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deep_copy.go
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/
deep_copy.go
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/*
Copyright 2017 The Kubernetes 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 util
import (
"encoding/json"
"fmt"
)
// DeepCopy makes a deep copy from src into dst.
func DeepCopy(dst interface{}, src interface{}) error {
if dst == nil {
return fmt.Errorf("dst cannot be nil")
}
if src == nil {
return fmt.Errorf("src cannot be nil")
}
bytes, err := json.Marshal(src)
if err != nil {
return fmt.Errorf("unable to marshal src: %s", err)
}
err = json.Unmarshal(bytes, dst)
if err != nil {
return fmt.Errorf("unable to unmarshal into dst: %s", err)
}
return nil
}