mirror of https://github.com/grpc/grpc-go.git
69 lines
1.6 KiB
Go
69 lines
1.6 KiB
Go
/*
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*
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* Copyright 2019 gRPC authors.
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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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*
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*/
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package main
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import (
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"encoding/gob"
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"fmt"
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"os"
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)
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func loadSnapshot(snapshotFileName string) (*snapshot, error) {
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logger.Infof("opening snapshot file %s", snapshotFileName)
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snapshotFile, err := os.Open(snapshotFileName)
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if err != nil {
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logger.Errorf("cannot open %s: %v", snapshotFileName, err)
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return nil, err
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}
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defer snapshotFile.Close()
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logger.Infof("decoding snapshot file %s", snapshotFileName)
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s := &snapshot{}
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decoder := gob.NewDecoder(snapshotFile)
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if err = decoder.Decode(s); err != nil {
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logger.Errorf("cannot decode %s: %v", snapshotFileName, err)
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return nil, err
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}
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return s, nil
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}
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func localCommand() error {
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if *flagSnapshot == "" {
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return fmt.Errorf("-snapshot flag missing")
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}
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s, err := loadSnapshot(*flagSnapshot)
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if err != nil {
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return err
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}
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if *flagStreamStatsCatapultJSON == "" {
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return fmt.Errorf("snapshot file specified without an action to perform")
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}
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if *flagStreamStatsCatapultJSON != "" {
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if err = streamStatsCatapultJSON(s, *flagStreamStatsCatapultJSON); err != nil {
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return err
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}
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}
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return nil
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}
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