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-rw-r--r--pkg/test/dockerutil/BUILD42
-rw-r--r--pkg/test/dockerutil/README.md86
-rw-r--r--pkg/test/dockerutil/container.go541
-rw-r--r--pkg/test/dockerutil/dockerutil.go172
-rw-r--r--pkg/test/dockerutil/exec.go188
-rw-r--r--pkg/test/dockerutil/network.go113
-rw-r--r--pkg/test/dockerutil/profile.go144
-rw-r--r--pkg/test/dockerutil/profile_test.go125
8 files changed, 0 insertions, 1411 deletions
diff --git a/pkg/test/dockerutil/BUILD b/pkg/test/dockerutil/BUILD
deleted file mode 100644
index a5e84658a..000000000
--- a/pkg/test/dockerutil/BUILD
+++ /dev/null
@@ -1,42 +0,0 @@
-load("//tools:defs.bzl", "go_library", "go_test")
-
-package(licenses = ["notice"])
-
-go_library(
- name = "dockerutil",
- testonly = 1,
- srcs = [
- "container.go",
- "dockerutil.go",
- "exec.go",
- "network.go",
- "profile.go",
- ],
- visibility = ["//:sandbox"],
- deps = [
- "//pkg/test/testutil",
- "@com_github_docker_docker//api/types:go_default_library",
- "@com_github_docker_docker//api/types/container:go_default_library",
- "@com_github_docker_docker//api/types/mount:go_default_library",
- "@com_github_docker_docker//api/types/network:go_default_library",
- "@com_github_docker_docker//client:go_default_library",
- "@com_github_docker_docker//pkg/stdcopy:go_default_library",
- "@com_github_docker_go_connections//nat:go_default_library",
- ],
-)
-
-go_test(
- name = "profile_test",
- size = "large",
- srcs = [
- "profile_test.go",
- ],
- library = ":dockerutil",
- tags = [
- # Requires docker and runsc to be configured before test runs.
- # Also requires the test to be run as root.
- "manual",
- "local",
- ],
- visibility = ["//:sandbox"],
-)
diff --git a/pkg/test/dockerutil/README.md b/pkg/test/dockerutil/README.md
deleted file mode 100644
index 870292096..000000000
--- a/pkg/test/dockerutil/README.md
+++ /dev/null
@@ -1,86 +0,0 @@
-# dockerutil
-
-This package is for creating and controlling docker containers for testing
-runsc, gVisor's docker/kubernetes binary. A simple test may look like:
-
-```
- func TestSuperCool(t *testing.T) {
- ctx := context.Background()
- c := dockerutil.MakeContainer(ctx, t)
- got, err := c.Run(ctx, dockerutil.RunOpts{
- Image: "basic/alpine"
- }, "echo", "super cool")
- if err != nil {
- t.Fatalf("err was not nil: %v", err)
- }
- want := "super cool"
- if !strings.Contains(got, want){
- t.Fatalf("want: %s, got: %s", want, got)
- }
- }
-```
-
-For further examples, see many of our end to end tests elsewhere in the repo,
-such as those in //test/e2e or benchmarks at //test/benchmarks.
-
-dockerutil uses the "official" docker golang api, which is
-[very powerful](https://godoc.org/github.com/docker/docker/client). dockerutil
-is a thin wrapper around this API, allowing desired new use cases to be easily
-implemented.
-
-## Profiling
-
-dockerutil is capable of generating profiles. Currently, the only option is to
-use pprof profiles generated by `runsc debug`. The profiler will generate Block,
-CPU, Heap, Goroutine, and Mutex profiles. To generate profiles:
-
-* Install runsc with the `--profile` flag: `make configure RUNTIME=myrunsc
- ARGS="--profile"` Also add other flags with ARGS like `--platform=kvm` or
- `--vfs2`.
-* Restart docker: `sudo service docker restart`
-
-To run and generate CPU profiles run:
-
-```
-make sudo TARGETS=//path/to:target \
- ARGS="--runtime=myrunsc -test.v -test.bench=. --pprof-cpu" OPTIONS="-c opt"
-```
-
-Profiles would be at: `/tmp/profile/myrunsc/CONTAINERNAME/cpu.pprof`
-
-Container name in most tests and benchmarks in gVisor is usually the test name
-and some random characters like so:
-`BenchmarkABSL-CleanCache-JF2J2ZYF3U7SL47QAA727CSJI3C4ZAW2`
-
-Profiling requires root as runsc debug inspects running containers in /var/run
-among other things.
-
-### Writing for Profiling
-
-The below shows an example of using profiles with dockerutil.
-
-```
-func TestSuperCool(t *testing.T){
- ctx := context.Background()
- // profiled and using runtime from dockerutil.runtime flag
- profiled := MakeContainer()
-
- // not profiled and using runtime runc
- native := MakeNativeContainer()
-
- err := profiled.Spawn(ctx, RunOpts{
- Image: "some/image",
- }, "sleep", "100000")
- // profiling has begun here
- ...
- expensive setup that I don't want to profile.
- ...
