{"record":{"id":"9a953034ad6d7bd6","repo":"kubernetes/kops","slug":"error-encoding-version-spec-v","errorCode":null,"errorMessage":"error encoding version spec: %v","messagePattern":"error encoding version spec: (.+?)","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"info","filePath":"channels/pkg/channels/channel_version.go","lineNumber":109,"sourceCode":"\t\t\tcontinue\n\t\t}\n\n\t\tchannelVersion, err := ParseChannelVersion(v)\n\t\tif err != nil {\n\t\t\tklog.Warningf(\"failed to parse annotation %q=%q\", k, v)\n\t\t\tcontinue\n\t\t}\n\n\t\tname := strings.TrimPrefix(k, AnnotationPrefix)\n\t\taddons[name] = channelVersion\n\t}\n\treturn addons\n}\n\nfunc (c *ChannelVersion) Encode() (string, error) {\n\tdata, err := json.Marshal(c)\n\tif err != nil {\n\t\treturn \"\", fmt.Errorf(\"error encoding version spec: %v\", err)\n\t}\n\treturn string(data), nil\n}\n\nfunc (c *Channel) AnnotationName() string {\n\treturn AnnotationPrefix + c.Name\n}\n\nfunc (c *ChannelVersion) replaces(name string, existing *ChannelVersion) bool {\n\tklog.V(6).Infof(\"Checking existing config for %q: %v compared to new channel: %v\", name, existing, c)\n\n\tif c.Id != existing.Id {\n\t\tklog.V(4).Infof(\"cluster has different ids for %q (%q vs %q); will replace\", name, c.Id, existing.Id)\n\t\treturn true\n\t}\n\n\tif c.ManifestHash != existing.ManifestHash {\n\t\tklog.V(4).Infof(\"cluster has different ManifestHash for %q (%q vs %q); will replace\", name, c.ManifestHash, existing.ManifestHash)","sourceCodeStart":91,"sourceCodeEnd":127,"githubUrl":"https://github.com/kubernetes/kops/blob/4c8573c808a73d578c5eadc86d410646ea0b0d73/channels/pkg/channels/channel_version.go#L91-L127","documentation":"ChannelVersion.Encode marshals the ChannelVersion struct to JSON so SetInstalledVersion can store it as a namespace annotation, wrapping json.Marshal failures. With only *string/string/int fields, Marshal cannot realistically fail, making this defensive/unreachable.","triggerScenarios":"SetInstalledVersion -> version.Encode() where json.Marshal(c) fails. Given the plain-field ChannelVersion struct, only memory/allocator failures could produce this error.","commonSituations":"Not user-triggerable in practice; would indicate a corrupted runtime or binary rather than a configuration problem.","solutions":["Retry the operation.","Rebuild/reinstall the kops/channels binary.","If reproducible, capture the ChannelVersion value and file an upstream issue."],"exampleFix":null,"handlingStrategy":"fallback","validationCode":null,"typeGuard":null,"tryCatchPattern":"encoded, err := cv.Encode()\nif err != nil {\n\t// marshal of plain fields cannot fail; treat as internal error and retry\n\tretryWithBackoff(2, func() error { encoded, err = cv.Encode(); return err })\n}","preventionTips":["Use official kops builds.","Report reproducible occurrences upstream with the ChannelVersion contents."],"tags":["json","encoding","defensive","unreachable"],"backgroundTag":"version-encoding-failed","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"}