mirror of https://github.com/grpc/grpc-go.git
99 lines
2.6 KiB
Go
99 lines
2.6 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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"context"
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"encoding/gob"
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"fmt"
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"os"
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"time"
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"google.golang.org/grpc"
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"google.golang.org/grpc/credentials/insecure"
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ppb "google.golang.org/grpc/profiling/proto"
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)
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func setEnabled(ctx context.Context, c ppb.ProfilingClient, enabled bool) error {
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_, err := c.Enable(ctx, &ppb.EnableRequest{Enabled: enabled})
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if err != nil {
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logger.Infof("error calling Enable: %v\n", err)
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return err
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}
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logger.Infof("successfully set enabled = %v", enabled)
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return nil
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}
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func retrieveSnapshot(ctx context.Context, c ppb.ProfilingClient, f string) error {
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logger.Infof("getting stream stats")
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resp, err := c.GetStreamStats(ctx, &ppb.GetStreamStatsRequest{})
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if err != nil {
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logger.Errorf("error calling GetStreamStats: %v\n", err)
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return err
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}
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s := &snapshot{StreamStats: resp.StreamStats}
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logger.Infof("creating snapshot file %s", f)
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file, err := os.Create(f)
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if err != nil {
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logger.Errorf("cannot create %s: %v", f, err)
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return err
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}
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defer file.Close()
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logger.Infof("encoding data and writing to snapshot file %s", f)
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encoder := gob.NewEncoder(file)
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err = encoder.Encode(s)
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if err != nil {
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logger.Infof("error encoding: %v", err)
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return err
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}
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logger.Infof("successfully wrote profiling snapshot to %s", f)
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return nil
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}
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func remoteCommand() error {
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ctx := context.Background()
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if *flagTimeout > 0 {
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var cancel func()
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ctx, cancel = context.WithTimeout(context.Background(), time.Duration(*flagTimeout)*time.Second)
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defer cancel()
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}
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logger.Infof("dialing %s", *flagAddress)
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cc, err := grpc.Dial(*flagAddress, grpc.WithTransportCredentials(insecure.NewCredentials()))
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if err != nil {
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logger.Errorf("cannot dial %s: %v", *flagAddress, err)
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return err
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}
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defer cc.Close()
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c := ppb.NewProfilingClient(cc)
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if *flagEnableProfiling || *flagDisableProfiling {
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return setEnabled(ctx, c, *flagEnableProfiling)
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} else if *flagRetrieveSnapshot {
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return retrieveSnapshot(ctx, c, *flagSnapshot)
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} else {
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return fmt.Errorf("what should I do with the remote target?")
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}
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}
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