- profiled.RestartProfiles()
- // profiled activity
-}
-```
-
-In the above example, `profiled` would be profiled and `native` would not. The
-call to `RestartProfiles()` restarts the clock on profiling. This is useful if
-the main activity being tested is done with `docker exec` or `container.Spawn()`
-followed by one or more `container.Exec()` calls.
diff --git a/pkg/test/dockerutil/container.go b/pkg/test/dockerutil/container.go
deleted file mode 100644
index 7bacb70d3..000000000
--- a/pkg/test/dockerutil/container.go
+++ /dev/null
@@ -1,541 +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 (
- "bytes"
- "context"
- "errors"
- "fmt"
- "io/ioutil"
- "net"
- "os"
- "path"
- "path/filepath"
- "regexp"
- "strconv"
- "strings"
- "time"
-
- "github.com/docker/docker/api/types"
- "github.com/docker/docker/api/types/container"
- "github.com/docker/docker/api/types/mount"
- "github.com/docker/docker/api/types/network"
- "github.com/docker/docker/client"
- "github.com/docker/docker/pkg/stdcopy"
- "github.com/docker/go-connections/nat"
- "gvisor.dev/gvisor/pkg/test/testutil"
-)
-
-// Container represents a Docker Container allowing
-// user to configure and control as one would with the 'docker'
-// client. Container is backed by the offical golang docker API.
-// See: https://pkg.go.dev/github.com/docker/docker.
-type Container struct {
- Name string
- runtime string
-
- logger testutil.Logger
- client *client.Client
- id string
- mounts []mount.Mount
- links []string
- copyErr error
- cleanups []func()
-
- // profile is the profiling hook associated with this container.
- profile *profile
-}
-
-// RunOpts are options for running a container.
-type RunOpts struct {
- // Image is the image relative to images/. This will be mangled
- // appropriately, to ensure that only first-party images are used.
- Image string
-
- // Memory is the memory limit in bytes.
- Memory int
-
- // Cpus in which to allow execution. ("0", "1", "0-2").
- CpusetCpus string
-
- // Ports are the ports to be allocated.
- Ports []int
-
- // WorkDir sets the working directory.
- WorkDir string
-
- // ReadOnly sets the read-only flag.
- ReadOnly bool
-
- // Env are additional environment variables.
- Env []string
-
- // User is the user to use.
- User string
-
- // Privileged enables privileged mode.
- Privileged bool
-
- // CapAdd are the extra set of capabilities to add.
- CapAdd []string
-
- // CapDrop are the extra set of capabilities to drop.
- CapDrop []string
-
- // Mounts is the list of directories/files to be mounted inside the container.
- Mounts []mount.Mount
-
- // Links is the list of containers to be connected to the container.
- Links []string
-}
-
-func makeContainer(ctx context.Context, logger testutil.Logger, runtime string) *Container {
- // Slashes are not allowed in container names.
- name := testutil.RandomID(logger.Name())
- name = strings.ReplaceAll(name, "/", "-")
- client, err := client.NewClientWithOpts(client.FromEnv)
- if err != nil {
- return nil
- }
- client.NegotiateAPIVersion(ctx)
- return &Container{
- logger: logger,
- Name: name,
- runtime: runtime,
- client: client,
- }
-}
-
-// MakeContainer constructs a suitable Container object.
-//
-// The runtime used is determined by the runtime flag.
-//
-// Containers will check flags for profiling requests.
-func MakeContainer(ctx context.Context, logger testutil.Logger) *Container {
- return makeContainer(ctx, logger, *runtime)
-}
-
-// MakeNativeContainer constructs a suitable Container object.
-//
-// The runtime used will be the system default.
-//
-// Native containers aren't profiled.
-func MakeNativeContainer(ctx context.Context, logger testutil.Logger) *Container {
- return makeContainer(ctx, logger, "" /*runtime*/)
-}
-
-// Spawn is analogous to 'docker run -d'.
-func (c *Container) Spawn(ctx context.Context, r RunOpts, args ...string) error {
- if err := c.create(ctx, r.Image, c.config(r, args), c.hostConfig(r), nil); err != nil {
- return err
- }
- return c.Start(ctx)
-}
-
-// SpawnProcess is analogous to 'docker run -it'. It returns a process
-// which represents the root process.
-func (c *Container) SpawnProcess(ctx context.Context, r RunOpts, args ...string) (Process, error) {
- config, hostconf, netconf := c.ConfigsFrom(r, args...)
- config.Tty = true
- config.OpenStdin = true
-
- if err := c.CreateFrom(ctx, r.Image, config, hostconf, netconf); err != nil {
- return Process{}, err
- }
-
- // Open a connection to the container for parsing logs and for TTY.
- stream, err := c.client.ContainerAttach(ctx, c.id,
- types.ContainerAttachOptions{
- Stream: true,
- Stdin: true,
- Stdout: true,
- Stderr: true,
- })
- if err != nil {
- return Process{}, fmt.Errorf("connect failed container id %s: %v", c.id, err)
- }
-
- c.cleanups = append(c.cleanups, func() { stream.Close() })
-
- if err := c.Start(ctx); err != nil {
- return Process{}, err
- }
-
- return Process{container: c, conn: stream}, nil
-}
-
-// Run is analogous to 'docker run'.
-func (c *Container) Run(ctx context.Context, r RunOpts, args ...string) (string, error) {
- if err := c.create(ctx, r.Image, c.config(r, args), c.hostConfig(r), nil); err != nil {
- return "", err
- }
-
- if err := c.Start(ctx); err != nil {
- return "", err
- }
-
- if err := c.Wait(ctx); err != nil {
- return "", err
- }
-
- return c.Logs(ctx)
-}
-
-// ConfigsFrom returns container configs from RunOpts and args. The caller should call 'CreateFrom'
-// and Start.
-func (c *Container) ConfigsFrom(r RunOpts, args ...string) (*container.Config, *container.HostConfig, *network.NetworkingConfig) {
- return c.config(r, args), c.hostConfig(r), &network.NetworkingConfig{}
-}
-
-// MakeLink formats a link to add to a RunOpts.
