkpointing(wg *sync.WaitGroup, ctx context.Context) {\n\tlastCheckpointMu.Lock()\n\tlastCheckpoint = time.Now()\n\tlastCheckpointMu.Unlock()\n\n\tms := GetMemoryStore()\n\n\twg.Go(func() {\n\n\t\td, err := time.ParseDuration(Keys.Checkpoints.Interval)\n\t\tif err != nil {\n\t\t\tcclog.Fatalf(\"[METRICSTORE]> invalid checkpoint interval '%s': %s\", Keys.Checkpoints.Interval, err.Error())\n\t\t}\n\t\tif d <= 0 {\n\t\t\tcclog.Warnf(\"[METRICSTORE]> checkpoint interval is zero or negative (%s), checkpointing disabled\", d)\n\t\t\treturn\n\t\t}\n\n\t\tticker := time.NewTicker(d)\n\t\tdefer ticker.Stop()\n\n\t\tfor {\n\t\t\tselect {\n\t\t\tcase <-ctx.Done():\n\t\t\t\treturn\n\t\t\tcase <-ticker.C:\n\t\t\t\tlastCheckpointMu.Lock()\n\t\t\t\tfrom := lastCheckpoint\n\t\t\t\tlastCheckpointMu.Unlock()\n\n\t\t\t\tnow := time.Now()\n\t\t\t\tcclog.Infof(\"[METRICSTORE]> start checkpointing (starting at %s)...\", from.Format(time.RFC3339))\n\n\t\t\t\tif Keys.Checkpoints.FileFormat == \"wal\" {\n\t\t\t\t\tn, hostDirs, err := ms.ToCheckpointWAL(Keys.Checkpoints.RootDir, from.Unix(), now.Unix())\n\t\t\t\t\tif err != nil {\n\t\t\t\t\t\tcclog.Errorf(\"[METRICSTORE]> binary checkpointing failed: %s\", err.Error())\n\t\t\t\t\t} else {\n\t\t\t\t\t\tcclog.Infof(\"[METRICSTORE]> done: %d binary snapshot files created\", n)\n\t\t\t\t\t\tlastCheckpointMu.Lock()\n\t\t\t\t\t\tlastCheckpoint = now\n\t\t\t\t\t\tlastCheckpointMu.Unlock()\n\t\t\t\t\t\t// Rotate WAL files for successfully checkpointed hosts.\n\t\t\t\t\t\tRotateWALFiles(hostDirs)\n\t\t\t\t\t}\n\t\t\t\t} else {\n\t\t\t\t\tn, err := ms.ToCheckpoint(Keys.Checkpoints.RootDir, from.Unix(), now.Unix())\n\t\t\t\t\tif err != nil {\n\t\t\t\t\t\tcclog.Errorf(\"[METRICSTORE]> checkpointing failed: %s\", err.Error())\n\t\t\t\t\t} else {\n\t\t\t\t\t\tcclog.Infof(\"[METRICSTORE]> done: %d checkpoint files created\", n)\n\t\t\t\t\t\tlastCheckpointMu.Lock()\n\t\t\t\t\t\tlastCheckpoint = now\n\t\t\t\t\t\tlastCheckpointMu.Unlock()\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t})\n}\n\n// MarshalJSON provides optimized JSON encoding for CheckpointMetrics.\n//\n// Since schema.Float has custom MarshalJSON, serializing []Float has significant overhead.\n// This method manually constructs JSON to avoid allocations and interface conversions.\nfunc (cm *CheckpointMetrics) MarshalJSON() ([]byte, error) {\n\tbuf := make([]byte, 0, 128+len(cm.Data)*8)\n\tbuf = append(buf, `{\"frequency\":`...)\n\tbuf = strconv.AppendInt(buf, cm.Frequency, 10)\n\tbuf = append(buf, `,\"start\":`...)\n\tbuf = strconv.AppendInt(buf, cm.Start, 10)\n\tbuf = append(buf, `,\"data\":[`...)\n\tfor i, x := range cm.Data {\n\t\tif i != 0 {\n\t\t\tbuf = append(buf, ',')\n\t\t}\n\t\tif x.IsNaN() {\n\t\t\tbuf = append(buf, `null`...)\n\t\t} else {\n\t\t\tbuf = strconv.AppendFloat(buf, float64(x), 'f', 1, 32)\n\t\t}\n\t}\n\tbuf = append(buf, `]}`...)\n\treturn buf, nil\n}\n\n// ToCheckpoint writes metric data to checkpoint files in parallel (JSON format).\n//\n// Metrics at root and cluster levels are skipped. One file per host is created.\n// Uses worker pool (Keys.NumWorkers) for parallel processing. Only locks one host\n// at a time, allowing concurrent writes/reads to other hosts.\n//\n// Returns the number of checkpoint files created and any errors encountered.\nfunc (m *MemoryStore) ToCheckpoint(dir string, from, to int64) (int, error) {\n\t// Pre-calculate capacity by counting cluster/host pairs\n\tm.root.lock.RLock()\n\ttotalHosts := 0\n\tfor _, l1 := range m.root.children {\n\t\tl1.lock.RLock()\n\t\ttotalHosts += len(l1.children)\n\t\tl1.lock.RUnlock()\n\t}\n\tm.root.lock.RUnlock()\n\n\tlevels := make([]*Level, 0, totalHosts)\n\tselectors := make([][]string, 0, totalHosts)\n\n\tm.root.lock.RLock()\n\tfor sel1, l1 := range m.root.children {\n\t\tl1.lock.RLock()\n\t\tfor sel2, l2 := range l1.children {\n\t\t\tlevels = append(levels, l2)\n\t\t\tselectors = append(selectors, []string{sel1, sel2})\n\t\t}\n\t\tl1.lock.RUnlock()\n\t}\n\tm.root.lock.RUnlock()\n\n\ttype workItem struct {\n\t\tlevel *Level\n\t\tdir string\n\t\tselector []string\n\t}\n\n\tn, errs := int32(0), int32(0)\n\n\tvar wg sync.WaitGroup\n\twg.Add(Keys.NumWorkers)\n\twork := make(chan workItem, Keys.NumWorkers*2)\n\tfor worker := 0; worker < Keys.NumWorkers; worker++ {\n\t\tgo func() {\n\t\t\tdefer wg.Done()\n\n\t\t\tfor workItem := range work {\n\t\t\t\tif err := workItem.level.toCheckpoint(workItem.dir, from, to, m); err != nil {\n\t\t\t\t\tif err == ErrNoNewArchiveData {\n\t\t\t\t\t\tcontinue\n\t\t\t\t\t}\n\n\t\t\t\t\tcclog.Errorf(\"[METRICSTORE]> error while checkpointing %#v: %s\", workItem.selector, err.Error())\n\t\t\t\t\tatomic.AddInt32(&errs, 1)\n\t\t\t\t} else {\n\t\t\t\t\tatomic.AddInt32(&n, 1)\n\t\t\t\t}\n\t\t\t}\n\t\t}()\n\t}\n\n\tfor i := 0; i < len(levels); i++ {\n\t\tdir := path.Join(dir, path.Join(selectors[i]...))\n\t\twork <- workItem{\n\t\t\tlevel: levels[i],\n\t\t\tdir: dir,\n\t\t\tselector: selectors[i],\n\t\t}\n\t}\n\n\tclose(work)\n\twg.Wait()\n\n\tif errs > 0 {\n\t\treturn int(n), fmt.Errorf(\"[METRICSTORE]> %d errors happened while creating checkpoints (%d successes)\", errs, n)\n\t}\n\treturn int(n), nil\n}\n\n// toCheckpointFile recursively converts a Level tree to CheckpointFile structure.\n// Skips metrics that are already archived. Returns nil if no unarchived data exists.\nfunc (l *Level) toCheckpointFile(from, to int64, m *MemoryStore) (*CheckpointFile, error) {\n\tl.lock.RLock()\n\tdefer l.lock.RUnlock()\n\n\tretval := &CheckpointFile{\n\t\tFrom: from,\n\t\tTo: to,\n\t\tMetrics: make(map[string]*CheckpointMetrics),\n\t\tChildren: make(map[string]*CheckpointFile),\n\t}\n\n\tfor metric, minfo := range m.Metrics {\n\t\tb := l.metrics[minfo.offset]\n\t\tif b == nil {\n\t\t\tcontinue\n\t\t}\n\n\t\tallArchived := true\n\t\tb.iterFromTo(from, to, func(b *buffer) error {\n\t\t\tif !b.archived {\n\t\t\t\tallArchived = false\n\t\t\t\treturn fmt.Errorf(\"stop\") // Early termination signal\n\t\t\t}\n\t\t\treturn nil\n\t\t})\n\n\t\tif allArchived {\n\t\t\tcontinue\n\t\t}\n\n\t\tdata := make([]schema.Float, (to-from)/b.frequency+1)\n\t\tdata, start, end, err := b.read(from, to, data)\n\t\tif err != nil {\n\t\t\treturn nil, err\n\t\t}\n\n\t\tfor i := int((end - start) / b.frequency); i < len(data); i++ {\n\t\t\tdata[i] = schema.NaN\n\t\t}\n\n\t\tretval.Metrics[metric] = &CheckpointMetrics{\n\t\t\tFrequency: b.frequency,\n\t\t\tStart: start,\n\t\t\tData: data,\n\t\t}\n\t}\n\n\tfor name, child := range l.children {\n\t\tval, err := child.toCheckpointFile(from, to, m)\n\t\tif err != nil {\n\t\t\treturn nil, err\n\t\t}\n\n\t\tif val != nil {\n\t\t\tretval.Children[name] = val\n\t\t}\n\t}\n\n\tif len(retval.Children) == 0 && len(retval.Metrics) == 0 {\n\t\treturn nil, nil\n\t}\n\n\treturn retval, nil\n}\n\n// toCheckpoint writes a Level's data to a JSON checkpoint file.\n// Creates directory if needed. Returns ErrNoNewArchiveData if nothing to save.\nfunc (l *Level) toCheckpoint(dir string, from, to int64, m *MemoryStore) error {\n\tcf, err := l.toCheckpointFile(from, to, m)\n\tif err != nil {\n\t\treturn err\n\t}\n\n\tif cf == nil {\n\t\treturn ErrNoNewArchiveData\n\t}\n\n\tfilepath := path.Join(dir, fmt.Sprintf(\"%d.json\", from))\n\tf, err := os.OpenFile(filepath, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, CheckpointFilePerms)\n\tif err != nil && os.IsNotExist(err) {\n\t\terr = os.MkdirAll(dir, CheckpointDirPerms)\n\t\tif err == nil {\n\t\t\tf, err = os.OpenFile(filepath, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, CheckpointFilePerms)\n\t\t}\n\t}\n\tif err != nil {\n\t\treturn err\n\t}\n\tdefer f.Close()\n\n\tbw := bufio.NewWriter(f)\n\tif err = json.NewEncoder(bw).Encode(cf); err != nil {\n\t\treturn err\n\t}\n\n\treturn bw.Flush()\n}\n\n// enqueueCheckpointHosts traverses checkpoint directory and enqueues cluster/host pairs.\n// Returns error if directory structure is invalid.\nfunc enqueueCheckpointHosts(dir string, work chan<- [2]string) error {\n\tclustersDir, err := os.ReadDir(dir)\n\tif err != nil {\n\t\treturn err\n\t}\n\n\tfor _, clusterDir := range clustersDir {\n\t\tif !clusterDir.IsDir() {\n\t\t\treturn errors.New(\"[METRICSTORE]> expected only directories at first level of checkpoints/ directory\")\n\t\t}\n\n\t\thostsDir, err := os.ReadDir(filepath.Join(dir, clusterDir.Name()))\n\t\tif err != nil {\n\t\t\treturn err\n\t\t}\n\n\t\tfor _, hostDir := range hostsDir {\n\t\t\tif !hostDir.IsDir() {\n\t\t\t\treturn errors.New(\"[METRICSTORE]> expected only directories at second level of checkpoints/ directory\")\n\t\t\t}\n\n\t\t\twork <- [2]string{clusterDir.Name(), hostDir.Name()}\n\t\t}\n\t}\n\n\treturn nil\n}\n\n// FromCheckpoint loads checkpoint files from disk into memory in parallel.\n//\n// Uses worker pool to load cluster/host combinations. Returns number of files\n// loaded and any errors.\nfunc (m *MemoryStore) FromCheckpoint(dir string, from int64) (int, error) {\n\tvar wg sync.WaitGroup\n\twork := make(chan [2]string, Keys.NumWorkers*4)\n\tn, errs := int32(0), int32(0)\n\n\twg.Add(Keys.NumWorkers)\n\tfor worker := 0; worker < Keys.NumWorkers; worker++ {\n\t\tgo func() {\n\t\t\tdefer wg.Done()\n\t\t\tfor host := range work {\n\t\t\t\tlvl := m.root.findLevelOrCreate(host[:], len(m.Metrics))\n\t\t\t\tnn, err := lvl.fromCheckpoint(m, filepath.Join(dir, host[0], host[1]), from)\n\t\t\t\tif err != nil {\n\t\t\t\t\tcclog.Errorf(\"[METRICSTORE]> error while loading checkpoints for %s/%s: %s\", host[0], host[1], err.Error())\n\t\t\t\t\tatomic.AddInt32(&errs, 1)\n\t\t\t\t}\n\t\t\t\tatomic.AddInt32(&n, int32(nn))\n\t\t\t}\n\t\t}()\n\t}\n\n\terr := enqueueCheckpointHosts(dir, work)\n\tclose(work)\n\twg.Wait()\n\n\tif err != nil {\n\t\treturn int(n), err\n\t}\n\n\tif errs > 0 {\n\t\treturn int(n), fmt.Errorf(\"[METRICSTORE]> %d errors happened while creating checkpoints (%d successes)\", errs, n)\n\t}\n\treturn int(n), nil\n}\n\n// FromCheckpointFiles is the main entry point for loading checkpoints at startup.\n//\n// Creates checkpoint directory if it doesn't exist. This function must be called\n// before any writes or reads, and can only be called once.\nfunc (m *MemoryStore) FromCheckpointFiles(dir string, from int64) (int, error) {\n\tif _, err := os.Stat(dir); os.IsNotExist(err) {\n\t\terr := os.MkdirAll(dir, CheckpointDirPerms)\n\t\tif err != nil {\n\t\t\tcclog.Fatalf(\"[METRICSTORE]> Error creating directory: %#v\\n\", err)\n\t\t}\n\t\tcclog.Debugf(\"[METRICSTORE]> %#v Directory created successfully\", dir)\n\t}\n\n\treturn m.FromCheckpoint(dir, from)\n}\n\nfunc (l *Level) loadJSONFile(m *MemoryStore, f *os.File, from int64) error {\n\tbr := bufio.NewReader(f)\n\tcf := &CheckpointFile{}\n\tif err := json.NewDecoder(br).Decode(cf); err != nil {\n\t\treturn err\n\t}\n\n\tif cf.To != 0 && cf.To < from {\n\t\treturn nil\n\t}\n\n\tif err := l.loadFile(cf, m); err != nil {\n\t\treturn err\n\t}\n\n\treturn nil\n}\n\nfunc (l *Level) loadFile(cf *CheckpointFile, m *MemoryStore) error {\n\tfor name, metric := range cf.Metrics {\n\t\tn := len(metric.Data)\n\t\tb := &buffer{\n\t\t\tfrequency: metric.Frequency,\n\t\t\tstart: metric.Start,\n\t\t\tdata: metric.Data[0:n:n],\n\t\t\tprev: nil,\n\t\t\tnext: nil,\n\t\t\tarchived: true,\n\t\t}\n\n\t\tminfo, ok := m.Metrics[name]\n\t\tif !ok {\n\t\t\tcontinue\n\t\t}\n\n\t\tprev := l.metrics[minfo.offset]\n\t\tif prev == nil {\n\t\t\tl.metrics[minfo.offset] = b\n\t\t} else {\n\t\t\tif prev.start > b.start {\n\t\t\t\treturn fmt.Errorf(\"[METRICSTORE]> buffer start time %d is before previous buffer start %d\", b.start, prev.start)\n\t\t\t}\n\n\t\t\tb.prev = prev\n\t\t\tprev.next = b\n\t\t}\n\t\tl.metrics[minfo.offset] = b\n\t}\n\n\tif len(cf.Children) > 0 && l.children == nil {\n\t\tl.children = make(map[string]*Level)\n\t}\n\n\tfor sel, childCf := range cf.Children {\n\t\tchild, ok := l.children[sel]\n\t\tif !ok {\n\t\t\tchild = &Level{\n\t\t\t\tmetrics: make([]*buffer, len(m.Metrics)),\n\t\t\t\tchildren: nil,\n\t\t\t}\n\t\t\tl.children[sel] = child\n\t\t}\n\n\t\tif err := child.loadFile(childCf, m); err != nil {\n\t\t\treturn err\n\t\t}\n\t}\n\n\treturn nil\n}\n\n// fromCheckpoint loads all checkpoint files (JSON, binary snapshot, WAL) for a\n// single host directory. Snapshot files are loaded first (sorted by timestamp),\n// then current.wal is replayed on top.\nfunc (l *Level) fromCheckpoint(m *MemoryStore, dir string, from int64) (int, error) {\n\tdirentries, err := os.ReadDir(dir)\n\tif err != nil {\n\t\tif os.IsNotExist(err) {\n\t\t\treturn 0, nil\n\t\t}\n\t\treturn 0, err\n\t}\n\n\tallFiles := make([]fs.DirEntry, 0)\n\tvar walEntry fs.DirEntry\n\tfilesLoaded := 0\n\n\tfor _, e := range direntries {\n\t\tif e.IsDir() {\n\t\t\t// Legacy: skip subdirectories (only used by old Avro format).\n\t\t\t// These are ignored; their data is not loaded.\n\t\t\tcclog.Debugf(\"[METRICSTORE]> skipping subdirectory %s in checkpoint dir %s\", e.Name(), dir)\n\t\t\tcontinue\n\t\t}\n\n\t\tname := e.Name()\n\t\tif strings.HasSuffix(name, \".json\") || strings.HasSuffix(name, \".bin\") {\n\t\t\tallFiles = append(allFiles, e)\n\t\t} else if name == \"current.wal\" {\n\t\t\twalEntry = e\n\t\t}\n\t\t// Silently ignore other files (e.g., .tmp, .bin.tmp from interrupted writes).\n\t}\n\n\tfiles, err := findFiles(allFiles, from, true)\n\tif err != nil {\n\t\treturn filesLoaded, err\n\t}\n\n\tloaders := map[string]func(*MemoryStore, *os.File, int64) error{\n\t\t\".json\": l.loadJSONFile,\n\t\t\".bin\": l.loadBinaryFile,\n\t}\n\n\tfor _, filename := range files {\n\t\text := filepath.Ext(filename)\n\t\tloader := loaders[ext]\n\t\tif loader == nil {\n\t\t\tcclog.Warnf(\"[METRICSTORE]> unknown extension for checkpoint file %s\", filename)\n\t\t\tcontinue\n\t\t}\n\n\t\terr := func() error {\n\t\t\tf, err := os.Open(path.Join(dir, filename))\n\t\t\tif err != nil {\n\t\t\t\treturn err\n\t\t\t}\n\t\t\tdefer f.Close()\n\t\t\treturn loader(m, f, from)\n\t\t}()\n\t\tif err != nil {\n\t\t\treturn filesLoaded, err\n\t\t}\n\t\tfilesLoaded++\n\t}\n\n\t// Replay WAL after all snapshot files so it fills in data since the last snapshot.\n\tif walEntry != nil {\n\t\terr := func() error {\n\t\t\tf, err := os.Open(path.Join(dir, walEntry.Name()))\n\t\t\tif err != nil {\n\t\t\t\treturn err\n\t\t\t}\n\t\t\tdefer f.Close()\n\t\t\treturn l.loadWALFile(m, f, from)\n\t\t}()\n\t\tif err != nil {\n\t\t\t// WAL errors are non-fatal: the snapshot already loaded the bulk of data.\n\t\t\tcclog.Warnf(\"[METRICSTORE]> WAL replay error for %s: %v (data since last snapshot may be missing)\", dir, err)\n\t\t} else {\n\t\t\tfilesLoaded++\n\t\t}\n\t}\n\n\treturn filesLoaded, nil\n}\n\n// parseTimestampFromFilename extracts a Unix timestamp from a checkpoint filename.\n// Supports \".json\" (format: \".json\") and \".bin\" (format: \".bin\").\nfunc parseTimestampFromFilename(name string) (int64, error) {\n\tswitch {\n\tcase strings.HasSuffix(name, \".json\"):\n\t\treturn strconv.ParseInt(name[:len(name)-5], 10, 64)\n\tcase strings.HasSuffix(name, \".bin\"):\n\t\treturn strconv.ParseInt(name[:len(name)-4], 10, 64)\n\tdefault:\n\t\treturn 0, fmt.Errorf(\"unknown checkpoint extension for file %q\", name)\n\t}\n}\n\n// findFiles returns filenames from direntries whose timestamps satisfy the filter.\n// If findMoreRecentFiles is true, returns files with timestamps >= t (plus the\n// last file before t if t falls between two files).\nfunc findFiles(direntries []fs.DirEntry, t int64, findMoreRecentFiles bool) ([]string, error) {\n\tnums := map[string]int64{}\n\tfor _, e := range direntries {\n\t\tname := e.Name()\n\t\tif !strings.HasSuffix(name, \".json\") && !strings.HasSuffix(name, \".bin\") {\n\t\t\tcontinue\n\t\t}\n\n\t\tts, err := parseTimestampFromFilename(name)\n\t\tif err != nil {\n\t\t\treturn nil, err\n\t\t}\n\t\tnums[name] = ts\n\t}\n\n\tsort.Slice(direntries, func(i, j int) bool {\n\t\ta, b := direntries[i], direntries[j]\n\t\treturn nums[a.Name()] < nums[b.Name()]\n\t})\n\n\tif len(nums) == 0 {\n\t\treturn nil, nil\n\t}\n\n\tfilenames := make([]string, 0)\n\n\tfor i, e := range direntries {\n\t\tts1 := nums[e.Name()]\n\n\t\tif findMoreRecentFiles && t <= ts1 {\n\t\t\tfilenames = append(filenames, e.Name())\n\t\t} else if !findMoreRecentFiles && ts1 <= t && ts1 != 0 {\n\t\t\tfilenames = append(filenames, e.Name())\n\t\t}\n\n\t\tif i == len(direntries)-1 {\n\t\t\tcontinue\n\t\t}\n\n\t\tenext := direntries[i+1]\n\t\tts2 := nums[enext.Name()]\n\n\t\tif findMoreRecentFiles {\n\t\t\tif ts1 < t && t < ts2 {\n\t\t\t\tfilenames = append(filenames, e.Name())\n\t\t\t}\n\t\t}\n\t}\n\n\treturn filenames, nil\n}\n","numLines":667,"startLine":1,"totalLines":667}},"sourceToolAssistantUUID":"a1c60053-1bfe-403d-9ea1-12bdfdc1c9fb"} 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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 metricstore\n 7→\n 8→import (\n 9→\t\"context\"\n 10→\t\"errors\"\n 11→\t\"fmt\"\n 12→\t\"os\"\n 13→\t\"path/filepath\"\n 14→\t\"sync\"\n 15→\t\"sync/atomic\"\n 16→\t\"time\"\n 17→\n 18→\tcclog \"github.com/ClusterCockpit/cc-lib/v2/ccLogger\"\n 19→)\n 20→\n 21→// Worker for either Archiving or Deleting files\n 22→\n 23→func CleanUp(wg *sync.WaitGroup, ctx context.Context) {\n 24→\tif Keys.Cleanup.Mode == \"archive\" {\n 25→\t\t// Run as Archiver\n 26→\t\tcleanUpWorker(wg, ctx,\n 27→\t\t\tKeys.Cleanup.Interval,\n 28→\t\t\t\"archiving\",\n 29→\t\t\tKeys.Cleanup.RootDir,\n 30→\t\t\tfalse,\n 31→\t\t)\n 32→\t} else {\n 33→\t\tif Keys.Cleanup.Interval == \"\" {\n 34→\t\t\tKeys.Cleanup.Interval = Keys.RetentionInMemory\n 35→\t\t}\n 36→\n 37→\t\t// Run as Deleter\n 38→\t\tcleanUpWorker(wg, ctx,\n 39→\t\t\tKeys.Cleanup.Interval,\n 40→\t\t\t\"deleting\",\n 41→\t\t\t\"\",\n 42→\t\t\ttrue,\n 43→\t\t)\n 44→\t}\n 45→}\n 46→\n 47→// cleanUpWorker takes simple values to configure what it does\n 48→func cleanUpWorker(wg *sync.WaitGroup, ctx context.Context, interval string, mode string, cleanupDir string, delete bool) {\n 49→\twg.Go(func() {\n 50→\n 51→\t\td, err := time.ParseDuration(interval)\n 52→\t\tif err != nil {\n 53→\t\t\tcclog.Fatalf(\"[METRICSTORE]> error parsing %s interval duration: %v\\n\", mode, err)\n 54→\t\t}\n 55→\t\tif d <= 0 {\n 56→\t\t\treturn\n 57→\t\t}\n 58→\n 59→\t\tticker := time.NewTicker(d)\n 60→\t\tdefer ticker.Stop()\n 61→\n 62→\t\tfor {\n 63→\t\t\tselect {\n 64→\t\t\tcase <-ctx.Done():\n 65→\t\t\t\treturn\n 66→\t\t\tcase <-ticker.C:\n 67→\t\t\t\tt := time.Now().Add(-d)\n 68→\t\t\t\tcclog.Infof(\"[METRICSTORE]> start %s checkpoints (older than %s)...\", mode, t.Format(time.RFC3339))\n 69→\n 70→\t\t\t\tn, err := CleanupCheckpoints(Keys.Checkpoints.RootDir, cleanupDir, t.Unix(), delete)\n 71→\n 72→\t\t\t\tif err != nil {\n 73→\t\t\t\t\tcclog.Errorf(\"[METRICSTORE]> %s failed: %s\", mode, err.Error())\n 74→\t\t\t\t} else {\n 75→\t\t\t\t\tif delete {\n 76→\t\t\t\t\t\tcclog.Infof(\"[METRICSTORE]> done: %d checkpoints deleted\", n)\n 77→\t\t\t\t\t} else {\n 78→\t\t\t\t\t\tcclog.Infof(\"[METRICSTORE]> done: %d checkpoint files archived to parquet\", n)\n 79→\t\t\t\t\t}\n 80→\t\t\t\t}\n 81→\t\t\t}\n 82→\t\t}\n 83→\t})\n 84→}\n 85→\n 86→var ErrNoNewArchiveData error = errors.New(\"all data already archived\")\n 87→\n 88→// CleanupCheckpoints deletes or archives all checkpoint files older than `from`.\n 89→// When archiving, consolidates all hosts per cluster into a single Parquet file.\n 90→func CleanupCheckpoints(checkpointsDir, cleanupDir string, from int64, deleteInstead bool) (int, error) {\n 91→\tif deleteInstead {\n 92→\t\treturn deleteCheckpoints(checkpointsDir, from)\n 93→\t}\n 94→\n 95→\treturn archiveCheckpoints(checkpointsDir, cleanupDir, from)\n 96→}\n 97→\n 98→// deleteCheckpoints removes checkpoint files older than `from` across all clusters/hosts.\n 99→func deleteCheckpoints(checkpointsDir string, from int64) (int, error) {\n 100→\tentries1, err := os.ReadDir(checkpointsDir)\n 101→\tif err != nil {\n 102→\t\treturn 0, err\n 103→\t}\n 104→\n 105→\ttype workItem struct {\n 106→\t\tdir string\n 107→\t\tcluster, host string\n 108→\t}\n 109→\n 110→\tvar wg sync.WaitGroup\n 111→\tn, errs := int32(0), int32(0)\n 112→\twork := make(chan workItem, Keys.NumWorkers)\n 113→\n 114→\twg.Add(Keys.NumWorkers)\n 115→\tfor worker := 0; worker < Keys.NumWorkers; worker++ {\n 116→\t\tgo func() {\n 117→\t\t\tdefer wg.Done()\n 118→\t\t\tfor item := range work {\n 119→\t\t\t\tentries, err := os.ReadDir(item.dir)\n 120→\t\t\t\tif err != nil {\n 121→\t\t\t\t\tcclog.Errorf(\"error reading %s/%s: %s\", item.cluster, item.host, err.Error())\n 122→\t\t\t\t\tatomic.AddInt32(&errs, 1)\n 123→\t\t\t\t\tcontinue\n 124→\t\t\t\t}\n 125→\n 126→\t\t\t\tfiles, err := findFiles(entries, from, false)\n 127→\t\t\t\tif err != nil {\n 128→\t\t\t\t\tcclog.Errorf(\"error finding files in %s/%s: %s\", item.cluster, item.host, err.Error())\n 129→\t\t\t\t\tatomic.AddInt32(&errs, 1)\n 130→\t\t\t\t\tcontinue\n 131→\t\t\t\t}\n 132→\n 133→\t\t\t\tfor _, checkpoint := range files {\n 134→\t\t\t\t\tif err := os.Remove(filepath.Join(item.dir, checkpoint)); err != nil {\n 135→\t\t\t\t\t\tcclog.Errorf(\"error deleting %s/%s/%s: %s\", item.cluster, item.host, checkpoint, err.Error())\n 136→\t\t\t\t\t\tatomic.AddInt32(&errs, 1)\n 137→\t\t\t\t\t} else {\n 138→\t\t\t\t\t\tatomic.AddInt32(&n, 1)\n 139→\t\t\t\t\t}\n 140→\t\t\t\t}\n 141→\t\t\t}\n 142→\t\t}()\n 143→\t}\n 144→\n 145→\tfor _, de1 := range entries1 {\n 146→\t\tentries2, e := os.ReadDir(filepath.Join(checkpointsDir, de1.Name()))\n 147→\t\tif e != nil {\n 148→\t\t\terr = e\n 149→\t\t\tcontinue\n 150→\t\t}\n 151→\n 152→\t\tfor _, de2 := range entries2 {\n 153→\t\t\twork <- workItem{\n 154→\t\t\t\tdir: filepath.Join(checkpointsDir, de1.Name(), de2.Name()),\n 155→\t\t\t\tcluster: de1.Name(),\n 156→\t\t\t\thost: de2.Name(),\n 157→\t\t\t}\n 158→\t\t}\n 159→\t}\n 160→\n 161→\tclose(work)\n 162→\twg.Wait()\n 163→\n 164→\tif err != nil {\n 165→\t\treturn int(n), err\n 166→\t}\n 167→\tif errs > 0 {\n 168→\t\treturn int(n), fmt.Errorf(\"%d errors happened while deleting (%d successes)\", errs, n)\n 169→\t}\n 170→\treturn int(n), nil\n 171→}\n 172→\n 173→// archiveCheckpoints archives checkpoint files to Parquet format.\n 174→// Produces one Parquet file per cluster: //.parquet\n 175→func archiveCheckpoints(checkpointsDir, cleanupDir string, from int64) (int, error) {\n 176→\tclusterEntries, err := os.ReadDir(checkpointsDir)\n 177→\tif err != nil {\n 178→\t\treturn 0, err\n 179→\t}\n 180→\n 181→\ttotalFiles := 0\n 182→\n 183→\tfor _, clusterEntry := range clusterEntries {\n 184→\t\tif !clusterEntry.IsDir() {\n 185→\t\t\tcontinue\n 186→\t\t}\n 187→\n 188→\t\tcluster := clusterEntry.Name()\n 189→\t\thostEntries, err := os.ReadDir(filepath.Join(checkpointsDir, cluster))\n 190→\t\tif err != nil {\n 191→\t\t\treturn totalFiles, err\n 192→\t\t}\n 193→\n 194→\t\t// Collect rows from all hosts in this cluster using worker pool\n 195→\t\ttype hostResult struct {\n 196→\t\t\trows []ParquetMetricRow\n 197→\t\t\tfiles []string // checkpoint filenames to delete after successful write\n 198→\t\t\tdir string // checkpoint directory for this host\n 199→\t\t}\n 200→\n 201→\t\tresults := make(chan hostResult, len(hostEntries))\n 202→\t\twork := make(chan struct {\n 203→\t\t\tdir, host string\n 204→\t\t}, Keys.NumWorkers)\n 205→\n 206→\t\tvar wg sync.WaitGroup\n 207→\t\terrs := int32(0)\n 208→\n 209→\t\twg.Add(Keys.NumWorkers)\n 210→\t\tfor w := 0; w < Keys.NumWorkers; w++ {\n 211→\t\t\tgo func() {\n 212→\t\t\t\tdefer wg.Done()\n 213→\t\t\t\tfor item := range work {\n 214→\t\t\t\t\trows, files, err := archiveCheckpointsToParquet(item.dir, cluster, item.host, from)\n 215→\t\t\t\t\tif err != nil {\n 216→\t\t\t\t\t\tcclog.Errorf(\"[METRICSTORE]> error reading checkpoints for %s/%s: %s\", cluster, item.host, err.Error())\n 217→\t\t\t\t\t\tatomic.AddInt32(&errs, 1)\n 218→\t\t\t\t\t\tcontinue\n 219→\t\t\t\t\t}\n 220→\t\t\t\t\tif len(rows) > 0 {\n 221→\t\t\t\t\t\tresults <- hostResult{rows: rows, files: files, dir: item.dir}\n 222→\t\t\t\t\t}\n 223→\t\t\t\t}\n 224→\t\t\t}()\n 225→\t\t}\n 226→\n 227→\t\tgo func() {\n 228→\t\t\tfor _, hostEntry := range hostEntries {\n 229→\t\t\t\tif !hostEntry.IsDir() {\n 230→\t\t\t\t\tcontinue\n 231→\t\t\t\t}\n 232→\t\t\t\tdir := filepath.Join(checkpointsDir, cluster, hostEntry.Name())\n 233→\t\t\t\twork <- struct {\n 234→\t\t\t\t\tdir, host string\n 235→\t\t\t\t}{dir: dir, host: hostEntry.Name()}\n 236→\t\t\t}\n 237→\t\t\tclose(work)\n 238→\t\t\twg.Wait()\n 239→\t\t\tclose(results)\n 240→\t\t}()\n 241→\n 242→\t\t// Collect all rows and file info\n 243→\t\tvar allRows []ParquetMetricRow\n 244→\t\tvar allResults []hostResult\n 245→\t\tfor r := range results {\n 246→\t\t\tallRows = append(allRows, r.rows...)