42 lines
1.1 KiB
Go
42 lines
1.1 KiB
Go
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// Copyright 2021 Google Inc. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package shared
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import (
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"io/ioutil"
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"os"
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"google.golang.org/protobuf/proto"
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)
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// Save takes a protobuf message, marshals to an array of bytes
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// and is then saved to a file.
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func Save(pb proto.Message, filepath string) (err error) {
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data, err := proto.Marshal(pb)
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if err != nil {
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return err
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}
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tempFilepath := filepath + ".tmp"
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if err := ioutil.WriteFile(tempFilepath, []byte(data), 0644 /* rw-r--r-- */); err != nil {
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return err
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}
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if err := os.Rename(tempFilepath, filepath); err != nil {
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return err
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}
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return nil
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}
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