-func (c *Container) MakeLink(target string) string {
- return fmt.Sprintf("%s:%s", c.Name, target)
-}
-
-// CreateFrom creates a container from the given configs.
-func (c *Container) CreateFrom(ctx context.Context, profileImage string, conf *container.Config, hostconf *container.HostConfig, netconf *network.NetworkingConfig) error {
- return c.create(ctx, profileImage, conf, hostconf, netconf)
-}
-
-// Create is analogous to 'docker create'.
-func (c *Container) Create(ctx context.Context, r RunOpts, args ...string) error {
- return c.create(ctx, r.Image, c.config(r, args), c.hostConfig(r), nil)
-}
-
-func (c *Container) create(ctx context.Context, profileImage string, conf *container.Config, hostconf *container.HostConfig, netconf *network.NetworkingConfig) error {
- if c.runtime != "" {
- // Use the image name as provided here; which normally represents the
- // unmodified "basic/alpine" image name. This should be easy to grok.
- c.profileInit(profileImage)
- }
- cont, err := c.client.ContainerCreate(ctx, conf, hostconf, nil, c.Name)
- if err != nil {
- return err
- }
- c.id = cont.ID
- return nil
-}
-
-func (c *Container) config(r RunOpts, args []string) *container.Config {
- ports := nat.PortSet{}
- for _, p := range r.Ports {
- port := nat.Port(fmt.Sprintf("%d", p))
- ports[port] = struct{}{}
- }
- env := append(r.Env, fmt.Sprintf("RUNSC_TEST_NAME=%s", c.Name))
-
- return &container.Config{
- Image: testutil.ImageByName(r.Image),
- Cmd: args,
- ExposedPorts: ports,
- Env: env,
- WorkingDir: r.WorkDir,
- User: r.User,
- }
-}
-
-func (c *Container) hostConfig(r RunOpts) *container.HostConfig {
- c.mounts = append(c.mounts, r.Mounts...)
-
- return &container.HostConfig{
- Runtime: c.runtime,
- Mounts: c.mounts,
- PublishAllPorts: true,
- Links: r.Links,
- CapAdd: r.CapAdd,
- CapDrop: r.CapDrop,
- Privileged: r.Privileged,
- ReadonlyRootfs: r.ReadOnly,
- Resources: container.Resources{
- Memory: int64(r.Memory), // In bytes.
- CpusetCpus: r.CpusetCpus,
- },
- }
-}
-
-// Start is analogous to 'docker start'.
-func (c *Container) Start(ctx context.Context) error {
- if err := c.client.ContainerStart(ctx, c.id, types.ContainerStartOptions{}); err != nil {
- return fmt.Errorf("ContainerStart failed: %v", err)
- }
-
- if c.profile != nil {
- if err := c.profile.Start(c); err != nil {
- c.logger.Logf("profile.Start failed: %v", err)
- }
- }
-
- return nil
-}
-
-// Stop is analogous to 'docker stop'.
-func (c *Container) Stop(ctx context.Context) error {
- return c.client.ContainerStop(ctx, c.id, nil)
-}
-
-// Pause is analogous to'docker pause'.
-func (c *Container) Pause(ctx context.Context) error {
- return c.client.ContainerPause(ctx, c.id)
-}
-
-// Unpause is analogous to 'docker unpause'.
-func (c *Container) Unpause(ctx context.Context) error {
- return c.client.ContainerUnpause(ctx, c.id)
-}
-
-// Checkpoint is analogous to 'docker checkpoint'.
-func (c *Container) Checkpoint(ctx context.Context, name string) error {
- return c.client.CheckpointCreate(ctx, c.Name, types.CheckpointCreateOptions{CheckpointID: name, Exit: true})
-}
-
-// Restore is analogous to 'docker start --checkname [name]'.
-func (c *Container) Restore(ctx context.Context, name string) error {
- return c.client.ContainerStart(ctx, c.id, types.ContainerStartOptions{CheckpointID: name})
-}
-
-// Logs is analogous 'docker logs'.
-func (c *Container) Logs(ctx context.Context) (string, error) {
- var out bytes.Buffer
- err := c.logs(ctx, &out, &out)
- return out.String(), err
-}
-
-func (c *Container) logs(ctx context.Context, stdout, stderr *bytes.Buffer) error {
- opts := types.ContainerLogsOptions{ShowStdout: true, ShowStderr: true}
- writer, err := c.client.ContainerLogs(ctx, c.id, opts)
- if err != nil {
- return err
- }
- defer writer.Close()
- _, err = stdcopy.StdCopy(stdout, stderr, writer)
-
- return err
-}
-
-// ID returns the container id.
-func (c *Container) ID() string {
- return c.id
-}
-
-// SandboxPid returns the container's pid.
-func (c *Container) SandboxPid(ctx context.Context) (int, error) {
- resp, err := c.client.ContainerInspect(ctx, c.id)
- if err != nil {
- return -1, err
- }
- return resp.ContainerJSONBase.State.Pid, nil
-}
-
-// ErrNoIP indicates that no IP address is available.
-var ErrNoIP = errors.New("no IP available")
-
-// FindIP returns the IP address of the container.
-func (c *Container) FindIP(ctx context.Context, ipv6 bool) (net.IP, error) {
- resp, err := c.client.ContainerInspect(ctx, c.id)
- if err != nil {
- return nil, err
- }
-
- var ip net.IP
- if ipv6 {
- ip = net.ParseIP(resp.NetworkSettings.DefaultNetworkSettings.GlobalIPv6Address)
- } else {
- ip = net.ParseIP(resp.NetworkSettings.DefaultNetworkSettings.IPAddress)
- }
- if ip == nil {
- return net.IP{}, ErrNoIP
- }
- return ip, nil
-}
-
-// FindPort returns the host port that is mapped to 'sandboxPort'.