\n 247→\t\t\tallResults = append(allResults, r)\n 248→\t\t}\n 249→\n 250→\t\tif errs > 0 {\n 251→\t\t\treturn totalFiles, fmt.Errorf(\"%d errors reading checkpoints for cluster %s\", errs, cluster)\n 252→\t\t}\n 253→\n 254→\t\tif len(allRows) == 0 {\n 255→\t\t\tcontinue\n 256→\t\t}\n 257→\n 258→\t\t// Write one Parquet file per cluster\n 259→\t\tparquetFile := filepath.Join(cleanupDir, cluster, fmt.Sprintf(\"%d.parquet\", from))\n 260→\t\tif err := writeParquetArchive(parquetFile, allRows); err != nil {\n 261→\t\t\treturn totalFiles, fmt.Errorf(\"writing parquet archive for cluster %s: %w\", cluster, err)\n 262→\t\t}\n 263→\n 264→\t\t// Delete archived checkpoint files\n 265→\t\tfor _, result := range allResults {\n 266→\t\t\tfor _, file := range result.files {\n 267→\t\t\t\tfilename := filepath.Join(result.dir, file)\n 268→\t\t\t\tif err := os.Remove(filename); err != nil {\n 269→\t\t\t\t\tcclog.Warnf(\"[METRICSTORE]> could not remove archived checkpoint %s: %v\", filename, err)\n 270→\t\t\t\t} else {\n 271→\t\t\t\t\ttotalFiles++\n 272→\t\t\t\t}\n 273→\t\t\t}\n 274→\t\t}\n 275→\n 276→\t\tcclog.Infof(\"[METRICSTORE]> archived %d rows from %d files for cluster %s to %s\",\n 277→\t\t\tlen(allRows), totalFiles, cluster, parquetFile)\n 278→\t}\n 279→\n 280→\treturn totalFiles, nil\n 281→}\n 282→\n\n\nWhenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.\n\n"}]},"uuid":"d8a6ffe1-0723-4776-83ab-8d08e02e11ce","timestamp":"2026-03-04T09:25:34.158Z","toolUseResult":{"type":"text","file":{"filePath":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/archive.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 metricstore\n\nimport (\n\t\"context\"\n\t\"errors\"\n\t\"fmt\"\n\t\"os\"\n\t\"path/filepath\"\n\t\"sync\"\n\t\"sync/atomic\"\n\t\"time\"\n\n\tcclog \"github.com/ClusterCockpit/cc-lib/v2/ccLogger\"\n)\n\n// Worker for either Archiving or Deleting files\n\nfunc CleanUp(wg *sync.WaitGroup, ctx context.Context) {\n\tif Keys.Cleanup.Mode == \"archive\" {\n\t\t// Run as Archiver\n\t\tcleanUpWorker(wg, ctx,\n\t\t\tKeys.Cleanup.Interval,\n\t\t\t\"archiving\",\n\t\t\tKeys.Cleanup.RootDir,\n\t\t\tfalse,\n\t\t)\n\t} else {\n\t\tif Keys.Cleanup.Interval == \"\" {\n\t\t\tKeys.Cleanup.Interval = Keys.RetentionInMemory\n\t\t}\n\n\t\t// Run as Deleter\n\t\tcleanUpWorker(wg, ctx,\n\t\t\tKeys.Cleanup.Interval,\n\t\t\t\"deleting\",\n\t\t\t\"\",\n\t\t\ttrue,\n\t\t)\n\t}\n}\n\n// cleanUpWorker takes simple values to configure what it does\nfunc cleanUpWorker(wg *sync.WaitGroup, ctx context.Context, interval string, mode string, cleanupDir string, delete bool) {\n\twg.Go(func() {\n\n\t\td, err := time.ParseDuration(interval)\n\t\tif err != nil {\n\t\t\tcclog.Fatalf(\"[METRICSTORE]> error parsing %s interval duration: %v\\n\", mode, err)\n\t\t}\n\t\tif d <= 0 {\n\t\t\treturn\n\t\t}\n\n\t\tticker := time.NewTicker(d)\n\t\tdefer ticker.Stop()\n\n\t\tfor {\n\t\t\tselect {\n\t\t\tcase <-ctx.Done():\n\t\t\t\treturn\n\t\t\tcase <-ticker.C:\n\t\t\t\tt := time.Now().Add(-d)\n\t\t\t\tcclog.Infof(\"[METRICSTORE]> start %s checkpoints (older than %s)...\", mode, t.Format(time.RFC3339))\n\n\t\t\t\tn, err := CleanupCheckpoints(Keys.Checkpoints.RootDir, cleanupDir, t.Unix(), delete)\n\n\t\t\t\tif err != nil {\n\t\t\t\t\tcclog.Errorf(\"[METRICSTORE]> %s failed: %s\", mode, err.Error())\n\t\t\t\t} else {\n\t\t\t\t\tif delete {\n\t\t\t\t\t\tcclog.Infof(\"[METRICSTORE]> done: %d checkpoints deleted\", n)\n\t\t\t\t\t} else {\n\t\t\t\t\t\tcclog.Infof(\"[METRICSTORE]> done: %d checkpoint files archived to parquet\", n)\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t})\n}\n\nvar ErrNoNewArchiveData error = errors.New(\"all data already archived\")\n\n// CleanupCheckpoints deletes or archives all checkpoint files older than `from`.\n// When archiving, consolidates all hosts per cluster into a single Parquet file.\nfunc CleanupCheckpoints(checkpointsDir, cleanupDir string, from int64, deleteInstead bool) (int, error) {\n\tif deleteInstead {\n\t\treturn deleteCheckpoints(checkpointsDir, from)\n\t}\n\n\treturn archiveCheckpoints(checkpointsDir, cleanupDir, from)\n}\n\n// deleteCheckpoints removes checkpoint files older than `from` across all clusters/hosts.\nfunc deleteCheckpoints(checkpointsDir string, from int64) (int, error) {\n\tentries1, err := os.ReadDir(checkpointsDir)\n\tif err != nil {\n\t\treturn 0, err\n\t}\n\n\ttype workItem struct {\n\t\tdir string\n\t\tcluster, host string\n\t}\n\n\tvar wg sync.WaitGroup\n\tn, errs := int32(0), int32(0)\n\twork := make(chan workItem, Keys.NumWorkers)\n\n\twg.Add(Keys.NumWorkers)\n\tfor worker := 0; worker < Keys.NumWorkers; worker++ {\n\t\tgo func() {\n\t\t\tdefer wg.Done()\n\t\t\tfor item := range work {\n\t\t\t\tentries, err := os.ReadDir(item.dir)\n\t\t\t\tif err != nil {\n\t\t\t\t\tcclog.Errorf(\"error reading %s/%s: %s\", item.cluster, item.host, err.Error())\n\t\t\t\t\tatomic.AddInt32(&errs, 1)\n\t\t\t\t\tcontinue\n\t\t\t\t}\n\n\t\t\t\tfiles, err := findFiles(entries, from, false)\n\t\t\t\tif err != nil {\n\t\t\t\t\tcclog.Errorf(\"error finding files in %s/%s: %s\", item.cluster, item.host, err.Error())\n\t\t\t\t\tatomic.AddInt32(&errs, 1)\n\t\t\t\t\tcontinue\n\t\t\t\t}\n\n\t\t\t\tfor _, checkpoint := range files {\n\t\t\t\t\tif err := os.Remove(filepath.Join(item.dir, checkpoint)); err != nil {\n\t\t\t\t\t\tcclog.Errorf(\"error deleting %s/%s/%s: %s\", item.cluster, item.host, checkpoint, err.Error())\n\t\t\t\t\t\tatomic.AddInt32(&errs, 1)\n\t\t\t\t\t} else {\n\t\t\t\t\t\tatomic.AddInt32(&n, 1)\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}()\n\t}\n\n\tfor _, de1 := range entries1 {\n\t\tentries2, e := os.ReadDir(filepath.Join(checkpointsDir, de1.Name()))\n\t\tif e != nil {\n\t\t\terr = e\n\t\t\tcontinue\n\t\t}\n\n\t\tfor _, de2 := range entries2 {\n\t\t\twork <- workItem{\n\t\t\t\tdir: filepath.Join(checkpointsDir, de1.Name(), de2.Name()),\n\t\t\t\tcluster: de1.Name(),\n\t\t\t\thost: de2.Name(),\n\t\t\t}\n\t\t}\n\t}\n\n\tclose(work)\n\twg.Wait()\n\n\tif err != nil {\n\t\treturn int(n), err\n\t}\n\tif errs > 0 {\n\t\treturn int(n), fmt.Errorf(\"%d errors happened while deleting (%d successes)\", errs, n)\n\t}\n\treturn int(n), nil\n}\n\n// archiveCheckpoints archives checkpoint files to Parquet format.\n// Produces one Parquet file per cluster: //.parquet\nfunc archiveCheckpoints(checkpointsDir, cleanupDir string, from int64) (int, error) {\n\tclusterEntries, err := os.ReadDir(checkpointsDir)\n\tif err != nil {\n\t\treturn 0, err\n\t}\n\n\ttotalFiles := 0\n\n\tfor _, clusterEntry := range clusterEntries {\n\t\tif !clusterEntry.IsDir() {\n\t\t\tcontinue\n\t\t}\n\n\t\tcluster := clusterEntry.Name()\n\t\thostEntries, err := os.ReadDir(filepath.Join(checkpointsDir, cluster))\n\t\tif err != nil {\n\t\t\treturn totalFiles, err\n\t\t}\n\n\t\t// Collect rows from all hosts in this cluster using worker pool\n\t\ttype hostResult struct {\n\t\t\trows []ParquetMetricRow\n\t\t\tfiles []string // checkpoint filenames to delete after successful write\n\t\t\tdir string // checkpoint directory for this host\n\t\t}\n\n\t\tresults := make(chan hostResult, len(hostEntries))\n\t\twork := make(chan struct {\n\t\t\tdir, host string\n\t\t}, Keys.NumWorkers)\n\n\t\tvar wg sync.WaitGroup\n\t\terrs := int32(0)\n\n\t\twg.Add(Keys.NumWorkers)\n\t\tfor w := 0; w < Keys.NumWorkers; w++ {\n\t\t\tgo func() {\n\t\t\t\tdefer wg.Done()\n\t\t\t\tfor item := range work {\n\t\t\t\t\trows, files, err := archiveCheckpointsToParquet(item.dir, cluster, item.host, from)\n\t\t\t\t\tif err != nil {\n\t\t\t\t\t\tcclog.Errorf(\"[METRICSTORE]> error reading checkpoints for %s/%s: %s\", cluster, item.host, err.Error())\n\t\t\t\t\t\tatomic.AddInt32(&errs, 1)\n\t\t\t\t\t\tcontinue\n\t\t\t\t\t}\n\t\t\t\t\tif len(rows) > 0 {\n\t\t\t\t\t\tresults <- hostResult{rows: rows, files: files, dir: item.dir}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}()\n\t\t}\n\n\t\tgo func() {\n\t\t\tfor _, hostEntry := range hostEntries {\n\t\t\t\tif !hostEntry.IsDir() {\n\t\t\t\t\tcontinue\n\t\t\t\t}\n\t\t\t\tdir := filepath.Join(checkpointsDir, cluster, hostEntry.Name())\n\t\t\t\twork <- struct {\n\t\t\t\t\tdir, host string\n\t\t\t\t}{dir: dir, host: hostEntry.Name()}\n\t\t\t}\n\t\t\tclose(work)\n\t\t\twg.Wait()\n\t\t\tclose(results)\n\t\t}()\n\n\t\t// Collect all rows and file info\n\t\tvar allRows []ParquetMetricRow\n\t\tvar allResults []hostResult\n\t\tfor r := range results {\n\t\t\tallRows = append(allRows, r.rows...)\n\t\t\tallResults = append(allResults, r)\n\t\t}\n\n\t\tif errs > 0 {\n\t\t\treturn totalFiles, fmt.Errorf(\"%d errors reading checkpoints for cluster %s\", errs, cluster)\n\t\t}\n\n\t\tif len(allRows) == 0 {\n\t\t\tcontinue\n\t\t}\n\n\t\t// Write one Parquet file per cluster\n\t\tparquetFile := filepath.Join(cleanupDir, cluster, fmt.Sprintf(\"%d.parquet\", from))\n\t\tif err := writeParquetArchive(parquetFile, allRows); err != nil {\n\t\t\treturn totalFiles, fmt.Errorf(\"writing parquet archive for cluster %s: %w\", cluster, err)\n\t\t}\n\n\t\t// Delete archived checkpoint files\n\t\tfor _, result := range allResults {\n\t\t\tfor _, file := range result.files {\n\t\t\t\tfilename := filepath.Join(result.dir, file)\n\t\t\t\tif err := os.Remove(filename); err != nil {\n\t\t\t\t\tcclog.Warnf(\"[METRICSTORE]> could not remove archived checkpoint %s: %v\", filename, err)\n\t\t\t\t} else {\n\t\t\t\t\ttotalFiles++\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\tcclog.Infof(\"[METRICSTORE]> archived %d rows from %d files for cluster %s to %s\",\n\t\t\tlen(allRows), totalFiles, cluster, parquetFile)\n\t}\n\n\treturn totalFiles, nil\n}\n","numLines":282,"startLine":1,"totalLines":282}},"sourceToolAssistantUUID":"7f0eb884-6152-42e7-8838-e133bec334e1"} +{"parentUuid":"d8a6ffe1-0723-4776-83ab-8d08e02e11ce","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","message":{"model":"claude-sonnet-4-6","id":"msg_01D6YWoJWCm8FqjDbSKrCnuP","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01TtGkcBBF2kFEJsR6DwPoGa","name":"Read","input":{"file_path":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/configSchema.go"},"caller":{"type":"direct"}}],"stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":16355,"cache_read_input_tokens":25093,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":16355},"output_tokens":18,"service_tier":"standard","inference_geo":"not_available"}},"requestId":"req_011CYhoLMhZXUhu8qWQL7aNy","type":"assistant","uuid":"3576dbfc-000d-49e4-87e7-82b1fb97d7f7","timestamp":"2026-03-04T09:25:37.862Z"} +{"parentUuid":"3576dbfc-000d-49e4-87e7-82b1fb97d7f7","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","type":"progress","data":{"type":"hook_progress","hookEvent":"PostToolUse","hookName":"PostToolUse:Read","command":"callback"},"parentToolUseID":"toolu_01TtGkcBBF2kFEJsR6DwPoGa","toolUseID":"toolu_01TtGkcBBF2kFEJsR6DwPoGa","timestamp":"2026-03-04T09:25:37.882Z","uuid":"6dbae310-5f1d-4911-ba42-e999f452217c"} +{"parentUuid":"3576dbfc-000d-49e4-87e7-82b1fb97d7f7","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01TtGkcBBF2kFEJsR6DwPoGa","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 metricstore\n 7→\n 8→const configSchema = `{\n 9→ \"type\": \"object\",\n 10→ \"description\": \"Configuration specific to built-in metric-store.\",\n 11→ \"properties\": {\n 12→ \"num-workers\": {\n 13→ \"description\": \"Number of concurrent workers for checkpoint and archive operations\",\n 14→ \"type\": \"integer\"\n 15→ },\n 16→ \"checkpoints\": {\n 17→ \"description\": \"Configuration for checkpointing the metrics buffers\",\n 18→ \"type\": \"object\",\n 19→ \"properties\": {\n 20→ \"file-format\": {\n 21→ \"description\": \"Specify the format for checkpoint files. Two variants: 'json' (human-readable, periodic) and 'wal' (binary snapshot + Write-Ahead Log, crash-safe). Default is 'json'.\",\n 22→ \"type\": \"string\"\n 23→ },\n 24→ \"interval\": {\n 25→ \"description\": \"Interval at which the metrics should be checkpointed.\",\n 26→ \"type\": \"string\"\n 27→ },\n 28→ \"directory\": {\n 29→ \"description\": \"Path in which the checkpointed files should be placed.\",\n 30→ \"type\": \"string\"\n 31→ }\n 32→ },\n 33→ \"required\": [\"interval\"]\n 34→ },\n 35→ \"cleanup\": {\n 36→ \"description\": \"Configuration for the cleanup process.\",\n 37→ \"type\": \"object\",\n 38→ \"properties\": {\n 39→ \"mode\": {\n 40→ \"description\": \"The operation mode (e.g., 'archive' or 'delete').\",\n 41→ \"type\": \"string\",\n 42→ \"enum\": [\"archive\", \"delete\"] \n 43→ },\n 44→ \"interval\": {\n 45→ \"description\": \"Interval at which the cleanup runs.\",\n 46→ \"type\": \"string\"\n 47→ },\n 48→ \"directory\": {\n 49→ \"description\": \"Target directory for operations.\",\n 50→ \"type\": \"string\"\n 51→ }\n 52→ },\n 53→ \"if\": {\n 54→ \"properties\": {\n 55→ \"mode\": { \"const\": \"archive\" }\n 56→ }\n 57→ },\n 58→ \"then\": {\n 59→ \"required\": [\"interval\", \"directory\"]\n 60→ }\n 61→ },\n 62→ \"retention-in-memory\": {\n 63→ \"description\": \"Keep the metrics within memory for given time interval. Retention for X hours, then the metrics would be freed.\",\n 64→ \"type\": \"string\"\n 65→ },\n 66→ \"memory-cap\": {\n 67→ \"description\": \"Upper memory capacity limit used by metricstore in GB\",\n 68→ \"type\": \"integer\"\n 69→ },\n 70→ \"nats-subscriptions\": {\n 71→ \"description\": \"Array of various subscriptions. Allows to subscribe to different subjects and publishers.\",\n 72→ \"type\": \"array\",\n 73→ \"items\": {\n 74→ \"type\": \"object\",\n 75→ \"properties\": {\n 76→ \"subscribe-to\": {\n 77→ \"description\": \"Subject name\",\n 78→ \"type\": \"string\"\n 79→ },\n 80→ \"cluster-tag\": {\n 81→ \"description\": \"Optional: Allow lines without a cluster tag, use this as default\",\n 82→ \"type\": \"string\"\n 83→ }\n 84→ },\n 85→\t\t\t\t\"required\": [\"subscribe-to\"]\n 86→ }\n 87→ }\n 88→ },\n 89→ \"required\": [\"checkpoints\", \"retention-in-memory\", \"memory-cap\"]\n 90→}`\n 91→\n\n\nWhenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.\n\n"}]},"uuid":"9cbb3561-a233-4467-8a18-d88786a7ad70","timestamp":"2026-03-04T09:25:37.882Z","toolUseResult":{"type":"text","file":{"filePath":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/configSchema.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 metricstore\n\nconst configSchema = `{\n \"type\": \"object\",\n \"description\": \"Configuration specific to built-in metric-store.\",\n \"properties\": {\n \"num-workers\": {\n \"description\": \"Number of concurrent workers for checkpoint and archive operations\",\n \"type\": \"integer\"\n },\n \"checkpoints\": {\n \"description\": \"Configuration for checkpointing the metrics buffers\",\n \"type\": \"object\",\n \"properties\": {\n \"file-format\": {\n \"description\": \"Specify the format for checkpoint files. Two variants: 'json' (human-readable, periodic) and 'wal' (binary snapshot + Write-Ahead Log, crash-safe). Default is 'json'.\",\n \"type\": \"string\"\n },\n \"interval\": {\n \"description\": \"Interval at which the metrics should be checkpointed.\",\n \"type\": \"string\"\n },\n \"directory\": {\n \"description\": \"Path in which the checkpointed files should be placed.\",\n \"type\": \"string\"\n }\n },\n \"required\": [\"interval\"]\n },\n \"cleanup\": {\n \"description\": \"Configuration for the cleanup process.\",\n \"type\": \"object\",\n \"properties\": {\n \"mode\": {\n \"description\": \"The operation mode (e.g., 'archive' or 'delete').\",\n \"type\": \"string\",\n \"enum\": [\"archive\", \"delete\"] \n },\n \"interval\": {\n \"description\": \"Interval at which the cleanup runs.\",\n \"type\": \"string\"\n },\n \"directory\": {\n \"description\": \"Target directory for operations.\",\n \"type\": \"string\"\n }\n },\n \"if\": {\n \"properties\": {\n \"mode\": { \"const\": \"archive\" }\n }\n },\n \"then\": {\n \"required\": [\"interval\", \"directory\"]\n }\n },\n \"retention-in-memory\": {\n \"description\": \"Keep the metrics within memory for given time interval. Retention for X hours, then the metrics would be freed.\",\n \"type\": \"string\"\n },\n \"memory-cap\": {\n \"description\": \"Upper memory capacity limit used by metricstore in GB\",\n \"type\": \"integer\"\n },\n \"nats-subscriptions\": {\n \"description\": \"Array of various subscriptions. Allows to subscribe to different subjects and publishers.\",\n \"type\": \"array\",\n \"items\": {\n \"type\": \"object\",\n \"properties\": {\n \"subscribe-to\": {\n \"description\": \"Subject name\",\n \"type\": \"string\"\n },\n \"cluster-tag\": {\n \"description\": \"Optional: Allow lines without a cluster tag, use this as default\",\n \"type\": \"string\"\n }\n },\n\t\t\t\t\"required\": [\"subscribe-to\"]\n }\n }\n },\n \"required\": [\"checkpoints\", \"retention-in-memory\", \"memory-cap\"]\n}`\n","numLines":91,"startLine":1,"totalLines":91}},"sourceToolAssistantUUID":"3576dbfc-000d-49e4-87e7-82b1fb97d7f7"} +{"parentUuid":"9cbb3561-a233-4467-8a18-d88786a7ad70","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","message":{"model":"claude-sonnet-4-6","id":"msg_01D6YWoJWCm8FqjDbSKrCnuP","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_0131upXuobKtfGZbwfBoGLNH","name":"Read","input":{"file_path":"/Users/jan/prg/ClusterCockpit/cc-backend/configs/config.json"},"caller":{"type":"direct"}}],"stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":16355,"cache_read_input_tokens":25093,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":16355},"output_tokens":18,"service_tier":"standard","inference_geo":"not_available"}},"requestId":"req_011CYhoLMhZXUhu8qWQL7aNy","type":"assistant","uuid":"587d105c-dacd-48ff-863e-470d7caec616","timestamp":"2026-03-04T09:25:38.289Z"} +{"parentUuid":"587d105c-dacd-48ff-863e-470d7caec616","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","type":"progress","data":{"type":"hook_progress","hookEvent":"PostToolUse","hookName":"PostToolUse:Read","command":"callback"},"parentToolUseID":"toolu_0131upXuobKtfGZbwfBoGLNH","toolUseID":"toolu_0131upXuobKtfGZbwfBoGLNH","timestamp":"2026-03-04T09:25:38.302Z","uuid":"65b6e539-a849-4c29-a790-71f3ab64e357"} +{"parentUuid":"587d105c-dacd-48ff-863e-470d7caec616","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_0131upXuobKtfGZbwfBoGLNH","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→ \"interval\": \"12h\",\n 78→ \"directory\": \"./var/checkpoints\"\n 79→ },\n 80→ \"memory-cap\": 100,\n 81→ \"retention-in-memory\": \"48h\",\n 82→ \"cleanup\": {\n 83→ \"mode\": \"archive\",\n 84→ \"interval\": \"48h\",\n 85→ \"directory\": \"./var/archive\"\n 86→ },\n 87→ \"nats-subscriptions\": [\n 88→ {\n 89→ \"subscribe-to\": \"hpc-nats\",\n 90→ \"cluster-tag\": \"fritz\"\n 91→ },\n 92→ {\n 93→ \"subscribe-to\": \"hpc-nats\",\n 94→ \"cluster-tag\": \"alex\"\n 95→ }\n 96→ ]\n 97→ },\n 98→ \"ui-file\": \"ui-config.json\"\n 99→}\n 100→\n\n\nWhenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.\n\n"}]},"uuid":"a45c6390-6a88-4033-9aec-00375dd50531","timestamp":"2026-03-04T09:25:38.302Z","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 \"interval\": \"12h\",\n \"directory\": \"./var/checkpoints\"\n },\n \"memory-cap\": 100,\n \"retention-in-memory\": \"48h\",\n \"cleanup\": {\n \"mode\": \"archive\",\n \"interval\": \"48h\",\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":100,"startLine":1,"totalLines":100}},"sourceToolAssistantUUID":"587d105c-dacd-48ff-863e-470d7caec616"} 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\"addr\": \"127.0.0.1:8080\"\n 4→ },\n 5→ \"cron\": {\n 6→ \"commit-job-worker\": \"1m\",\n 7→ \"duration-worker\": \"3m\",\n 8→ \"footprint-worker\": \"5m\"\n 9→ },\n 10→ \"auth\": {\n 11→ \"jwts\": {\n 12→ \"max-age\": \"2000h\"\n 13→ }\n 14→ },\n 15→ \"metric-store-external\": [\n 16→ {\n 17→ \"scope\": \"fritz\",\n 18→ \"url\": \"http://0.0.0.0:8082\",\n 19→ \"token\": \"REDACTED\"\n 20→ }\n 21→ ],\n 22→ \"metric-store\": {\n 23→ \"checkpoints\": {\n 24→ \"file-format\": \"wal\",\n 25→ \"interval\": \"12h\"\n 26→ },\n 27→ \"retention-in-memory\": \"48h\",\n 28→ \"memory-cap\": 100\n 29→ }\n 30→}\n 31→\n\n\nWhenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.\n\n"}]},"uuid":"70cebab5-0c44-4112-ba47-4e817c5057e1","timestamp":"2026-03-04T09:25:38.551Z","toolUseResult":{"type":"text","file":{"filePath":"/Users/jan/prg/ClusterCockpit/cc-backend/configs/config-demo.json","content":"{\n \"main\": {\n \"addr\": \"127.0.0.1:8080\"\n },\n \"cron\": {\n \"commit-job-worker\": \"1m\",\n \"duration-worker\": \"3m\",\n \"footprint-worker\": \"5m\"\n },\n \"auth\": {\n \"jwts\": {\n \"max-age\": \"2000h\"\n }\n },\n \"metric-store-external\": [\n {\n \"scope\": \"fritz\",\n \"url\": \"http://0.0.0.0:8082\",\n \"token\": \"REDACTED\"\n }\n ],\n \"metric-store\": {\n \"checkpoints\": {\n \"file-format\": \"wal\",\n \"interval\": \"12h\"\n },\n \"retention-in-memory\": \"48h\",\n \"memory-cap\": 100\n }\n}\n","numLines":31,"startLine":1,"totalLines":31}},"sourceToolAssistantUUID":"57288fa7-6972-4704-979c-1487c22036ad"} +{"parentUuid":"70cebab5-0c44-4112-ba47-4e817c5057e1","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","message":{"model":"claude-sonnet-4-6","id":"msg_01FsMryCKDETndSELYyFZh1t","type":"message","role":"assistant","content":[{"type":"thinking","thinking":"Now I have all the information I need. Let me implement the plan:\n\n1. **`pkg/metricstore/config.go`**: Remove `Interval` from `Checkpoints` and `Cleanup` structs, change default `FileFormat` to `\"wal\"`, update comments.\n\n2. **`pkg/metricstore/configSchema.go`**: Remove `\"interval\"` from checkpoints properties and required, remove from cleanup properties and then required.\n\n3. **`pkg/metricstore/checkpoint.go`**: Replace dynamic interval parsing with hardcoded 12h constant.\n\n4. **`pkg/metricstore/archive.go`**: Simplify `CleanUp()` to always use `Keys.RetentionInMemory`.\n\n\n5. **`configs/config.json`**: Remove the interval fields from both checkpoints and cleanup sections.\n6. **`configs/config-demo.json`**: Remove the interval and file-format fields from checkpoints.\n\nNow I'll apply all these changes.","signature":"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"}],"stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":3256,"cache_read_input_tokens":41448,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":3256},"output_tokens":8,"service_tier":"standard","inference_geo":"not_available"}},"requestId":"req_011CYhoLgadAsr9dwp5w8ViJ","type":"assistant","uuid":"ba15bf44-a5ca-41f3-a7bd-3fed797c4b95","timestamp":"2026-03-04T09:25:46.134Z"} 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often to save (e.g., \"1h\")\n//\t│ └─ RootDir: Checkpoint storage path\n//\t├─ Cleanup: Long-term storage configuration\n//\t│ ├─ Interval: How often to delete/archive\n//\t│ ├─ RootDir: Archive storage path\n//\t│ └─ Mode: \"delete\" or \"archive\"\n//\t├─ Debug: Development/debugging options\n//\t└─ Subscriptions: NATS topic subscriptions for metric ingestion","new_string":"// Configuration Hierarchy\n//\n// The metricstore package uses nested configuration structures:\n//\n//\tMetricStoreConfig (Keys)\n//\t├─ NumWorkers: Parallel checkpoint/archive workers\n//\t├─ RetentionInMemory: How long to keep data in RAM (also used as cleanup interval)\n//\t├─ MemoryCap: Memory limit in bytes (triggers forceFree)\n//\t├─ Checkpoints: Persistence configuration\n//\t│ ├─ FileFormat: \"json\" or \"wal\" (default: \"wal\")\n//\t│ └─ RootDir: Checkpoint storage path\n//\t├─ Cleanup: Long-term storage configuration\n//\t│ ├─ RootDir: Archive storage path\n//\t│ └─ Mode: \"delete\" or 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configuration\n17-/\t│ ├─ FileFormat: \"json\" or \"wal\"\n18://\t│ ├─ Interval: How often to save (e.g., \"1h\")\n19-/\t│ └─ RootDir: Checkpoint storage path\n20-/\t├─ Cleanup: Long-term storage configuration\n21://\t│ ├─ Interval: How often to delete/archive\n22-/\t│ ├─ RootDir: Archive storage path\n23-/\t│ └─ Mode: \"delete\" or \"archive\"\n--\n55-\tDefaultMaxWorkers = 10\n56-\tDefaultBufferCapacity = 512\n57:\tDefaultGCTriggerInterval = 100\n58:\tDefaultMemoryUsageTrackerInterval = 1 * time.Hour\n59-)\n60-\n--\n63-/ Fields:\n64-/ - FileFormat: \"json\" (human-readable, periodic) or \"wal\" (binary snapshot + WAL, crash-safe)\n65:// - Interval: Duration string (e.g., \"1h\", \"30m\") between checkpoint saves\n66-/ - RootDir: Filesystem path for checkpoint files (created if missing)\n67-type Checkpoints struct {\n68-\tFileFormat string `json:\"file-format\"`\n69:\tInterval string `json:\"interval\"`\n70-\tRootDir string `json:\"directory\"`\n71-}\n--\n86-//\n87-/ Fields:\n88:// - ArchiveInterval: Duration string (e.g., \"24h\") between archive operations\n89-/ - RootDir: Filesystem path for archived data (created if missing)\n90-/ - DeleteInstead: If true, delete old data instead of archiving (saves disk space)\n91-type Cleanup struct {\n92:\tInterval string `json:\"interval\"`\n93-\tRootDir string `json:\"directory\"`\n94-\tMode string `json:\"mode\"`\n--\n199-/ - offset: Internal index into Level.metrics slice (assigned during Init)\n200-type MetricConfig struct {\n201:\t// Interval in seconds at which measurements are stored\n202-\tFrequency int64\n203-"}]},"uuid":"05133a6b-cd23-4a51-bd39-555d24e1e753","timestamp":"2026-03-04T09:25:59.221Z","toolUseResult":{"mode":"content","numFiles":0,"filenames":[],"content":"16-/\t├─ Checkpoints: Persistence configuration\n17-/\t│ ├─ FileFormat: \"json\" or \"wal\"\n18://\t│ ├─ Interval: How often to save (e.g., \"1h\")\n19-/\t│ └─ RootDir: Checkpoint storage path\n20-/\t├─ Cleanup: Long-term storage configuration\n21://\t│ ├─ Interval: How often to delete/archive\n22-/\t│ ├─ RootDir: Archive storage path\n23-/\t│ └─ Mode: \"delete\" or \"archive\"\n--\n55-\tDefaultMaxWorkers = 10\n56-\tDefaultBufferCapacity = 512\n57:\tDefaultGCTriggerInterval = 100\n58:\tDefaultMemoryUsageTrackerInterval = 1 * time.Hour\n59-)\n60-\n--\n63-/ Fields:\n64-/ - FileFormat: \"json\" (human-readable, periodic) or \"wal\" (binary snapshot + WAL, crash-safe)\n65:// - Interval: Duration string (e.g., \"1h\", \"30m\") between checkpoint saves\n66-/ - RootDir: Filesystem path for checkpoint files (created if missing)\n67-type Checkpoints struct {\n68-\tFileFormat string `json:\"file-format\"`\n69:\tInterval string `json:\"interval\"`\n70-\tRootDir string `json:\"directory\"`\n71-}\n--\n86-//\n87-/ Fields:\n88:// - ArchiveInterval: Duration string (e.g., \"24h\") between archive operations\n89-/ - RootDir: Filesystem path for archived data (created if missing)\n90-/ - DeleteInstead: If true, delete old data instead of archiving (saves disk space)\n91-type Cleanup struct {\n92:\tInterval string `json:\"interval\"`\n93-\tRootDir string `json:\"directory\"`\n94-\tMode string `json:\"mode\"`\n--\n199-/ - offset: Internal index into Level.metrics slice (assigned during Init)\n200-type MetricConfig struct {\n201:\t// Interval in seconds at which measurements are stored\n202-\tFrequency int64\n203-","numLines":41},"sourceToolAssistantUUID":"651b66df-afcb-46f5-9bc8-6626511f6518"} +{"parentUuid":"05133a6b-cd23-4a51-bd39-555d24e1e753","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","message":{"model":"claude-sonnet-4-6","id":"msg_01CDVTtFSwy2PaX6LL5ZYey5","type":"message","role":"assistant","content":[{"type":"thinking","thinking":"The file uses non-breaking characters for some of the tree lines. Let me read the raw bytes of the relevant section.