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// Copyright 2021 Google Inc. All rights reserved.
//
// 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 shared
import (
"io/ioutil"
"os"
"google.golang.org/protobuf/proto"
)
// Save takes a protobuf message, marshals to an array of bytes
// and is then saved to a file.
func Save(pb proto.Message, filepath string) (err error) {
data, err := proto.Marshal(pb)
if err != nil {
return err
}
tempFilepath := filepath + ".tmp"
if err := ioutil.WriteFile(tempFilepath, []byte(data), 0644 /* rw-r--r-- */); err != nil {
return err
}
if err := os.Rename(tempFilepath, filepath); err != nil {
return err
}
return nil
}
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