func()

in v1storage/persistence.go [1093:1126]

• 30 lines of code
• 6 McCabe index (conditional complexity)

func (p *persistence) quarantineSeriesFile(fp model.Fingerprint, quarantineReason error, metric model.Metric) error {
	var (
		oldName     = p.fileNameForFingerprint(fp)
		orphanedDir = filepath.Join(p.basePath, "orphaned", filepath.Base(filepath.Dir(oldName)))
		newName     = filepath.Join(orphanedDir, filepath.Base(oldName))
		hintName    = newName[:len(newName)-len(seriesFileSuffix)] + hintFileSuffix
	)

	renameErr := os.MkdirAll(orphanedDir, 0700)
	if renameErr != nil {
		return renameErr
	}
	renameErr = os.Rename(oldName, newName)
	if os.IsNotExist(renameErr) {
		// Source file dosn't exist. That's normal.
		renameErr = nil
	}
	// Write hint file even if the rename ended in an error. At least try...
	// And ignore errors writing the hint file. It's best effort.
	if f, err := os.Create(hintName); err == nil {
		if metric != nil {
			f.WriteString(metric.String() + "\n")
		} else {
			f.WriteString("[UNKNOWN METRIC]\n")
		}
		if quarantineReason != nil {
			f.WriteString(quarantineReason.Error() + "\n")
		} else {
			f.WriteString("[UNKNOWN REASON]\n")
		}
		f.Close()
	}
	return renameErr
}