mirror of
https://github.com/hanzoai/visor.git
synced 2026-09-24 17:04:14 +00:00
Alexander CuevaandgVisor bot
1a8cde909e
This change registers the profile command under the debug command group in the runsc CLI. This will be followed up with other profiling sub-command implementations. PiperOrigin-RevId: 974750514
100 lines
2.7 KiB
Go
100 lines
2.7 KiB
Go
// Copyright 2026 The gVisor 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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package profile
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import (
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"context"
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"os"
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"time"
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"github.com/google/subcommands"
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"gvisor.dev/gvisor/runsc/cmd/util"
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"gvisor.dev/gvisor/runsc/config"
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"gvisor.dev/gvisor/runsc/container"
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"gvisor.dev/gvisor/runsc/flag"
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)
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// cpu implements subcommands.Command for the "cpu" command.
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type cpu struct {
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duration time.Duration
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output string
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}
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// Name implements subcommands.Command.
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func (*cpu) Name() string {
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return "cpu"
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}
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// Synopsis implements subcommands.Command.
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func (*cpu) Synopsis() string {
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return "collects a CPU profile of a running sandbox"
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}
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// Usage implements subcommands.Command.
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func (*cpu) Usage() string {
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return "cpu [flags] <container id> - collects a CPU profile of the sandbox\n"
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}
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// SetFlags implements subcommands.Command.
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func (c *cpu) SetFlags(f *flag.FlagSet) {
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f.DurationVar(&c.duration, "duration", 30*time.Second, "amount of time to collect the CPU profile")
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f.StringVar(&c.output, "output", "", "path to write CPU profile output (default: stdout)")
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}
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// Execute implements subcommands.Command.
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func (c *cpu) Execute(_ context.Context, f *flag.FlagSet, args ...any) subcommands.ExitStatus {
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if f.NArg() != 1 {
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if f.Usage != nil {
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f.Usage()
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}
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return subcommands.ExitUsageError
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}
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id := f.Arg(0)
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conf := args[0].(*config.Config)
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opts := container.LoadOpts{
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SkipCheck: true,
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RootContainer: true,
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}
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cont, err := container.Load(conf.RootDir, container.FullID{ContainerID: id}, opts)
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if err != nil {
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util.Fatalf("loading sandbox: %v", err)
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}
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if !cont.IsSandboxRunning() {
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util.Fatalf("container sandbox is not running")
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}
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out := os.Stdout
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if c.output != "" {
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f, err := os.OpenFile(c.output, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, 0644)
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if err != nil {
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util.Fatalf("failed to open output file: %v", err)
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}
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defer f.Close()
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out = f
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}
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util.Infof("Collecting CPU profile for sandbox %q (%v)...", cont.Sandbox.ID, c.duration)
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if err := cont.Sandbox.CPUProfile(out, c.duration); err != nil {
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util.Fatalf("CPU profiling failed: %v", err)
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}
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if c.output != "" {
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util.Infof("CPU profile written to %s", c.output)
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}
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return subcommands.ExitSuccess
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}
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