{"record":{"id":"bb3781862ff1c035","repo":"vxcontrol/pentagi","slug":"failed-to-put-terminal-log-read-file-content-w","errorCode":null,"errorMessage":"failed to put terminal log (read file content): %w","messagePattern":"failed to put terminal log \\(read file content\\): %w","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"backend/pkg/tools/terminal.go","lineNumber":353,"sourceCode":"\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\n// its content. It performs no terminal-log writes, so callers that need the\n// content only as an intermediate step (e.g. EditFile, before reapplying a\n// diff and writing back) don't echo a spurious \"cat\" transcript entry.\nfunc (t *terminal) readFileFromContainer(ctx context.Context, flowID int64, path string) (string, error) {\n\tcontainerName := PrimaryTerminalName(t.tenantPrefix, flowID)\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\")","sourceCodeStart":335,"sourceCodeEnd":371,"githubUrl":"https://github.com/vxcontrol/pentagi/blob/ea665308baaff015b226f308438a68d929d0f29b/backend/pkg/tools/terminal.go#L335-L371","documentation":"After successfully reading the file contents via readFileFromContainer, ReadFile records the styled content into the terminal transcript with PutMsg (TermlogTypeStdout). This error wraps a failure of that final logging write; the file was read, but the transcript could not be updated, so the read is reported as failed to preserve log integrity.","triggerScenarios":"PutMsg(ctx, database.TermlogTypeStdout, styledContent, ...) fails when persisting the file content — DB connection failure, oversized payload (large file content), or encoding constraints in the termlog table.","commonSituations":"Reading very large files whose content exceeds storage limits; PostgreSQL outage or pool exhaustion; binary files producing invalid UTF-8 content.","solutions":["Check database connectivity and health first","Truncate or size-limit content before PutMsg for large files","Sanitize non-UTF8 content before logging","Retry after the DB recovers; the content itself was read successfully"],"exampleFix":"// before\n_, err = t.tlp.PutMsg(ctx, database.TermlogTypeStdout, styledContent, ...)\n// after\nstyledContent = truncateString(strings.ToValidUTF8(styledContent, \"?\"), 50000)\n_, err = t.tlp.PutMsg(ctx, database.TermlogTypeStdout, styledContent, ...)","handlingStrategy":"fallback","validationCode":"info, err := os.Stat(localPathOrKnownSize)\nif err == nil && info.Size() > maxLoggableBytes {\n    return errors.New(\"file too large to log; read via direct copy instead\")\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 content)\") {\n    // content was read; failure was persistence — retry or log-and-continue\n    log.Warn(\"stdout termlog write failed for file content\", \"err\", err)\n}","preventionTips":["Limit read sizes; truncate content before PutMsg","Sanitize non-UTF8 file content before logging","Monitor DB health and payload-size constraints on termlog","Retry transient persistence errors with backoff"],"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"}