working commit

vendor/helm.sh/helm/v4/internal/plugin/config.go

@@ -0,0 +1,53 @@
+/*
+Copyright The Helm Authors.
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package plugin
+
+import (
+	"bytes"
+	"fmt"
+	"reflect"
+
+	"go.yaml.in/yaml/v3"
+)
+
+// Config represents a plugin type specific configuration
+// It is expected to type assert (cast) the Config to its expected underlying type (schema.ConfigCLIV1, schema.ConfigGetterV1, etc).
+type Config interface {
+	Validate() error
+}
+
+func unmarshalConfig(pluginType string, configData map[string]any) (Config, error) {
+	pluginTypeMeta, ok := pluginTypesIndex[pluginType]
+	if !ok {
+		return nil, fmt.Errorf("unknown plugin type %q", pluginType)
+	}
+
+	// TODO: Avoid (yaml) serialization/deserialization for type conversion here
+
+	data, err := yaml.Marshal(configData)
+	if err != nil {
+		return nil, fmt.Errorf("failed to marshel config data (plugin type %s): %w", pluginType, err)
+	}
+
+	config := reflect.New(pluginTypeMeta.configType)
+	d := yaml.NewDecoder(bytes.NewReader(data))
+	d.KnownFields(true)
+	if err := d.Decode(config.Interface()); err != nil {
+		return nil, err
+	}
+
+	return config.Interface().(Config), nil
+}