diff options
Diffstat (limited to 'pkg/test/dockerutil/profile.go')
-rw-r--r-- | pkg/test/dockerutil/profile.go | 147 |
1 files changed, 0 insertions, 147 deletions
diff --git a/pkg/test/dockerutil/profile.go b/pkg/test/dockerutil/profile.go deleted file mode 100644 index 55f9496cd..000000000 --- a/pkg/test/dockerutil/profile.go +++ /dev/null @@ -1,147 +0,0 @@ -// Copyright 2020 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -package dockerutil - -import ( - "context" - "fmt" - "io" - "os" - "os/exec" - "path/filepath" - "time" -) - -// Profile represents profile-like operations on a container, -// such as running perf or pprof. It is meant to be added to containers -// such that the container type calls the Profile during its lifecycle. -type Profile interface { - // OnCreate is called just after the container is created when the container - // has a valid ID (e.g. c.ID()). - OnCreate(c *Container) error - - // OnStart is called just after the container is started when the container - // has a valid Pid (e.g. c.SandboxPid()). - OnStart(c *Container) error - - // Restart restarts the Profile on request. - Restart(c *Container) error - - // OnCleanUp is called during the container's cleanup method. - // Cleanups should just log errors if they have them. - OnCleanUp(c *Container) error -} - -// Pprof is for running profiles with 'runsc debug'. Pprof workloads -// should be run as root and ONLY against runsc sandboxes. The runtime -// should have --profile set as an option in /etc/docker/daemon.json in -// order for profiling to work with Pprof. -type Pprof struct { - BasePath string // path to put profiles - BlockProfile bool - CPUProfile bool - HeapProfile bool - MutexProfile bool - Duration time.Duration // duration to run profiler e.g. '10s' or '1m'. - shouldRun bool - cmd *exec.Cmd - stdout io.ReadCloser - stderr io.ReadCloser -} - -// MakePprofFromFlags makes a Pprof profile from flags. -func MakePprofFromFlags(c *Container) *Pprof { - if !(*pprofBlock || *pprofCPU || *pprofHeap || *pprofMutex) { - return nil - } - return &Pprof{ - BasePath: filepath.Join(*pprofBaseDir, c.runtime, c.Name), - BlockProfile: *pprofBlock, - CPUProfile: *pprofCPU, - HeapProfile: *pprofHeap, - MutexProfile: *pprofMutex, - Duration: *duration, - } -} - -// OnCreate implements Profile.OnCreate. -func (p *Pprof) OnCreate(c *Container) error { - return os.MkdirAll(p.BasePath, 0755) -} - -// OnStart implements Profile.OnStart. -func (p *Pprof) OnStart(c *Container) error { - path, err := RuntimePath() - if err != nil { - return fmt.Errorf("failed to get runtime path: %v", err) - } - - // The root directory of this container's runtime. - root := fmt.Sprintf("--root=/var/run/docker/runtime-%s/moby", c.runtime) - // Format is `runsc --root=rootdir debug --profile-*=file --duration=* containerID`. - args := []string{root, "debug"} - args = append(args, p.makeProfileArgs(c)...) - args = append(args, c.ID()) - - // Best effort wait until container is running. - for now := time.Now(); time.Since(now) < 5*time.Second; { - if status, err := c.Status(context.Background()); err != nil { - return fmt.Errorf("failed to get status with: %v", err) - - } else if status.Running { - break - } - time.Sleep(500 * time.Millisecond) - } - p.cmd = exec.Command(path, args...) - if err := p.cmd.Start(); err != nil { - return fmt.Errorf("process failed: %v", err) - } - return nil -} - -// Restart implements Profile.Restart. -func (p *Pprof) Restart(c *Container) error { - p.OnCleanUp(c) - return p.OnStart(c) -} - -// OnCleanUp implements Profile.OnCleanup -func (p *Pprof) OnCleanUp(c *Container) error { - defer func() { p.cmd = nil }() - if p.cmd != nil && p.cmd.Process != nil && p.cmd.ProcessState != nil && !p.cmd.ProcessState.Exited() { - return p.cmd.Process.Kill() - } - return nil -} - -// makeProfileArgs turns Pprof fields into runsc debug flags. -func (p *Pprof) makeProfileArgs(c *Container) []string { - var ret []string - if p.BlockProfile { - ret = append(ret, fmt.Sprintf("--profile-block=%s", filepath.Join(p.BasePath, "block.pprof"))) - } - if p.CPUProfile { - ret = append(ret, fmt.Sprintf("--profile-cpu=%s", filepath.Join(p.BasePath, "cpu.pprof"))) - } - if p.HeapProfile { - ret = append(ret, fmt.Sprintf("--profile-heap=%s", filepath.Join(p.BasePath, "heap.pprof"))) - } - if p.MutexProfile { - ret = append(ret, fmt.Sprintf("--profile-mutex=%s", filepath.Join(p.BasePath, "mutex.pprof"))) - } - ret = append(ret, fmt.Sprintf("--duration=%s", p.Duration)) - return ret -} |