{"record":{"id":"22a06fcf9cf1af4e","repo":"vxcontrol/pentagi","slug":"failed-to-put-terminal-log-read-file-cmd-w","errorCode":null,"errorMessage":"failed to put terminal log (read file cmd): %w","messagePattern":"failed to put terminal log \\(read file cmd\\): %w","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"backend/pkg/tools/terminal.go","lineNumber":341,"sourceCode":"\t\tresults = \"Command completed successfully with exit code 0. No output produced (silent success)\"\n\t}\n\n\treturn results, nil\n}\n\nfunc (t *terminal) ReadFile(ctx context.Context, flowID int64, path string) (string, error) {\n\tif path == \"\" {\n\t\treturn \"\", fmt.Errorf(\"path is required and cannot be empty\")\n\t}\n\n\tcwd := docker.WorkFolderPathInContainer\n\tescapedPath := strings.ReplaceAll(path, \"'\", \"'\\\"'\\\"'\")\n\tcatCommand := fmt.Sprintf(\"cat '%s'\", escapedPath)\n\t// Format read file command with styling\n\tstyledCommand := fmt.Sprintf(\"%s $ %s%s%s%s\", cwd, ansiColorInputCmd, catCommand, 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 (read file cmd): %w\", err)\n\t}\n\n\tcontent, err := t.readFileFromContainer(ctx, flowID, path)\n\tif err != nil {\n\t\treturn \"\", err\n\t}\n\n\t// Style file content output\n\tstyledContent := fmt.Sprintf(\"%s%s%s%s\", ansiColorSystemMsg, content, ansiColorReset, ansiLineTerminator)\n\t_, err = t.tlp.PutMsg(ctx, database.TermlogTypeStdout, styledContent, t.containerID, t.taskID, t.subtaskID)\n\tif err != nil {\n\t\treturn \"\", fmt.Errorf(\"failed to put terminal log (read file content): %w\", err)\n\t}\n\n\treturn content, nil\n}\n\n// readFileFromContainer copies path out of the flow's container and returns","sourceCodeStart":323,"sourceCodeEnd":359,"githubUrl":"https://github.com/vxcontrol/pentagi/blob/ea665308baaff015b226f308438a68d929d0f29b/backend/pkg/tools/terminal.go#L323-L359","documentation":"Before reading the file, ReadFile echoes the 'cat <path>' command into the terminal transcript via t.tlp.PutMsg with TermlogTypeStdin. This error wraps a failure of that logging write, meaning the read operation is aborted so the transcript stays consistent with executed commands.","triggerScenarios":"PutMsg(ctx, database.TermlogTypeStdin, styledCommand, ...) fails while recording the synthetic cat command — DB unavailable, connection pool exhausted, or the styled command payload is rejected by storage.","commonSituations":"PostgreSQL outage during agent activity; connection-pool saturation; constraint violations on the termlog table.","solutions":["Check database connectivity and pool health","Retry ReadFile once the DB recovers","Consider degrading gracefully: log the failure but proceed with the actual file read"],"exampleFix":"// before\nif _, err := t.tlp.PutMsg(ctx, database.TermlogTypeStdin, styledCommand, ...); err != nil {\n    return \"\", fmt.Errorf(\"failed to put terminal log (read file cmd): %w\", err)\n}\n// after\nif _, err := t.tlp.PutMsg(ctx, database.TermlogTypeStdin, styledCommand, ...); err != nil {\n    log.Warn(\"termlog stdin write failed\", \"err\", err) // proceed with read\n}","handlingStrategy":"fallback","validationCode":"if err := db.PingContext(ctx); err != nil {\n    return fmt.Errorf(\"skipping read: termlog store unavailable: %w\", err)\n}","typeGuard":null,"tryCatchPattern":"content, err := term.ReadFile(ctx, flowID, path)\nif err != nil && strings.Contains(err.Error(), \"failed to put terminal log (read file cmd)\") {\n    log.Warn(\"stdin termlog write failed; read aborted\", \"err\", err)\n    // retry later or degrade to direct container read\n}","preventionTips":["Keep the termlog DB healthy — every read echoes a transcript entry","Retry transient DB errors with backoff at the storage layer","Consider making transcript writes non-fatal for reads","Watch connection-pool metrics during parallel agent runs"],"tags":["database","logging","persistence","terminal"],"backgroundTag":"database-write-failed","analyzedSha":"ea665308baaff015b226f308438a68d929d0f29b","analyzedAt":"2026-09-01T14:16:31.421Z","contentChangedAt":null,"schemaVersion":2},"datasetVersion":"2026-09-08T10:18:20.063Z"}