{"record":{"id":"b03ae3ed6ada5507","repo":"vxcontrol/pentagi","slug":"failed-to-put-terminal-log-stdin-w","errorCode":null,"errorMessage":"failed to put terminal log (stdin): %w","messagePattern":"failed to put terminal log \\(stdin\\): %w","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"backend/pkg/tools/terminal.go","lineNumber":220,"sourceCode":"\t}\n\n\tisRunning, err := t.dockerClient.IsContainerRunning(ctx, t.containerLID)\n\tif err != nil {\n\t\treturn \"\", fmt.Errorf(\"runtime verification failed: %w\", err)\n\t}\n\tif !isRunning {\n\t\treturn \"\", fmt.Errorf(\"container runtime is not operational\")\n\t}\n\n\tif cwd == \"\" {\n\t\tcwd = docker.WorkFolderPathInContainer\n\t}\n\n\t// Format command with working directory and ANSI styling\n\tstyledCommand := fmt.Sprintf(\"%s $ %s%s%s%s\", cwd, ansiColorInputCmd, command, ansiColorReset, ansiLineTerminator)\n\t_, err = t.tlp.PutMsg(ctx, database.TermlogTypeStdin, styledCommand, t.containerID, t.taskID, t.subtaskID)\n\tif err != nil {\n\t\treturn \"\", fmt.Errorf(\"failed to put terminal log (stdin): %w\", err)\n\t}\n\n\ttimeout = t.normalizeExecTimeout(timeout)\n\n\tcreateResp, err := t.dockerClient.ContainerExecCreate(ctx, containerName, client.ExecCreateOptions{\n\t\tCmd:          cmd,\n\t\tAttachStdout: true,\n\t\tAttachStderr: true,\n\t\tWorkingDir:   cwd,\n\t\tTTY:          true,\n\t})\n\tif err != nil {\n\t\treturn \"\", fmt.Errorf(\"failed to create exec process: %w\", err)\n\t}\n\n\tif detach {\n\t\tresultChan := make(chan execResult, 1)\n\t\tdetachedCtx := context.WithoutCancel(ctx)","sourceCodeStart":202,"sourceCodeEnd":238,"githubUrl":"https://github.com/vxcontrol/pentagi/blob/ea665308baaff015b226f308438a68d929d0f29b/backend/pkg/tools/terminal.go#L202-L238","documentation":"Before executing, ExecCommand logs the styled command line to the terminal log store via tlp.PutMsg with TermlogTypeStdin. If that persistence write fails, the command is not run and \"failed to put terminal log (stdin): %w\" wraps the storage error — logging is treated as mandatory so the audit trail is never lost.","triggerScenarios":"PutMsg failing due to PostgreSQL being down/unreachable, the termlog table missing or migrated incorrectly, context cancellation while writing, or connection-pool exhaustion under load.","commonSituations":"Database container stopped or migrating; connection pool saturated by concurrent flows; pgvector/Postgres version mismatch after upgrade; network blip between backend and DB.","solutions":["Inspect the wrapped cause for the underlying DB error","Verify PostgreSQL is up and reachable and migrations have run (goose)","Check DB connection-pool limits vs. concurrent flow count","Retry the command once the DB is healthy"],"exampleFix":"// before\nout, err := term.ExecCommand(ctx, cwd, cmd, false, timeout) // failed to put terminal log (stdin): dial tcp ... refused\n// after\nif err := db.Ping(ctx); err != nil {\n    return fmt.Errorf(\"termlog store unavailable: %w\", err) // fix DB before executing\n}\nout, err := term.ExecCommand(ctx, cwd, cmd, false, timeout)","handlingStrategy":"try-catch","validationCode":"if err := db.SqlDB().PingContext(ctx); err != nil {\n    return fmt.Errorf(\"termlog store unreachable: %w\", err)\n}","typeGuard":null,"tryCatchPattern":"out, err := term.ExecCommand(ctx, cwd, cmd, false, timeout)\nvar wrapped interface{ Unwrap() error }\nif errors.As(err, &wrapped) && strings.Contains(err.Error(), \"failed to put terminal log (stdin)\") {\n    logger.WithError(errors.Unwrap(err)).Error(\"termlog write failed; fix DB before retrying commands\")\n    return err // do not execute unlogged commands\n}","preventionTips":["Keep PostgreSQL healthy and monitored; it is a hard dependency for exec","Run migrations (goose) at deploy time, not lazily at first write","Size the DB connection pool for peak concurrent flows","Persist audit logs synchronously by design — never bypass termlog to 'fix' this error"],"tags":["database","postgresql","logging","persistence"],"backgroundTag":"database-write-failed","analyzedSha":"ea665308baaff015b226f308438a68d929d0f29b","analyzedAt":"2026-09-01T14:16:31.421Z","contentChangedAt":null,"schemaVersion":2},"datasetVersion":"2026-09-08T10:18:20.063Z"}