{"record":{"id":"15ba4f2c21fa72e7","repo":"GoogleContainerTools/skaffold","slug":"transforming-skaffold-config-w","errorCode":null,"errorMessage":"transforming skaffold config: %w","messagePattern":"transforming skaffold config: %w","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"pkg/skaffold/schema/versions.go","lineNumber":419,"sourceCode":"\n\t\tif currentVersion.NE(targetVersion) {\n\t\t\tupgradeNeeded = true\n\t\t}\n\t\tif currentVersion.GT(targetVersion) {\n\t\t\treturn nil, fmt.Errorf(\"config version %q is more recent than target version %q: upgrade Skaffold\", cfg.GetVersion(), toVersion)\n\t\t}\n\t}\n\tif !upgradeNeeded {\n\t\treturn configs, nil\n\t}\n\tlog.Entry(context.TODO()).Debugf(\"config version out of date: upgrading to latest %q\", toVersion)\n\tvar err error\n\tvar upgraded []util.VersionedConfig\n\tfor _, cfg := range configs {\n\t\tfor cfg.GetVersion() != toVersion {\n\t\t\tcfg, err = cfg.Upgrade()\n\t\t\tif err != nil {\n\t\t\t\treturn nil, fmt.Errorf(\"transforming skaffold config: %w\", err)\n\t\t\t}\n\t\t}\n\t\tupgraded = append(upgraded, cfg)\n\t}\n\treturn upgraded, nil\n}\n","sourceCodeStart":401,"sourceCodeEnd":426,"githubUrl":"https://github.com/GoogleContainerTools/skaffold/blob/a1189de023efc32d4b8e11f395acc678aa555011/pkg/skaffold/schema/versions.go#L401-L426","documentation":"UpgradeTo performs stepwise upgrades by repeatedly calling cfg.Upgrade() until the config reaches the target version. If any single-step transformation fails (a bug in a versioned Upgrade implementation or an invalid intermediate config), the error is wrapped as 'transforming skaffold config: %w'.","triggerScenarios":"UpgradeTo(configs, toVersion) where cfg.Upgrade() returns an error on one of the intermediate steps of the chain currentVersion -> ... -> toVersion. This can also occur if the version chain never terminates because GetVersion() never equals toVersion and Upgrade() keeps returning an unchanged config with an error.","commonSituations":"Parsing an old skaffold.yaml whose fields cannot be mechanically migrated (deprecated/removed fields with no automatic equivalent) during `skaffold fix` or normal config load/upgrade; also triggered by a mismatch where Upgrade() returns a config whose version does not advance.","solutions":["Run `skaffold fix` to see which transformation step fails, then hand-migrate the reported fields in skaffold.yaml to the target schema.","Update the Skaffold binary — newer releases often fix broken upgrade steps for older configs.","Validate the skaffold.yaml against the source version schema to remove unsupported/renamed fields before upgrading.","If developing Skaffold itself, inspect the Upgrade() implementation for the failing intermediate version and fix or guard it."],"exampleFix":"// before: failing old field\nbuild:\n  artifacts:\n  - imageName: myapp\n\n// after (renamed by schema migration)\nbuild:\n  artifacts:\n  - image: myapp","handlingStrategy":"try-catch","validationCode":"// pre-validate config parses on its declared version\nif _, err := schema.ParseConfig(cfg.GetVersion(), yamlBytes, false); err != nil {\n\treturn fmt.Errorf(\"config invalid for %s, fix fields before upgrade: %w\", cfg.GetVersion(), err)\n}","typeGuard":null,"tryCatchPattern":"upgraded, err := schema.UpgradeTo(configs, latest.Version)\nif err != nil {\n\tvar stepErr error\n\tif errors.As(err, &stepErr) {}\n\tlog.Errorf(\"upgrade failed at a transformation step: %v — run `skaffold fix` and inspect the reported fields\", err)\n\treturn err\n}","preventionTips":["Run `skaffold fix` incrementally (one version hop at a time) instead of large jumps","Keep skaffold.yaml free of deprecated fields listed in release notes","Update the binary to the latest release where upgrade steps are bug-fixed","Diff skaffold.yaml after `skaffold fix` to review automated migrations"],"tags":["skaffold","config","migration","schema"],"backgroundTag":"schema-transform-failed","analyzedSha":"a1189de023efc32d4b8e11f395acc678aa555011","analyzedAt":"2026-09-05T12:09:27.064Z","contentChangedAt":"2026-09-05T12:09:27.064Z","schemaVersion":2},"datasetVersion":"2026-09-12T17:17:11.597Z"}