\n\nActually I think the issue is that the comment characters use different characters (/ vs //) - looking at the grep output, some lines start with / not // which is unusual. Let me re-read the file carefully.\n\nLooking at the file content again, the tree lines use:\n```\n//\t│ ├─ FileFormat: \"json\" or \"wal\"\n//\t│ ├─ Interval: How often to save (e.g., \"1h\")\n//\t│ └─ RootDir: Checkpoint storage path\n\n\n```\n\nBut in the grep output, the display shows `/` vs `//` which might be a display artifact. Let me try a more targeted approach and just edit the `Checkpoints` and `Cleanup` structs directly, which are clearer. I'll start with the straightforward changes: removing `Interval` from both structs, changing the default `FileFormat` to `\"wal\"`, and updating the related documentation.\n\nUpdating struct comments...","signature":"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"}],"stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":726,"cache_read_input_tokens":45914,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":726},"output_tokens":8,"service_tier":"standard","inference_geo":"not_available"}},"requestId":"req_011CYhoNCt3pPECjzShPJ3tr","type":"assistant","uuid":"90b928a5-4488-4751-8304-652dad7af586","timestamp":"2026-03-04T09:26:07.102Z"} +{"parentUuid":"90b928a5-4488-4751-8304-652dad7af586","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","message":{"model":"claude-sonnet-4-6","id":"msg_01CDVTtFSwy2PaX6LL5ZYey5","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01LAKmTfyirFjCb9zKVyXNnL","name":"Edit","input":{"replace_all":false,"file_path":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/config.go","old_string":"// Checkpoints configures periodic persistence of in-memory metric data.\n//\n// Fields:\n// - FileFormat: \"json\" (human-readable, periodic) or \"wal\" (binary snapshot + WAL, crash-safe)\n// - Interval: Duration string (e.g., \"1h\", \"30m\") between checkpoint saves\n// - RootDir: Filesystem path for checkpoint files (created if missing)\ntype Checkpoints struct {\n\tFileFormat string `json:\"file-format\"`\n\tInterval string `json:\"interval\"`\n\tRootDir string `json:\"directory\"`\n}","new_string":"// Checkpoints configures periodic persistence of in-memory metric data.\n//\n// Fields:\n// - FileFormat: \"json\" (human-readable, periodic) or \"wal\" (binary snapshot + WAL, crash-safe); default is \"wal\"\n// - RootDir: Filesystem path for checkpoint files (created if missing)\ntype Checkpoints struct {\n\tFileFormat string `json:\"file-format\"`\n\tRootDir string `json:\"directory\"`\n}"},"caller":{"type":"direct"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":726,"cache_read_input_tokens":45914,"output_tokens":715,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":726,"ephemeral_5m_input_tokens":0},"inference_geo":"","iterations":[],"speed":"standard"}},"requestId":"req_011CYhoNCt3pPECjzShPJ3tr","type":"assistant","uuid":"2b788e37-1905-4d29-a5d6-73c9cf073924","timestamp":"2026-03-04T09:26:09.217Z"} +{"type":"file-history-snapshot","messageId":"2b788e37-1905-4d29-a5d6-73c9cf073924","snapshot":{"messageId":"f9f69cd7-691d-46b4-9e30-43ffeabb85a6","trackedFileBackups":{"pkg/metricstore/config.go":{"backupFileName":"614b3f053f832cad@v1","version":1,"backupTime":"2026-03-04T09:26:09.235Z"}},"timestamp":"2026-03-04T09:25:30.352Z"},"isSnapshotUpdate":true} +{"parentUuid":"2b788e37-1905-4d29-a5d6-73c9cf073924","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","type":"progress","data":{"type":"hook_progress","hookEvent":"PostToolUse","hookName":"PostToolUse:Edit","command":"callback"},"parentToolUseID":"toolu_01LAKmTfyirFjCb9zKVyXNnL","toolUseID":"toolu_01LAKmTfyirFjCb9zKVyXNnL","timestamp":"2026-03-04T09:26:09.237Z","uuid":"1d779361-e87c-4ac3-ad5a-a0cef6a386ac"} +{"parentUuid":"2b788e37-1905-4d29-a5d6-73c9cf073924","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01LAKmTfyirFjCb9zKVyXNnL","type":"tool_result","content":"The file /Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/config.go has been updated successfully."}]},"uuid":"8444002f-88da-4fa7-a5bc-00fb6009e385","timestamp":"2026-03-04T09:26:09.236Z","toolUseResult":{"filePath":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/config.go","oldString":"// Checkpoints configures periodic persistence of in-memory metric data.\n//\n// Fields:\n// - FileFormat: \"json\" (human-readable, periodic) or \"wal\" (binary snapshot + WAL, crash-safe)\n// - Interval: Duration string (e.g., \"1h\", \"30m\") between checkpoint saves\n// - RootDir: Filesystem path for checkpoint files (created if missing)\ntype Checkpoints struct {\n\tFileFormat string `json:\"file-format\"`\n\tInterval string `json:\"interval\"`\n\tRootDir string `json:\"directory\"`\n}","newString":"// Checkpoints configures periodic persistence of in-memory metric data.\n//\n// Fields:\n// - FileFormat: \"json\" (human-readable, periodic) or \"wal\" (binary snapshot + WAL, crash-safe); default is \"wal\"\n// - RootDir: Filesystem path for checkpoint files (created if missing)\ntype Checkpoints struct {\n\tFileFormat string `json:\"file-format\"`\n\tRootDir string `json:\"directory\"`\n}","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\n// Package metricstore provides config.go: Configuration structures and metric management.\n//\n// # Configuration Hierarchy\n//\n// The metricstore package uses nested configuration structures:\n//\n//\tMetricStoreConfig (Keys)\n//\t├─ NumWorkers: Parallel checkpoint/archive workers\n//\t├─ RetentionInMemory: How long to keep data in RAM\n//\t├─ MemoryCap: Memory limit in bytes (triggers forceFree)\n//\t├─ Checkpoints: Persistence configuration\n//\t│ ├─ FileFormat: \"json\" or \"wal\"\n//\t│ ├─ Interval: How often to save (e.g., \"1h\")\n//\t│ └─ RootDir: Checkpoint storage path\n//\t├─ Cleanup: Long-term storage configuration\n//\t│ ├─ Interval: How often to delete/archive\n//\t│ ├─ RootDir: Archive storage path\n//\t│ └─ Mode: \"delete\" or \"archive\"\n//\t├─ Debug: Development/debugging options\n//\t└─ Subscriptions: NATS topic subscriptions for metric ingestion\n//\n// # Metric Configuration\n//\n// Each metric (e.g., \"cpu_load\", \"mem_used\") has a MetricConfig entry in the global\n// Metrics map, defining:\n//\n// - Frequency: Measurement interval in seconds\n// - Aggregation: How to combine values (sum/avg/none) when transforming scopes\n// - offset: Internal index into Level.metrics slice (assigned during Init)\n//\n// # AggregationStrategy\n//\n// Determines how to combine metric values when aggregating from finer to coarser scopes:\n//\n// - NoAggregation: Do not combine (incompatible scopes)\n// - SumAggregation: Add values (e.g., power consumption: core→socket)\n// - AvgAggregation: Average values (e.g., temperature: core→socket)\npackage metricstore\n\nimport (\n\t\"fmt\"\n\t\"time\"\n\n\t\"github.com/ClusterCockpit/cc-backend/pkg/archive\"\n\tcclog \"github.com/ClusterCockpit/cc-lib/v2/ccLogger\"\n\t\"github.com/ClusterCockpit/cc-lib/v2/schema\"\n)\n\nconst (\n\tDefaultMaxWorkers = 10\n\tDefaultBufferCapacity = 512\n\tDefaultGCTriggerInterval = 100\n\tDefaultMemoryUsageTrackerInterval = 1 * time.Hour\n)\n\n// Checkpoints configures periodic persistence of in-memory metric data.\n//\n// Fields:\n// - FileFormat: \"json\" (human-readable, periodic) or \"wal\" (binary snapshot + WAL, crash-safe)\n// - Interval: Duration string (e.g., \"1h\", \"30m\") between checkpoint saves\n// - RootDir: Filesystem path for checkpoint files (created if missing)\ntype Checkpoints struct {\n\tFileFormat string `json:\"file-format\"`\n\tInterval string `json:\"interval\"`\n\tRootDir string `json:\"directory\"`\n}\n\n// Debug provides development and profiling options.\n//\n// Fields:\n// - DumpToFile: Path to dump checkpoint data for inspection (empty = disabled)\n// - EnableGops: Enable gops agent for live runtime debugging (https://github.com/google/gops)\ntype Debug struct {\n\tDumpToFile string `json:\"dump-to-file\"`\n\tEnableGops bool `json:\"gops\"`\n}\n\n// Archive configures long-term storage of old metric data.\n//\n// Data older than RetentionInMemory is archived to disk or deleted.\n//\n// Fields:\n// - ArchiveInterval: Duration string (e.g., \"24h\") between archive operations\n// - RootDir: Filesystem path for archived data (created if missing)\n// - DeleteInstead: If true, delete old data instead of archiving (saves disk space)\ntype Cleanup struct {\n\tInterval string `json:\"interval\"`\n\tRootDir string `json:\"directory\"`\n\tMode string `json:\"mode\"`\n}\n\n// Subscriptions defines NATS topics to subscribe to for metric ingestion.\n//\n// Each subscription receives metrics via NATS messaging, enabling real-time\n// data collection from compute nodes.\n//\n// Fields:\n// - SubscribeTo: NATS subject/channel name (e.g., \"metrics.compute.*\")\n// - ClusterTag: Default cluster name for metrics without cluster tag (optional)\ntype Subscriptions []struct {\n\t// Channel name\n\tSubscribeTo string `json:\"subscribe-to\"`\n\n\t// Allow lines without a cluster tag, use this as default, optional\n\tClusterTag string `json:\"cluster-tag\"`\n}\n\n// MetricStoreConfig defines the main configuration for the metricstore.\n//\n// Loaded from cc-backend's config.json \"metricstore\" section. Controls memory usage,\n// persistence, archiving, and metric ingestion.\n//\n// Fields:\n// - NumWorkers: Parallel workers for checkpoint/archive (0 = auto: min(NumCPU/2+1, 10))\n// - RetentionInMemory: Duration string (e.g., \"48h\") for in-memory data retention\n// - MemoryCap: Max bytes for buffer data (0 = unlimited); triggers forceFree when exceeded\n// - Checkpoints: Periodic persistence configuration\n// - Debug: Development/profiling options (nil = disabled)\n// - Archive: Long-term storage configuration (nil = disabled)\n// - Subscriptions: NATS topics for metric ingestion (nil = polling only)\ntype MetricStoreConfig struct {\n\t// Number of concurrent workers for checkpoint and archive operations.\n\t// If not set or 0, defaults to min(runtime.NumCPU()/2+1, 10)\n\tNumWorkers int `json:\"num-workers\"`\n\tRetentionInMemory string `json:\"retention-in-memory\"`\n\tMemoryCap int `json:\"memory-cap\"`\n\tCheckpoints Checkpoints `json:\"checkpoints\"`\n\tDebug *Debug `json:\"debug\"`\n\tCleanup *Cleanup `json:\"cleanup\"`\n\tSubscriptions *Subscriptions `json:\"nats-subscriptions\"`\n}\n\n// Keys is the global metricstore configuration instance.\n//\n// Initialized with defaults, then overwritten by cc-backend's config.json.\n// Accessed by Init(), Checkpointing(), and other lifecycle functions.\nvar Keys MetricStoreConfig = MetricStoreConfig{\n\tCheckpoints: Checkpoints{\n\t\tFileFormat: \"json\",\n\t\tRootDir: \"./var/checkpoints\",\n\t},\n\tCleanup: &Cleanup{\n\t\tMode: \"delete\",\n\t},\n}\n\n// AggregationStrategy defines how to combine metric values across hierarchy levels.\n//\n// Used when transforming data from finer-grained scopes (e.g., core) to coarser scopes\n// (e.g., socket). This is SPATIAL aggregation, not TEMPORAL (time-based) aggregation.\n//\n// Values:\n// - NoAggregation: Do not aggregate (incompatible scopes or non-aggregatable metrics)\n// - SumAggregation: Add values (e.g., power: sum core power → socket power)\n// - AvgAggregation: Average values (e.g., temperature: average core temps → socket temp)\ntype AggregationStrategy int\n\nconst (\n\tNoAggregation AggregationStrategy = iota // Do not aggregate\n\tSumAggregation // Sum values (e.g., power, energy)\n\tAvgAggregation // Average values (e.g., temperature, utilization)\n)\n\n// AssignAggregationStrategy parses a string into an AggregationStrategy value.\n//\n// Used when loading metric configurations from JSON/YAML files.\n//\n// Parameters:\n// - str: \"sum\", \"avg\", or \"\" (empty string for NoAggregation)\n//\n// Returns:\n// - AggregationStrategy: Parsed value\n// - error: Non-nil if str is unrecognized\nfunc AssignAggregationStrategy(str string) (AggregationStrategy, error) {\n\tswitch str {\n\tcase \"\":\n\t\treturn NoAggregation, nil\n\tcase \"sum\":\n\t\treturn SumAggregation, nil\n\tcase \"avg\":\n\t\treturn AvgAggregation, nil\n\tdefault:\n\t\treturn NoAggregation, fmt.Errorf(\"[METRICSTORE]> unknown aggregation strategy: %s\", str)\n\t}\n}\n\n// MetricConfig defines configuration for a single metric type.\n//\n// Stored in the global Metrics map, keyed by metric name (e.g., \"cpu_load\").\n//\n// Fields:\n// - Frequency: Measurement interval in seconds (e.g., 60 for 1-minute granularity)\n// - Aggregation: How to combine values across hierarchy levels (sum/avg/none)\n// - offset: Internal index into Level.metrics slice (assigned during Init)\ntype MetricConfig struct {\n\t// Interval in seconds at which measurements are stored\n\tFrequency int64\n\n\t// Can be 'sum', 'avg' or null. Describes how to aggregate metrics from the same timestep over the hierarchy.\n\tAggregation AggregationStrategy\n\n\t// Private, used internally...\n\toffset int\n}\n\nfunc BuildMetricList() map[string]MetricConfig {\n\tvar metrics map[string]MetricConfig = make(map[string]MetricConfig)\n\n\taddMetric := func(name string, metric MetricConfig) error {\n\t\tif metrics == nil {\n\t\t\tmetrics = make(map[string]MetricConfig, 0)\n\t\t}\n\n\t\tif existingMetric, ok := metrics[name]; ok {\n\t\t\tif existingMetric.Frequency != metric.Frequency {\n\t\t\t\tif existingMetric.Frequency < metric.Frequency {\n\t\t\t\t\texistingMetric.Frequency = metric.Frequency\n\t\t\t\t\tmetrics[name] = existingMetric\n\t\t\t\t}\n\t\t\t}\n\t\t} else {\n\t\t\tmetrics[name] = metric\n\t\t}\n\n\t\treturn nil\n\t}\n\n\t// Helper function to add metric configuration\n\taddMetricConfig := func(mc *schema.MetricConfig) {\n\t\tagg, err := AssignAggregationStrategy(mc.Aggregation)\n\t\tif err != nil {\n\t\t\tcclog.Warnf(\"Could not find aggregation strategy for metric config '%s': %s\", mc.Name, err.Error())\n\t\t}\n\n\t\taddMetric(mc.Name, MetricConfig{\n\t\t\tFrequency: int64(mc.Timestep),\n\t\t\tAggregation: agg,\n\t\t})\n\t}\n\tfor _, c := range archive.Clusters {\n\t\tfor _, mc := range c.MetricConfig {\n\t\t\taddMetricConfig(mc)\n\t\t}\n\n\t\tfor _, sc := range c.SubClusters {\n\t\t\tfor _, mc := range sc.MetricConfig {\n\t\t\t\taddMetricConfig(mc)\n\t\t\t}\n\t\t}\n\t}\n\n\treturn metrics\n}\n","structuredPatch":[{"oldStart":61,"oldLines":12,"newStart":61,"newLines":10,"lines":[" // Checkpoints configures periodic persistence of in-memory metric data."," //"," // Fields:","-// - FileFormat: \"json\" (human-readable, periodic) or \"wal\" (binary snapshot + WAL, crash-safe)","-// - Interval: Duration string (e.g., \"1h\", \"30m\") between checkpoint saves","+// - FileFormat: \"json\" (human-readable, periodic) or \"wal\" (binary snapshot + WAL, crash-safe); default is \"wal\""," // - RootDir: Filesystem path for checkpoint files (created if missing)"," type Checkpoints struct {"," FileFormat string `json:\"file-format\"`","- Interval string `json:\"interval\"`"," RootDir string `json:\"directory\"`"," }"," "]}],"userModified":false,"replaceAll":false},"sourceToolAssistantUUID":"2b788e37-1905-4d29-a5d6-73c9cf073924"} +{"parentUuid":"8444002f-88da-4fa7-a5bc-00fb6009e385","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","message":{"model":"claude-sonnet-4-6","id":"msg_01Ng9nUJVTRvzUZjTHjZ5tC6","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01GKDe2eQKcTmxdZ3vpa8QTw","name":"Edit","input":{"replace_all":false,"file_path":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/config.go","old_string":"// Archive configures long-term storage of old metric data.\n//\n// Data older than RetentionInMemory is archived to disk or deleted.\n//\n// Fields:\n// - ArchiveInterval: Duration string (e.g., \"24h\") between archive operations\n// - RootDir: Filesystem path for archived data (created if missing)\n// - DeleteInstead: If true, delete old data instead of archiving (saves disk space)\ntype Cleanup struct {\n\tInterval string `json:\"interval\"`\n\tRootDir string `json:\"directory\"`\n\tMode string `json:\"mode\"`\n}","new_string":"// Cleanup configures long-term storage of old metric data.\n//\n// Data older than RetentionInMemory is archived to disk or deleted.\n// The cleanup interval is always RetentionInMemory.\n//\n// Fields:\n// - RootDir: Filesystem path for archived data (used in \"archive\" mode)\n// - Mode: \"delete\" (discard old data) or \"archive\" (write to RootDir)\ntype Cleanup struct {\n\tRootDir string `json:\"directory\"`\n\tMode string `json:\"mode\"`\n}"},"caller":{"type":"direct"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":882,"cache_read_input_tokens":46640,"output_tokens":410,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":882,"ephemeral_5m_input_tokens":0},"inference_geo":"","iterations":[],"speed":"standard"}},"requestId":"req_011CYhoNwg2g5oNvMfzfAiYg","type":"assistant","uuid":"73497a6b-9d48-4abd-8c6a-27557ad5fc2e","timestamp":"2026-03-04T09:26:18.680Z"} +{"parentUuid":"73497a6b-9d48-4abd-8c6a-27557ad5fc2e","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","type":"progress","data":{"type":"hook_progress","hookEvent":"PostToolUse","hookName":"PostToolUse:Edit","command":"callback"},"parentToolUseID":"toolu_01GKDe2eQKcTmxdZ3vpa8QTw","toolUseID":"toolu_01GKDe2eQKcTmxdZ3vpa8QTw","timestamp":"2026-03-04T09:26:18.708Z","uuid":"482092d9-4718-4b5e-9fac-0a75b93ecb46"} +{"parentUuid":"73497a6b-9d48-4abd-8c6a-27557ad5fc2e","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01GKDe2eQKcTmxdZ3vpa8QTw","type":"tool_result","content":"The file /Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/config.go has been updated successfully."}]},"uuid":"703a07e2-a07d-45b1-a3a9-ffe2f1961729","timestamp":"2026-03-04T09:26:18.708Z","toolUseResult":{"filePath":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/config.go","oldString":"// Archive configures long-term storage of old metric data.\n//\n// Data older than RetentionInMemory is archived to disk or deleted.\n//\n// Fields:\n// - ArchiveInterval: Duration string (e.g., \"24h\") between archive operations\n// - RootDir: Filesystem path for archived data (created if missing)\n// - DeleteInstead: If true, delete old data instead of archiving (saves disk space)\ntype Cleanup struct {\n\tInterval string `json:\"interval\"`\n\tRootDir string `json:\"directory\"`\n\tMode string `json:\"mode\"`\n}","newString":"// Cleanup configures long-term storage of old metric data.\n//\n// Data older than RetentionInMemory is archived to disk or deleted.\n// The cleanup interval is always RetentionInMemory.\n//\n// Fields:\n// - RootDir: Filesystem path for archived data (used in \"archive\" mode)\n// - Mode: \"delete\" (discard old data) or \"archive\" (write to RootDir)\ntype Cleanup struct {\n\tRootDir string `json:\"directory\"`\n\tMode string `json:\"mode\"`\n}","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\n// Package metricstore provides config.go: Configuration structures and metric management.\n//\n// # Configuration Hierarchy\n//\n// The metricstore package uses nested configuration structures:\n//\n//\tMetricStoreConfig (Keys)\n//\t├─ NumWorkers: Parallel checkpoint/archive workers\n//\t├─ RetentionInMemory: How long to keep data in RAM\n//\t├─ MemoryCap: Memory limit in bytes (triggers forceFree)\n//\t├─ Checkpoints: Persistence configuration\n//\t│ ├─ FileFormat: \"json\" or \"wal\"\n//\t│ ├─ Interval: How often to save (e.g., \"1h\")\n//\t│ └─ RootDir: Checkpoint storage path\n//\t├─ Cleanup: Long-term storage configuration\n//\t│ ├─ Interval: How often to delete/archive\n//\t│ ├─ RootDir: Archive storage path\n//\t│ └─ Mode: \"delete\" or \"archive\"\n//\t├─ Debug: Development/debugging options\n//\t└─ Subscriptions: NATS topic subscriptions for metric ingestion\n//\n// # Metric Configuration\n//\n// Each metric (e.g., \"cpu_load\", \"mem_used\") has a MetricConfig entry in the global\n// Metrics map, defining:\n//\n// - Frequency: Measurement interval in seconds\n// - Aggregation: How to combine values (sum/avg/none) when transforming scopes\n// - offset: Internal index into Level.metrics slice (assigned during Init)\n//\n// # AggregationStrategy\n//\n// Determines how to combine metric values when aggregating from finer to coarser scopes:\n//\n// - NoAggregation: Do not combine (incompatible scopes)\n// - SumAggregation: Add values (e.g., power consumption: core→socket)\n// - AvgAggregation: Average values (e.g., temperature: core→socket)\npackage metricstore\n\nimport (\n\t\"fmt\"\n\t\"time\"\n\n\t\"github.com/ClusterCockpit/cc-backend/pkg/archive\"\n\tcclog \"github.com/ClusterCockpit/cc-lib/v2/ccLogger\"\n\t\"github.com/ClusterCockpit/cc-lib/v2/schema\"\n)\n\nconst (\n\tDefaultMaxWorkers = 10\n\tDefaultBufferCapacity = 512\n\tDefaultGCTriggerInterval = 100\n\tDefaultMemoryUsageTrackerInterval = 1 * time.Hour\n)\n\n// Checkpoints configures periodic persistence of in-memory metric data.\n//\n// Fields:\n// - FileFormat: \"json\" (human-readable, periodic) or \"wal\" (binary snapshot + WAL, crash-safe); default is \"wal\"\n// - RootDir: Filesystem path for checkpoint files (created if missing)\ntype Checkpoints struct {\n\tFileFormat string `json:\"file-format\"`\n\tRootDir string `json:\"directory\"`\n}\n\n// Debug provides development and profiling options.\n//\n// Fields:\n// - DumpToFile: Path to dump checkpoint data for inspection (empty = disabled)\n// - EnableGops: Enable gops agent for live runtime debugging (https://github.com/google/gops)\ntype Debug struct {\n\tDumpToFile string `json:\"dump-to-file\"`\n\tEnableGops bool `json:\"gops\"`\n}\n\n// Archive configures long-term storage of old metric data.\n//\n// Data older than RetentionInMemory is archived to disk or deleted.\n//\n// Fields:\n// - ArchiveInterval: Duration string (e.g., \"24h\") between archive operations\n// - RootDir: Filesystem path for archived data (created if missing)\n// - DeleteInstead: If true, delete old data instead of archiving (saves disk space)\ntype Cleanup struct {\n\tInterval string `json:\"interval\"`\n\tRootDir string `json:\"directory\"`\n\tMode string `json:\"mode\"`\n}\n\n// Subscriptions defines NATS topics to subscribe to for metric ingestion.\n//\n// Each subscription receives metrics via NATS messaging, enabling real-time\n// data collection from compute nodes.\n//\n// Fields:\n// - SubscribeTo: NATS subject/channel name (e.g., \"metrics.compute.*\")\n// - ClusterTag: Default cluster name for metrics without cluster tag (optional)\ntype Subscriptions []struct {\n\t// Channel name\n\tSubscribeTo string `json:\"subscribe-to\"`\n\n\t// Allow lines without a cluster tag, use this as default, optional\n\tClusterTag string `json:\"cluster-tag\"`\n}\n\n// MetricStoreConfig defines the main configuration for the metricstore.\n//\n// Loaded from cc-backend's config.json \"metricstore\" section. Controls memory usage,\n// persistence, archiving, and metric ingestion.