mirror of https://github.com/grpc/grpc-go.git
78 lines
2.7 KiB
Go
78 lines
2.7 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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"flag"
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"fmt"
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)
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var flagAddress = flag.String("address", "", "address of a remote gRPC server with profiling turned on to retrieve stats from")
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var flagTimeout = flag.Int("timeout", 0, "network operations timeout in seconds to remote target (0 indicates unlimited)")
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var flagRetrieveSnapshot = flag.Bool("retrieve-snapshot", false, "connect to remote target and retrieve a profiling snapshot locally for processing")
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var flagSnapshot = flag.String("snapshot", "", "snapshot file to write to when retrieving profiling data or snapshot file to read from when processing profiling data")
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var flagEnableProfiling = flag.Bool("enable-profiling", false, "enable profiling in remote target")
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var flagDisableProfiling = flag.Bool("disable-profiling", false, "disable profiling in remote target")
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var flagStreamStatsCatapultJSON = flag.String("stream-stats-catapult-json", "", "path to a file to write to after transforming a snapshot into catapult's JSON format")
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var flagStreamStatsFilter = flag.String("stream-stats-filter", "server,client", "comma-separated list of stat tags to filter for")
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func exactlyOneOf(opts ...bool) bool {
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first := true
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for _, o := range opts {
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if !o {
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continue
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}
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if first {
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first = false
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} else {
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return false
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}
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}
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return !first
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}
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func parseArgs() error {
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flag.Parse()
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if *flagAddress != "" {
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if !exactlyOneOf(*flagEnableProfiling, *flagDisableProfiling, *flagRetrieveSnapshot) {
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return fmt.Errorf("when -address is specified, you must include exactly only one of -enable-profiling, -disable-profiling, and -retrieve-snapshot")
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}
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if *flagStreamStatsCatapultJSON != "" {
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return fmt.Errorf("when -address is specified, you must not include -stream-stats-catapult-json")
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}
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} else {
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if *flagEnableProfiling || *flagDisableProfiling || *flagRetrieveSnapshot {
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return fmt.Errorf("when -address isn't specified, you must not include any of -enable-profiling, -disable-profiling, and -retrieve-snapshot")
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}
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if *flagStreamStatsCatapultJSON == "" {
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return fmt.Errorf("when -address isn't specified, you must include -stream-stats-catapult-json")
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}
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}
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return nil
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}
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