Function loadLocalExperimentConfigs

pkg/cli/experiments_command.go:304–350

loadLocalExperimentConfigs reads the workflow .md file for the given experiment name and returns the ExperimentConfig map from its frontmatter. experimentName is the sanitized workflow ID (the part after "experiments/" in the branch name). Returns nil when the workflow file cannot be found or parsed

(experimentName string)

// experimentName is the sanitized workflow ID (the part after "experiments/" in the branch name).
// Returns nil when the workflow file cannot be found or parsed.
func loadLocalExperimentConfigs(experimentName string) map[string]*workflow.ExperimentConfig {
	experimentsLog.Printf("Loading local experiment configs for %s", experimentName)

	filePath := findWorkflowFileForExperiment(experimentName)
	if filePath == "" {
		experimentsLog.Printf("No workflow file found for experiment %s", experimentName)
		return nil
	}

	// Verify that the resolved path is within .github/workflows/ to prevent path traversal.
	// findWorkflowFileForExperiment returns paths from filepath.Glob with a relative base dir,
	// so convert both sides to absolute paths before the prefix check.
	absFilePath, err := filepath.Abs(filePath)
	if err != nil {
		experimentsLog.Printf("Failed to resolve absolute path for %s: %v", filePath, err)
		return nil
	}
	workflowsDir, err := filepath.Abs(getWorkflowsDir())
	if err != nil {
		experimentsLog.Printf("Failed to resolve workflows dir: %v", err)
		return nil
	}
	if !strings.HasPrefix(absFilePath, workflowsDir+string(filepath.Separator)) {
		experimentsLog.Printf("Refusing to read workflow file outside .github/workflows/: %s", absFilePath)
		return nil
	}

	content, err := os.ReadFile(absFilePath) // #nosec G304 — path confirmed within .github/workflows/
	if err != nil {
		experimentsLog.Printf("Failed to read workflow file %s: %v", absFilePath, err)
		return nil
	}

	result, err := parser.ExtractFrontmatterFromContent(string(content))
	if err != nil {
		experimentsLog.Printf("Failed to parse frontmatter from %s: %v", filePath, err)
		return nil
	}

	cfg, err := workflow.ParseFrontmatterConfig(result.Frontmatter)
	if err != nil {
		experimentsLog.Printf("Failed to parse frontmatter config from %s: %v", filePath, err)
		return nil
	}

	return cfg.ExperimentConfigs
}

// loadRemoteExperimentConfigs fetches the workflow .md file from the repository default branch
// via the GitHub API and returns the ExperimentConfig map from its frontmatter.