-func (c *Container) FindPort(ctx context.Context, sandboxPort int) (int, error) {
- desc, err := c.client.ContainerInspect(ctx, c.id)
- if err != nil {
- return -1, fmt.Errorf("error retrieving port: %v", err)
- }
-
- format := fmt.Sprintf("%d/tcp", sandboxPort)
- ports, ok := desc.NetworkSettings.Ports[nat.Port(format)]
- if !ok {
- return -1, fmt.Errorf("error retrieving port: %v", err)
-
- }
-
- port, err := strconv.Atoi(ports[0].HostPort)
- if err != nil {
- return -1, fmt.Errorf("error parsing port %q: %v", port, err)
- }
- return port, nil
-}
-
-// CopyFiles copies in and mounts the given files. They are always ReadOnly.
-func (c *Container) CopyFiles(opts *RunOpts, target string, sources ...string) {
- dir, err := ioutil.TempDir("", c.Name)
- if err != nil {
- c.copyErr = fmt.Errorf("ioutil.TempDir failed: %v", err)
- return
- }
- c.cleanups = append(c.cleanups, func() { os.RemoveAll(dir) })
- if err := os.Chmod(dir, 0755); err != nil {
- c.copyErr = fmt.Errorf("os.Chmod(%q, 0755) failed: %v", dir, err)
- return
- }
- for _, name := range sources {
- src := name
- if !filepath.IsAbs(src) {
- src, err = testutil.FindFile(name)
- if err != nil {
- c.copyErr = fmt.Errorf("testutil.FindFile(%q) failed: %w", name, err)
- return
- }
- }
- dst := path.Join(dir, path.Base(name))
- if err := testutil.Copy(src, dst); err != nil {
- c.copyErr = fmt.Errorf("testutil.Copy(%q, %q) failed: %v", src, dst, err)
- return
- }
- c.logger.Logf("copy: %s -> %s", src, dst)
- }
- opts.Mounts = append(opts.Mounts, mount.Mount{
- Type: mount.TypeBind,
- Source: dir,
- Target: target,
- ReadOnly: false,
- })
-}
-
-// Status inspects the container returns its status.
-func (c *Container) Status(ctx context.Context) (types.ContainerState, error) {
- resp, err := c.client.ContainerInspect(ctx, c.id)
- if err != nil {
- return types.ContainerState{}, err
- }
- return *resp.State, err
-}
-
-// Wait waits for the container to exit.
-func (c *Container) Wait(ctx context.Context) error {
- defer c.stopProfiling()
- statusChan, errChan := c.client.ContainerWait(ctx, c.id, container.WaitConditionNotRunning)
- select {
- case err := <-errChan:
- return err
- case <-statusChan:
- return nil
- }
-}
-
-// WaitTimeout waits for the container to exit with a timeout.
-func (c *Container) WaitTimeout(ctx context.Context, timeout time.Duration) error {
- ctx, cancel := context.WithTimeout(ctx, timeout)
- defer cancel()
- statusChan, errChan := c.client.ContainerWait(ctx, c.id, container.WaitConditionNotRunning)
- select {
- case <-ctx.Done():
- if ctx.Err() == context.DeadlineExceeded {
- return fmt.Errorf("container %s timed out after %v seconds", c.Name, timeout.Seconds())
- }
- return nil
- case err := <-errChan:
- return err
- case <-statusChan:
- return nil
- }
-}
-
-// WaitForOutput searches container logs for pattern and returns or timesout.
-func (c *Container) WaitForOutput(ctx context.Context, pattern string, timeout time.Duration) (string, error) {
- matches, err := c.WaitForOutputSubmatch(ctx, pattern, timeout)
- if err != nil {
- return "", err
- }
- if len(matches) == 0 {
- return "", fmt.Errorf("didn't find pattern %s logs", pattern)
- }
- return matches[0], nil
-}
-
-// WaitForOutputSubmatch searches container logs for the given
-// pattern or times out. It returns any regexp submatches as well.
-func (c *Container) WaitForOutputSubmatch(ctx context.Context, pattern string, timeout time.Duration) ([]string, error) {
- ctx, cancel := context.WithTimeout(ctx, timeout)
- defer cancel()
- re := regexp.MustCompile(pattern)
- for {
- logs, err := c.Logs(ctx)
- if err != nil {
- return nil, fmt.Errorf("failed to get logs: %v logs: %s", err, logs)
- }
- if matches := re.FindStringSubmatch(logs); matches != nil {
- return matches, nil
- }
- time.Sleep(50 * time.Millisecond)
- }
-}
-
-// stopProfiling stops profiling.
-func (c *Container) stopProfiling() {
- if c.profile != nil {
- if err := c.profile.Stop(c); err != nil {
- // This most likely means that the runtime for the container
- // was too short to connect and actually get a profile.
- c.logger.Logf("warning: profile.Stop failed: %v", err)
- }
- }
-}
-
-// Kill kills the container.
-func (c *Container) Kill(ctx context.Context) error {
- defer c.stopProfiling()
- return c.client.ContainerKill(ctx, c.id, "")
-}
-
-// Remove is analogous to 'docker rm'.
-func (c *Container) Remove(ctx context.Context) error {
- // Remove the image.
- remove := types.ContainerRemoveOptions{
- RemoveVolumes: c.mounts != nil,
- RemoveLinks: c.links != nil,
- Force: true,
- }
- return c.client.ContainerRemove(ctx, c.Name, remove)
-}
-
-// CleanUp kills and deletes the container (best effort).