\n//\n// Fields:\n// - NumWorkers: Parallel workers for checkpoint/archive (0 = auto: min(NumCPU/2+1, 10))\n// - RetentionInMemory: Duration string (e.g., \"48h\") for in-memory data retention\n// - MemoryCap: Max bytes for buffer data (0 = unlimited); triggers forceFree when exceeded\n// - Checkpoints: Periodic persistence configuration\n// - Debug: Development/profiling options (nil = disabled)\n// - Archive: Long-term storage configuration (nil = disabled)\n// - Subscriptions: NATS topics for metric ingestion (nil = polling only)\ntype MetricStoreConfig struct {\n\t// Number of concurrent workers for checkpoint and archive operations.\n\t// If not set or 0, defaults to min(runtime.NumCPU()/2+1, 10)\n\tNumWorkers int `json:\"num-workers\"`\n\tRetentionInMemory string `json:\"retention-in-memory\"`\n\tMemoryCap int `json:\"memory-cap\"`\n\tCheckpoints Checkpoints `json:\"checkpoints\"`\n\tDebug *Debug `json:\"debug\"`\n\tCleanup *Cleanup `json:\"cleanup\"`\n\tSubscriptions *Subscriptions `json:\"nats-subscriptions\"`\n}\n\n// Keys is the global metricstore configuration instance.\n//\n// Initialized with defaults, then overwritten by cc-backend's config.json.\n// Accessed by Init(), Checkpointing(), and other lifecycle functions.\nvar Keys MetricStoreConfig = MetricStoreConfig{\n\tCheckpoints: Checkpoints{\n\t\tFileFormat: \"json\",\n\t\tRootDir: \"./var/checkpoints\",\n\t},\n\tCleanup: &Cleanup{\n\t\tMode: \"delete\",\n\t},\n}\n\n// AggregationStrategy defines how to combine metric values across hierarchy levels.\n//\n// Used when transforming data from finer-grained scopes (e.g., core) to coarser scopes\n// (e.g., socket). This is SPATIAL aggregation, not TEMPORAL (time-based) aggregation.\n//\n// Values:\n// - NoAggregation: Do not aggregate (incompatible scopes or non-aggregatable metrics)\n// - SumAggregation: Add values (e.g., power: sum core power → socket power)\n// - AvgAggregation: Average values (e.g., temperature: average core temps → socket temp)\ntype AggregationStrategy int\n\nconst (\n\tNoAggregation AggregationStrategy = iota // Do not aggregate\n\tSumAggregation // Sum values (e.g., power, energy)\n\tAvgAggregation // Average values (e.g., temperature, utilization)\n)\n\n// AssignAggregationStrategy parses a string into an AggregationStrategy value.\n//\n// Used when loading metric configurations from JSON/YAML files.\n//\n// Parameters:\n// - str: \"sum\", \"avg\", or \"\" (empty string for NoAggregation)\n//\n// Returns:\n// - AggregationStrategy: Parsed value\n// - error: Non-nil if str is unrecognized\nfunc AssignAggregationStrategy(str string) (AggregationStrategy, error) {\n\tswitch str {\n\tcase \"\":\n\t\treturn NoAggregation, nil\n\tcase \"sum\":\n\t\treturn SumAggregation, nil\n\tcase \"avg\":\n\t\treturn AvgAggregation, nil\n\tdefault:\n\t\treturn NoAggregation, fmt.Errorf(\"[METRICSTORE]> unknown aggregation strategy: %s\", str)\n\t}\n}\n\n// MetricConfig defines configuration for a single metric type.\n//\n// Stored in the global Metrics map, keyed by metric name (e.g., \"cpu_load\").\n//\n// Fields:\n// - Frequency: Measurement interval in seconds (e.g., 60 for 1-minute granularity)\n// - Aggregation: How to combine values across hierarchy levels (sum/avg/none)\n// - offset: Internal index into Level.metrics slice (assigned during Init)\ntype MetricConfig struct {\n\t// Interval in seconds at which measurements are stored\n\tFrequency int64\n\n\t// Can be 'sum', 'avg' or null. Describes how to aggregate metrics from the same timestep over the hierarchy.\n\tAggregation AggregationStrategy\n\n\t// Private, used internally...\n\toffset int\n}\n\nfunc BuildMetricList() map[string]MetricConfig {\n\tvar metrics map[string]MetricConfig = make(map[string]MetricConfig)\n\n\taddMetric := func(name string, metric MetricConfig) error {\n\t\tif metrics == nil {\n\t\t\tmetrics = make(map[string]MetricConfig, 0)\n\t\t}\n\n\t\tif existingMetric, ok := metrics[name]; ok {\n\t\t\tif existingMetric.Frequency != metric.Frequency {\n\t\t\t\tif existingMetric.Frequency < metric.Frequency {\n\t\t\t\t\texistingMetric.Frequency = metric.Frequency\n\t\t\t\t\tmetrics[name] = existingMetric\n\t\t\t\t}\n\t\t\t}\n\t\t} else {\n\t\t\tmetrics[name] = metric\n\t\t}\n\n\t\treturn nil\n\t}\n\n\t// Helper function to add metric configuration\n\taddMetricConfig := func(mc *schema.MetricConfig) {\n\t\tagg, err := AssignAggregationStrategy(mc.Aggregation)\n\t\tif err != nil {\n\t\t\tcclog.Warnf(\"Could not find aggregation strategy for metric config '%s': %s\", mc.Name, err.Error())\n\t\t}\n\n\t\taddMetric(mc.Name, MetricConfig{\n\t\t\tFrequency: int64(mc.Timestep),\n\t\t\tAggregation: agg,\n\t\t})\n\t}\n\tfor _, c := range archive.Clusters {\n\t\tfor _, mc := range c.MetricConfig {\n\t\t\taddMetricConfig(mc)\n\t\t}\n\n\t\tfor _, sc := range c.SubClusters {\n\t\t\tfor _, mc := range sc.MetricConfig {\n\t\t\t\taddMetricConfig(mc)\n\t\t\t}\n\t\t}\n\t}\n\n\treturn metrics\n}\n","structuredPatch":[{"oldStart":78,"oldLines":18,"newStart":78,"newLines":17,"lines":[" EnableGops bool `json:\"gops\"`"," }"," ","-// Archive configures long-term storage of old metric data.","+// Cleanup configures long-term storage of old metric data."," //"," // Data older than RetentionInMemory is archived to disk or deleted.","+// The cleanup interval is always RetentionInMemory."," //"," // Fields:","-// - ArchiveInterval: Duration string (e.g., \"24h\") between archive operations","-// - RootDir: Filesystem path for archived data (created if missing)","-// - DeleteInstead: If true, delete old data instead of archiving (saves disk space)","+// - RootDir: Filesystem path for archived data (used in \"archive\" mode)","+// - Mode: \"delete\" (discard old data) or \"archive\" (write to RootDir)"," type Cleanup struct {","- Interval string `json:\"interval\"`","- RootDir string `json:\"directory\"`","- Mode string `json:\"mode\"`","+ RootDir string `json:\"directory\"`","+ Mode string `json:\"mode\"`"," }"," "," // Subscriptions defines NATS topics to subscribe to for metric ingestion."]}],"userModified":false,"replaceAll":false},"sourceToolAssistantUUID":"73497a6b-9d48-4abd-8c6a-27557ad5fc2e"} +{"parentUuid":"703a07e2-a07d-45b1-a3a9-ffe2f1961729","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","message":{"model":"claude-sonnet-4-6","id":"msg_01JZntJZFJddzUeqM2bbmNZW","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_014MMupuq6GRsCswPEiiwtEw","name":"Edit","input":{"replace_all":false,"file_path":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/config.go","old_string":"var Keys MetricStoreConfig = MetricStoreConfig{\n\tCheckpoints: Checkpoints{\n\t\tFileFormat: \"json\",\n\t\tRootDir: \"./var/checkpoints\",\n\t},","new_string":"var Keys MetricStoreConfig = MetricStoreConfig{\n\tCheckpoints: Checkpoints{\n\t\tFileFormat: \"wal\",\n\t\tRootDir: \"./var/checkpoints\",\n\t},"},"caller":{"type":"direct"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":455,"cache_read_input_tokens":47522,"output_tokens":231,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":455,"ephemeral_5m_input_tokens":0},"inference_geo":"","iterations":[],"speed":"standard"}},"requestId":"req_011CYhoPeBqgvZWSwaEaL5PX","type":"assistant","uuid":"c327c16f-475f-43e6-a8c8-9f56634f8809","timestamp":"2026-03-04T09:26:22.541Z"} +{"parentUuid":"c327c16f-475f-43e6-a8c8-9f56634f8809","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","type":"progress","data":{"type":"hook_progress","hookEvent":"PostToolUse","hookName":"PostToolUse:Edit","command":"callback"},"parentToolUseID":"toolu_014MMupuq6GRsCswPEiiwtEw","toolUseID":"toolu_014MMupuq6GRsCswPEiiwtEw","timestamp":"2026-03-04T09:26:22.564Z","uuid":"bf1fece2-3f71-4176-b85a-11721336a12f"} +{"parentUuid":"c327c16f-475f-43e6-a8c8-9f56634f8809","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_014MMupuq6GRsCswPEiiwtEw","type":"tool_result","content":"The file /Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/config.go has been updated successfully."}]},"uuid":"581f145c-e67e-4e6a-8165-f2e6e0547b12","timestamp":"2026-03-04T09:26:22.564Z","toolUseResult":{"filePath":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/config.go","oldString":"var Keys MetricStoreConfig = MetricStoreConfig{\n\tCheckpoints: Checkpoints{\n\t\tFileFormat: \"json\",\n\t\tRootDir: \"./var/checkpoints\",\n\t},","newString":"var Keys MetricStoreConfig = MetricStoreConfig{\n\tCheckpoints: Checkpoints{\n\t\tFileFormat: \"wal\",\n\t\tRootDir: \"./var/checkpoints\",\n\t},","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\n// Package metricstore provides config.go: Configuration structures and metric management.\n//\n// # Configuration Hierarchy\n//\n// The metricstore package uses nested configuration structures:\n//\n//\tMetricStoreConfig (Keys)\n//\t├─ NumWorkers: Parallel checkpoint/archive workers\n//\t├─ RetentionInMemory: How long to keep data in RAM\n//\t├─ MemoryCap: Memory limit in bytes (triggers forceFree)\n//\t├─ Checkpoints: Persistence configuration\n//\t│ ├─ FileFormat: \"json\" or \"wal\"\n//\t│ ├─ Interval: How often to save (e.g., \"1h\")\n//\t│ └─ RootDir: Checkpoint storage path\n//\t├─ Cleanup: Long-term storage configuration\n//\t│ ├─ Interval: How often to delete/archive\n//\t│ ├─ RootDir: Archive storage path\n//\t│ └─ Mode: \"delete\" or \"archive\"\n//\t├─ Debug: Development/debugging options\n//\t└─ Subscriptions: NATS topic subscriptions for metric ingestion\n//\n// # Metric Configuration\n//\n// Each metric (e.g., \"cpu_load\", \"mem_used\") has a MetricConfig entry in the global\n// Metrics map, defining:\n//\n// - Frequency: Measurement interval in seconds\n// - Aggregation: How to combine values (sum/avg/none) when transforming scopes\n// - offset: Internal index into Level.metrics slice (assigned during Init)\n//\n// # AggregationStrategy\n//\n// Determines how to combine metric values when aggregating from finer to coarser scopes:\n//\n// - NoAggregation: Do not combine (incompatible scopes)\n// - SumAggregation: Add values (e.g., power consumption: core→socket)\n// - AvgAggregation: Average values (e.g., temperature: core→socket)\npackage metricstore\n\nimport (\n\t\"fmt\"\n\t\"time\"\n\n\t\"github.com/ClusterCockpit/cc-backend/pkg/archive\"\n\tcclog \"github.com/ClusterCockpit/cc-lib/v2/ccLogger\"\n\t\"github.com/ClusterCockpit/cc-lib/v2/schema\"\n)\n\nconst (\n\tDefaultMaxWorkers = 10\n\tDefaultBufferCapacity = 512\n\tDefaultGCTriggerInterval = 100\n\tDefaultMemoryUsageTrackerInterval = 1 * time.Hour\n)\n\n// Checkpoints configures periodic persistence of in-memory metric data.\n//\n// Fields:\n// - FileFormat: \"json\" (human-readable, periodic) or \"wal\" (binary snapshot + WAL, crash-safe); default is \"wal\"\n// - RootDir: Filesystem path for checkpoint files (created if missing)\ntype Checkpoints struct {\n\tFileFormat string `json:\"file-format\"`\n\tRootDir string `json:\"directory\"`\n}\n\n// Debug provides development and profiling options.\n//\n// Fields:\n// - DumpToFile: Path to dump checkpoint data for inspection (empty = disabled)\n// - EnableGops: Enable gops agent for live runtime debugging (https://github.com/google/gops)\ntype Debug struct {\n\tDumpToFile string `json:\"dump-to-file\"`\n\tEnableGops bool `json:\"gops\"`\n}\n\n// Cleanup configures long-term storage of old metric data.\n//\n// Data older than RetentionInMemory is archived to disk or deleted.\n// The cleanup interval is always RetentionInMemory.\n//\n// Fields:\n// - RootDir: Filesystem path for archived data (used in \"archive\" mode)\n// - Mode: \"delete\" (discard old data) or \"archive\" (write to RootDir)\ntype Cleanup struct {\n\tRootDir string `json:\"directory\"`\n\tMode string `json:\"mode\"`\n}\n\n// Subscriptions defines NATS topics to subscribe to for metric ingestion.\n//\n// Each subscription receives metrics via NATS messaging, enabling real-time\n// data collection from compute nodes.\n//\n// Fields:\n// - SubscribeTo: NATS subject/channel name (e.g., \"metrics.compute.*\")\n// - ClusterTag: Default cluster name for metrics without cluster tag (optional)\ntype Subscriptions []struct {\n\t// Channel name\n\tSubscribeTo string `json:\"subscribe-to\"`\n\n\t// Allow lines without a cluster tag, use this as default, optional\n\tClusterTag string `json:\"cluster-tag\"`\n}\n\n// MetricStoreConfig defines the main configuration for the metricstore.\n//\n// Loaded from cc-backend's config.json \"metricstore\" section. Controls memory usage,\n// persistence, archiving, and metric ingestion.\n//\n// Fields:\n// - NumWorkers: Parallel workers for checkpoint/archive (0 = auto: min(NumCPU/2+1, 10))\n// - RetentionInMemory: Duration string (e.g., \"48h\") for in-memory data retention\n// - MemoryCap: Max bytes for buffer data (0 = unlimited); triggers forceFree when exceeded\n// - Checkpoints: Periodic persistence configuration\n// - Debug: Development/profiling options (nil = disabled)\n// - Archive: Long-term storage configuration (nil = disabled)\n// - Subscriptions: NATS topics for metric ingestion (nil = polling only)\ntype MetricStoreConfig struct {\n\t// Number of concurrent workers for checkpoint and archive operations.\n\t// If not set or 0, defaults to min(runtime.NumCPU()/2+1, 10)\n\tNumWorkers int `json:\"num-workers\"`\n\tRetentionInMemory string `json:\"retention-in-memory\"`\n\tMemoryCap int `json:\"memory-cap\"`\n\tCheckpoints Checkpoints `json:\"checkpoints\"`\n\tDebug *Debug `json:\"debug\"`\n\tCleanup *Cleanup `json:\"cleanup\"`\n\tSubscriptions *Subscriptions `json:\"nats-subscriptions\"`\n}\n\n// Keys is the global metricstore configuration instance.\n//\n// Initialized with defaults, then overwritten by cc-backend's config.json.\n// Accessed by Init(), Checkpointing(), and other lifecycle functions.\nvar Keys MetricStoreConfig = MetricStoreConfig{\n\tCheckpoints: Checkpoints{\n\t\tFileFormat: \"json\",\n\t\tRootDir: \"./var/checkpoints\",\n\t},\n\tCleanup: &Cleanup{\n\t\tMode: \"delete\",\n\t},\n}\n\n// AggregationStrategy defines how to combine metric values across hierarchy levels.\n//\n// Used when transforming data from finer-grained scopes (e.g., core) to coarser scopes\n// (e.g., socket). This is SPATIAL aggregation, not TEMPORAL (time-based) aggregation.\n//\n// Values:\n// - NoAggregation: Do not aggregate (incompatible scopes or non-aggregatable metrics)\n// - SumAggregation: Add values (e.g., power: sum core power → socket power)\n// - AvgAggregation: Average values (e.g., temperature: average core temps → socket temp)\ntype AggregationStrategy int\n\nconst (\n\tNoAggregation AggregationStrategy = iota // Do not aggregate\n\tSumAggregation // Sum values (e.g., power, energy)\n\tAvgAggregation // Average values (e.g., temperature, utilization)\n)\n\n// AssignAggregationStrategy parses a string into an AggregationStrategy value.\n//\n// Used when loading metric configurations from JSON/YAML files.\n//\n// Parameters:\n// - str: \"sum\", \"avg\", or \"\" (empty string for NoAggregation)\n//\n// Returns:\n// - AggregationStrategy: Parsed value\n// - error: Non-nil if str is unrecognized\nfunc AssignAggregationStrategy(str string) (AggregationStrategy, error) {\n\tswitch str {\n\tcase \"\":\n\t\treturn NoAggregation, nil\n\tcase \"sum\":\n\t\treturn SumAggregation, nil\n\tcase \"avg\":\n\t\treturn AvgAggregation, nil\n\tdefault:\n\t\treturn NoAggregation, fmt.Errorf(\"[METRICSTORE]> unknown aggregation strategy: %s\", str)\n\t}\n}\n\n// MetricConfig defines configuration for a single metric type.\n//\n// Stored in the global Metrics map, keyed by metric name (e.g., \"cpu_load\").\n//\n// Fields:\n// - Frequency: Measurement interval in seconds (e.g., 60 for 1-minute granularity)\n// - Aggregation: How to combine values across hierarchy levels (sum/avg/none)\n// - offset: Internal index into Level.metrics slice (assigned during Init)\ntype MetricConfig struct {\n\t// Interval in seconds at which measurements are stored\n\tFrequency int64\n\n\t// Can be 'sum', 'avg' or null. Describes how to aggregate metrics from the same timestep over the hierarchy.\n\tAggregation AggregationStrategy\n\n\t// Private, used internally...\n\toffset int\n}\n\nfunc BuildMetricList() map[string]MetricConfig {\n\tvar metrics map[string]MetricConfig = make(map[string]MetricConfig)\n\n\taddMetric := func(name string, metric MetricConfig) error {\n\t\tif metrics == nil {\n\t\t\tmetrics = make(map[string]MetricConfig, 0)\n\t\t}\n\n\t\tif existingMetric, ok := metrics[name]; ok {\n\t\t\tif existingMetric.Frequency != metric.Frequency {\n\t\t\t\tif existingMetric.Frequency < metric.Frequency {\n\t\t\t\t\texistingMetric.Frequency = metric.Frequency\n\t\t\t\t\tmetrics[name] = existingMetric\n\t\t\t\t}\n\t\t\t}\n\t\t} else {\n\t\t\tmetrics[name] = metric\n\t\t}\n\n\t\treturn nil\n\t}\n\n\t// Helper function to add metric configuration\n\taddMetricConfig := func(mc *schema.MetricConfig) {\n\t\tagg, err := AssignAggregationStrategy(mc.Aggregation)\n\t\tif err != nil {\n\t\t\tcclog.Warnf(\"Could not find aggregation strategy for metric config '%s': %s\", mc.Name, err.Error())\n\t\t}\n\n\t\taddMetric(mc.Name, MetricConfig{\n\t\t\tFrequency: int64(mc.Timestep),\n\t\t\tAggregation: agg,\n\t\t})\n\t}\n\tfor _, c := range archive.Clusters {\n\t\tfor _, mc := range c.MetricConfig {\n\t\t\taddMetricConfig(mc)\n\t\t}\n\n\t\tfor _, sc := range c.SubClusters {\n\t\t\tfor _, mc := range sc.MetricConfig {\n\t\t\t\taddMetricConfig(mc)\n\t\t\t}\n\t\t}\n\t}\n\n\treturn metrics\n}\n","structuredPatch":[{"oldStart":138,"oldLines":7,"newStart":138,"newLines":7,"lines":[" // Accessed by Init(), Checkpointing(), and other lifecycle functions."," var Keys MetricStoreConfig = MetricStoreConfig{"," Checkpoints: Checkpoints{","- FileFormat: \"json\",","+ FileFormat: \"wal\","," RootDir: \"./var/checkpoints\","," },"," Cleanup: &Cleanup{"]}],"userModified":false,"replaceAll":false},"sourceToolAssistantUUID":"c327c16f-475f-43e6-a8c8-9f56634f8809"} +{"parentUuid":"581f145c-e67e-4e6a-8165-f2e6e0547b12","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","message":{"model":"claude-sonnet-4-6","id":"msg_01SJu1U6cp25cbpzJG2GwATA","type":"message","role":"assistant","content":[{"type":"text","text":"Now update the hierarchy comment. Let me read the exact content:"}],"stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":276,"cache_read_input_tokens":47977,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":276},"output_tokens":2,"service_tier":"standard","inference_geo":"not_available"}},"requestId":"req_011CYhoPvfY7CxqU39qVQunX","type":"assistant","uuid":"98232e41-b235-4941-88cc-d7881b2ba2e6","timestamp":"2026-03-04T09:26:25.071Z"} +{"parentUuid":"98232e41-b235-4941-88cc-d7881b2ba2e6","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","message":{"model":"claude-sonnet-4-6","id":"msg_01SJu1U6cp25cbpzJG2GwATA","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01PfeEbsNZvEAPM4H33nMbou","name":"Read","input":{"file_path":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/config.go","limit":30,"offset":7},"caller":{"type":"direct"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":276,"cache_read_input_tokens":47977,"output_tokens":127,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":276,"ephemeral_5m_input_tokens":0},"inference_geo":"","iterations":[],"speed":"standard"}},"requestId":"req_011CYhoPvfY7CxqU39qVQunX","type":"assistant","uuid":"5126d816-b062-499f-bf6b-3ca354fd947b","timestamp":"2026-03-04T09:26:25.686Z"} +{"parentUuid":"5126d816-b062-499f-bf6b-3ca354fd947b","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","type":"progress","data":{"type":"hook_progress","hookEvent":"PostToolUse","hookName":"PostToolUse:Read","command":"callback"},"parentToolUseID":"toolu_01PfeEbsNZvEAPM4H33nMbou","toolUseID":"toolu_01PfeEbsNZvEAPM4H33nMbou","timestamp":"2026-03-04T09:26:25.697Z","uuid":"6b172ccb-d573-43c3-9c6e-c751e98f1984"} +{"parentUuid":"5126d816-b062-499f-bf6b-3ca354fd947b","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01PfeEbsNZvEAPM4H33nMbou","type":"tool_result","content":" 7→//\n 8→// # Configuration Hierarchy\n 9→//\n 10→// The metricstore package uses nested configuration structures:\n 11→//\n 12→//\tMetricStoreConfig (Keys)\n 13→//\t├─ NumWorkers: Parallel checkpoint/archive workers\n 14→//\t├─ RetentionInMemory: How long to keep data in RAM\n 15→//\t├─ MemoryCap: Memory limit in bytes (triggers forceFree)\n 16→//\t├─ Checkpoints: Persistence configuration\n 17→//\t│ ├─ FileFormat: \"json\" or \"wal\"\n 18→//\t│ ├─ Interval: How often to save (e.g., \"1h\")\n 19→//\t│ └─ RootDir: Checkpoint storage path\n 20→//\t├─ Cleanup: Long-term storage configuration\n 21→//\t│ ├─ Interval: How often to delete/archive\n 22→//\t│ ├─ RootDir: Archive storage path\n 23→//\t│ └─ Mode: \"delete\" or \"archive\"\n 24→//\t├─ Debug: Development/debugging options\n 25→//\t└─ Subscriptions: NATS topic subscriptions for metric ingestion\n 26→//\n 27→// # Metric Configuration\n 28→//\n 29→// Each metric (e.g., \"cpu_load\", \"mem_used\") has a MetricConfig entry in the global\n 30→// Metrics map, defining:\n 31→//\n 32→// - Frequency: Measurement interval in seconds\n 33→// - Aggregation: How to combine values (sum/avg/none) when transforming scopes\n 34→// - offset: Internal index into Level.metrics slice (assigned during Init)\n 35→//\n 36→// # AggregationStrategy\n\n\nWhenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.\n\n"}]},"uuid":"649d59a6-50d0-42fe-87f1-562f1ae4e1ab","timestamp":"2026-03-04T09:26:25.697Z","toolUseResult":{"type":"text","file":{"filePath":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/config.go","content":"//\n// # Configuration Hierarchy\n//\n// The metricstore package uses nested configuration structures:\n//\n//\tMetricStoreConfig (Keys)\n//\t├─ NumWorkers: Parallel checkpoint/archive workers\n//\t├─ RetentionInMemory: How long to keep data in RAM\n//\t├─ MemoryCap: Memory limit in bytes (triggers forceFree)\n//\t├─ Checkpoints: Persistence configuration\n//\t│ ├─ FileFormat: \"json\" or \"wal\"\n//\t│ ├─ Interval: How often to save (e.g., \"1h\")\n//\t│ └─ RootDir: Checkpoint storage path\n//\t├─ Cleanup: Long-term storage configuration\n//\t│ ├─ Interval: How often to delete/archive\n//\t│ ├─ RootDir: Archive storage path\n//\t│ └─ Mode: \"delete\" or \"archive\"\n//\t├─ Debug: Development/debugging options\n//\t└─ Subscriptions: NATS topic subscriptions for metric ingestion\n//\n// # Metric Configuration\n//\n// Each metric (e.g., \"cpu_load\", \"mem_used\") has a MetricConfig entry in the global\n// Metrics map, defining:\n//\n// - Frequency: Measurement interval in seconds\n// - Aggregation: How to combine values (sum/avg/none) when transforming scopes\n// - offset: Internal index into Level.metrics slice (assigned during Init)\n//\n// # AggregationStrategy","numLines":30,"startLine":7,"totalLines":256}},"sourceToolAssistantUUID":"5126d816-b062-499f-bf6b-3ca354fd947b"} +{"parentUuid":"649d59a6-50d0-42fe-87f1-562f1ae4e1ab","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","message":{"model":"claude-sonnet-4-6","id":"msg_01SL7JWBsPcsHoeypveN1uXA","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01BknZWC2p7oatcajoc2xCc4","name":"Edit","input":{"replace_all":false,"file_path":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/config.go","old_string":"//\t├─ Checkpoints: Persistence configuration\n//\t│ ├─ FileFormat: \"json\" or \"wal\"\n//\t│ ├─ Interval: How often to save (e.g., \"1h\")\n//\t│ └─ RootDir: Checkpoint storage path\n//\t├─ Cleanup: Long-term storage configuration\n//\t│ ├─ Interval: How often to delete/archive\n//\t│ ├─ RootDir: Archive storage path\n//\t│ └─ Mode: \"delete\" or \"archive\"","new_string":"//\t├─ Checkpoints: Persistence configuration\n//\t│ ├─ FileFormat: \"json\" or \"wal\" (default: \"wal\")\n//\t│ └─ RootDir: Checkpoint storage path\n//\t├─ Cleanup: Long-term storage configuration (interval = RetentionInMemory)\n//\t│ ├─ RootDir: Archive storage path (archive mode only)\n//\t│ └─ Mode: \"delete\" or \"archive\""},"caller":{"type":"direct"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":684,"cache_read_input_tokens":48253,"output_tokens":389,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":684,"ephemeral_5m_input_tokens":0},"inference_geo":"","iterations":[],"speed":"standard"}},"requestId":"req_011CYhoQAP3HiiqfZvnN7UgV","type":"assistant","uuid":"e347abb6-c5c7-4051-a3a6-4fffb1521782","timestamp":"2026-03-04T09:26:30.625Z"} +{"parentUuid":"e347abb6-c5c7-4051-a3a6-4fffb1521782","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","type":"progress","data":{"type":"hook_progress","hookEvent":"PostToolUse","hookName":"PostToolUse:Edit","command":"callback"},"parentToolUseID":"toolu_01BknZWC2p7oatcajoc2xCc4","toolUseID":"toolu_01BknZWC2p7oatcajoc2xCc4","timestamp":"2026-03-04T09:26:30.658Z","uuid":"ee277195-21d9-4fb0-91ed-3edbe47d768d"} +{"parentUuid":"e347abb6-c5c7-4051-a3a6-4fffb1521782","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01BknZWC2p7oatcajoc2xCc4","type":"tool_result","content":"The file /Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/config.go has been updated successfully."