{"record":{"id":"e8bc159eeb8dd878","repo":"vxcontrol/pentagi","slug":"failed-to-create-flow-tool-call-log-w","errorCode":null,"errorMessage":"failed to create flow tool call log: %w","messagePattern":"failed to create flow tool call log: %w","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"backend/pkg/controller/flow.go","lineNumber":1194,"sourceCode":"\n\tslw, err := cnts.slc.NewFlowSearchLog(ctx, flowID, pub)\n\tif err != nil {\n\t\treturn nil, fmt.Errorf(\"failed to create flow search log: %w\", err)\n\t}\n\n\ttlw, err := cnts.tlc.NewFlowTermLog(ctx, flowID, pub)\n\tif err != nil {\n\t\treturn nil, fmt.Errorf(\"failed to create flow term log: %w\", err)\n\t}\n\n\tvslw, err := cnts.vslc.NewFlowVectorStoreLog(ctx, flowID, pub)\n\tif err != nil {\n\t\treturn nil, fmt.Errorf(\"failed to create flow vector store log: %w\", err)\n\t}\n\n\ttclw, err := cnts.tclc.NewFlowToolCallLog(ctx, flowID, pub)\n\tif err != nil {\n\t\treturn nil, fmt.Errorf(\"failed to create flow tool call log: %w\", err)\n\t}\n\n\tsw, err := cnts.sc.NewFlowScreenshot(ctx, flowID, pub)\n\tif err != nil {\n\t\treturn nil, fmt.Errorf(\"failed to create flow screenshot: %w\", err)\n\t}\n\n\treturn &flowProviderWorkers{\n\t\tmlw:  mlw,\n\t\talw:  alw,\n\t\tslw:  slw,\n\t\ttlw:  tlw,\n\t\tvslw: vslw,\n\t\ttclw: tclw,\n\t\tsw:   sw,\n\t}, nil\n}\n","sourceCodeStart":1176,"sourceCodeEnd":1212,"githubUrl":"https://github.com/vxcontrol/pentagi/blob/ea665308baaff015b226f308438a68d929d0f29b/backend/pkg/controller/flow.go#L1176-L1212","documentation":"Sixth step of newFlowProviderWorkers: the tool call log worker is created via cnts.tclc.NewFlowToolCallLog(ctx, flowID, pub). An error wrapped with this message aborts flow startup, because agent tool-call events could not be recorded persistently.","triggerScenarios":"NewFlowToolCallLog fails during flow startup — DB error creating the tool-call log for this flow, invalid/deleted flowID, or context cancelled during the sequential worker-creation chain.","commonSituations":"PostgreSQL connection pool exhausted during many simultaneous flow starts; tool_call_logs table missing due to skipped migration; ctx deadline already exceeded after earlier slow steps; concurrent flow deletion.","solutions":["Inspect the wrapped error and Postgres logs for the failing statement","Run pending migrations so the tool-call-log schema exists","Increase DB pool size or start flows with less concurrency","Retry flow creation once DB health is confirmed"],"exampleFix":"// before: one slow step eats the whole startup budget\n// (ctx shared, no deadline management)\ntclw, err := cnts.tclc.NewFlowToolCallLog(ctx, flowID, pub)\n// after: give worker creation its own deadline\nwctx, cancel := context.WithTimeout(context.WithoutCancel(ctx), 30*time.Second)\ndefer cancel()\ntclw, err = cnts.tclc.NewFlowToolCallLog(wctx, flowID, pub)\nif err != nil {\n    return nil, fmt.Errorf(\"failed to create flow tool call log (flow=%d): %w\", flowID, err)\n}","handlingStrategy":"retry","validationCode":"var exists int\nif err := db.QueryRowContext(ctx, `SELECT COUNT(1) FROM flows WHERE id=$1`, flowID).Scan(&exists); err != nil || exists == 0 {\n    return fmt.Errorf(\"flow %d gone; cannot create tool call log\", flowID)\n}","typeGuard":"func hasValidFlowID(flowID int64) bool { return flowID > 0 }","tryCatchPattern":"tclw, err := cnts.tclc.NewFlowToolCallLog(ctx, flowID, pub)\nif err != nil {\n    if isTransientDBError(err) { /* retry with exponential backoff */ }\n    return nil, fmt.Errorf(\"failed to create flow tool call log (flow=%d): %w\", flowID, err)\n}","preventionTips":["Raise the DB connection pool limit if many flows start simultaneously","Run migrations on every deploy","Inspect the wrapped cause before assuming the flow is unrecoverable","Use context.WithTimeout per step so earlier slow steps do not exhaust the budget"],"tags":["go","database","flow-startup","tool-calls"],"backgroundTag":"database-write-failed","analyzedSha":"ea665308baaff015b226f308438a68d929d0f29b","analyzedAt":"2026-09-01T14:16:31.421Z","contentChangedAt":null,"schemaVersion":2},"datasetVersion":"2026-09-08T10:18:20.063Z"}