-func (c *Container) CleanUp(ctx context.Context) {
- // Execute all cleanups. We execute cleanups here to close any
- // open connections to the container before closing. Open connections
- // can cause Kill and Remove to hang.
- for _, c := range c.cleanups {
- c()
- }
- c.cleanups = nil
-
- // Kill the container.
- if err := c.Kill(ctx); err != nil && !strings.Contains(err.Error(), "is not running") {
- // Just log; can't do anything here.
- c.logger.Logf("error killing container %q: %v", c.Name, err)
- }
-
- // Remove the image.
- if err := c.Remove(ctx); err != nil {
- c.logger.Logf("error removing container %q: %v", c.Name, err)
- }
-
- // Forget all mounts.
- c.mounts = nil
-}
diff --git a/pkg/test/dockerutil/dockerutil.go b/pkg/test/dockerutil/dockerutil.go
deleted file mode 100644
index a40005799..000000000
--- a/pkg/test/dockerutil/dockerutil.go
+++ /dev/null
@@ -1,172 +0,0 @@
-// Copyright 2018 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 is a collection of utility functions.
-package dockerutil
-
-import (
- "encoding/json"
- "flag"
- "fmt"
- "io"
- "io/ioutil"
- "log"
- "os/exec"
- "regexp"
- "strconv"
- "time"
-
- "gvisor.dev/gvisor/pkg/test/testutil"
-)
-
-var (
- // runtime is the runtime to use for tests. This will be applied to all
- // containers. Note that the default here ("runsc") corresponds to the
- // default used by the installations. This is important, because the
- // default installer for vm_tests (in tools/installers:head, invoked
- // via tools/vm:defs.bzl) will install with this name. So without
- // changing anything, tests should have a runsc runtime available to
- // them. Otherwise installers should update the existing runtime
- // instead of installing a new one.
- runtime = flag.String("runtime", "runsc", "specify which runtime to use")
-
- // config is the default Docker daemon configuration path.
- config = flag.String("config_path", "/etc/docker/daemon.json", "configuration file for reading paths")
-
- // The following flags are for the "pprof" profiler tool.
-
- // pprofBaseDir allows the user to change the directory to which profiles are
- // written. By default, profiles will appear under:
- // /tmp/profile/RUNTIME/CONTAINER_NAME/*.pprof.
- pprofBaseDir = flag.String("pprof-dir", "/tmp/profile", "base directory in: BASEDIR/RUNTIME/CONTINER_NAME/FILENAME (e.g. /tmp/profile/runtime/mycontainer/cpu.pprof)")
- pprofDuration = flag.Duration("pprof-duration", time.Hour, "profiling duration (automatically stopped at container exit)")
-
- // The below flags enable each type of profile. Multiple profiles can be
- // enabled for each run. The profile will be collected from the start.
- pprofBlock = flag.Bool("pprof-block", false, "enables block profiling with runsc debug")
- pprofCPU = flag.Bool("pprof-cpu", false, "enables CPU profiling with runsc debug")
- pprofHeap = flag.Bool("pprof-heap", false, "enables heap profiling with runsc debug")
- pprofMutex = flag.Bool("pprof-mutex", false, "enables mutex profiling with runsc debug")
-)
-
-// EnsureSupportedDockerVersion checks if correct docker is installed.
-//
-// This logs directly to stderr, as it is typically called from a Main wrapper.
-func EnsureSupportedDockerVersion() {
- cmd := exec.Command("docker", "version")
- out, err := cmd.CombinedOutput()
- if err != nil {
- log.Fatalf("error running %q: %v", "docker version", err)
- }
- re := regexp.MustCompile(`Version:\s+(\d+)\.(\d+)\.\d.*`)
- matches := re.FindStringSubmatch(string(out))
- if len(matches) != 3 {
- log.Fatalf("Invalid docker output: %s", out)
- }
- major, _ := strconv.Atoi(matches[1])
- minor, _ := strconv.Atoi(matches[2])
- if major < 17 || (major == 17 && minor < 9) {
- log.Fatalf("Docker version 17.09.0 or greater is required, found: %02d.%02d", major, minor)
- }
-}
-
-// RuntimePath returns the binary path for the current runtime.
-func RuntimePath() (string, error) {
- rs, err := runtimeMap()
- if err != nil {
- return "", err
- }
-
- p, ok := rs["path"].(string)
- if !ok {
- // The runtime does not declare a path.
- return "", fmt.Errorf("runtime does not declare a path: %v", rs)
- }
- return p, nil
-}
-
-// UsingVFS2 returns true if the 'runtime' has the vfs2 flag set.
-// TODO(gvisor.dev/issue/1624): Remove.
-func UsingVFS2() (bool, error) {
- rMap, err := runtimeMap()
- if err != nil {
- return false, err
- }
-
- list, ok := rMap["runtimeArgs"].([]interface{})
- if !ok {
- return false, fmt.Errorf("unexpected format: %v", rMap)
- }
-
- for _, element := range list {
- if element == "--vfs2" {
- return true, nil
- }
- }
- return false, nil
-}
-
-func runtimeMap() (map[string]interface{}, error) {
- // Read the configuration data; the file must exist.
- configBytes, err := ioutil.ReadFile(*config)
- if err != nil {
- return nil, err
- }
-
- // Unmarshal the configuration.
- c := make(map[string]interface{})
- if err := json.Unmarshal(configBytes, &c); err != nil {
- return nil, err
- }
-
- // Decode the expected configuration.
