{"record":{"id":"87db836a41f4d197","repo":"kubernetes/kops","slug":"error-building-path-q-v","errorCode":null,"errorMessage":"error building path %q: %v","messagePattern":"error building path %q: (.+?)","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"pkg/assets/assetcopy/copyfile.go","lineNumber":124,"sourceCode":"\t// TODO in s3 can we do a copy file ... would need to test\n\n\tdata, err := vfsContext.ReadFile(source)\n\tif err != nil {\n\t\tif os.IsNotExist(err) {\n\t\t\treturn fmt.Errorf(\"file not found %q: %v\", source, err)\n\t\t}\n\n\t\treturn fmt.Errorf(\"error downloading file %q: %v\", source, err)\n\t}\n\n\tobjectStore, err := buildVFSPath(target)\n\tif err != nil {\n\t\treturn err\n\t}\n\n\tuploadVFS, err := vfsContext.BuildVfsPath(objectStore)\n\tif err != nil {\n\t\treturn fmt.Errorf(\"error building path %q: %v\", objectStore, err)\n\t}\n\n\tshaExtension, err := fileExtensionForSHA(sha)\n\tif err != nil {\n\t\treturn err\n\t}\n\n\tshaTarget := objectStore + shaExtension\n\tshaVFS, err := vfsContext.BuildVfsPath(shaTarget)\n\tif err != nil {\n\t\treturn fmt.Errorf(\"error building path %q: %v\", shaTarget, err)\n\t}\n\n\tshaHash, err := hashing.FromString(strings.TrimSpace(sha))\n\tif err != nil {\n\t\treturn fmt.Errorf(\"unable to parse sha: %q, %v\", sha, err)\n\t}\n","sourceCodeStart":106,"sourceCodeEnd":142,"githubUrl":"https://github.com/kubernetes/kops/blob/4c8573c808a73d578c5eadc86d410646ea0b0d73/pkg/assets/assetcopy/copyfile.go#L106-L142","documentation":"After downloading, transferFile converts the target URL to a VFS path and calls vfsContext.BuildVfsPath(objectStore); failure to construct a usable path object is wrapped as 'error building path <objectStore>: <reason>'. This means the VFS layer could not interpret or connect for the target location.","triggerScenarios":"The objectStore path (already normalized by buildVFSPath to s3://, gs://, azureblob://, file://, or memfs://) cannot be built — e.g. malformed bucket name, unknown VFS scheme, or an underlying storage-client initialization error.","commonSituations":"A file-repository URL that buildVFSPath passed through unchanged but that the VFS backend rejects (e.g. unsupported scheme or invalid bucket); misconfigured cloud credentials preventing the backend from being constructed.","solutions":["Check the objectStore path in the message for a valid scheme and bucket name.","Ensure the file-repository flag uses s3://, gs://, azureblob://, file://, or a recognized S3/GCS HTTPS URL.","Validate cloud client configuration/credentials needed to open the target path.","Re-run `kops get assets --copy` after correcting the repository URL."],"exampleFix":"// before\n--file-repository s3://Bucket_With_Underscores/path\n// after\n--file-repository s3://my-assets-bucket/path","handlingStrategy":"validation","validationCode":"// Validate the target repository URL form before invoking kops:\nvar re = regexp.MustCompile(`^(s3|gs|azureblob|file|memfs)://[a-z0-9][a-z0-9.-]{2,62}/`)\nif !re.MatchString(fileRepository) && !strings.Contains(fileRepository, \"://\") {\n    return fmt.Errorf(\"unsupported file repository: %s\", fileRepository)\n}","typeGuard":null,"tryCatchPattern":null,"preventionTips":["Use only supported schemes: s3://, gs://, azureblob://, file://, memfs:// or recognized S3/GCS HTTPS URLs","Respect cloud bucket naming rules (lowercase, no underscores for S3)","Test with `kops get assets --copy` on a small asset set first","Ensure cloud credentials allow constructing the storage client"],"tags":["go","vfs","path","asset-copy"],"backgroundTag":"vfs-path-build-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"}