}]},"uuid":"4ee34a9e-1f56-47f0-9a6f-d692af8e7036","timestamp":"2026-03-04T09:26:30.657Z","toolUseResult":{"filePath":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/config.go","oldString":"//\t├─ Checkpoints: Persistence configuration\n//\t│ ├─ FileFormat: \"json\" or \"wal\"\n//\t│ ├─ Interval: How often to save (e.g., \"1h\")\n//\t│ └─ RootDir: Checkpoint storage path\n//\t├─ Cleanup: Long-term storage configuration\n//\t│ ├─ Interval: How often to delete/archive\n//\t│ ├─ RootDir: Archive storage path\n//\t│ └─ Mode: \"delete\" or \"archive\"","newString":"//\t├─ Checkpoints: Persistence configuration\n//\t│ ├─ FileFormat: \"json\" or \"wal\" (default: \"wal\")\n//\t│ └─ RootDir: Checkpoint storage path\n//\t├─ Cleanup: Long-term storage configuration (interval = RetentionInMemory)\n//\t│ ├─ RootDir: Archive storage path (archive mode only)\n//\t│ └─ Mode: \"delete\" or \"archive\"","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\n// Package metricstore provides config.go: Configuration structures and metric management.\n//\n// # Configuration Hierarchy\n//\n// The metricstore package uses nested configuration structures:\n//\n//\tMetricStoreConfig (Keys)\n//\t├─ NumWorkers: Parallel checkpoint/archive workers\n//\t├─ RetentionInMemory: How long to keep data in RAM\n//\t├─ MemoryCap: Memory limit in bytes (triggers forceFree)\n//\t├─ Checkpoints: Persistence configuration\n//\t│ ├─ FileFormat: \"json\" or \"wal\"\n//\t│ ├─ Interval: How often to save (e.g., \"1h\")\n//\t│ └─ RootDir: Checkpoint storage path\n//\t├─ Cleanup: Long-term storage configuration\n//\t│ ├─ Interval: How often to delete/archive\n//\t│ ├─ RootDir: Archive storage path\n//\t│ └─ Mode: \"delete\" or \"archive\"\n//\t├─ Debug: Development/debugging options\n//\t└─ Subscriptions: NATS topic subscriptions for metric ingestion\n//\n// # Metric Configuration\n//\n// Each metric (e.g., \"cpu_load\", \"mem_used\") has a MetricConfig entry in the global\n// Metrics map, defining:\n//\n// - Frequency: Measurement interval in seconds\n// - Aggregation: How to combine values (sum/avg/none) when transforming scopes\n// - offset: Internal index into Level.metrics slice (assigned during Init)\n//\n// # AggregationStrategy\n//\n// Determines how to combine metric values when aggregating from finer to coarser scopes:\n//\n// - NoAggregation: Do not combine (incompatible scopes)\n// - SumAggregation: Add values (e.g., power consumption: core→socket)\n// - AvgAggregation: Average values (e.g., temperature: core→socket)\npackage metricstore\n\nimport (\n\t\"fmt\"\n\t\"time\"\n\n\t\"github.com/ClusterCockpit/cc-backend/pkg/archive\"\n\tcclog \"github.com/ClusterCockpit/cc-lib/v2/ccLogger\"\n\t\"github.com/ClusterCockpit/cc-lib/v2/schema\"\n)\n\nconst (\n\tDefaultMaxWorkers = 10\n\tDefaultBufferCapacity = 512\n\tDefaultGCTriggerInterval = 100\n\tDefaultMemoryUsageTrackerInterval = 1 * time.Hour\n)\n\n// Checkpoints configures periodic persistence of in-memory metric data.\n//\n// Fields:\n// - FileFormat: \"json\" (human-readable, periodic) or \"wal\" (binary snapshot + WAL, crash-safe); default is \"wal\"\n// - RootDir: Filesystem path for checkpoint files (created if missing)\ntype Checkpoints struct {\n\tFileFormat string `json:\"file-format\"`\n\tRootDir string `json:\"directory\"`\n}\n\n// Debug provides development and profiling options.\n//\n// Fields:\n// - DumpToFile: Path to dump checkpoint data for inspection (empty = disabled)\n// - EnableGops: Enable gops agent for live runtime debugging (https://github.com/google/gops)\ntype Debug struct {\n\tDumpToFile string `json:\"dump-to-file\"`\n\tEnableGops bool `json:\"gops\"`\n}\n\n// Cleanup configures long-term storage of old metric data.\n//\n// Data older than RetentionInMemory is archived to disk or deleted.\n// The cleanup interval is always RetentionInMemory.\n//\n// Fields:\n// - RootDir: Filesystem path for archived data (used in \"archive\" mode)\n// - Mode: \"delete\" (discard old data) or \"archive\" (write to RootDir)\ntype Cleanup struct {\n\tRootDir string `json:\"directory\"`\n\tMode string `json:\"mode\"`\n}\n\n// Subscriptions defines NATS topics to subscribe to for metric ingestion.\n//\n// Each subscription receives metrics via NATS messaging, enabling real-time\n// data collection from compute nodes.\n//\n// Fields:\n// - SubscribeTo: NATS subject/channel name (e.g., \"metrics.compute.*\")\n// - ClusterTag: Default cluster name for metrics without cluster tag (optional)\ntype Subscriptions []struct {\n\t// Channel name\n\tSubscribeTo string `json:\"subscribe-to\"`\n\n\t// Allow lines without a cluster tag, use this as default, optional\n\tClusterTag string `json:\"cluster-tag\"`\n}\n\n// MetricStoreConfig defines the main configuration for the metricstore.\n//\n// Loaded from cc-backend's config.json \"metricstore\" section. Controls memory usage,\n// persistence, archiving, and metric ingestion.\n//\n// Fields:\n// - NumWorkers: Parallel workers for checkpoint/archive (0 = auto: min(NumCPU/2+1, 10))\n// - RetentionInMemory: Duration string (e.g., \"48h\") for in-memory data retention\n// - MemoryCap: Max bytes for buffer data (0 = unlimited); triggers forceFree when exceeded\n// - Checkpoints: Periodic persistence configuration\n// - Debug: Development/profiling options (nil = disabled)\n// - Archive: Long-term storage configuration (nil = disabled)\n// - Subscriptions: NATS topics for metric ingestion (nil = polling only)\ntype MetricStoreConfig struct {\n\t// Number of concurrent workers for checkpoint and archive operations.\n\t// If not set or 0, defaults to min(runtime.NumCPU()/2+1, 10)\n\tNumWorkers int `json:\"num-workers\"`\n\tRetentionInMemory string `json:\"retention-in-memory\"`\n\tMemoryCap int `json:\"memory-cap\"`\n\tCheckpoints Checkpoints `json:\"checkpoints\"`\n\tDebug *Debug `json:\"debug\"`\n\tCleanup *Cleanup `json:\"cleanup\"`\n\tSubscriptions *Subscriptions `json:\"nats-subscriptions\"`\n}\n\n// Keys is the global metricstore configuration instance.\n//\n// Initialized with defaults, then overwritten by cc-backend's config.json.\n// Accessed by Init(), Checkpointing(), and other lifecycle functions.\nvar Keys MetricStoreConfig = MetricStoreConfig{\n\tCheckpoints: Checkpoints{\n\t\tFileFormat: \"wal\",\n\t\tRootDir: \"./var/checkpoints\",\n\t},\n\tCleanup: &Cleanup{\n\t\tMode: \"delete\",\n\t},\n}\n\n// AggregationStrategy defines how to combine metric values across hierarchy levels.\n//\n// Used when transforming data from finer-grained scopes (e.g., core) to coarser scopes\n// (e.g., socket). This is SPATIAL aggregation, not TEMPORAL (time-based) aggregation.\n//\n// Values:\n// - NoAggregation: Do not aggregate (incompatible scopes or non-aggregatable metrics)\n// - SumAggregation: Add values (e.g., power: sum core power → socket power)\n// - AvgAggregation: Average values (e.g., temperature: average core temps → socket temp)\ntype AggregationStrategy int\n\nconst (\n\tNoAggregation AggregationStrategy = iota // Do not aggregate\n\tSumAggregation // Sum values (e.g., power, energy)\n\tAvgAggregation // Average values (e.g., temperature, utilization)\n)\n\n// AssignAggregationStrategy parses a string into an AggregationStrategy value.\n//\n// Used when loading metric configurations from JSON/YAML files.\n//\n// Parameters:\n// - str: \"sum\", \"avg\", or \"\" (empty string for NoAggregation)\n//\n// Returns:\n// - AggregationStrategy: Parsed value\n// - error: Non-nil if str is unrecognized\nfunc AssignAggregationStrategy(str string) (AggregationStrategy, error) {\n\tswitch str {\n\tcase \"\":\n\t\treturn NoAggregation, nil\n\tcase \"sum\":\n\t\treturn SumAggregation, nil\n\tcase \"avg\":\n\t\treturn AvgAggregation, nil\n\tdefault:\n\t\treturn NoAggregation, fmt.Errorf(\"[METRICSTORE]> unknown aggregation strategy: %s\", str)\n\t}\n}\n\n// MetricConfig defines configuration for a single metric type.\n//\n// Stored in the global Metrics map, keyed by metric name (e.g., \"cpu_load\").\n//\n// Fields:\n// - Frequency: Measurement interval in seconds (e.g., 60 for 1-minute granularity)\n// - Aggregation: How to combine values across hierarchy levels (sum/avg/none)\n// - offset: Internal index into Level.metrics slice (assigned during Init)\ntype MetricConfig struct {\n\t// Interval in seconds at which measurements are stored\n\tFrequency int64\n\n\t// Can be 'sum', 'avg' or null. Describes how to aggregate metrics from the same timestep over the hierarchy.\n\tAggregation AggregationStrategy\n\n\t// Private, used internally...\n\toffset int\n}\n\nfunc BuildMetricList() map[string]MetricConfig {\n\tvar metrics map[string]MetricConfig = make(map[string]MetricConfig)\n\n\taddMetric := func(name string, metric MetricConfig) error {\n\t\tif metrics == nil {\n\t\t\tmetrics = make(map[string]MetricConfig, 0)\n\t\t}\n\n\t\tif existingMetric, ok := metrics[name]; ok {\n\t\t\tif existingMetric.Frequency != metric.Frequency {\n\t\t\t\tif existingMetric.Frequency < metric.Frequency {\n\t\t\t\t\texistingMetric.Frequency = metric.Frequency\n\t\t\t\t\tmetrics[name] = existingMetric\n\t\t\t\t}\n\t\t\t}\n\t\t} else {\n\t\t\tmetrics[name] = metric\n\t\t}\n\n\t\treturn nil\n\t}\n\n\t// Helper function to add metric configuration\n\taddMetricConfig := func(mc *schema.MetricConfig) {\n\t\tagg, err := AssignAggregationStrategy(mc.Aggregation)\n\t\tif err != nil {\n\t\t\tcclog.Warnf(\"Could not find aggregation strategy for metric config '%s': %s\", mc.Name, err.Error())\n\t\t}\n\n\t\taddMetric(mc.Name, MetricConfig{\n\t\t\tFrequency: int64(mc.Timestep),\n\t\t\tAggregation: agg,\n\t\t})\n\t}\n\tfor _, c := range archive.Clusters {\n\t\tfor _, mc := range c.MetricConfig {\n\t\t\taddMetricConfig(mc)\n\t\t}\n\n\t\tfor _, sc := range c.SubClusters {\n\t\t\tfor _, mc := range sc.MetricConfig {\n\t\t\t\taddMetricConfig(mc)\n\t\t\t}\n\t\t}\n\t}\n\n\treturn metrics\n}\n","structuredPatch":[{"oldStart":14,"oldLines":12,"newStart":14,"newLines":10,"lines":[" //\t├─ RetentionInMemory: How long to keep data in RAM"," //\t├─ MemoryCap: Memory limit in bytes (triggers forceFree)"," //\t├─ Checkpoints: Persistence configuration","-//\t│ ├─ FileFormat: \"json\" or \"wal\"","-//\t│ ├─ Interval: How often to save (e.g., \"1h\")","+//\t│ ├─ FileFormat: \"json\" or \"wal\" (default: \"wal\")"," //\t│ └─ RootDir: Checkpoint storage path","-//\t├─ Cleanup: Long-term storage configuration","-//\t│ ├─ Interval: How often to delete/archive","-//\t│ ├─ RootDir: Archive storage path","+//\t├─ Cleanup: Long-term storage configuration (interval = RetentionInMemory)","+//\t│ ├─ RootDir: Archive storage path (archive mode only)"," //\t│ └─ Mode: \"delete\" or \"archive\""," //\t├─ Debug: Development/debugging options"," //\t└─ Subscriptions: NATS topic subscriptions for metric ingestion"]}],"userModified":false,"replaceAll":false},"sourceToolAssistantUUID":"e347abb6-c5c7-4051-a3a6-4fffb1521782"} +{"parentUuid":"4ee34a9e-1f56-47f0-9a6f-d692af8e7036","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","message":{"model":"claude-sonnet-4-6","id":"msg_01QMqk72r2aLbU6CG5oJSQUe","type":"message","role":"assistant","content":[{"type":"text","text":"Now also update RetentionInMemory comment in the 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/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/config.go has been updated successfully."}]},"uuid":"6fb6becc-ba88-46e0-b003-78def3801ec5","timestamp":"2026-03-04T09:26:34.669Z","toolUseResult":{"filePath":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/config.go","oldString":"//\t├─ RetentionInMemory: How long to keep data in RAM","newString":"//\t├─ RetentionInMemory: How long to keep data in RAM (also used as cleanup interval)","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\n// Package metricstore provides config.go: Configuration structures and metric management.\n//\n// # Configuration Hierarchy\n//\n// The metricstore package uses nested configuration structures:\n//\n//\tMetricStoreConfig (Keys)\n//\t├─ NumWorkers: Parallel checkpoint/archive workers\n//\t├─ RetentionInMemory: How long to keep data in RAM\n//\t├─ MemoryCap: Memory limit in bytes (triggers forceFree)\n//\t├─ Checkpoints: Persistence configuration\n//\t│ ├─ FileFormat: \"json\" or \"wal\" (default: \"wal\")\n//\t│ └─ RootDir: Checkpoint storage path\n//\t├─ Cleanup: Long-term storage configuration (interval = RetentionInMemory)\n//\t│ ├─ RootDir: Archive storage path (archive mode only)\n//\t│ └─ Mode: \"delete\" or \"archive\"\n//\t├─ Debug: Development/debugging options\n//\t└─ Subscriptions: NATS topic subscriptions for metric ingestion\n//\n// # Metric Configuration\n//\n// Each metric (e.g., \"cpu_load\", \"mem_used\") has a MetricConfig entry in the global\n// Metrics map, defining:\n//\n// - Frequency: Measurement interval in seconds\n// - Aggregation: How to combine values (sum/avg/none) when transforming scopes\n// - offset: Internal index into Level.metrics slice (assigned during Init)\n//\n// # AggregationStrategy\n//\n// Determines how to combine metric values when aggregating from finer to coarser scopes:\n//\n// - NoAggregation: Do not combine (incompatible scopes)\n// - SumAggregation: Add values (e.g., power consumption: core→socket)\n// - AvgAggregation: Average values (e.g., temperature: core→socket)\npackage metricstore\n\nimport (\n\t\"fmt\"\n\t\"time\"\n\n\t\"github.com/ClusterCockpit/cc-backend/pkg/archive\"\n\tcclog \"github.com/ClusterCockpit/cc-lib/v2/ccLogger\"\n\t\"github.com/ClusterCockpit/cc-lib/v2/schema\"\n)\n\nconst (\n\tDefaultMaxWorkers = 10\n\tDefaultBufferCapacity = 512\n\tDefaultGCTriggerInterval = 100\n\tDefaultMemoryUsageTrackerInterval = 1 * time.Hour\n)\n\n// Checkpoints configures periodic persistence of in-memory metric data.\n//\n// Fields:\n// - FileFormat: \"json\" (human-readable, periodic) or \"wal\" (binary snapshot + WAL, crash-safe); default is \"wal\"\n// - RootDir: Filesystem path for checkpoint files (created if missing)\ntype Checkpoints struct {\n\tFileFormat string `json:\"file-format\"`\n\tRootDir string `json:\"directory\"`\n}\n\n// Debug provides development and profiling options.\n//\n// Fields:\n// - DumpToFile: Path to dump checkpoint data for inspection (empty = disabled)\n// - EnableGops: Enable gops agent for live runtime debugging (https://github.com/google/gops)\ntype Debug struct {\n\tDumpToFile string `json:\"dump-to-file\"`\n\tEnableGops bool `json:\"gops\"`\n}\n\n// Cleanup configures long-term storage of old metric data.\n//\n// Data older than RetentionInMemory is archived to disk or deleted.\n// The cleanup interval is always RetentionInMemory.\n//\n// Fields:\n// - RootDir: Filesystem path for archived data (used in \"archive\" mode)\n// - Mode: \"delete\" (discard old data) or \"archive\" (write to RootDir)\ntype Cleanup struct {\n\tRootDir string `json:\"directory\"`\n\tMode string `json:\"mode\"`\n}\n\n// Subscriptions defines NATS topics to subscribe to for metric ingestion.\n//\n// Each subscription receives metrics via NATS messaging, enabling real-time\n// data collection from compute nodes.\n//\n// Fields:\n// - SubscribeTo: NATS subject/channel name (e.g., \"metrics.compute.*\")\n// - ClusterTag: Default cluster name for metrics without cluster tag (optional)\ntype Subscriptions []struct {\n\t// Channel name\n\tSubscribeTo string `json:\"subscribe-to\"`\n\n\t// Allow lines without a cluster tag, use this as default, optional\n\tClusterTag string `json:\"cluster-tag\"`\n}\n\n// MetricStoreConfig defines the main configuration for the metricstore.\n//\n// Loaded from cc-backend's config.json \"metricstore\" section. Controls memory usage,\n// persistence, archiving, and metric ingestion.\n//\n// Fields:\n// - NumWorkers: Parallel workers for checkpoint/archive (0 = auto: min(NumCPU/2+1, 10))\n// - RetentionInMemory: Duration string (e.g., \"48h\") for in-memory data retention\n// - MemoryCap: Max bytes for buffer data (0 = unlimited); triggers forceFree when exceeded\n// - Checkpoints: Periodic persistence configuration\n// - Debug: Development/profiling options (nil = disabled)\n// - Archive: Long-term storage configuration (nil = disabled)\n// - Subscriptions: NATS topics for metric ingestion (nil = polling only)\ntype MetricStoreConfig struct {\n\t// Number of concurrent workers for checkpoint and archive operations.\n\t// If not set or 0, defaults to min(runtime.NumCPU()/2+1, 10)\n\tNumWorkers int `json:\"num-workers\"`\n\tRetentionInMemory string `json:\"retention-in-memory\"`\n\tMemoryCap int `json:\"memory-cap\"`\n\tCheckpoints Checkpoints `json:\"checkpoints\"`\n\tDebug *Debug `json:\"debug\"`\n\tCleanup *Cleanup `json:\"cleanup\"`\n\tSubscriptions *Subscriptions `json:\"nats-subscriptions\"`\n}\n\n// Keys is the global metricstore configuration instance.\n//\n// Initialized with defaults, then overwritten by cc-backend's config.json.\n// Accessed by Init(), Checkpointing(), and other lifecycle functions.\nvar Keys MetricStoreConfig = MetricStoreConfig{\n\tCheckpoints: Checkpoints{\n\t\tFileFormat: \"wal\",\n\t\tRootDir: \"./var/checkpoints\",\n\t},\n\tCleanup: &Cleanup{\n\t\tMode: \"delete\",\n\t},\n}\n\n// AggregationStrategy defines how to combine metric values across hierarchy levels.\n//\n// Used when transforming data from finer-grained scopes (e.g., core) to coarser scopes\n// (e.g., socket). This is SPATIAL aggregation, not TEMPORAL (time-based) aggregation.\n//\n// Values:\n// - NoAggregation: Do not aggregate (incompatible scopes or non-aggregatable metrics)\n// - SumAggregation: Add values (e.g., power: sum core power → socket power)\n// - AvgAggregation: Average values (e.g., temperature: average core temps → socket temp)\ntype AggregationStrategy int\n\nconst (\n\tNoAggregation AggregationStrategy = iota // Do not aggregate\n\tSumAggregation // Sum values (e.g., power, energy)\n\tAvgAggregation // Average values (e.g., temperature, utilization)\n)\n\n// AssignAggregationStrategy parses a string into an AggregationStrategy value.\n//\n// Used when loading metric configurations from JSON/YAML files.\n//\n// Parameters:\n// - str: \"sum\", \"avg\", or \"\" (empty string for NoAggregation)\n//\n// Returns:\n// - AggregationStrategy: Parsed value\n// - error: Non-nil if str is unrecognized\nfunc AssignAggregationStrategy(str string) (AggregationStrategy, error) {\n\tswitch str {\n\tcase \"\":\n\t\treturn NoAggregation, nil\n\tcase \"sum\":\n\t\treturn SumAggregation, nil\n\tcase \"avg\":\n\t\treturn AvgAggregation, nil\n\tdefault:\n\t\treturn NoAggregation, fmt.Errorf(\"[METRICSTORE]> unknown aggregation strategy: %s\", str)\n\t}\n}\n\n// MetricConfig defines configuration for a single metric type.\n//\n// Stored in the global Metrics map, keyed by metric name (e.g., \"cpu_load\").\n//\n// Fields:\n// - Frequency: Measurement interval in seconds (e.g., 60 for 1-minute granularity)\n// - Aggregation: How to combine values across hierarchy levels (sum/avg/none)\n// - offset: Internal index into Level.metrics slice (assigned during Init)\ntype MetricConfig struct {\n\t// Interval in seconds at which measurements are stored\n\tFrequency int64\n\n\t// Can be 'sum', 'avg' or null. Describes how to aggregate metrics from the same timestep over the hierarchy.\n\tAggregation AggregationStrategy\n\n\t// Private, used internally...\n\toffset int\n}\n\nfunc BuildMetricList() map[string]MetricConfig {\n\tvar metrics map[string]MetricConfig = make(map[string]MetricConfig)\n\n\taddMetric := func(name string, metric MetricConfig) error {\n\t\tif metrics == nil {\n\t\t\tmetrics = make(map[string]MetricConfig, 0)\n\t\t}\n\n\t\tif existingMetric, ok := metrics[name]; ok {\n\t\t\tif existingMetric.Frequency != metric.Frequency {\n\t\t\t\tif existingMetric.Frequency < metric.Frequency {\n\t\t\t\t\texistingMetric.Frequency = metric.Frequency\n\t\t\t\t\tmetrics[name] = existingMetric\n\t\t\t\t}\n\t\t\t}\n\t\t} else {\n\t\t\tmetrics[name] = metric\n\t\t}\n\n\t\treturn nil\n\t}\n\n\t// Helper function to add metric configuration\n\taddMetricConfig := func(mc *schema.MetricConfig) {\n\t\tagg, err := AssignAggregationStrategy(mc.Aggregation)\n\t\tif err != nil {\n\t\t\tcclog.Warnf(\"Could not find aggregation strategy for metric config '%s': %s\", mc.Name, err.Error())\n\t\t}\n\n\t\taddMetric(mc.Name, MetricConfig{\n\t\t\tFrequency: int64(mc.Timestep),\n\t\t\tAggregation: agg,\n\t\t})\n\t}\n\tfor _, c := range archive.Clusters {\n\t\tfor _, mc := range c.MetricConfig {\n\t\t\taddMetricConfig(mc)\n\t\t}\n\n\t\tfor _, sc := range c.SubClusters {\n\t\t\tfor _, mc := range sc.MetricConfig {\n\t\t\t\taddMetricConfig(mc)\n\t\t\t}\n\t\t}\n\t}\n\n\treturn metrics\n}\n","structuredPatch":[{"oldStart":11,"oldLines":7,"newStart":11,"newLines":7,"lines":[" //"," //\tMetricStoreConfig (Keys)"," //\t├─ NumWorkers: Parallel checkpoint/archive workers","-//\t├─ RetentionInMemory: How long to keep data in RAM","+//\t├─ RetentionInMemory: How long to keep data in RAM (also used as cleanup interval)"," //\t├─ MemoryCap: Memory limit in bytes (triggers forceFree)"," //\t├─ Checkpoints: Persistence configuration"," //\t│ ├─ FileFormat: \"json\" or \"wal\" (default: \"wal\")"]}],"userModified":false,"replaceAll":false},"sourceToolAssistantUUID":"da3c9f03-4201-4329-a217-3aec3e750084"} +{"parentUuid":"6fb6becc-ba88-46e0-b003-78def3801ec5","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","message":{"model":"claude-sonnet-4-6","id":"msg_01FFNv9MNRR7Ry1s8zmfDnFB","type":"message","role":"assistant","content":[{"type":"text","text":"Now update `checkpoint.go` to use a hardcoded 12h interval:"}],"stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":238,"cache_read_input_tokens":49371,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":238},"output_tokens":1,"service_tier":"standard","inference_geo":"not_available"}},"requestId":"req_011CYhoQpQ2ZVrfzgwsysRR8","type":"assistant","uuid":"fb4a8fe3-f97f-44a4-a35b-9a20e76f496e","timestamp":"2026-03-04T09:26:40.466Z"} +{"parentUuid":"fb4a8fe3-f97f-44a4-a35b-9a20e76f496e","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","message":{"model":"claude-sonnet-4-6","id":"msg_01FFNv9MNRR7Ry1s8zmfDnFB","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01TSvF47sKgnqavAP47AQ23z","name":"Edit","input":{"replace_all":false,"file_path":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/checkpoint.go","old_string":"// Checkpointing starts a background worker that periodically saves metric data to disk.\n//\n// Format behaviour:\n// - \"json\": Periodic checkpointing based on Keys.Checkpoints.Interval\n// - \"wal\": Periodic binary snapshots + WAL rotation at Keys.Checkpoints.Interval\nfunc Checkpointing(wg *sync.WaitGroup, ctx context.Context) {\n\tlastCheckpointMu.Lock()\n\tlastCheckpoint = time.Now()\n\tlastCheckpointMu.Unlock()\n\n\tms := GetMemoryStore()\n\n\twg.Go(func() {\n\n\t\td, err := time.ParseDuration(Keys.Checkpoints.Interval)\n\t\tif err != nil {\n\t\t\tcclog.Fatalf(\"[METRICSTORE]> invalid checkpoint interval '%s': %s\", Keys.Checkpoints.Interval, err.Error())\n\t\t}\n\t\tif d <= 0 {\n\t\t\tcclog.Warnf(\"[METRICSTORE]> checkpoint interval is zero or negative (%s), checkpointing disabled\", d)\n\t\t\treturn\n\t\t}\n\n\t\tticker := time.NewTicker(d)","new_string":"// Checkpointing starts a background worker that periodically saves metric data to disk.\n//\n// Checkpoints are written every 12 hours (hardcoded).\n//\n// Format behaviour:\n// - \"json\": Periodic checkpointing every checkpointInterval\n// - \"wal\": Periodic binary snapshots + WAL rotation every checkpointInterval\nfunc Checkpointing(wg *sync.WaitGroup, ctx context.Context) {\n\tlastCheckpointMu.Lock()\n\tlastCheckpoint = time.Now()\n\tlastCheckpointMu.Unlock()\n\n\tms := GetMemoryStore()\n\n\twg.Go(func() {\n\n\t\tconst checkpointInterval = 12 * time.Hour\n\t\td := checkpointInterval\n\n\t\tticker := time.NewTicker(d)"},"caller":{"type":"direct"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":238,"cache_read_input_tokens":49371,"output_tokens":620,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":238,"ephemeral_5m_input_tokens":0},"inference_geo":"","iterations":[],"speed":"standard"}},"requestId":"req_011CYhoQpQ2ZVrfzgwsysRR8","type":"assistant","uuid":"37197759-eeb8-4b1d-bbce-c12eac3915a7","timestamp":"2026-03-04T09:26:47.097Z"} +{"type":"file-history-snapshot","messageId":"37197759-eeb8-4b1d-bbce-c12eac3915a7","snapshot":{"messageId":"f9f69cd7-691d-46b4-9e30-43ffeabb85a6","trackedFileBackups":{"pkg/metricstore/config.go":{"backupFileName":"614b3f053f832cad@v1","version":1,"backupTime":"2026-03-04T09:26:09.235Z"},"pkg/metricstore/checkpoint.go":{"backupFileName":"6cd2cc2f9fa35484@v1","version":1,"backupTime":"2026-03-04T09:26:47.115Z"}},"timestamp":"2026-03-04T09:25:30.352Z"},"isSnapshotUpdate":true} +{"parentUuid":"37197759-eeb8-4b1d-bbce-c12eac3915a7","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","type":"progress","data":{"type":"hook_progress","hookEvent":"PostToolUse","hookName":"PostToolUse:Edit","command":"callback"},"parentToolUseID":"toolu_01TSvF47sKgnqavAP47AQ23z","toolUseID":"toolu_01TSvF47sKgnqavAP47AQ23z","timestamp":"2026-03-04T09:26:47.118Z","uuid":"78ed8d64-d428-4d09-abec-f9d472376728"} +{"parentUuid":"37197759-eeb8-4b1d-bbce-c12eac3915a7","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01TSvF47sKgnqavAP47AQ23z","type":"tool_result","content":"The file /Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/checkpoint.go has been updated successfully."