- r, ok := c["runtimes"]
- if !ok {
- return nil, fmt.Errorf("no runtimes declared: %v", c)
- }
- rs, ok := r.(map[string]interface{})
- if !ok {
- // The runtimes are not a map.
- return nil, fmt.Errorf("unexpected format: %v", rs)
- }
- r, ok = rs[*runtime]
- if !ok {
- // The expected runtime is not declared.
- return nil, fmt.Errorf("runtime %q not found: %v", *runtime, rs)
- }
- rs, ok = r.(map[string]interface{})
- if !ok {
- // The runtime is not a map.
- return nil, fmt.Errorf("unexpected format: %v", r)
- }
- return rs, nil
-}
-
-// Save exports a container image to the given Writer.
-//
-// Note that the writer should be actively consuming the output, otherwise it
-// is not guaranteed that the Save will make any progress and the call may
-// stall indefinitely.
-//
-// This is called by criutil in order to import imports.
-func Save(logger testutil.Logger, image string, w io.Writer) error {
- cmd := testutil.Command(logger, "docker", "save", testutil.ImageByName(image))
- cmd.Stdout = w // Send directly to the writer.
- return cmd.Run()
-}
-
-// Runtime returns the value of the flag runtime.
-func Runtime() string {
- return *runtime
-}
diff --git a/pkg/test/dockerutil/exec.go b/pkg/test/dockerutil/exec.go
deleted file mode 100644
index bf968acec..000000000
--- a/pkg/test/dockerutil/exec.go
+++ /dev/null
@@ -1,188 +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 (
- "bytes"
- "context"
- "fmt"
- "time"
-
- "github.com/docker/docker/api/types"
- "github.com/docker/docker/pkg/stdcopy"
-)
-
-// ExecOpts holds arguments for Exec calls.
-type ExecOpts struct {
- // Env are additional environment variables.
- Env []string
-
- // Privileged enables privileged mode.
- Privileged bool
-
- // User is the user to use.
- User string
-
- // Enables Tty and stdin for the created process.
- UseTTY bool
-
- // WorkDir is the working directory of the process.
- WorkDir string
-}
-
-// Exec creates a process inside the container.
-func (c *Container) Exec(ctx context.Context, opts ExecOpts, args ...string) (string, error) {
- p, err := c.doExec(ctx, opts, args)
- if err != nil {
- return "", err
- }
-
- if exitStatus, err := p.WaitExitStatus(ctx); err != nil {
- return "", err
- } else if exitStatus != 0 {
- out, _ := p.Logs()
- return out, fmt.Errorf("process terminated with status: %d", exitStatus)
- }
-
- return p.Logs()
-}
-
-// ExecProcess creates a process inside the container and returns a process struct
-// for the caller to use.
-func (c *Container) ExecProcess(ctx context.Context, opts ExecOpts, args ...string) (Process, error) {
- return c.doExec(ctx, opts, args)
-}
-
-func (c *Container) doExec(ctx context.Context, r ExecOpts, args []string) (Process, error) {
- config := c.execConfig(r, args)
- resp, err := c.client.ContainerExecCreate(ctx, c.id, config)
- if err != nil {
- return Process{}, fmt.Errorf("exec create failed with err: %v", err)
- }
-
- hijack, err := c.client.ContainerExecAttach(ctx, resp.ID, types.ExecStartCheck{})
- if err != nil {
- return Process{}, fmt.Errorf("exec attach failed with err: %v", err)
- }
-
- return Process{
- container: c,
- execid: resp.ID,
- conn: hijack,
- }, nil
-}
-
-func (c *Container) execConfig(r ExecOpts, cmd []string) types.ExecConfig {
- env := append(r.Env, fmt.Sprintf("RUNSC_TEST_NAME=%s", c.Name))
- return types.ExecConfig{
- AttachStdin: r.UseTTY,
- AttachStderr: true,
- AttachStdout: true,
- Cmd: cmd,
- Privileged: r.Privileged,
- WorkingDir: r.WorkDir,
- Env: env,
- Tty: r.UseTTY,
- User: r.User,
- }
-
-}
-
-// Process represents a containerized process.
-type Process struct {
- container *Container
- execid string
- conn types.HijackedResponse
-}
-
-// Write writes buf to the process's stdin.
-func (p *Process) Write(timeout time.Duration, buf []byte) (int, error) {
- p.conn.Conn.SetDeadline(time.Now().Add(timeout))
- return p.conn.Conn.Write(buf)
-}
-
-// Read returns process's stdout and stderr.
-func (p *Process) Read() (string, string, error) {
- var stdout, stderr bytes.Buffer
- if err := p.read(&stdout, &stderr); err != nil {
- return "", "", err
- }
- return stdout.String(), stderr.String(), nil
-}
-
-// Logs returns combined stdout/stderr from the process.
-func (p *Process) Logs() (string, error) {
- var out bytes.Buffer
- if err := p.read(&out, &out); err != nil {
- return "", err
- }
- return out.String(), nil
-}
-
-func (p *Process) read(stdout, stderr *bytes.Buffer) error {
- _, err := stdcopy.StdCopy(stdout, stderr, p.conn.Reader)
- return err
-}
-
-// ExitCode returns the process's exit code.
-func (p *Process) ExitCode(ctx context.Context) (int, error) {
- _, exitCode, err := p.runningExitCode(ctx)
- return exitCode, err
-}
-
-// IsRunning checks if the process is running.
-func (p *Process) IsRunning(ctx context.Context) (bool, error) {
- running, _, err := p.runningExitCode(ctx)
- return running, err
-}
-
-// WaitExitStatus until process completes and returns exit status.
