Refactor environment CLI command (#1265)

pkg/generator/encoder/encoder.go

@@ -0,0 +1,62 @@
+/*
+Copyright 2019 The Fission 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 encoder
+
+import (
+	"encoding/json"
+	"github.com/ghodss/yaml"
+)
+
+type (
+	EncodeCodec string
+
+	Encoder interface {
+		Marshal(v interface{}) ([]byte, error)
+		Unmarshal(data []byte, v interface{}) error
+	}
+
+	JSONEncoder struct{}
+	YAMLEncoder struct{}
+)
+
+var _ Encoder = DefaultJSONEncoder()
+
+func DefaultJSONEncoder() Encoder {
+	return JSONEncoder{}
+}
+
+func (encoder JSONEncoder) Marshal(v interface{}) ([]byte, error) {
+	return json.Marshal(v)
+}
+
+func (encoder JSONEncoder) Unmarshal(data []byte, v interface{}) error {
+	return json.Unmarshal(data, v)
+}
+
+var _ Encoder = DefaultYAMLEncoder()
+
+func DefaultYAMLEncoder() Encoder {
+	return YAMLEncoder{}
+}
+
+func (encoder YAMLEncoder) Marshal(v interface{}) ([]byte, error) {
+	return yaml.Marshal(v)
+}
+
+func (encoder YAMLEncoder) Unmarshal(data []byte, v interface{}) error {
+	return yaml.Unmarshal(data, v)
+}