}]},"uuid":"cae919d5-6e30-4d4a-8505-8c60034f556c","timestamp":"2026-03-04T09:26:47.117Z","toolUseResult":{"filePath":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/checkpoint.go","oldString":"// Checkpointing starts a background worker that periodically saves metric data to disk.\n//\n// Format behaviour:\n// - \"json\": Periodic checkpointing based on Keys.Checkpoints.Interval\n// - \"wal\": Periodic binary snapshots + WAL rotation at Keys.Checkpoints.Interval\nfunc Checkpointing(wg *sync.WaitGroup, ctx context.Context) {\n\tlastCheckpointMu.Lock()\n\tlastCheckpoint = time.Now()\n\tlastCheckpointMu.Unlock()\n\n\tms := GetMemoryStore()\n\n\twg.Go(func() {\n\n\t\td, err := time.ParseDuration(Keys.Checkpoints.Interval)\n\t\tif err != nil {\n\t\t\tcclog.Fatalf(\"[METRICSTORE]> invalid checkpoint interval '%s': %s\", Keys.Checkpoints.Interval, err.Error())\n\t\t}\n\t\tif d <= 0 {\n\t\t\tcclog.Warnf(\"[METRICSTORE]> checkpoint interval is zero or negative (%s), checkpointing disabled\", d)\n\t\t\treturn\n\t\t}\n\n\t\tticker := time.NewTicker(d)","newString":"// Checkpointing starts a background worker that periodically saves metric data to disk.\n//\n// Checkpoints are written every 12 hours (hardcoded).\n//\n// Format behaviour:\n// - \"json\": Periodic checkpointing every checkpointInterval\n// - \"wal\": Periodic binary snapshots + WAL rotation every checkpointInterval\nfunc Checkpointing(wg *sync.WaitGroup, ctx context.Context) {\n\tlastCheckpointMu.Lock()\n\tlastCheckpoint = time.Now()\n\tlastCheckpointMu.Unlock()\n\n\tms := GetMemoryStore()\n\n\twg.Go(func() {\n\n\t\tconst checkpointInterval = 12 * time.Hour\n\t\td := checkpointInterval\n\n\t\tticker := time.NewTicker(d)","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\n// This file implements checkpoint persistence for the in-memory metric store.\n//\n// Checkpoints enable graceful restarts by periodically saving in-memory metric\n// data to disk in JSON or binary format. The checkpoint system:\n//\n// Key Features:\n// - Periodic background checkpointing via the Checkpointing() worker\n// - Two format families: JSON (human-readable) and WAL+binary (compact, crash-safe)\n// - Parallel checkpoint creation and loading using worker pools\n// - Hierarchical file organization: checkpoint_dir/cluster/host/timestamp.{json|bin}\n// - WAL file: checkpoint_dir/cluster/host/current.wal (append-only, per-entry)\n// - Only saves unarchived data (archived data is already persisted elsewhere)\n// - GC optimization during loading to prevent excessive heap growth\n//\n// Checkpoint Workflow:\n// 1. Init() loads checkpoints within retention window at startup\n// 2. Checkpointing() worker periodically saves new data\n// 3. Shutdown() writes final checkpoint before exit\n//\n// File Organization:\n//\n//\tcheckpoints/\n//\t cluster1/\n//\t host001/\n//\t 1234567890.json (JSON format: full subtree snapshot)\n//\t 1234567890.bin (binary format: full subtree snapshot)\n//\t current.wal (WAL format: append-only per-entry log)\n//\t host002/\n//\t ...\npackage metricstore\n\nimport (\n\t\"bufio\"\n\t\"context\"\n\t\"encoding/json\"\n\t\"errors\"\n\t\"fmt\"\n\t\"io/fs\"\n\t\"os\"\n\t\"path\"\n\t\"path/filepath\"\n\t\"sort\"\n\t\"strconv\"\n\t\"strings\"\n\t\"sync\"\n\t\"sync/atomic\"\n\t\"time\"\n\n\tcclog \"github.com/ClusterCockpit/cc-lib/v2/ccLogger\"\n\t\"github.com/ClusterCockpit/cc-lib/v2/schema\"\n)\n\nconst (\n\tCheckpointFilePerms = 0o644 // File permissions for checkpoint files\n\tCheckpointDirPerms = 0o755 // Directory permissions for checkpoint directories\n\tGCTriggerInterval = DefaultGCTriggerInterval // Interval for triggering GC during checkpoint loading\n)\n\n// CheckpointMetrics represents metric data in a checkpoint file.\n// Whenever the structure changes, update MarshalJSON as well!\ntype CheckpointMetrics struct {\n\tData []schema.Float `json:\"data\"`\n\tFrequency int64 `json:\"frequency\"`\n\tStart int64 `json:\"start\"`\n}\n\n// CheckpointFile represents the hierarchical structure of a checkpoint file.\n// It mirrors the Level tree structure from the MemoryStore.\ntype CheckpointFile struct {\n\tMetrics map[string]*CheckpointMetrics `json:\"metrics\"`\n\tChildren map[string]*CheckpointFile `json:\"children\"`\n\tFrom int64 `json:\"from\"`\n\tTo int64 `json:\"to\"`\n}\n\n// lastCheckpoint tracks the timestamp of the last checkpoint creation.\nvar (\n\tlastCheckpoint time.Time\n\tlastCheckpointMu sync.Mutex\n)\n\n// Checkpointing starts a background worker that periodically saves metric data to disk.\n//\n// Format behaviour:\n// - \"json\": Periodic checkpointing based on Keys.Checkpoints.Interval\n// - \"wal\": Periodic binary snapshots + WAL rotation at Keys.Checkpoints.Interval\nfunc Checkpointing(wg *sync.WaitGroup, ctx context.Context) {\n\tlastCheckpointMu.Lock()\n\tlastCheckpoint = time.Now()\n\tlastCheckpointMu.Unlock()\n\n\tms := GetMemoryStore()\n\n\twg.Go(func() {\n\n\t\td, err := time.ParseDuration(Keys.Checkpoints.Interval)\n\t\tif err != nil {\n\t\t\tcclog.Fatalf(\"[METRICSTORE]> invalid checkpoint interval '%s': %s\", Keys.Checkpoints.Interval, err.Error())\n\t\t}\n\t\tif d <= 0 {\n\t\t\tcclog.Warnf(\"[METRICSTORE]> checkpoint interval is zero or negative (%s), checkpointing disabled\", d)\n\t\t\treturn\n\t\t}\n\n\t\tticker := time.NewTicker(d)\n\t\tdefer ticker.Stop()\n\n\t\tfor {\n\t\t\tselect {\n\t\t\tcase <-ctx.Done():\n\t\t\t\treturn\n\t\t\tcase <-ticker.C:\n\t\t\t\tlastCheckpointMu.Lock()\n\t\t\t\tfrom := lastCheckpoint\n\t\t\t\tlastCheckpointMu.Unlock()\n\n\t\t\t\tnow := time.Now()\n\t\t\t\tcclog.Infof(\"[METRICSTORE]> start checkpointing (starting at %s)...\", from.Format(time.RFC3339))\n\n\t\t\t\tif Keys.Checkpoints.FileFormat == \"wal\" {\n\t\t\t\t\tn, hostDirs, err := ms.ToCheckpointWAL(Keys.Checkpoints.RootDir, from.Unix(), now.Unix())\n\t\t\t\t\tif err != nil {\n\t\t\t\t\t\tcclog.Errorf(\"[METRICSTORE]> binary checkpointing failed: %s\", err.Error())\n\t\t\t\t\t} else {\n\t\t\t\t\t\tcclog.Infof(\"[METRICSTORE]> done: %d binary snapshot files created\", n)\n\t\t\t\t\t\tlastCheckpointMu.Lock()\n\t\t\t\t\t\tlastCheckpoint = now\n\t\t\t\t\t\tlastCheckpointMu.Unlock()\n\t\t\t\t\t\t// Rotate WAL files for successfully checkpointed hosts.\n\t\t\t\t\t\tRotateWALFiles(hostDirs)\n\t\t\t\t\t}\n\t\t\t\t} else {\n\t\t\t\t\tn, err := ms.ToCheckpoint(Keys.Checkpoints.RootDir, from.Unix(), now.Unix())\n\t\t\t\t\tif err != nil {\n\t\t\t\t\t\tcclog.Errorf(\"[METRICSTORE]> checkpointing failed: %s\", err.Error())\n\t\t\t\t\t} else {\n\t\t\t\t\t\tcclog.Infof(\"[METRICSTORE]> done: %d checkpoint files created\", n)\n\t\t\t\t\t\tlastCheckpointMu.Lock()\n\t\t\t\t\t\tlastCheckpoint = now\n\t\t\t\t\t\tlastCheckpointMu.Unlock()\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t})\n}\n\n// MarshalJSON provides optimized JSON encoding for CheckpointMetrics.\n//\n// Since schema.Float has custom MarshalJSON, serializing []Float has significant overhead.\n// This method manually constructs JSON to avoid allocations and interface conversions.\nfunc (cm *CheckpointMetrics) MarshalJSON() ([]byte, error) {\n\tbuf := make([]byte, 0, 128+len(cm.Data)*8)\n\tbuf = append(buf, `{\"frequency\":`...)\n\tbuf = strconv.AppendInt(buf, cm.Frequency, 10)\n\tbuf = append(buf, `,\"start\":`...)\n\tbuf = strconv.AppendInt(buf, cm.Start, 10)\n\tbuf = append(buf, `,\"data\":[`...)\n\tfor i, x := range cm.Data {\n\t\tif i != 0 {\n\t\t\tbuf = append(buf, ',')\n\t\t}\n\t\tif x.IsNaN() {\n\t\t\tbuf = append(buf, `null`...)\n\t\t} else {\n\t\t\tbuf = strconv.AppendFloat(buf, float64(x), 'f', 1, 32)\n\t\t}\n\t}\n\tbuf = append(buf, `]}`...)\n\treturn buf, nil\n}\n\n// ToCheckpoint writes metric data to checkpoint files in parallel (JSON format).\n//\n// Metrics at root and cluster levels are skipped. One file per host is created.\n// Uses worker pool (Keys.NumWorkers) for parallel processing. Only locks one host\n// at a time, allowing concurrent writes/reads to other hosts.\n//\n// Returns the number of checkpoint files created and any errors encountered.\nfunc (m *MemoryStore) ToCheckpoint(dir string, from, to int64) (int, error) {\n\t// Pre-calculate capacity by counting cluster/host pairs\n\tm.root.lock.RLock()\n\ttotalHosts := 0\n\tfor _, l1 := range m.root.children {\n\t\tl1.lock.RLock()\n\t\ttotalHosts += len(l1.children)\n\t\tl1.lock.RUnlock()\n\t}\n\tm.root.lock.RUnlock()\n\n\tlevels := make([]*Level, 0, totalHosts)\n\tselectors := make([][]string, 0, totalHosts)\n\n\tm.root.lock.RLock()\n\tfor sel1, l1 := range m.root.children {\n\t\tl1.lock.RLock()\n\t\tfor sel2, l2 := range l1.children {\n\t\t\tlevels = append(levels, l2)\n\t\t\tselectors = append(selectors, []string{sel1, sel2})\n\t\t}\n\t\tl1.lock.RUnlock()\n\t}\n\tm.root.lock.RUnlock()\n\n\ttype workItem struct {\n\t\tlevel *Level\n\t\tdir string\n\t\tselector []string\n\t}\n\n\tn, errs := int32(0), int32(0)\n\n\tvar wg sync.WaitGroup\n\twg.Add(Keys.NumWorkers)\n\twork := make(chan workItem, Keys.NumWorkers*2)\n\tfor worker := 0; worker < Keys.NumWorkers; worker++ {\n\t\tgo func() {\n\t\t\tdefer wg.Done()\n\n\t\t\tfor workItem := range work {\n\t\t\t\tif err := workItem.level.toCheckpoint(workItem.dir, from, to, m); err != nil {\n\t\t\t\t\tif err == ErrNoNewArchiveData {\n\t\t\t\t\t\tcontinue\n\t\t\t\t\t}\n\n\t\t\t\t\tcclog.Errorf(\"[METRICSTORE]> error while checkpointing %#v: %s\", workItem.selector, err.Error())\n\t\t\t\t\tatomic.AddInt32(&errs, 1)\n\t\t\t\t} else {\n\t\t\t\t\tatomic.AddInt32(&n, 1)\n\t\t\t\t}\n\t\t\t}\n\t\t}()\n\t}\n\n\tfor i := 0; i < len(levels); i++ {\n\t\tdir := path.Join(dir, path.Join(selectors[i]...))\n\t\twork <- workItem{\n\t\t\tlevel: levels[i],\n\t\t\tdir: dir,\n\t\t\tselector: selectors[i],\n\t\t}\n\t}\n\n\tclose(work)\n\twg.Wait()\n\n\tif errs > 0 {\n\t\treturn int(n), fmt.Errorf(\"[METRICSTORE]> %d errors happened while creating checkpoints (%d successes)\", errs, n)\n\t}\n\treturn int(n), nil\n}\n\n// toCheckpointFile recursively converts a Level tree to CheckpointFile structure.\n// Skips metrics that are already archived. Returns nil if no unarchived data exists.\nfunc (l *Level) toCheckpointFile(from, to int64, m *MemoryStore) (*CheckpointFile, error) {\n\tl.lock.RLock()\n\tdefer l.lock.RUnlock()\n\n\tretval := &CheckpointFile{\n\t\tFrom: from,\n\t\tTo: to,\n\t\tMetrics: make(map[string]*CheckpointMetrics),\n\t\tChildren: make(map[string]*CheckpointFile),\n\t}\n\n\tfor metric, minfo := range m.Metrics {\n\t\tb := l.metrics[minfo.offset]\n\t\tif b == nil {\n\t\t\tcontinue\n\t\t}\n\n\t\tallArchived := true\n\t\tb.iterFromTo(from, to, func(b *buffer) error {\n\t\t\tif !b.archived {\n\t\t\t\tallArchived = false\n\t\t\t\treturn fmt.Errorf(\"stop\") // Early termination signal\n\t\t\t}\n\t\t\treturn nil\n\t\t})\n\n\t\tif allArchived {\n\t\t\tcontinue\n\t\t}\n\n\t\tdata := make([]schema.Float, (to-from)/b.frequency+1)\n\t\tdata, start, end, err := b.read(from, to, data)\n\t\tif err != nil {\n\t\t\treturn nil, err\n\t\t}\n\n\t\tfor i := int((end - start) / b.frequency); i < len(data); i++ {\n\t\t\tdata[i] = schema.NaN\n\t\t}\n\n\t\tretval.Metrics[metric] = &CheckpointMetrics{\n\t\t\tFrequency: b.frequency,\n\t\t\tStart: start,\n\t\t\tData: data,\n\t\t}\n\t}\n\n\tfor name, child := range l.children {\n\t\tval, err := child.toCheckpointFile(from, to, m)\n\t\tif err != nil {\n\t\t\treturn nil, err\n\t\t}\n\n\t\tif val != nil {\n\t\t\tretval.Children[name] = val\n\t\t}\n\t}\n\n\tif len(retval.Children) == 0 && len(retval.Metrics) == 0 {\n\t\treturn nil, nil\n\t}\n\n\treturn retval, nil\n}\n\n// toCheckpoint writes a Level's data to a JSON checkpoint file.\n// Creates directory if needed. Returns ErrNoNewArchiveData if nothing to save.\nfunc (l *Level) toCheckpoint(dir string, from, to int64, m *MemoryStore) error {\n\tcf, err := l.toCheckpointFile(from, to, m)\n\tif err != nil {\n\t\treturn err\n\t}\n\n\tif cf == nil {\n\t\treturn ErrNoNewArchiveData\n\t}\n\n\tfilepath := path.Join(dir, fmt.Sprintf(\"%d.json\", from))\n\tf, err := os.OpenFile(filepath, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, CheckpointFilePerms)\n\tif err != nil && os.IsNotExist(err) {\n\t\terr = os.MkdirAll(dir, CheckpointDirPerms)\n\t\tif err == nil {\n\t\t\tf, err = os.OpenFile(filepath, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, CheckpointFilePerms)\n\t\t}\n\t}\n\tif err != nil {\n\t\treturn err\n\t}\n\tdefer f.Close()\n\n\tbw := bufio.NewWriter(f)\n\tif err = json.NewEncoder(bw).Encode(cf); err != nil {\n\t\treturn err\n\t}\n\n\treturn bw.Flush()\n}\n\n// enqueueCheckpointHosts traverses checkpoint directory and enqueues cluster/host pairs.\n// Returns error if directory structure is invalid.\nfunc enqueueCheckpointHosts(dir string, work chan<- [2]string) error {\n\tclustersDir, err := os.ReadDir(dir)\n\tif err != nil {\n\t\treturn err\n\t}\n\n\tfor _, clusterDir := range clustersDir {\n\t\tif !clusterDir.IsDir() {\n\t\t\treturn errors.New(\"[METRICSTORE]> expected only directories at first level of checkpoints/ directory\")\n\t\t}\n\n\t\thostsDir, err := os.ReadDir(filepath.Join(dir, clusterDir.Name()))\n\t\tif err != nil {\n\t\t\treturn err\n\t\t}\n\n\t\tfor _, hostDir := range hostsDir {\n\t\t\tif !hostDir.IsDir() {\n\t\t\t\treturn errors.New(\"[METRICSTORE]> expected only directories at second level of checkpoints/ directory\")\n\t\t\t}\n\n\t\t\twork <- [2]string{clusterDir.Name(), hostDir.Name()}\n\t\t}\n\t}\n\n\treturn nil\n}\n\n// FromCheckpoint loads checkpoint files from disk into memory in parallel.\n//\n// Uses worker pool to load cluster/host combinations. Returns number of files\n// loaded and any errors.\nfunc (m *MemoryStore) FromCheckpoint(dir string, from int64) (int, error) {\n\tvar wg sync.WaitGroup\n\twork := make(chan [2]string, Keys.NumWorkers*4)\n\tn, errs := int32(0), int32(0)\n\n\twg.Add(Keys.NumWorkers)\n\tfor worker := 0; worker < Keys.NumWorkers; worker++ {\n\t\tgo func() {\n\t\t\tdefer wg.Done()\n\t\t\tfor host := range work {\n\t\t\t\tlvl := m.root.findLevelOrCreate(host[:], len(m.Metrics))\n\t\t\t\tnn, err := lvl.fromCheckpoint(m, filepath.Join(dir, host[0], host[1]), from)\n\t\t\t\tif err != nil {\n\t\t\t\t\tcclog.Errorf(\"[METRICSTORE]> error while loading checkpoints for %s/%s: %s\", host[0], host[1], err.Error())\n\t\t\t\t\tatomic.AddInt32(&errs, 1)\n\t\t\t\t}\n\t\t\t\tatomic.AddInt32(&n, int32(nn))\n\t\t\t}\n\t\t}()\n\t}\n\n\terr := enqueueCheckpointHosts(dir, work)\n\tclose(work)\n\twg.Wait()\n\n\tif err != nil {\n\t\treturn int(n), err\n\t}\n\n\tif errs > 0 {\n\t\treturn int(n), fmt.Errorf(\"[METRICSTORE]> %d errors happened while creating checkpoints (%d successes)\", errs, n)\n\t}\n\treturn int(n), nil\n}\n\n// FromCheckpointFiles is the main entry point for loading checkpoints at startup.\n//\n// Creates checkpoint directory if it doesn't exist. This function must be called\n// before any writes or reads, and can only be called once.\nfunc (m *MemoryStore) FromCheckpointFiles(dir string, from int64) (int, error) {\n\tif _, err := os.Stat(dir); os.IsNotExist(err) {\n\t\terr := os.MkdirAll(dir, CheckpointDirPerms)\n\t\tif err != nil {\n\t\t\tcclog.Fatalf(\"[METRICSTORE]> Error creating directory: %#v\\n\", err)\n\t\t}\n\t\tcclog.Debugf(\"[METRICSTORE]> %#v Directory created successfully\", dir)\n\t}\n\n\treturn m.FromCheckpoint(dir, from)\n}\n\nfunc (l *Level) loadJSONFile(m *MemoryStore, f *os.File, from int64) error {\n\tbr := bufio.NewReader(f)\n\tcf := &CheckpointFile{}\n\tif err := json.NewDecoder(br).Decode(cf); err != nil {\n\t\treturn err\n\t}\n\n\tif cf.To != 0 && cf.To < from {\n\t\treturn nil\n\t}\n\n\tif err := l.loadFile(cf, m); err != nil {\n\t\treturn err\n\t}\n\n\treturn nil\n}\n\nfunc (l *Level) loadFile(cf *CheckpointFile, m *MemoryStore) error {\n\tfor name, metric := range cf.Metrics {\n\t\tn := len(metric.Data)\n\t\tb := &buffer{\n\t\t\tfrequency: metric.Frequency,\n\t\t\tstart: metric.Start,\n\t\t\tdata: metric.Data[0:n:n],\n\t\t\tprev: nil,\n\t\t\tnext: nil,\n\t\t\tarchived: true,\n\t\t}\n\n\t\tminfo, ok := m.Metrics[name]\n\t\tif !ok {\n\t\t\tcontinue\n\t\t}\n\n\t\tprev := l.metrics[minfo.offset]\n\t\tif prev == nil {\n\t\t\tl.metrics[minfo.offset] = b\n\t\t} else {\n\t\t\tif prev.start > b.start {\n\t\t\t\treturn fmt.Errorf(\"[METRICSTORE]> buffer start time %d is before previous buffer start %d\", b.start, prev.start)\n\t\t\t}\n\n\t\t\tb.prev = prev\n\t\t\tprev.next = b\n\t\t}\n\t\tl.metrics[minfo.offset] = b\n\t}\n\n\tif len(cf.Children) > 0 && l.children == nil {\n\t\tl.children = make(map[string]*Level)\n\t}\n\n\tfor sel, childCf := range cf.Children {\n\t\tchild, ok := l.children[sel]\n\t\tif !ok {\n\t\t\tchild = &Level{\n\t\t\t\tmetrics: make([]*buffer, len(m.Metrics)),\n\t\t\t\tchildren: nil,\n\t\t\t}\n\t\t\tl.children[sel] = child\n\t\t}\n\n\t\tif err := child.loadFile(childCf, m); err != nil {\n\t\t\treturn err\n\t\t}\n\t}\n\n\treturn nil\n}\n\n// fromCheckpoint loads all checkpoint files (JSON, binary snapshot, WAL) for a\n// single host directory. Snapshot files are loaded first (sorted by timestamp),\n// then current.wal is replayed on top.\nfunc (l *Level) fromCheckpoint(m *MemoryStore, dir string, from int64) (int, error) {\n\tdirentries, err := os.ReadDir(dir)\n\tif err != nil {\n\t\tif os.IsNotExist(err) {\n\t\t\treturn 0, nil\n\t\t}\n\t\treturn 0, err\n\t}\n\n\tallFiles := make([]fs.DirEntry, 0)\n\tvar walEntry fs.DirEntry\n\tfilesLoaded := 0\n\n\tfor _, e := range direntries {\n\t\tif e.IsDir() {\n\t\t\t// Legacy: skip subdirectories (only used by old Avro format).\n\t\t\t// These are ignored; their data is not loaded.\n\t\t\tcclog.Debugf(\"[METRICSTORE]> skipping subdirectory %s in checkpoint dir %s\", e.Name(), dir)\n\t\t\tcontinue\n\t\t}\n\n\t\tname := e.Name()\n\t\tif strings.HasSuffix(name, \".json\") || strings.HasSuffix(name, \".bin\") {\n\t\t\tallFiles = append(allFiles, e)\n\t\t} else if name == \"current.wal\" {\n\t\t\twalEntry = e\n\t\t}\n\t\t// Silently ignore other files (e.g., .tmp, .bin.tmp from interrupted writes).\n\t}\n\n\tfiles, err := findFiles(allFiles, from, true)\n\tif err != nil {\n\t\treturn filesLoaded, err\n\t}\n\n\tloaders := map[string]func(*MemoryStore, *os.File, int64) error{\n\t\t\".json\": l.loadJSONFile,\n\t\t\".bin\": l.loadBinaryFile,\n\t}\n\n\tfor _, filename := range files {\n\t\text := filepath.Ext(filename)\n\t\tloader := loaders[ext]\n\t\tif loader == nil {\n\t\t\tcclog.Warnf(\"[METRICSTORE]> unknown extension for checkpoint file %s\", filename)\n\t\t\tcontinue\n\t\t}\n\n\t\terr := func() error {\n\t\t\tf, err := os.Open(path.Join(dir, filename))\n\t\t\tif err != nil {\n\t\t\t\treturn err\n\t\t\t}\n\t\t\tdefer f.Close()\n\t\t\treturn loader(m, f, from)\n\t\t}()\n\t\tif err != nil {\n\t\t\treturn filesLoaded, err\n\t\t}\n\t\tfilesLoaded++\n\t}\n\n\t// Replay WAL after all snapshot files so it fills in data since the last snapshot.\n\tif walEntry != nil {\n\t\terr := func() error {\n\t\t\tf, err := os.Open(path.Join(dir, walEntry.Name()))\n\t\t\tif err != nil {\n\t\t\t\treturn err\n\t\t\t}\n\t\t\tdefer f.Close()\n\t\t\treturn l.loadWALFile(m, f, from)\n\t\t}()\n\t\tif err != nil {\n\t\t\t// WAL errors are non-fatal: the snapshot already loaded the bulk of data.\n\t\t\tcclog.Warnf(\"[METRICSTORE]> WAL replay error for %s: %v (data since last snapshot may be missing)\", dir, err)\n\t\t} else {\n\t\t\tfilesLoaded++\n\t\t}\n\t}\n\n\treturn filesLoaded, nil\n}\n\n// parseTimestampFromFilename extracts a Unix timestamp from a checkpoint filename.\n// Supports \".json\" (format: \".json\") and \".bin\" (format: \".bin\").\nfunc parseTimestampFromFilename(name string) (int64, error) {\n\tswitch {\n\tcase strings.HasSuffix(name, \".json\"):\n\t\treturn strconv.ParseInt(name[:len(name)-5], 10, 64)\n\tcase strings.HasSuffix(name, \".bin\"):\n\t\treturn strconv.ParseInt(name[:len(name)-4], 10, 64)\n\tdefault:\n\t\treturn 0, fmt.Errorf(\"unknown checkpoint extension for file %q\", name)\n\t}\n}\n\n// findFiles returns filenames from direntries whose timestamps satisfy the filter.\n// If findMoreRecentFiles is true, returns files with timestamps >= t (plus the\n// last file before t if t falls between two files).\nfunc findFiles(direntries []fs.DirEntry, t int64, findMoreRecentFiles bool) ([]string, error) {\n\tnums := map[string]int64{}\n\tfor _, e := range direntries {\n\t\tname := e.Name()\n\t\tif !strings.HasSuffix(name, \".json\") && !strings.HasSuffix(name, \".bin\") {\n\t\t\tcontinue\n\t\t}\n\n\t\tts, err := parseTimestampFromFilename(name)\n\t\tif err != nil {\n\t\t\treturn nil, err\n\t\t}\n\t\tnums[name] = ts\n\t}\n\n\tsort.Slice(direntries, func(i, j int) bool {\n\t\ta, b := direntries[i], direntries[j]\n\t\treturn nums[a.Name()] < nums[b.Name()]\n\t})\n\n\tif len(nums) == 0 {\n\t\treturn nil, nil\n\t}\n\n\tfilenames := make([]string, 0)\n\n\tfor i, e := range direntries {\n\t\tts1 := nums[e.Name()]\n\n\t\tif findMoreRecentFiles && t <= ts1 {\n\t\t\tfilenames = append(filenames, e.Name())\n\t\t} else if !findMoreRecentFiles && ts1 <= t && ts1 != 0 {\n\t\t\tfilenames = append(filenames, e.Name())\n\t\t}\n\n\t\tif i == len(direntries)-1 {\n\t\t\tcontinue\n\t\t}\n\n\t\tenext := direntries[i+1]\n\t\tts2 := nums[enext.Name()]\n\n\t\tif findMoreRecentFiles {\n\t\t\tif ts1 < t && t < ts2 {\n\t\t\t\tfilenames = append(filenames, e.Name())\n\t\t\t}\n\t\t}\n\t}\n\n\treturn filenames, nil\n}\n","structuredPatch":[{"oldStart":86,"oldLines":9,"newStart":86,"newLines":11,"lines":[" "," // Checkpointing starts a background worker that periodically saves metric data to disk."," //","+// Checkpoints are written every 12 hours (hardcoded).","+//"," // Format behaviour:","-// - \"json\": Periodic checkpointing based on Keys.Checkpoints.Interval","-// - \"wal\": Periodic binary snapshots + WAL rotation at Keys.Checkpoints.Interval","+// - \"json\": Periodic checkpointing every checkpointInterval","+// - \"wal\": Periodic binary snapshots + WAL rotation every checkpointInterval"," func Checkpointing(wg *sync.WaitGroup, ctx context.Context) {"," lastCheckpointMu.Lock()"," lastCheckpoint = time.Now()"]},{"oldStart":98,"oldLines":14,"newStart":100,"newLines":8,"lines":[" "," wg.Go(func() {"," ","- d, err := time.ParseDuration(Keys.Checkpoints.Interval)","- if err != nil {","- cclog.Fatalf(\"[METRICSTORE]> invalid checkpoint interval '%s': %s\", Keys.Checkpoints.Interval, err.Error())","- }","- if d <= 0 {","- cclog.Warnf(\"[METRICSTORE]> checkpoint interval is zero or negative (%s), checkpointing disabled\", d)","- return","- }","+ const checkpointInterval = 12 * time.Hour","+ d := checkpointInterval"," "," ticker := time.NewTicker(d)"," defer ticker.Stop()"]}],"userModified":false,"replaceAll":false},"sourceToolAssistantUUID":"37197759-eeb8-4b1d-bbce-c12eac3915a7"} +{"parentUuid":"cae919d5-6e30-4d4a-8505-8c60034f556c","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","message":{"model":"claude-sonnet-4-6","id":"msg_01DevH3YJ8Wjae3m9qZQuiKj","type":"message","role":"assistant","content":[{"type":"text","text":"Now simplify `archive.go`:"}],"stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":665,"cache_read_input_tokens":49609,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":665},"output_tokens":2,"service_tier":"standard","inference_geo":"not_available"}},"requestId":"req_011CYhoRjfo1PnCdoWGDQNot","type":"assistant","uuid":"32f1f82a-b485-4486-b91b-cdeff9d1418a","timestamp":"2026-03-04T09:26:48.742Z"} 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ctx,\n\t\t\tKeys.Cleanup.Interval,\n\t\t\t\"deleting\",\n\t\t\t\"\",\n\t\t\ttrue,\n\t\t)\n\t}\n}","new_string":"func CleanUp(wg *sync.WaitGroup, ctx context.Context) {\n\tif Keys.Cleanup.Mode == \"archive\" {\n\t\t// Run as Archiver\n\t\tcleanUpWorker(wg, ctx,\n\t\t\tKeys.RetentionInMemory,\n\t\t\t\"archiving\",\n\t\t\tKeys.Cleanup.RootDir,\n\t\t\tfalse,\n\t\t)\n\t} else {\n\t\t// Run as Deleter\n\t\tcleanUpWorker(wg, ctx,\n\t\t\tKeys.RetentionInMemory,\n\t\t\t\"deleting\",\n\t\t\t\"\",\n\t\t\ttrue,\n\t\t)\n\t}\n}"},"caller":{"type":"direct"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":665,"cache_read_input_tokens":49609,"output_tokens":467,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":665,"ephemeral_5m_input_tokens":0},"inference_geo":"","iterations":[],"speed":"standard"}},"requestId":"req_011CYhoRjfo1PnCdoWGDQNot","type":"assistant","uuid":"883d8f12-a333-451f-a88c-d1372459ddf3","timestamp":"2026-03-04T09:26:52.909Z"} 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/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/archive.go has been updated successfully."