Function loadPriorManifestFile

pkg/cli/compile_compiler_setup.go:278–307

loadPriorManifestFile reads a JSON file containing pre-cached manifests and registers each entry with the compiler. The file must contain a JSON object mapping lock-file paths to serialised GHAWManifest objects, as written by writePriorManifestFile in the MCP server startup path.

(compiler *workflow.Compiler, filePath string)

// mapping lock-file paths to serialised GHAWManifest objects, as written by
// writePriorManifestFile in the MCP server startup path.
func loadPriorManifestFile(compiler *workflow.Compiler, filePath string) error {
	data, err := os.ReadFile(filePath)
	if err != nil {
		return fmt.Errorf("read prior manifest file: %w", err)
	}

	var raw map[string]*json.RawMessage
	if err := json.Unmarshal(data, &raw); err != nil {
		return fmt.Errorf("unmarshal prior manifest file: %w", err)
	}

	manifests := make(map[string]*workflow.GHAWManifest, len(raw))
	for lockFile, msg := range raw {
		if msg == nil {
			// nil entry means "treat as empty manifest" (new workflow with no prior lock file)
			manifests[lockFile] = nil
			continue
		}
		var m workflow.GHAWManifest
		if err := json.Unmarshal(*msg, &m); err != nil {
			compileCompilerSetupLog.Printf("Skipping malformed manifest for %s: %v", lockFile, err)
			continue
		}
		manifests[lockFile] = &m
	}

	compiler.SetPriorManifests(manifests)
	compileCompilerSetupLog.Printf("Loaded %d pre-cached manifest(s) from %s", len(manifests), filePath)
	return nil
}