{"record":{"id":"4ca9b7a381b89c51","repo":"JuliusBrussee/caveman","slug":"unknown-compression-codec-q","errorCode":null,"errorMessage":"unknown compression codec %q","messagePattern":"unknown compression codec %q","errorType":"validation","errorClass":null,"httpStatus":null,"severity":"error","filePath":"shared/platform/objectstore/compress.go","lineNumber":52,"sourceCode":"// Compress encodes data with the named codec. \"none\" returns data unchanged.\nfunc Compress(codec string, data []byte) ([]byte, error) {\n\tswitch codec {\n\tcase CompressionNone, \"\":\n\t\treturn data, nil\n\tcase CompressionGzip:\n\t\tvar buf bytes.Buffer\n\t\tzw := gzip.NewWriter(&buf)\n\t\tif _, err := zw.Write(data); err != nil {\n\t\t\treturn nil, fmt.Errorf(\"gzip: %w\", err)\n\t\t}\n\t\tif err := zw.Close(); err != nil {\n\t\t\treturn nil, fmt.Errorf(\"gzip close: %w\", err)\n\t\t}\n\t\treturn buf.Bytes(), nil\n\tcase CompressionZstd:\n\t\treturn zstdEnc.EncodeAll(data, nil), nil\n\tdefault:\n\t\treturn nil, fmt.Errorf(\"unknown compression codec %q\", codec)\n\t}\n}\n\n// Decompress reverses Compress with a defensive default expansion ceiling. An\n// unknown codec fails closed.\nfunc Decompress(codec string, data []byte) ([]byte, error) {\n\treturn DecompressLimit(codec, data, DefaultMaxDecompressedBytes)\n}\n\n// DecompressLimit reverses Compress while refusing to produce more than\n// maxBytes of plaintext. The limit is applied while decoding gzip and through\n// zstd's decoder memory bound, so highly-compressible hostile payloads cannot\n// first allocate their full expanded size and only then be rejected.\nfunc DecompressLimit(codec string, data []byte, maxBytes int64) ([]byte, error) {\n\tif maxBytes < 0 || maxBytes > DefaultMaxDecompressedBytes {\n\t\treturn nil, fmt.Errorf(\"invalid decompression limit %d\", maxBytes)\n\t}\n\tswitch codec {","sourceCodeStart":34,"sourceCodeEnd":70,"githubUrl":"https://github.com/JuliusBrussee/caveman/blob/27d5a3981a347890211bb1bf2439e5c821a63bc9/shared/platform/objectstore/compress.go#L34-L70","documentation":"Error \"unknown compression codec %q\" thrown in JuliusBrussee/caveman.","triggerScenarios":"Thrown at shared/platform/objectstore/compress.go:52 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":["Use a supported compression codec (gzip or zstd)."],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"27d5a3981a347890211bb1bf2439e5c821a63bc9","analyzedAt":"2026-08-15T09:26:11.751Z","schemaVersion":2},"datasetVersion":"2026-08-15T22:17:37.221Z"}