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https://github.com/minio/mc.git
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0dd32c1b26
Implement profiling command to start & download profiling data of a standalone or all nodes of a cluster. ``` 1. Start CPU profiling $ mc admin profiling start --type "cpu" myminio/ 2. Download latest profiling data under save under profiling.zip $ mc admin profiling stop myminio/ ```
112 lines
2.9 KiB
Go
112 lines
2.9 KiB
Go
/*
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* Minio Client (C) 2018 Minio, Inc.
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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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package cmd
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import (
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"strings"
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"github.com/minio/cli"
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"github.com/minio/mc/pkg/console"
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"github.com/minio/mc/pkg/probe"
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"github.com/minio/minio/pkg/madmin"
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)
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var adminProfilingStartFlags = []cli.Flag{
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cli.StringFlag{
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Name: "type",
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Usage: "Profiler type, possible values are: `cpu`, `mem`, `block`, `mutex` and `trace`",
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Value: "mem",
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},
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}
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var adminProfilingStartCmd = cli.Command{
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Name: "start",
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Usage: "Start recording profiling data",
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Action: mainAdminProfilingStart,
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Before: setGlobalsFromContext,
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Flags: append(adminProfilingStartFlags, globalFlags...),
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HideHelpCommand: true,
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CustomHelpTemplate: `NAME:
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{{.HelpName}} - {{.Usage}}
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USAGE:
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{{.HelpName}} [FLAGS] TARGET
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FLAGS:
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{{range .VisibleFlags}}{{.}}
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{{end}}
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EXAMPLES:
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1. Start CPU profiling
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$ {{.HelpName}} --type cpu myminio/
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`,
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}
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func checkAdminProfilingStartSyntax(ctx *cli.Context) {
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// Check flags combinations
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if len(ctx.Args()) != 1 {
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cli.ShowCommandHelpAndExit(ctx, "start", 1) // last argument is exit code
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}
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profilerTypes := []madmin.ProfilerType{
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madmin.ProfilerCPU,
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madmin.ProfilerMEM,
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madmin.ProfilerBlock,
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madmin.ProfilerMutex,
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madmin.ProfilerTrace,
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}
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// Check if the provided profiler type is known and supported
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supportedProfiler := false
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profilerType := strings.ToLower(ctx.String("type"))
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for _, profiler := range profilerTypes {
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if profilerType == string(profiler) {
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supportedProfiler = true
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break
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}
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}
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if !supportedProfiler {
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fatalIf(errDummy(), "Profiler type unrecognized. Possible values are: %v.", profilerTypes)
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}
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}
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// mainAdminProfilingStart - the entry function of profiling command
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func mainAdminProfilingStart(ctx *cli.Context) error {
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// Check for command syntax
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checkAdminProfilingStartSyntax(ctx)
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// Get the alias parameter from cli
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args := ctx.Args()
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aliasedURL := args.Get(0)
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profilerType := ctx.String("type")
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// Create a new Minio Admin Client
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client, err := newAdminClient(aliasedURL)
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if err != nil {
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fatalIf(err.Trace(aliasedURL), "Cannot initialize admin client.")
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return nil
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}
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// Start profiling
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_, cmdErr := client.StartProfiling(madmin.ProfilerType(profilerType))
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fatalIf(probe.NewError(cmdErr), "Unable to start profiling.")
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console.Infoln("Profiling data successfully started.")
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return nil
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}
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