microbench-ci: marker file utility function

This commit adds a utility function to generate the marker file name for a
given benchmark and status.

The marker file is used to indicate that a benchmark has changed. It is
created for each metric of a benchmark.

Epic: None
Release note: None

Author: herkolategan

pkg/cmd/microbench-ci/benchmark.go

@@ -55,6 +55,10 @@ func (b *Benchmark) sanitizedName() string {
 	return sanitizeRe.ReplaceAllString(strings.TrimPrefix(b.Name, "Benchmark"), "_")
 }
 
+func (b *Benchmark) markerName(status Status) string {
+	return b.sanitizedName() + "." + strings.ToUpper(status.String())
+}
+
 func (b *Benchmark) binaryName() string {
 	return b.sanitizedPackageName()
 }

pkg/cmd/microbench-ci/run.go

@@ -152,8 +152,7 @@ func (b *Benchmark) run() error {
 	// be written.
 	for _, metric := range b.Metrics {
 		if status[metric.Name] != NoChange {
-			marker := strings.ToUpper(status[metric.Name].String())
-			err := os.WriteFile(path.Join(suite.artifactsDir(New), b.sanitizedName()+"."+marker), nil, 0644)
+			err := os.WriteFile(path.Join(suite.artifactsDir(New), b.markerName(status[metric.Name])), nil, 0644)
 			if err != nil {
 				return err
 			}