{"record":{"id":"32ddf9ae6c8ed514","repo":"vxcontrol/pentagi","slug":"failed-to-put-terminal-log-edit-file-cmd-w","errorCode":null,"errorMessage":"failed to put terminal log (edit file cmd): %w","messagePattern":"failed to put terminal log \\(edit file cmd\\): %w","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"backend/pkg/tools/terminal.go","lineNumber":527,"sourceCode":"\n\tcurrent, err := t.readFileFromContainer(ctx, flowID, path)\n\tif err != nil {\n\t\treturn \"\", fmt.Errorf(\"failed to read current content of %s before editing: %w\", path, err)\n\t}\n\n\tnewContent, hunksApplied, err := ApplyUnifiedDiff(current, diffText)\n\tif err != nil {\n\t\treturn \"\", fmt.Errorf(\"failed to apply diff to %s: %w\", path, err)\n\t}\n\n\tif err := t.writeFileToContainer(ctx, flowID, path, newContent); err != nil {\n\t\treturn \"\", fmt.Errorf(\"failed to write edited content of %s: %w\", path, err)\n\t}\n\n\tsuccessMsg := fmt.Sprintf(\"Applied %d diff hunk(s) to %s (%d -> %d bytes)\", hunksApplied, path, len(current), len(newContent))\n\tstyledMsg := fmt.Sprintf(\"%s%s%s%s\", ansiColorSystemMsg, successMsg, ansiColorReset, ansiLineTerminator)\n\tif _, err := t.tlp.PutMsg(ctx, database.TermlogTypeStdin, styledMsg, t.containerID, t.taskID, t.subtaskID); err != nil {\n\t\treturn \"\", fmt.Errorf(\"failed to put terminal log (edit file cmd): %w\", err)\n\t}\n\n\treturn successMsg, nil\n}\n\n// PrimaryTerminalName returns the docker container name for a flow's primary\n// terminal, namespaced by the configured tenant.\n//\n//\t\"pentagi-terminal-1\"       (single instance)\n//\t\"acme-pentagi-terminal-1\"  (TENANT_ID=acme)\n//\n// The tenant goes in FRONT of the well-known prefix on purpose: the installer's\n// volume garbage collector force-removes anything matching\n// HasPrefix(\"pentagi-terminal-\") && HasSuffix(\"-data\"), so a leading tenant\n// segment keeps one tenant's objects outside another tenant's sweep. A tenant\n// segment placed after the prefix would stay inside it and be destroyed.\nfunc PrimaryTerminalName(tenantPrefix string, flowID int64) string {\n\treturn fmt.Sprintf(\"%s%s%d\", tenantPrefix, PrimaryTerminalNamePrefix, flowID)","sourceCodeStart":509,"sourceCodeEnd":545,"githubUrl":"https://github.com/vxcontrol/pentagi/blob/ea665308baaff015b226f308438a68d929d0f29b/backend/pkg/tools/terminal.go#L509-L545","documentation":"After a successful edit, EditFile logs a styled success line to the terminal log via t.tlp.PutMsg (termlog stdin entry). This error wraps that logging call failing — the edit itself succeeded and the file is already updated, but recording the action in the termlog store failed. It typically indicates a database/persistence problem in the terminal log pipeline rather than anything wrong with the file.","triggerScenarios":"PutMsg failing because the PostgreSQL termlog insert errored: DB down, connection pool exhausted, context canceled/deadline exceeded mid-insert, or a failed transaction.","commonSituations":"Database restart or network blip between backend and Postgres during a flow; context timeout from an upstream request canceled by the client while the write was already committed; pool saturation under heavy agent concurrency.","solutions":["Check backend logs and Postgres health (connection count, `SELECT 1`) for the underlying cause","Retry the EditFile action only if you must see the termlog entry — the file edit already took effect, so re-running will apply a diff against already-edited content; prefer verifying with ReadFile instead","Increase DB connection pool limits / fix connectivity if pool exhaustion is the cause","Consider degrading gracefully: treat termlog write failure as non-fatal so file edits are not reported as errors","Use a non-canceled context (the edit already succeeded, so an upstream cancellation shouldn't fail the whole call)"],"exampleFix":"// before\nif _, err := t.tlp.PutMsg(ctx, database.TermlogTypeStdin, styledMsg, t.containerID, t.taskID, t.subtaskID); err != nil {\n    return \"\", fmt.Errorf(\"failed to put terminal log (edit file cmd): %w\", err)\n}\n// after\nlogCtx, cancel := context.WithTimeout(context.WithoutCancel(ctx), 5*time.Second)\nif _, err := t.tlp.PutMsg(logCtx, database.TermlogTypeStdin, styledMsg, t.containerID, t.taskID, t.subtaskID); err != nil {\n    cancel()\n    t.logger.Warn().Err(err).Str(\"path\", path).Msg(\"edit succeeded but termlog write failed\")\n    return successMsg, nil // file edit already applied; don't fail the tool call\n}\ncancel()","handlingStrategy":"try-catch","validationCode":null,"typeGuard":null,"tryCatchPattern":"msg, err := term.EditFile(ctx, flowID, path, diff)\nif err != nil && strings.Contains(err.Error(), \"failed to put terminal log\") {\n    // The file edit already succeeded; verify with ReadFile instead of retrying the edit.\n    current, rerr := term.ReadFile(ctx, flowID, \"\", path)\n    _ = current; _ = rerr\n}","preventionTips":["Remember the edit is already applied — never blindly re-run the same diff after this error","Monitor Postgres connectivity and pool saturation for the termlog store","Use non-cancelable contexts for post-action logging writes","Treat termlog failures as observability degradation, not data loss of the file edit"],"tags":["termlog","database","logging","edit-file"],"backgroundTag":"database-write-failed","analyzedSha":"ea665308baaff015b226f308438a68d929d0f29b","analyzedAt":"2026-09-01T14:16:31.421Z","contentChangedAt":null,"schemaVersion":2},"datasetVersion":"2026-09-08T10:18:20.063Z"}