-func (p *Process) WaitExitStatus(ctx context.Context) (int, error) {
- waitChan := make(chan (int))
- errChan := make(chan (error))
-
- go func() {
- for {
- running, exitcode, err := p.runningExitCode(ctx)
- if err != nil {
- errChan <- fmt.Errorf("error waiting process %s: container %v", p.execid, p.container.Name)
- }
- if !running {
- waitChan <- exitcode
- }
- time.Sleep(time.Millisecond * 500)
- }
- }()
-
- select {
- case ws := <-waitChan:
- return ws, nil
- case err := <-errChan:
- return -1, err
- }
-}
-
-// runningExitCode collects if the process is running and the exit code.
-// The exit code is only valid if the process has exited.
-func (p *Process) runningExitCode(ctx context.Context) (bool, int, error) {
- // If execid is not empty, this is a execed process.
- if p.execid != "" {
- status, err := p.container.client.ContainerExecInspect(ctx, p.execid)
- return status.Running, status.ExitCode, err
- }
- // else this is the root process.
- status, err := p.container.Status(ctx)
- return status.Running, status.ExitCode, err
-}
diff --git a/pkg/test/dockerutil/network.go b/pkg/test/dockerutil/network.go
deleted file mode 100644
index 047091e75..000000000
--- a/pkg/test/dockerutil/network.go
+++ /dev/null
@@ -1,113 +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"
- "net"
-
- "github.com/docker/docker/api/types"
- "github.com/docker/docker/api/types/network"
- "github.com/docker/docker/client"
- "gvisor.dev/gvisor/pkg/test/testutil"
-)
-
-// Network is a docker network.
-type Network struct {
- client *client.Client
- id string
- logger testutil.Logger
- Name string
- containers []*Container
- Subnet *net.IPNet
-}
-
-// NewNetwork sets up the struct for a Docker network. Names of networks
-// will be unique.
-func NewNetwork(ctx context.Context, logger testutil.Logger) *Network {
- client, err := client.NewClientWithOpts(client.FromEnv)
- if err != nil {
- logger.Logf("create client failed with: %v", err)
- return nil
- }
- client.NegotiateAPIVersion(ctx)
-
- return &Network{
- logger: logger,
- Name: testutil.RandomID(logger.Name()),
- client: client,
- }
-}
-
-func (n *Network) networkCreate() types.NetworkCreate {
-
- var subnet string
- if n.Subnet != nil {
- subnet = n.Subnet.String()
- }
-
- ipam := network.IPAM{
- Config: []network.IPAMConfig{{
- Subnet: subnet,
- }},
- }
-
- return types.NetworkCreate{
- CheckDuplicate: true,
- IPAM: &ipam,
- }
-}
-
-// Create is analogous to 'docker network create'.
-func (n *Network) Create(ctx context.Context) error {
-
- opts := n.networkCreate()
- resp, err := n.client.NetworkCreate(ctx, n.Name, opts)
- if err != nil {
- return err
- }
- n.id = resp.ID
- return nil
-}
-
-// Connect is analogous to 'docker network connect' with the arguments provided.
-func (n *Network) Connect(ctx context.Context, container *Container, ipv4, ipv6 string) error {
- settings := network.EndpointSettings{
- IPAMConfig: &network.EndpointIPAMConfig{
- IPv4Address: ipv4,
- IPv6Address: ipv6,
- },
- }
- err := n.client.NetworkConnect(ctx, n.id, container.id, &settings)
- if err == nil {
- n.containers = append(n.containers, container)
- }
- return err
-}
-
-// Inspect returns this network's info.
-func (n *Network) Inspect(ctx context.Context) (types.NetworkResource, error) {
- return n.client.NetworkInspect(ctx, n.id, types.NetworkInspectOptions{Verbose: true})
-}
-
-// Cleanup cleans up the docker network and all the containers attached to it.
-func (n *Network) Cleanup(ctx context.Context) error {
- for _, c := range n.containers {
- c.CleanUp(ctx)
- }
- n.containers = nil
-
- return n.client.NetworkRemove(ctx, n.id)
-}
diff --git a/pkg/test/dockerutil/profile.go b/pkg/test/dockerutil/profile.go
deleted file mode 100644
index 5cad3e959..000000000
--- a/pkg/test/dockerutil/profile.go
+++ /dev/null
@@ -1,144 +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"
- "os"
- "os/exec"
- "path/filepath"
- "syscall"
- "time"
-)
-
-// profile represents profile-like operations on a container.
-//
-// It is meant to be added to containers such that the container type calls
-// the profile during its lifecycle. Standard implementations are below.
-
-// profile is for running profiles with 'runsc debug'.
-type profile struct {
- BasePath string
- Types []string
- Duration time.Duration
- cmd *exec.Cmd
-}
-
-// profileInit initializes a profile object, if required.
-//
-// N.B. The profiling filename initialized here will use the *image*
-// name, and not the unique container name. This is intentional. Most
-// of the time, profiling will be used for benchmarks. Benchmarks will
-// be run iteratively until a sufficiently large N is reached. It is
-// useful in this context to overwrite previous runs, and generate a
-// single profile result for the final test.
-func (c *Container) profileInit(image string) {
- if !*pprofBlock && !*pprofCPU && !*pprofMutex && !*pprofHeap {
- return // Nothing to do.