}]},"uuid":"d634b95b-ab0a-4e6d-989b-8e1b906c9359","timestamp":"2026-03-04T09:26:52.947Z","toolUseResult":{"filePath":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/archive.go","oldString":"func CleanUp(wg *sync.WaitGroup, ctx context.Context) {\n\tif Keys.Cleanup.Mode == \"archive\" {\n\t\t// Run as Archiver\n\t\tcleanUpWorker(wg, ctx,\n\t\t\tKeys.Cleanup.Interval,\n\t\t\t\"archiving\",\n\t\t\tKeys.Cleanup.RootDir,\n\t\t\tfalse,\n\t\t)\n\t} else {\n\t\tif Keys.Cleanup.Interval == \"\" {\n\t\t\tKeys.Cleanup.Interval = Keys.RetentionInMemory\n\t\t}\n\n\t\t// Run as Deleter\n\t\tcleanUpWorker(wg, ctx,\n\t\t\tKeys.Cleanup.Interval,\n\t\t\t\"deleting\",\n\t\t\t\"\",\n\t\t\ttrue,\n\t\t)\n\t}\n}","newString":"func CleanUp(wg *sync.WaitGroup, ctx context.Context) {\n\tif Keys.Cleanup.Mode == \"archive\" {\n\t\t// Run as Archiver\n\t\tcleanUpWorker(wg, ctx,\n\t\t\tKeys.RetentionInMemory,\n\t\t\t\"archiving\",\n\t\t\tKeys.Cleanup.RootDir,\n\t\t\tfalse,\n\t\t)\n\t} else {\n\t\t// Run as Deleter\n\t\tcleanUpWorker(wg, ctx,\n\t\t\tKeys.RetentionInMemory,\n\t\t\t\"deleting\",\n\t\t\t\"\",\n\t\t\ttrue,\n\t\t)\n\t}\n}","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 metricstore\n\nimport (\n\t\"context\"\n\t\"errors\"\n\t\"fmt\"\n\t\"os\"\n\t\"path/filepath\"\n\t\"sync\"\n\t\"sync/atomic\"\n\t\"time\"\n\n\tcclog \"github.com/ClusterCockpit/cc-lib/v2/ccLogger\"\n)\n\n// Worker for either Archiving or Deleting files\n\nfunc CleanUp(wg *sync.WaitGroup, ctx context.Context) {\n\tif Keys.Cleanup.Mode == \"archive\" {\n\t\t// Run as Archiver\n\t\tcleanUpWorker(wg, ctx,\n\t\t\tKeys.Cleanup.Interval,\n\t\t\t\"archiving\",\n\t\t\tKeys.Cleanup.RootDir,\n\t\t\tfalse,\n\t\t)\n\t} else {\n\t\tif Keys.Cleanup.Interval == \"\" {\n\t\t\tKeys.Cleanup.Interval = Keys.RetentionInMemory\n\t\t}\n\n\t\t// Run as Deleter\n\t\tcleanUpWorker(wg, ctx,\n\t\t\tKeys.Cleanup.Interval,\n\t\t\t\"deleting\",\n\t\t\t\"\",\n\t\t\ttrue,\n\t\t)\n\t}\n}\n\n// cleanUpWorker takes simple values to configure what it does\nfunc cleanUpWorker(wg *sync.WaitGroup, ctx context.Context, interval string, mode string, cleanupDir string, delete bool) {\n\twg.Go(func() {\n\n\t\td, err := time.ParseDuration(interval)\n\t\tif err != nil {\n\t\t\tcclog.Fatalf(\"[METRICSTORE]> error parsing %s interval duration: %v\\n\", mode, err)\n\t\t}\n\t\tif d <= 0 {\n\t\t\treturn\n\t\t}\n\n\t\tticker := time.NewTicker(d)\n\t\tdefer ticker.Stop()\n\n\t\tfor {\n\t\t\tselect {\n\t\t\tcase <-ctx.Done():\n\t\t\t\treturn\n\t\t\tcase <-ticker.C:\n\t\t\t\tt := time.Now().Add(-d)\n\t\t\t\tcclog.Infof(\"[METRICSTORE]> start %s checkpoints (older than %s)...\", mode, t.Format(time.RFC3339))\n\n\t\t\t\tn, err := CleanupCheckpoints(Keys.Checkpoints.RootDir, cleanupDir, t.Unix(), delete)\n\n\t\t\t\tif err != nil {\n\t\t\t\t\tcclog.Errorf(\"[METRICSTORE]> %s failed: %s\", mode, err.Error())\n\t\t\t\t} else {\n\t\t\t\t\tif delete {\n\t\t\t\t\t\tcclog.Infof(\"[METRICSTORE]> done: %d checkpoints deleted\", n)\n\t\t\t\t\t} else {\n\t\t\t\t\t\tcclog.Infof(\"[METRICSTORE]> done: %d checkpoint files archived to parquet\", n)\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t})\n}\n\nvar ErrNoNewArchiveData error = errors.New(\"all data already archived\")\n\n// CleanupCheckpoints deletes or archives all checkpoint files older than `from`.\n// When archiving, consolidates all hosts per cluster into a single Parquet file.\nfunc CleanupCheckpoints(checkpointsDir, cleanupDir string, from int64, deleteInstead bool) (int, error) {\n\tif deleteInstead {\n\t\treturn deleteCheckpoints(checkpointsDir, from)\n\t}\n\n\treturn archiveCheckpoints(checkpointsDir, cleanupDir, from)\n}\n\n// deleteCheckpoints removes checkpoint files older than `from` across all clusters/hosts.\nfunc deleteCheckpoints(checkpointsDir string, from int64) (int, error) {\n\tentries1, err := os.ReadDir(checkpointsDir)\n\tif err != nil {\n\t\treturn 0, err\n\t}\n\n\ttype workItem struct {\n\t\tdir string\n\t\tcluster, host string\n\t}\n\n\tvar wg sync.WaitGroup\n\tn, errs := int32(0), int32(0)\n\twork := make(chan workItem, Keys.NumWorkers)\n\n\twg.Add(Keys.NumWorkers)\n\tfor worker := 0; worker < Keys.NumWorkers; worker++ {\n\t\tgo func() {\n\t\t\tdefer wg.Done()\n\t\t\tfor item := range work {\n\t\t\t\tentries, err := os.ReadDir(item.dir)\n\t\t\t\tif err != nil {\n\t\t\t\t\tcclog.Errorf(\"error reading %s/%s: %s\", item.cluster, item.host, err.Error())\n\t\t\t\t\tatomic.AddInt32(&errs, 1)\n\t\t\t\t\tcontinue\n\t\t\t\t}\n\n\t\t\t\tfiles, err := findFiles(entries, from, false)\n\t\t\t\tif err != nil {\n\t\t\t\t\tcclog.Errorf(\"error finding files in %s/%s: %s\", item.cluster, item.host, err.Error())\n\t\t\t\t\tatomic.AddInt32(&errs, 1)\n\t\t\t\t\tcontinue\n\t\t\t\t}\n\n\t\t\t\tfor _, checkpoint := range files {\n\t\t\t\t\tif err := os.Remove(filepath.Join(item.dir, checkpoint)); err != nil {\n\t\t\t\t\t\tcclog.Errorf(\"error deleting %s/%s/%s: %s\", item.cluster, item.host, checkpoint, err.Error())\n\t\t\t\t\t\tatomic.AddInt32(&errs, 1)\n\t\t\t\t\t} else {\n\t\t\t\t\t\tatomic.AddInt32(&n, 1)\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}()\n\t}\n\n\tfor _, de1 := range entries1 {\n\t\tentries2, e := os.ReadDir(filepath.Join(checkpointsDir, de1.Name()))\n\t\tif e != nil {\n\t\t\terr = e\n\t\t\tcontinue\n\t\t}\n\n\t\tfor _, de2 := range entries2 {\n\t\t\twork <- workItem{\n\t\t\t\tdir: filepath.Join(checkpointsDir, de1.Name(), de2.Name()),\n\t\t\t\tcluster: de1.Name(),\n\t\t\t\thost: de2.Name(),\n\t\t\t}\n\t\t}\n\t}\n\n\tclose(work)\n\twg.Wait()\n\n\tif err != nil {\n\t\treturn int(n), err\n\t}\n\tif errs > 0 {\n\t\treturn int(n), fmt.Errorf(\"%d errors happened while deleting (%d successes)\", errs, n)\n\t}\n\treturn int(n), nil\n}\n\n// archiveCheckpoints archives checkpoint files to Parquet format.\n// Produces one Parquet file per cluster: //.parquet\nfunc archiveCheckpoints(checkpointsDir, cleanupDir string, from int64) (int, error) {\n\tclusterEntries, err := os.ReadDir(checkpointsDir)\n\tif err != nil {\n\t\treturn 0, err\n\t}\n\n\ttotalFiles := 0\n\n\tfor _, clusterEntry := range clusterEntries {\n\t\tif !clusterEntry.IsDir() {\n\t\t\tcontinue\n\t\t}\n\n\t\tcluster := clusterEntry.Name()\n\t\thostEntries, err := os.ReadDir(filepath.Join(checkpointsDir, cluster))\n\t\tif err != nil {\n\t\t\treturn totalFiles, err\n\t\t}\n\n\t\t// Collect rows from all hosts in this cluster using worker pool\n\t\ttype hostResult struct {\n\t\t\trows []ParquetMetricRow\n\t\t\tfiles []string // checkpoint filenames to delete after successful write\n\t\t\tdir string // checkpoint directory for this host\n\t\t}\n\n\t\tresults := make(chan hostResult, len(hostEntries))\n\t\twork := make(chan struct {\n\t\t\tdir, host string\n\t\t}, Keys.NumWorkers)\n\n\t\tvar wg sync.WaitGroup\n\t\terrs := int32(0)\n\n\t\twg.Add(Keys.NumWorkers)\n\t\tfor w := 0; w < Keys.NumWorkers; w++ {\n\t\t\tgo func() {\n\t\t\t\tdefer wg.Done()\n\t\t\t\tfor item := range work {\n\t\t\t\t\trows, files, err := archiveCheckpointsToParquet(item.dir, cluster, item.host, from)\n\t\t\t\t\tif err != nil {\n\t\t\t\t\t\tcclog.Errorf(\"[METRICSTORE]> error reading checkpoints for %s/%s: %s\", cluster, item.host, err.Error())\n\t\t\t\t\t\tatomic.AddInt32(&errs, 1)\n\t\t\t\t\t\tcontinue\n\t\t\t\t\t}\n\t\t\t\t\tif len(rows) > 0 {\n\t\t\t\t\t\tresults <- hostResult{rows: rows, files: files, dir: item.dir}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}()\n\t\t}\n\n\t\tgo func() {\n\t\t\tfor _, hostEntry := range hostEntries {\n\t\t\t\tif !hostEntry.IsDir() {\n\t\t\t\t\tcontinue\n\t\t\t\t}\n\t\t\t\tdir := filepath.Join(checkpointsDir, cluster, hostEntry.Name())\n\t\t\t\twork <- struct {\n\t\t\t\t\tdir, host string\n\t\t\t\t}{dir: dir, host: hostEntry.Name()}\n\t\t\t}\n\t\t\tclose(work)\n\t\t\twg.Wait()\n\t\t\tclose(results)\n\t\t}()\n\n\t\t// Collect all rows and file info\n\t\tvar allRows []ParquetMetricRow\n\t\tvar allResults []hostResult\n\t\tfor r := range results {\n\t\t\tallRows = append(allRows, r.rows...)\n\t\t\tallResults = append(allResults, r)\n\t\t}\n\n\t\tif errs > 0 {\n\t\t\treturn totalFiles, fmt.Errorf(\"%d errors reading checkpoints for cluster %s\", errs, cluster)\n\t\t}\n\n\t\tif len(allRows) == 0 {\n\t\t\tcontinue\n\t\t}\n\n\t\t// Write one Parquet file per cluster\n\t\tparquetFile := filepath.Join(cleanupDir, cluster, fmt.Sprintf(\"%d.parquet\", from))\n\t\tif err := writeParquetArchive(parquetFile, allRows); err != nil {\n\t\t\treturn totalFiles, fmt.Errorf(\"writing parquet archive for cluster %s: %w\", cluster, err)\n\t\t}\n\n\t\t// Delete archived checkpoint files\n\t\tfor _, result := range allResults {\n\t\t\tfor _, file := range result.files {\n\t\t\t\tfilename := filepath.Join(result.dir, file)\n\t\t\t\tif err := os.Remove(filename); err != nil {\n\t\t\t\t\tcclog.Warnf(\"[METRICSTORE]> could not remove archived checkpoint %s: %v\", filename, err)\n\t\t\t\t} else {\n\t\t\t\t\ttotalFiles++\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\tcclog.Infof(\"[METRICSTORE]> archived %d rows from %d files for cluster %s to %s\",\n\t\t\tlen(allRows), totalFiles, cluster, parquetFile)\n\t}\n\n\treturn totalFiles, nil\n}\n","structuredPatch":[{"oldStart":24,"oldLines":19,"newStart":24,"newLines":15,"lines":[" if Keys.Cleanup.Mode == \"archive\" {"," // Run as Archiver"," cleanUpWorker(wg, ctx,","- Keys.Cleanup.Interval,","+ Keys.RetentionInMemory,"," \"archiving\","," Keys.Cleanup.RootDir,"," false,"," )"," } else {","- if Keys.Cleanup.Interval == \"\" {","- Keys.Cleanup.Interval = Keys.RetentionInMemory","- }","-"," // Run as Deleter"," cleanUpWorker(wg, ctx,","- Keys.Cleanup.Interval,","+ Keys.RetentionInMemory,"," \"deleting\","," \"\","," true,"]}],"userModified":false,"replaceAll":false},"sourceToolAssistantUUID":"883d8f12-a333-451f-a88c-d1372459ddf3"} +{"parentUuid":"d634b95b-ab0a-4e6d-989b-8e1b906c9359","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","message":{"model":"claude-sonnet-4-6","id":"msg_016FYzP7YzyKhFhVHmvs6Hc6","type":"message","role":"assistant","content":[{"type":"thinking","thinking":"The diagnostics are showing compiler errors about missing methods (ToCheckpointWAL, RotateWALFiles, loadBinaryFile, loadWALFile). These are likely defined in another file (walCheckpoint.go) - these aren't new errors introduced by my changes, they might already exist or be from another file. Let me check.","signature":"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"}],"stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":838,"cache_read_input_tokens":50274,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":838},"output_tokens":8,"service_tier":"standard","inference_geo":"not_available"}},"requestId":"req_011CYhoSAZkk95oWGuBB1g1H","type":"assistant","uuid":"ed6fee07-e615-4429-9a28-77d4e2c5ccba","timestamp":"2026-03-04T09:26:55.937Z"} +{"parentUuid":"ed6fee07-e615-4429-9a28-77d4e2c5ccba","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","message":{"model":"claude-sonnet-4-6","id":"msg_016FYzP7YzyKhFhVHmvs6Hc6","type":"message","role":"assistant","content":[{"type":"text","text":"Those diagnostics appear to be pre-existing (related to WAL methods in another file). Let me verify they existed before my changes:"}],"stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":838,"cache_read_input_tokens":50274,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":838},"output_tokens":8,"service_tier":"standard","inference_geo":"not_available"}},"requestId":"req_011CYhoSAZkk95oWGuBB1g1H","type":"assistant","uuid":"55a9a15c-bc91-43b9-b6fc-69cc23b6d286","timestamp":"2026-03-04T09:26:57.286Z"} +{"parentUuid":"55a9a15c-bc91-43b9-b6fc-69cc23b6d286","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","message":{"model":"claude-sonnet-4-6","id":"msg_016FYzP7YzyKhFhVHmvs6Hc6","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01WeeLw1TjLrLUeRVQMTGQ2M","name":"Glob","input":{"pattern":"pkg/metricstore/wal*.go","path":"/Users/jan/prg/ClusterCockpit/cc-backend"},"caller":{"type":"direct"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":838,"cache_read_input_tokens":50274,"output_tokens":215,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":838,"ephemeral_5m_input_tokens":0},"inference_geo":"","iterations":[],"speed":"standard"}},"requestId":"req_011CYhoSAZkk95oWGuBB1g1H","type":"assistant","uuid":"468fbd7d-1565-4658-a4c9-5d781ec2d880","timestamp":"2026-03-04T09:26:57.404Z"} +{"parentUuid":"468fbd7d-1565-4658-a4c9-5d781ec2d880","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","type":"progress","data":{"type":"hook_progress","hookEvent":"PostToolUse","hookName":"PostToolUse:Glob","command":"callback"},"parentToolUseID":"toolu_01WeeLw1TjLrLUeRVQMTGQ2M","toolUseID":"toolu_01WeeLw1TjLrLUeRVQMTGQ2M","timestamp":"2026-03-04T09:26:57.846Z","uuid":"99a3f471-1e11-4a7a-8d51-70c52bc9087c"} +{"parentUuid":"468fbd7d-1565-4658-a4c9-5d781ec2d880","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01WeeLw1TjLrLUeRVQMTGQ2M","type":"tool_result","content":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/walCheckpoint.go"}]},"uuid":"14a545b2-9d74-4030-a2d1-5878b5ec49d9","timestamp":"2026-03-04T09:26:57.845Z","toolUseResult":{"filenames":["/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/walCheckpoint.go"],"durationMs":417,"numFiles":1,"truncated":false},"sourceToolAssistantUUID":"468fbd7d-1565-4658-a4c9-5d781ec2d880"} +{"parentUuid":"14a545b2-9d74-4030-a2d1-5878b5ec49d9","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","message":{"model":"claude-sonnet-4-6","id":"msg_01S8LzMFQcjHd2PVzFp9pUNW","type":"message","role":"assistant","content":[{"type":"thinking","thinking":"These compiler errors look like pre-existing issues - the `ParquetMetricRow`, `archiveCheckpointsToParquet`, and `writeParquetArchive` are probably defined in another file. These aren't new issues I introduced. Let me check the build status to confirm.\n\nLet me now update the configSchema.go and the config files.","signature":"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"}],"stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":492,"cache_read_input_tokens":51112,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":492},"output_tokens":8,"service_tier":"standard","inference_geo":"not_available"}},"requestId":"req_011CYhoSXWqPvZ8teoEZBwdJ","type":"assistant","uuid":"35a32b9d-29e2-494d-b0d1-52ef5e7bc97d","timestamp":"2026-03-04T09:27:04.850Z"} +{"parentUuid":"35a32b9d-29e2-494d-b0d1-52ef5e7bc97d","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","message":{"model":"claude-sonnet-4-6","id":"msg_01S8LzMFQcjHd2PVzFp9pUNW","type":"message","role":"assistant","content":[{"type":"text","text":"These diagnostics are pre-existing (not caused by my changes). Now update the schema and config files:"}],"stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":492,"cache_read_input_tokens":51112,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":492},"output_tokens":8,"service_tier":"standard","inference_geo":"not_available"}},"requestId":"req_011CYhoSXWqPvZ8teoEZBwdJ","type":"assistant","uuid":"173aa997-7b4b-4777-9195-bcff1b0df544","timestamp":"2026-03-04T09:27:05.244Z"} +{"parentUuid":"173aa997-7b4b-4777-9195-bcff1b0df544","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","message":{"model":"claude-sonnet-4-6","id":"msg_01S8LzMFQcjHd2PVzFp9pUNW","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01JNtM2ygnHz7kChrb7F7mk6","name":"Edit","input":{"replace_all":false,"file_path":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/configSchema.go","old_string":" \"checkpoints\": {\n \"description\": \"Configuration for checkpointing the metrics buffers\",\n \"type\": \"object\",\n \"properties\": {\n \"file-format\": {\n \"description\": \"Specify the format for checkpoint files. Two variants: 'json' (human-readable, periodic) and 'wal' (binary snapshot + Write-Ahead Log, crash-safe). Default is 'json'.\",\n \"type\": \"string\"\n },\n \"interval\": {\n \"description\": \"Interval at which the metrics should be checkpointed.\",\n \"type\": \"string\"\n },\n \"directory\": {\n \"description\": \"Path in which the checkpointed files should be placed.\",\n \"type\": \"string\"\n }\n },\n \"required\": [\"interval\"]\n },","new_string":" \"checkpoints\": {\n \"description\": \"Configuration for checkpointing the metrics buffers\",\n \"type\": \"object\",\n \"properties\": {\n \"file-format\": {\n \"description\": \"Specify the format for checkpoint files. Two variants: 'json' (human-readable, periodic) and 'wal' (binary snapshot + Write-Ahead Log, crash-safe). Default is 'wal'.\",\n \"type\": \"string\"\n },\n \"directory\": {\n \"description\": \"Path in which the checkpointed files should be placed.\",\n \"type\": \"string\"\n }\n }\n },"},"caller":{"type":"direct"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":492,"cache_read_input_tokens":51112,"output_tokens":597,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":492,"ephemeral_5m_input_tokens":0},"inference_geo":"","iterations":[],"speed":"standard"}},"requestId":"req_011CYhoSXWqPvZ8teoEZBwdJ","type":"assistant","uuid":"35626430-48b0-43a1-b852-fa5ee643047c","timestamp":"2026-03-04T09:27:10.508Z"} +{"type":"file-history-snapshot","messageId":"35626430-48b0-43a1-b852-fa5ee643047c","snapshot":{"messageId":"f9f69cd7-691d-46b4-9e30-43ffeabb85a6","trackedFileBackups":{"pkg/metricstore/config.go":{"backupFileName":"614b3f053f832cad@v1","version":1,"backupTime":"2026-03-04T09:26:09.235Z"},"pkg/metricstore/checkpoint.go":{"backupFileName":"6cd2cc2f9fa35484@v1","version":1,"backupTime":"2026-03-04T09:26:47.115Z"},"pkg/metricstore/archive.go":{"backupFileName":"e494d1fe775e2cee@v1","version":1,"backupTime":"2026-03-04T09:26:52.946Z"},"pkg/metricstore/configSchema.go":{"backupFileName":"5a1be5ca7fda54fe@v1","version":1,"backupTime":"2026-03-04T09:27:10.548Z"}},"timestamp":"2026-03-04T09:25:30.352Z"},"isSnapshotUpdate":true} +{"parentUuid":"35626430-48b0-43a1-b852-fa5ee643047c","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","type":"progress","data":{"type":"hook_progress","hookEvent":"PostToolUse","hookName":"PostToolUse:Edit","command":"callback"},"parentToolUseID":"toolu_01JNtM2ygnHz7kChrb7F7mk6","toolUseID":"toolu_01JNtM2ygnHz7kChrb7F7mk6","timestamp":"2026-03-04T09:27:10.550Z","uuid":"d26ac048-0ad8-4468-b7e1-f9a3dd1457fc"} +{"parentUuid":"35626430-48b0-43a1-b852-fa5ee643047c","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01JNtM2ygnHz7kChrb7F7mk6","type":"tool_result","content":"The file /Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/configSchema.go has been updated successfully."}]},"uuid":"dc59a58e-9626-4086-82ac-bdc2ef3ce84b","timestamp":"2026-03-04T09:27:10.549Z","toolUseResult":{"filePath":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/configSchema.go","oldString":" \"checkpoints\": {\n \"description\": \"Configuration for checkpointing the metrics buffers\",\n \"type\": \"object\",\n \"properties\": {\n \"file-format\": {\n \"description\": \"Specify the format for checkpoint files. Two variants: 'json' (human-readable, periodic) and 'wal' (binary snapshot + Write-Ahead Log, crash-safe). Default is 'json'.\",\n \"type\": \"string\"\n },\n \"interval\": {\n \"description\": \"Interval at which the metrics should be checkpointed.\",\n \"type\": \"string\"\n },\n \"directory\": {\n \"description\": \"Path in which the checkpointed files should be placed.\",\n \"type\": \"string\"\n }\n },\n \"required\": [\"interval\"]\n },","newString":" \"checkpoints\": {\n \"description\": \"Configuration for checkpointing the metrics buffers\",\n \"type\": \"object\",\n \"properties\": {\n \"file-format\": {\n \"description\": \"Specify the format for checkpoint files. Two variants: 'json' (human-readable, periodic) and 'wal' (binary snapshot + Write-Ahead Log, crash-safe). Default is 'wal'.\",\n \"type\": \"string\"\n },\n \"directory\": {\n \"description\": \"Path in which the checkpointed files should be placed.\",\n \"type\": \"string\"\n }\n }\n },","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 metricstore\n\nconst configSchema = `{\n \"type\": \"object\",\n \"description\": \"Configuration specific to built-in metric-store.\",\n \"properties\": {\n \"num-workers\": {\n \"description\": \"Number of concurrent workers for checkpoint and archive operations\",\n \"type\": \"integer\"\n },\n \"checkpoints\": {\n \"description\": \"Configuration for checkpointing the metrics buffers\",\n \"type\": \"object\",\n \"properties\": {\n \"file-format\": {\n \"description\": \"Specify the format for checkpoint files. Two variants: 'json' (human-readable, periodic) and 'wal' (binary snapshot + Write-Ahead Log, crash-safe). Default is 'json'.\",\n \"type\": \"string\"\n },\n \"interval\": {\n \"description\": \"Interval at which the metrics should be checkpointed.\",\n \"type\": \"string\"\n },\n \"directory\": {\n \"description\": \"Path in which the checkpointed files should be placed.\",\n \"type\": \"string\"\n }\n },\n \"required\": [\"interval\"]\n },\n \"cleanup\": {\n \"description\": \"Configuration for the cleanup process.\",\n \"type\": \"object\",\n \"properties\": {\n \"mode\": {\n \"description\": \"The operation mode (e.g., 'archive' or 'delete').\",\n \"type\": \"string\",\n \"enum\": [\"archive\", \"delete\"] \n },\n \"interval\": {\n \"description\": \"Interval at which the cleanup runs.\",\n \"type\": \"string\"\n },\n \"directory\": {\n \"description\": \"Target directory for operations.\",\n \"type\": \"string\"\n }\n },\n \"if\": {\n \"properties\": {\n \"mode\": { \"const\": \"archive\" }\n }\n },\n \"then\": {\n \"required\": [\"interval\", \"directory\"]\n }\n },\n \"retention-in-memory\": {\n \"description\": \"Keep the metrics within memory for given time interval. Retention for X hours, then the metrics would be freed.\",\n \"type\": \"string\"\n },\n \"memory-cap\": {\n \"description\": \"Upper memory capacity limit used by metricstore in GB\",\n \"type\": \"integer\"\n },\n \"nats-subscriptions\": {\n \"description\": \"Array of various subscriptions. Allows to subscribe to different subjects and publishers.\",\n \"type\": \"array\",\n \"items\": {\n \"type\": \"object\",\n \"properties\": {\n \"subscribe-to\": {\n \"description\": \"Subject name\",\n \"type\": \"string\"\n },\n \"cluster-tag\": {\n \"description\": \"Optional: Allow lines without a cluster tag, use this as default\",\n \"type\": \"string\"\n }\n },\n\t\t\t\t\"required\": [\"subscribe-to\"]\n }\n }\n },\n \"required\": [\"checkpoints\", \"retention-in-memory\", \"memory-cap\"]\n}`\n","structuredPatch":[{"oldStart":18,"oldLines":19,"newStart":18,"newLines":14,"lines":[" \"type\": \"object\","," \"properties\": {"," \"file-format\": {","- \"description\": \"Specify the format for checkpoint files. Two variants: 'json' (human-readable, periodic) and 'wal' (binary snapshot + Write-Ahead Log, crash-safe). Default is 'json'.\",","+ \"description\": \"Specify the format for checkpoint files. Two variants: 'json' (human-readable, periodic) and 'wal' (binary snapshot + Write-Ahead Log, crash-safe). Default is 'wal'.\","," \"type\": \"string\""," },","- \"interval\": {","- \"description\": \"Interval at which the metrics should be checkpointed.\",","- \"type\": \"string\"","- },"," \"directory\": {"," \"description\": \"Path in which the checkpointed files should be placed.\","," \"type\": \"string\""," }","- },","- \"required\": [\"interval\"]","+ }"," },"," \"cleanup\": {"," \"description\": \"Configuration for the cleanup process.\","]}],"userModified":false,"replaceAll":false},"sourceToolAssistantUUID":"35626430-48b0-43a1-b852-fa5ee643047c"} +{"parentUuid":"dc59a58e-9626-4086-82ac-bdc2ef3ce84b","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","message":{"model":"claude-sonnet-4-6","id":"msg_018XYnAonRDSUhqKukcPVm8a","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01GUuSo2gJkmmoHraiWiVn66","name":"Edit","input":{"replace_all":false,"file_path":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/configSchema.go","old_string":" \"cleanup\": {\n \"description\": \"Configuration for the cleanup process.\",\n \"type\": \"object\",\n \"properties\": {\n \"mode\": {\n \"description\": \"The operation mode (e.g., 'archive' or 'delete').\",\n \"type\": \"string\",\n \"enum\": [\"archive\", \"delete\"] \n },\n \"interval\": {\n \"description\": \"Interval at which the cleanup runs.\",\n \"type\": \"string\"\n },\n \"directory\": {\n \"description\": \"Target directory for operations.\",\n \"type\": \"string\"\n }\n },\n \"if\": {\n \"properties\": {\n \"mode\": { \"const\": \"archive\" }\n }\n },\n \"then\": {\n \"required\": [\"interval\", \"directory\"]\n }\n },","new_string":" \"cleanup\": {\n \"description\": \"Configuration for the cleanup process. The cleanup interval is always 'retention-in-memory'.\",\n \"type\": \"object\",\n \"properties\": {\n \"mode\": {\n \"description\": \"The operation mode (e.g., 'archive' or 'delete').\",\n \"type\": \"string\",\n \"enum\": [\"archive\", \"delete\"]\n },\n \"directory\": {\n \"description\": \"Target directory for archive operations.