func PartialLock()

in pkg/bundle/encryption.go [37:104]
46 lines of code
12 McCabe index (conditional complexity)

func PartialLock(ctx context.Context, b *bundlev1.Bundle, transformerMap map[string]value.Transformer, skipUnresolved bool) error {
	// Check bundle
	if b == nil {
		return fmt.Errorf("unable to process nil bundle")
	}
	if transformerMap == nil {
		return fmt.Errorf("unable to process nil transformer map")
	}

	// For each packages
	for _, p := range b.Packages {
		// Check annotation usage
		keyAlias, hasKeyAlias := p.Annotations[packageEncryptionAnnotation]
		if !hasKeyAlias {
			// Skip package processing
			continue
		}

		// Check key alias declaration
		transformer, hasTransformer := transformerMap[keyAlias]
		if !hasTransformer {
			if skipUnresolved {
				// Skip unresolved transformer alias.
				continue
			}
			return fmt.Errorf("package encryption annotation found, but no key alias for '%s' provided", keyAlias)
		}
		if types.IsNil(transformer) {
			return fmt.Errorf("key alias '%s' refers to a nil transformer", keyAlias)
		}

		// Convert secret as a map
		secrets := map[string]interface{}{}
		for _, s := range p.Secrets.Data {
			var out interface{}
			if err := secret.Unpack(s.Value, &out); err != nil {
				return fmt.Errorf("unable to load secret value, corrupted bundle: %w", err)
			}

			// Assign to secret map
			secrets[s.Key] = out
		}

		// Export secrets as JSON
		content, err := json.Marshal(secrets)
		if err != nil {
			return fmt.Errorf("unable to extract secret map as json")
		}

		// Apply transformer
		out, err := transformer.To(ctx, content)
		if err != nil {
			return fmt.Errorf("unable to apply secret transformer: %w", err)
		}

		// Cleanup
		memguard.WipeBytes(content)
		p.Secrets.Data = nil

		// Assign locked secret
		p.Secrets.Locked = &wrappers.BytesValue{
			Value: out,
		}
	}

	// No error
	return nil
}