func()

in server/server.go [305:348]

• 32 lines of code
• 7 McCabe index (conditional complexity)

func (s *CSIDriverProviderServer) writeFile(secret *provider.SecretValue, mode os.FileMode) (*v1alpha1.File, error) {

	// Don't write if the driver is supposed to do it.
	if s.driverWriteSecrets {

		return &v1alpha1.File{
			Path:     secret.Descriptor.GetFileName(),
			Mode:     int32(mode),
			Contents: secret.Value,
		}, nil

	}

	// Write to a tempfile first
	tmpFile, err := ioutil.TempFile(secret.Descriptor.GetMountDir(), secret.Descriptor.GetFileName())
	if err != nil {
		return nil, err
	}
	defer os.Remove(tmpFile.Name()) // Cleanup on fail
	defer tmpFile.Close()           // Don't leak file descriptors

	err = tmpFile.Chmod(mode) // Set correct permissions
	if err != nil {
		return nil, err
	}

	_, err = tmpFile.Write(secret.Value) // Write the secret
	if err != nil {
		return nil, err
	}

	err = tmpFile.Sync() // Make sure to flush to disk
	if err != nil {
		return nil, err
	}

	// Swap out the old secret for the new
	err = os.Rename(tmpFile.Name(), secret.Descriptor.GetMountPath())
	if err != nil {
		return nil, err
	}

	return nil, nil
}