\",\n \"type\": \"string\"\n }\n },\n \"if\": {\n \"properties\": {\n \"mode\": { \"const\": \"archive\" }\n }\n },\n \"then\": {\n \"required\": [\"directory\"]\n }\n },"},"caller":{"type":"direct"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":642,"cache_read_input_tokens":51604,"output_tokens":516,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":642,"ephemeral_5m_input_tokens":0},"inference_geo":"","iterations":[],"speed":"standard"}},"requestId":"req_011CYhoTTqr52rFJpmaqBGQJ","type":"assistant","uuid":"6339fae5-ea89-48d6-8d94-a1ae284f4bc8","timestamp":"2026-03-04T09:27:18.443Z"} +{"parentUuid":"6339fae5-ea89-48d6-8d94-a1ae284f4bc8","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","type":"progress","data":{"type":"hook_progress","hookEvent":"PostToolUse","hookName":"PostToolUse:Edit","command":"callback"},"parentToolUseID":"toolu_01GUuSo2gJkmmoHraiWiVn66","toolUseID":"toolu_01GUuSo2gJkmmoHraiWiVn66","timestamp":"2026-03-04T09:27:18.486Z","uuid":"be9b34bd-1811-4562-986b-fd74f290e177"} +{"parentUuid":"6339fae5-ea89-48d6-8d94-a1ae284f4bc8","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01GUuSo2gJkmmoHraiWiVn66","type":"tool_result","content":"The file /Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/configSchema.go has been updated successfully."}]},"uuid":"a68a7c01-ffa9-4b1d-a68d-f25c5fafffb4","timestamp":"2026-03-04T09:27:18.485Z","toolUseResult":{"filePath":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/configSchema.go","oldString":" \"cleanup\": {\n \"description\": \"Configuration for the cleanup process.\",\n \"type\": \"object\",\n \"properties\": {\n \"mode\": {\n \"description\": \"The operation mode (e.g., 'archive' or 'delete').\",\n \"type\": \"string\",\n \"enum\": [\"archive\", \"delete\"] \n },\n \"interval\": {\n \"description\": \"Interval at which the cleanup runs.\",\n \"type\": \"string\"\n },\n \"directory\": {\n \"description\": \"Target directory for operations.\",\n \"type\": \"string\"\n }\n },\n \"if\": {\n \"properties\": {\n \"mode\": { \"const\": \"archive\" }\n }\n },\n \"then\": {\n \"required\": [\"interval\", \"directory\"]\n }\n },","newString":" \"cleanup\": {\n \"description\": \"Configuration for the cleanup process. The cleanup interval is always 'retention-in-memory'.\",\n \"type\": \"object\",\n \"properties\": {\n \"mode\": {\n \"description\": \"The operation mode (e.g., 'archive' or 'delete').\",\n \"type\": \"string\",\n \"enum\": [\"archive\", \"delete\"]\n },\n \"directory\": {\n \"description\": \"Target directory for archive operations.\",\n \"type\": \"string\"\n }\n },\n \"if\": {\n \"properties\": {\n \"mode\": { \"const\": \"archive\" }\n }\n },\n \"then\": {\n \"required\": [\"directory\"]\n }\n },","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 metricstore\n\nconst configSchema = `{\n \"type\": \"object\",\n \"description\": \"Configuration specific to built-in metric-store.\",\n \"properties\": {\n \"num-workers\": {\n \"description\": \"Number of concurrent workers for checkpoint and archive operations\",\n \"type\": \"integer\"\n },\n \"checkpoints\": {\n \"description\": \"Configuration for checkpointing the metrics buffers\",\n \"type\": \"object\",\n \"properties\": {\n \"file-format\": {\n \"description\": \"Specify the format for checkpoint files. Two variants: 'json' (human-readable, periodic) and 'wal' (binary snapshot + Write-Ahead Log, crash-safe). Default is 'wal'.\",\n \"type\": \"string\"\n },\n \"directory\": {\n \"description\": \"Path in which the checkpointed files should be placed.\",\n \"type\": \"string\"\n }\n }\n },\n \"cleanup\": {\n \"description\": \"Configuration for the cleanup process.\",\n \"type\": \"object\",\n \"properties\": {\n \"mode\": {\n \"description\": \"The operation mode (e.g., 'archive' or 'delete').\",\n \"type\": \"string\",\n \"enum\": [\"archive\", \"delete\"] \n },\n \"interval\": {\n \"description\": \"Interval at which the cleanup runs.\",\n \"type\": \"string\"\n },\n \"directory\": {\n \"description\": \"Target directory for operations.\",\n \"type\": \"string\"\n }\n },\n \"if\": {\n \"properties\": {\n \"mode\": { \"const\": \"archive\" }\n }\n },\n \"then\": {\n \"required\": [\"interval\", \"directory\"]\n }\n },\n \"retention-in-memory\": {\n \"description\": \"Keep the metrics within memory for given time interval. Retention for X hours, then the metrics would be freed.\",\n \"type\": \"string\"\n },\n \"memory-cap\": {\n \"description\": \"Upper memory capacity limit used by metricstore in GB\",\n \"type\": \"integer\"\n },\n \"nats-subscriptions\": {\n \"description\": \"Array of various subscriptions. 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compiles:"}],"stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":213,"cache_read_input_tokens":53143,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":213},"output_tokens":1,"service_tier":"standard","inference_geo":"not_available"}},"requestId":"req_011CYhoUb9RNeskB9aMq43md","type":"assistant","uuid":"264adc5c-81fe-42e6-8ff0-528cee14ac2a","timestamp":"2026-03-04T09:27:29.659Z"} +{"parentUuid":"264adc5c-81fe-42e6-8ff0-528cee14ac2a","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","message":{"model":"claude-sonnet-4-6","id":"msg_01K6CCEVTUGqu3iSZznczXZm","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01BuXkVBaMCFsDJqvf84Um9a","name":"Bash","input":{"command":"go build ./... 2>&1","description":"Build all packages to verify no 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Let me run the metricstore tests:"}],"stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":211,"cache_read_input_tokens":53356,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":211},"output_tokens":1,"service_tier":"standard","inference_geo":"not_available"}},"requestId":"req_011CYhoVTPsKmkmhsE8iicvs","type":"assistant","uuid":"078870c7-b3a2-4f26-9675-c13b58d50361","timestamp":"2026-03-04T09:27:40.454Z"} +{"parentUuid":"078870c7-b3a2-4f26-9675-c13b58d50361","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","message":{"model":"claude-sonnet-4-6","id":"msg_01LVS4JU2V1KDXNDWwwQTXfb","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01GAbcaAdXV7ZvrmsdE3T74n","name":"Bash","input":{"command":"go test ./pkg/metricstore/... 2>&1","description":"Run metricstore tests"},"caller":{"type":"direct"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":211,"cache_read_input_tokens":53356,"output_tokens":99,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":211,"ephemeral_5m_input_tokens":0},"inference_geo":"","iterations":[],"speed":"standard"}},"requestId":"req_011CYhoVTPsKmkmhsE8iicvs","type":"assistant","uuid":"18272b1e-9328-429e-9705-fffc35c2b9c0","timestamp":"2026-03-04T09:27:40.724Z"} +{"parentUuid":"18272b1e-9328-429e-9705-fffc35c2b9c0","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01GAbcaAdXV7ZvrmsdE3T74n","type":"tool_result","content":"ok \tgithub.com/ClusterCockpit/cc-backend/pkg/metricstore\t0.474s","is_error":false}]},"uuid":"336c1674-d65d-4cde-9c08-3cd31f5714f0","timestamp":"2026-03-04T09:27:42.499Z","toolUseResult":{"stdout":"ok \tgithub.com/ClusterCockpit/cc-backend/pkg/metricstore\t0.474s","stderr":"","interrupted":false,"isImage":false,"noOutputExpected":false},"sourceToolAssistantUUID":"18272b1e-9328-429e-9705-fffc35c2b9c0"} +{"parentUuid":"336c1674-d65d-4cde-9c08-3cd31f5714f0","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","message":{"model":"claude-sonnet-4-6","id":"msg_0122qq6vFpnGzMQj4NcRQ6nJ","type":"message","role":"assistant","content":[{"type":"text","text":"All tests pass. Here's a summary of what was changed:\n\n**`pkg/metricstore/config.go`**\n- Removed `Interval string` from `Checkpoints` struct\n- Removed `Interval string` from `Cleanup` struct\n- Changed default `FileFormat` from `\"json\"` to `\"wal\"`\n- Updated doc comments on both structs and the hierarchy comment\n\n**`pkg/metricstore/configSchema.go`**\n- Removed `\"interval\"` property from `checkpoints` and its `required` array\n- Removed `\"interval\"` property from `cleanup` and from the conditional `\"then\": required`\n- Updated `\"file-format\"` description to say default is `'wal'`\n\n**`pkg/metricstore/checkpoint.go`**\n- Replaced dynamic `time.ParseDuration(Keys.Checkpoints.Interval)` with `const checkpointInterval = 12 * time.Hour`\n\n**`pkg/metricstore/archive.go`**\n- Simplified `CleanUp()` to always pass `Keys.RetentionInMemory` as interval (both archive and delete modes)\n\n**`configs/config.json`** — removed `\"interval\": \"12h\"` from checkpoints, `\"interval\": \"48h\"` from cleanup\n\n**`configs/config-demo.json`** — removed `\"file-format\": \"wal\"` and `\"interval\": \"12h\"` from checkpoints (now both are defaults)"}],"stop_reason":"end_turn","stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":138,"cache_read_input_tokens":53567,"output_tokens":353,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":138,"ephemeral_5m_input_tokens":0},"inference_geo":"","iterations":[],"speed":"standard"}},"requestId":"req_011CYhoVpU92AEdVpoS8H1EF","type":"assistant","uuid":"aa357e78-7a39-4ffb-bb59-b6d88106e57c","timestamp":"2026-03-04T09:27:49.894Z"} 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Currently it's in the `required` array at the bottom of the schema. Let me check the current state of the schema file.","signature":"EuwCCkYICxgCKkDPK1kK3WoRgN47IH9g5zlwkUF5UKqQ9MVocs1/hSXg7evs3JyjeQDjsnDyUzoXTf2jECxrPg/cRIRHwSGY0PWPEgwqcfUPyLqXU0w0s50aDMWNHqxKpmVLk+2JViIwrsUs9RmXg7VECBW62lo5Dc+HnyxaqR123ZwEGMQh03og/WCJ/vM5HrfBiAMyngt5KtMBJ1qspsBzA51/8QXkL8EpB1eXeD3pz5KjlV6hEcq8dHQO2tQcr+USaAzIVm3kikmfnVC0RxPLtjdkRvuNFQjd0mumTRvDqFhEwAaOVX3Yi6Zeu2ie/hVoBSlrE4LrMKx6iaXw/+4h3uOdg0iz7lA5mjs+q2bA+kzytSNYTuXD/eGx7SjzovqmLBrhmRfUuuvSHqa2KE0mjAH/it1sJjaiPXAfeNzcA5FRdg06vVE3xc2XIiKKLF/Etpk91XPyvgpyoPxjyPoWLzGtIyIFE7/nxWQAThgB"}],"stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":3,"cache_creation_input_tokens":424,"cache_read_input_tokens":53705,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":424},"output_tokens":7,"service_tier":"standard","inference_geo":"not_available"}},"requestId":"req_011CYhp3iDz4yFadLFPS3yLa","type":"assistant","uuid":"3a396fdb-5f44-4d2c-8bdd-fe618dfdf60c","timestamp":"2026-03-04T09:34:57.746Z"} +{"parentUuid":"3a396fdb-5f44-4d2c-8bdd-fe618dfdf60c","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","message":{"model":"claude-sonnet-4-6","id":"msg_015TKTqmASEmrxCUExSUV6Rq","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01KCtxCs5pK7o98VQt8WYBET","name":"Read","input":{"file_path":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/configSchema.go"},"caller":{"type":"direct"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":3,"cache_creation_input_tokens":424,"cache_read_input_tokens":53705,"output_tokens":139,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":424,"ephemeral_5m_input_tokens":0},"inference_geo":"","iterations":[],"speed":"standard"}},"requestId":"req_011CYhp3iDz4yFadLFPS3yLa","type":"assistant","uuid":"ea3db158-eca9-428d-91e9-2dc5d38668d2","timestamp":"2026-03-04T09:34:58.128Z"} +{"parentUuid":"ea3db158-eca9-428d-91e9-2dc5d38668d2","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","type":"progress","data":{"type":"hook_progress","hookEvent":"PostToolUse","hookName":"PostToolUse:Read","command":"callback"},"parentToolUseID":"toolu_01KCtxCs5pK7o98VQt8WYBET","toolUseID":"toolu_01KCtxCs5pK7o98VQt8WYBET","timestamp":"2026-03-04T09:34:58.187Z","uuid":"dac9c044-51ef-4de3-9416-e53ae9625262"} +{"parentUuid":"ea3db158-eca9-428d-91e9-2dc5d38668d2","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01KCtxCs5pK7o98VQt8WYBET","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 metricstore\n 7→\n 8→const configSchema = `{\n 9→ \"type\": \"object\",\n 10→ \"description\": \"Configuration specific to built-in metric-store.\",\n 11→ \"properties\": {\n 12→ \"num-workers\": {\n 13→ \"description\": \"Number of concurrent workers for checkpoint and archive operations\",\n 14→ \"type\": \"integer\"\n 15→ },\n 16→ \"checkpoints\": {\n 17→ \"description\": \"Configuration for checkpointing the metrics buffers\",\n 18→ \"type\": \"object\",\n 19→ \"properties\": {\n 20→ \"file-format\": {\n 21→ \"description\": \"Specify the format for checkpoint files. Two variants: 'json' (human-readable, periodic) and 'wal' (binary snapshot + Write-Ahead Log, crash-safe). Default is 'wal'.\",\n 22→ \"type\": \"string\"\n 23→ },\n 24→ \"directory\": {\n 25→ \"description\": \"Path in which the checkpointed files should be placed.\",\n 26→ \"type\": \"string\"\n 27→ }\n 28→ }\n 29→ },\n 30→ \"cleanup\": {\n 31→ \"description\": \"Configuration for the cleanup process. The cleanup interval is always 'retention-in-memory'.\",\n 32→ \"type\": \"object\",\n 33→ \"properties\": {\n 34→ \"mode\": {\n 35→ \"description\": \"The operation mode (e.g., 'archive' or 'delete').\",\n 36→ \"type\": \"string\",\n 37→ \"enum\": [\"archive\", \"delete\"]\n 38→ },\n 39→ \"directory\": {\n 40→ \"description\": \"Target directory for archive operations.\",\n 41→ \"type\": \"string\"\n 42→ }\n 43→ },\n 44→ \"if\": {\n 45→ \"properties\": {\n 46→ \"mode\": { \"const\": \"archive\" }\n 47→ }\n 48→ },\n 49→ \"then\": {\n 50→ \"required\": [\"directory\"]\n 51→ }\n 52→ },\n 53→ \"retention-in-memory\": {\n 54→ \"description\": \"Keep the metrics within memory for given time interval. Retention for X hours, then the metrics would be freed.\",\n 55→ \"type\": \"string\"\n 56→ },\n 57→ \"memory-cap\": {\n 58→ \"description\": \"Upper memory capacity limit used by metricstore in GB\",\n 59→ \"type\": \"integer\"\n 60→ },\n 61→ \"nats-subscriptions\": {\n 62→ \"description\": \"Array of various subscriptions. Allows to subscribe to different subjects and publishers.\",\n 63→ \"type\": \"array\",\n 64→ \"items\": {\n 65→ \"type\": \"object\",\n 66→ \"properties\": {\n 67→ \"subscribe-to\": {\n 68→ \"description\": \"Subject name\",\n 69→ \"type\": \"string\"\n 70→ },\n 71→ \"cluster-tag\": {\n 72→ \"description\": \"Optional: Allow lines without a cluster tag, use this as default\",\n 73→ \"type\": \"string\"\n 74→ }\n 75→ },\n 76→\t\t\t\t\"required\": [\"subscribe-to\"]\n 77→ }\n 78→ }\n 79→ },\n 80→ \"required\": [\"checkpoints\", \"retention-in-memory\", \"memory-cap\"]\n 81→}`\n 82→\n\n\nWhenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. 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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 metricstore\n\nconst configSchema = `{\n \"type\": \"object\",\n \"description\": \"Configuration specific to built-in metric-store.\",\n \"properties\": {\n \"num-workers\": {\n \"description\": \"Number of concurrent workers for checkpoint and archive operations\",\n \"type\": \"integer\"\n },\n \"checkpoints\": {\n \"description\": \"Configuration for checkpointing the metrics buffers\",\n \"type\": \"object\",\n \"properties\": {\n \"file-format\": {\n \"description\": \"Specify the format for checkpoint files. Two variants: 'json' (human-readable, periodic) and 'wal' (binary snapshot + Write-Ahead Log, crash-safe). 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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 metricstore\n\nconst configSchema = `{\n \"type\": \"object\",\n \"description\": \"Configuration specific to built-in metric-store.\",\n \"properties\": {\n \"num-workers\": {\n \"description\": \"Number of concurrent workers for checkpoint and archive operations\",\n \"type\": \"integer\"\n },\n \"checkpoints\": {\n \"description\": \"Configuration for checkpointing the metrics buffers\",\n \"type\": \"object\",\n \"properties\": {\n \"file-format\": {\n \"description\": \"Specify the format for checkpoint files. Two variants: 'json' (human-readable, periodic) and 'wal' (binary snapshot + Write-Ahead Log, crash-safe). 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Retention for X hours, then the metrics would be freed.\",\n \"type\": \"string\"\n },\n \"memory-cap\": {\n \"description\": \"Upper memory capacity limit used by metricstore in GB\",\n \"type\": \"integer\"\n },\n \"nats-subscriptions\": {\n \"description\": \"Array of various subscriptions. Allows to subscribe to different subjects and publishers.\",\n \"type\": \"array\",\n \"items\": {\n \"type\": \"object\",\n \"properties\": {\n \"subscribe-to\": {\n \"description\": \"Subject name\",\n \"type\": \"string\"\n },\n \"cluster-tag\": {\n \"description\": \"Optional: Allow lines without a cluster tag, use this as default\",\n \"type\": \"string\"\n }\n },\n\t\t\t\t\"required\": [\"subscribe-to\"]\n }\n }\n },\n \"required\": [\"checkpoints\", \"retention-in-memory\", \"memory-cap\"]\n}`\n","structuredPatch":[{"oldStart":77,"oldLines":5,"newStart":77,"newLines":5,"lines":[" }"," }"," },","- \"required\": [\"checkpoints\", \"retention-in-memory\", \"memory-cap\"]","+ \"required\": [\"retention-in-memory\", \"memory-cap\"]"," }`"]}],"userModified":false,"replaceAll":false},"sourceToolAssistantUUID":"0da76be9-046f-45ff-92de-94d42b51e2d4"} +{"parentUuid":"91383289-e1f9-4e72-ba0e-474b93d3dd0e","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","message":{"model":"claude-sonnet-4-6","id":"msg_01LT9xoaUX9MT2JkcAhNtkYd","type":"message","role":"assistant","content":[{"type":"text","text":"Done. `checkpoints` is now optional in the schema — omitting it entirely will use the defaults (`\"wal\"` format and `./var/checkpoints` directory)."}],"stop_reason":"end_turn","stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":217,"cache_read_input_tokens":55343,"output_tokens":41,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":217,"ephemeral_5m_input_tokens":0},"inference_geo":"","iterations":[],"speed":"standard"}},"requestId":"req_011CYhp4B3HZ31ZFQTFr1KPo","type":"assistant","uuid":"e1e0db73-8100-439e-89eb-93f70e1de387","timestamp":"2026-03-04T09:35:05.430Z"} +{"parentUuid":"e1e0db73-8100-439e-89eb-93f70e1de387","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","type":"progress","data":{"type":"hook_progress","hookEvent":"Stop","hookName":"Stop","command":"entire hooks claude-code stop"},"parentToolUseID":"9358c47a-3f47-4f94-9dc9-4db3cae78dbd","toolUseID":"9358c47a-3f47-4f94-9dc9-4db3cae78dbd","timestamp":"2026-03-04T09:35:05.457Z","uuid":"ee7509d7-cf6d-4d1a-b13f-86c30fca0f6a"} +{"parentUuid":"ee7509d7-cf6d-4d1a-b13f-86c30fca0f6a","isSidechain":false,"userType":"external","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb","version":"2.1.66","gitBranch":"dev","slug":"misty-rolling-riddle","type":"system","subtype":"stop_hook_summary","hookCount":1,"hookInfos":[{"command":"entire hooks claude-code stop","durationMs":529}],"hookErrors":[],"preventedContinuation":false,"stopReason":"","hasOutput":false,"level":"suggestion","timestamp":"2026-03-04T09:35:05.986Z","uuid":"1784ed48-a463-4a2f-bea5-654e4447f87e","toolUseID":"9358c47a-3f47-4f94-9dc9-4db3cae78dbd"} diff --git a/2f/9a4e1c2e87/0/metadata.json b/2f/9a4e1c2e87/0/metadata.json new file mode 100644 index 00000000..1c7c2b8c --- /dev/null +++ b/2f/9a4e1c2e87/0/metadata.json @@ -0,0 +1,35 @@ +{ + "cli_version": "0.4.9", + "checkpoint_id": "2f9a4e1c2e87", + "session_id": "ceb68597-9f77-4ffe-9a4b-6c7c44e7f3bb", + "strategy": "manual-commit", + "created_at": "2026-03-04T09:38:10.095586Z", + "branch": "dev", + "checkpoints_count": 2, + "files_touched": [ + "configs/config-demo.json", + "configs/config.json", + "pkg/metricstore/archive.go", + "pkg/metricstore/checkpoint.go", + "pkg/metricstore/config.go", + "pkg/metricstore/configSchema.go" + ], + "agent": "Claude Code", + "turn_id": "19c289383e94", + "token_usage": { + "input_tokens": 27, + "cache_creation_tokens": 35422, + "cache_read_tokens": 1096892, + "output_tokens": 7323, + "api_call_count": 23 + }, + "initial_attribution": { + "calculated_at": "2026-03-04T09:38:09.982501Z", + "agent_lines": 27, + "human_added": 0, + "human_modified": 0, + "human_removed": 0, + "total_committed": 27, + "agent_percentage": 100 + } +} diff --git a/2f/9a4e1c2e87/0/prompt.txt b/2f/9a4e1c2e87/0/prompt.txt new file mode 100644 index 00000000..970388be --- /dev/null +++ b/2f/9a4e1c2e87/0/prompt.txt @@ -0,0 +1,109 @@ +Implement the following plan: + +# Plan: Simplify Checkpoint and Cleanup Configuration + +## Context + +The metricstore checkpoint interval is always "12h" in practice and has no reason to be configurable. The cleanup interval for the "delete" mode already falls back to `retention-in-memory` when not set — this should be the fixed behavior for all modes. WAL is the preferred and more robust checkpoint format and should be the default instead of JSON. + +These changes reduce unnecessary configuration surface, eliminate a required field from the schema, and make WAL the out-of-the-box format. + +--- + +## Changes + +### 1. `pkg/metricstore/config.go` + +- Remove `Interval string` field from `Checkpoints` struct (with its `json:"interval"` tag) +- Remove `Interval string` field from `Cleanup` struct (with its `json:"interval"` tag) +- Change default `FileFormat` from `"json"` to `"wal"` in the `Keys` var +- Update doc comments on both structs and the `Keys` hierarchy comment + +### 2. `pkg/metricstore/configSchema.go` + +- Remove `"interval"` property from the `checkpoints` object properties +- Remove `"interval"` from `"required": ["interval"]` in checkpoints (make required empty or remove it) +- Remove `"interval"` property from the `cleanup` object properties +- Remove `"interval"` from the conditional `"then": { "required": ["interval", "directory"] }` → only `"directory"` remains required for archive mode +- Update the `"file-format"` description to say default is `'wal'` + +### 3. `pkg/metricstore/checkpoint.go` + +Replace dynamic interval parsing with a hardcoded 12h constant: + +```go +// Before +d, err := time.ParseDuration(Keys.Checkpoints.Interval) +if err != nil { cclog.Fatalf(...) } +if d <= 0 { cclog.Warnf(...); return } + +// After +const checkpointInterval = 12 * time.Hour +d := checkpointInterval +``` + +Remove the `err` variable and validation block. The `ticker` and rest of the function stay unchanged. + +### 4. `pkg/metricstore/archive.go` + +Simplify `CleanUp()` to always use `Keys.RetentionInMemory` as the interval: + +```go +// Before +func CleanUp(wg *sync.WaitGroup, ctx context.Context) { + if Keys.Cleanup.Mode == "archive" { + cleanUpWorker(wg, ctx, Keys.Cleanup.Interval, "archiving", Keys.Cleanup.RootDir, false) + } else { + if Keys.Cleanup.Interval == "" { + Keys.Cleanup.Interval = Keys.RetentionInMemory + } + cleanUpWorker(wg, ctx, Keys.Cleanup.Interval, "deleting", "", true) + } +} + +// After +func CleanUp(wg *sync.WaitGroup, ctx context.Context) { + if Keys.Cleanup.Mode == "archive" { + cleanUpWorker(wg, ctx, Keys.RetentionInMemory, "archiving", Keys.Cleanup.RootDir, false) + } else { + cleanUpWorker(wg, ctx, Keys.RetentionInMemory, "deleting", "", true) + } +} +``` + +### 5. `configs/config.json` + +- Remove `"interval": "12h"` from `checkpoints` section +- Remove `"interval": "48h"` from `cleanup` section + +### 6. `configs/config-demo.json` + +- Remove `"interval": "12h"` from `checkpoints` section +- Remove `"file-format": "wal"` from `checkpoints` section (now the default, no need to specify) + +--- + +## Critical Files + +- `pkg/metricstore/config.go` — struct definitions and defaults +- `pkg/metricstore/configSchema.go` — JSON schema for validation +- `pkg/metricstore/checkpoint.go` — checkpoint worker (interval usage) +- `pkg/metricstore/archive.go` — cleanup worker (interval usage) +- `configs/config.json` — example production config +- `configs/config-demo.json` — demo config + +--- + +## Verification + +1. `go build ./...` — must compile without errors +2. `go test ./pkg/metricstore/...` — existing tests must pass +3. Verify JSON schema validation still accepts a config without `"interval"` in checkpoints/cleanup +4. Verify that a config with the old `"interval"` field is silently ignored (Go JSON unmarshal ignores unknown fields — but here the field is removed from the struct, so it will be ignored) + + +If 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/e7e4183c-0858-4bcb-8163-764db66ef417.jsonl + +--- + +Make the checkpoints option also option also optional \ No newline at end of file diff --git a/2f/9a4e1c2e87/metadata.json b/2f/9a4e1c2e87/metadata.json new file mode 100644 index 00000000..030f06b7 --- /dev/null +++ b/2f/9a4e1c2e87/metadata.json @@ -0,0 +1,31 @@ +{ + "cli_version": "0.4.9", + "checkpoint_id": "2f9a4e1c2e87", + "strategy": "manual-commit", + "branch": "dev", + "checkpoints_count": 2, + "files_touched": [ + "configs/config-demo.json", + "configs/config.json", + "pkg/metricstore/archive.go", + "pkg/metricstore/checkpoint.go", + "pkg/metricstore/config.go", + "pkg/metricstore/configSchema.go" + ], + "sessions": [ + { + "metadata": "/2f/9a4e1c2e87/0/metadata.json", + "transcript": "/2f/9a4e1c2e87/0/full.jsonl", + "context": "/2f/9a4e1c2e87/0/context.md", + "content_hash": "/2f/9a4e1c2e87/0/content_hash.txt", + "prompt": "/2f/9a4e1c2e87/0/prompt.txt" + } + ], + "token_usage": { + "input_tokens": 27, + "cache_creation_tokens": 35422, + "cache_read_tokens": 1096892, + "output_tokens": 7323, + "api_call_count": 23 + } +}