- }
- c.profile = &profile{
- BasePath: filepath.Join(*pprofBaseDir, c.runtime, c.logger.Name(), image),
- Duration: *pprofDuration,
- }
- if *pprofCPU {
- c.profile.Types = append(c.profile.Types, "cpu")
- }
- if *pprofHeap {
- c.profile.Types = append(c.profile.Types, "heap")
- }
- if *pprofMutex {
- c.profile.Types = append(c.profile.Types, "mutex")
- }
- if *pprofBlock {
- c.profile.Types = append(c.profile.Types, "block")
- }
-}
-
-// createProcess creates the collection process.
-func (p *profile) createProcess(c *Container) error {
- // Ensure our directory exists.
- if err := os.MkdirAll(p.BasePath, 0755); err != nil {
- return err
- }
-
- // Find the runtime to invoke.
- 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=24h containerID`.
- args := []string{root, "debug"}
- for _, profileArg := range p.Types {
- outputPath := filepath.Join(p.BasePath, fmt.Sprintf("%s.pprof", profileArg))
- args = append(args, fmt.Sprintf("--profile-%s=%s", profileArg, outputPath))
- }
- args = append(args, fmt.Sprintf("--duration=%s", p.Duration)) // Or until container exits.
- args = append(args, fmt.Sprintf("--delay=%s", p.Duration)) // Ditto.
- 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(100 * time.Millisecond)
- }
- p.cmd = exec.Command(path, args...)
- p.cmd.Stderr = os.Stderr // Pass through errors.
- if err := p.cmd.Start(); err != nil {
- return fmt.Errorf("start process failed: %v", err)
- }
-
- return nil
-}
-
-// killProcess kills the process, if running.
-func (p *profile) killProcess() error {
- if p.cmd != nil && p.cmd.Process != nil {
- return p.cmd.Process.Signal(syscall.SIGTERM)
- }
- return nil
-}
-
-// waitProcess waits for the process, if running.
-func (p *profile) waitProcess() error {
- defer func() { p.cmd = nil }()
- if p.cmd != nil {
- return p.cmd.Wait()
- }
- return nil
-}
-
-// Start is called when profiling is started.
-func (p *profile) Start(c *Container) error {
- return p.createProcess(c)
-}
-
-// Stop is called when profiling is started.
-func (p *profile) Stop(c *Container) error {
- killErr := p.killProcess()
- waitErr := p.waitProcess()
- if waitErr != nil && killErr != nil {
- return killErr
- }
- return waitErr // Ignore okay wait, err kill.
-}
diff --git a/pkg/test/dockerutil/profile_test.go b/pkg/test/dockerutil/profile_test.go
deleted file mode 100644
index 4fe9ce15c..000000000
--- a/pkg/test/dockerutil/profile_test.go
+++ /dev/null
@@ -1,125 +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/ioutil"
- "os"
- "path/filepath"
- "testing"
- "time"
-)
-
-type testCase struct {
- name string
- profile profile
- expectedFiles []string
-}
-
-func TestProfile(t *testing.T) {
- // Basepath and expected file names for each type of profile.
- tmpDir, err := ioutil.TempDir("", "")
- if err != nil {
- t.Fatalf("unable to create temporary directory: %v", err)
- }
- defer os.RemoveAll(tmpDir)
-
- // All expected names.
- basePath := tmpDir
- block := "block.pprof"
- cpu := "cpu.pprof"
- heap := "heap.pprof"
- mutex := "mutex.pprof"
-
- testCases := []testCase{
- {
- name: "One",
- profile: profile{
- BasePath: basePath,
- Types: []string{"cpu"},
- Duration: 2 * time.Second,
- },
- expectedFiles: []string{cpu},
- },
- {
- name: "All",
- profile: profile{
- BasePath: basePath,
- Types: []string{"block", "cpu", "heap", "mutex"},
- Duration: 2 * time.Second,
- },
- expectedFiles: []string{block, cpu, heap, mutex},
- },
- }
- for _, tc := range testCases {
- t.Run(tc.name, func(t *testing.T) {
- ctx := context.Background()
- c := MakeContainer(ctx, t)
-
- // Set basepath to include the container name so there are no conflicts.
- localProfile := tc.profile // Copy it.
- localProfile.BasePath = filepath.Join(localProfile.BasePath, tc.name)
-
- // Set directly on the container, to avoid flags.
- c.profile = &localProfile
-
- func() {
- defer c.CleanUp(ctx)
-
- // Start a container.
- if err := c.Spawn(ctx, RunOpts{
- Image: "basic/alpine",
- }, "sleep", "1000"); err != nil {
- t.Fatalf("run failed with: %v", err)
- }
-
- if status, err := c.Status(context.Background()); !status.Running {
- t.Fatalf("container is not yet running: %+v err: %v", status, err)
- }
-
- // End early if the expected files exist and have data.
- for start := time.Now(); time.Since(start) < localProfile.Duration; time.Sleep(100 * time.Millisecond) {
- if err := checkFiles(localProfile.BasePath, tc.expectedFiles); err == nil {
- break
- }
- }
- }()
-
- // Check all expected files exist and have data.
- if err := checkFiles(localProfile.BasePath, tc.expectedFiles); err != nil {
- t.Fatalf(err.Error())
- }
- })
- }
-}
-
-func checkFiles(basePath string, expectedFiles []string) error {
- for _, file := range expectedFiles {
- stat, err := os.Stat(filepath.Join(basePath, file))
- if err != nil {
- return fmt.Errorf("stat failed with: %v", err)
- } else if stat.Size() < 1 {
- return fmt.Errorf("file not written to: %+v", stat)
- }
- }
- return nil
-}
-
-func TestMain(m *testing.M) {
- EnsureSupportedDockerVersion()
- os.Exit(m.Run())
-}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-01 12:33:27 +0000