{"record":{"id":"a7dc9d68535526aa","repo":"kubernetes/kops","slug":"kubernetespath-writeto-not-supported","errorCode":null,"errorMessage":"KubernetesPath::WriteTo not supported","messagePattern":"KubernetesPath::WriteTo not supported","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"util/pkg/vfs/k8sfs.go","lineNumber":113,"sourceCode":"}\n\nfunc (p *KubernetesPath) CreateFile(ctx context.Context, data io.ReadSeeker, acl ACL) error {\n\treturn fmt.Errorf(\"KubernetesPath::CreateFile not supported\")\n}\n\n// ReadFile implements Path::ReadFile\nfunc (p *KubernetesPath) ReadFile(ctx context.Context) ([]byte, error) {\n\tvar b bytes.Buffer\n\t_, err := p.WriteTo(&b)\n\tif err != nil {\n\t\treturn nil, err\n\t}\n\treturn b.Bytes(), nil\n}\n\n// WriteTo implements io.WriterTo\nfunc (p *KubernetesPath) WriteTo(out io.Writer) (int64, error) {\n\treturn 0, fmt.Errorf(\"KubernetesPath::WriteTo not supported\")\n}\n\nfunc (p *KubernetesPath) ReadDir() ([]Path, error) {\n\treturn nil, fmt.Errorf(\"KubernetesPath::ReadDir not supported\")\n}\n\nfunc (p *KubernetesPath) ReadTree(ctx context.Context) ([]Path, error) {\n\treturn nil, fmt.Errorf(\"KubernetesPath::ReadTree not supported\")\n}\n\nfunc (p *KubernetesPath) Base() string {\n\treturn path.Base(p.key)\n}\n\nfunc (p *KubernetesPath) PreferredHash() (*hashing.Hash, error) {\n\treturn p.Hash(hashing.HashAlgorithmMD5)\n}\n","sourceCodeStart":95,"sourceCodeEnd":131,"githubUrl":"https://github.com/kubernetes/kops/blob/4c8573c808a73d578c5eadc86d410646ea0b0d73/util/pkg/vfs/k8sfs.go#L95-L131","documentation":"Hard guard: streaming a k8s:// path to a writer is not implemented, so KubernetesPath.WriteTo always returns this error. ReadFile calls WriteTo internally, so reading a KubernetesPath through the generic VFS read path also surfaces this error — content must be fetched via the Kubernetes API instead.","triggerScenarios":"Thrown at util/pkg/vfs/k8sfs.go:113 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":["Fetch the object (ConfigMap/Secret) with client-go and write the bytes yourself","Implement or use a Kubernetes-aware reader rather than the generic io.WriterTo path"],"exampleFix":null,"handlingStrategy":"fallback","validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"4c8573c808a73d578c5eadc86d410646ea0b0d73","analyzedAt":"2026-09-05T04:13:19.212Z","contentChangedAt":"2026-09-05T04:13:19.212Z","schemaVersion":2},"datasetVersion":"2026-09-12T07:17:12.445Z"}