{"record":{"id":"88f111d5cd6ba795","repo":"grafana/k6","slug":"creating-a-local-file-q-w","errorCode":null,"errorMessage":"creating a local file %q: %w","messagePattern":"creating a local file %q: %w","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"internal/js/modules/k6/browser/storage/file_persister.go","lineNumber":34,"sourceCode":"\t\"time\"\n)\n\n// LocalFilePersister will persist files to the local disk.\ntype LocalFilePersister struct{}\n\n// Persist will write the contents of data to the local disk on the specified path.\n// TODO: we should not write to disk here but put it on some queue for async disk writes.\nfunc (l *LocalFilePersister) Persist(_ context.Context, path string, data io.Reader) (err error) {\n\tcp := filepath.Clean(path)\n\n\tdir := filepath.Dir(cp)\n\tif err = os.MkdirAll(dir, 0o755); err != nil { //nolint:forbidigo,gosec\n\t\treturn fmt.Errorf(\"creating a local directory %q: %w\", dir, err)\n\t}\n\n\tf, err := os.OpenFile(cp, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0o600) //nolint:forbidigo\n\tif err != nil {\n\t\treturn fmt.Errorf(\"creating a local file %q: %w\", cp, err)\n\t}\n\tdefer func() {\n\t\tif cerr := f.Close(); cerr != nil && err == nil {\n\t\t\terr = fmt.Errorf(\"closing the local file %q: %w\", cp, cerr)\n\t\t}\n\t}()\n\n\tbf := bufio.NewWriter(f)\n\n\tif _, err := io.Copy(bf, data); err != nil {\n\t\treturn fmt.Errorf(\"copying data to file: %w\", err)\n\t}\n\n\tif err := bf.Flush(); err != nil {\n\t\treturn fmt.Errorf(\"flushing data to disk: %w\", err)\n\t}\n\n\treturn nil","sourceCodeStart":16,"sourceCodeEnd":52,"githubUrl":"https://github.com/grafana/k6/blob/93accf6570dcd306ca5e99cc44c393ee3797761b/internal/js/modules/k6/browser/storage/file_persister.go#L16-L52","documentation":"Error \"creating a local file %q: %w\" thrown in grafana/k6.","triggerScenarios":"Thrown at internal/js/modules/k6/browser/storage/file_persister.go:34 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":[],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"93accf6570dcd306ca5e99cc44c393ee3797761b","analyzedAt":"2026-08-15T21:23:27.118Z","schemaVersion":2},"datasetVersion":"2026-08-15T22:17:37.221Z"}