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Diffstat (limited to 'pkg/test/dockerutil/container.go')
| -rw-r--r-- | pkg/test/dockerutil/container.go | 547 |
1 files changed, 0 insertions, 547 deletions
diff --git a/pkg/test/dockerutil/container.go b/pkg/test/dockerutil/container.go deleted file mode 100644 index 2bf0a22ff..000000000 --- a/pkg/test/dockerutil/container.go +++ /dev/null @@ -1,547 +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() - - // Profiles are profiles added to this container. They contain methods - // that are run after Creation, Start, and Cleanup of this Container, along - // a handle to restart the profile. Generally, tests/benchmarks using - // profiles need to run as root. - profiles []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 -} - -// MakeContainer sets up the struct for a Docker container. -// -// Names of containers will be unique. -// Containers will check flags for profiling requests. -func MakeContainer(ctx context.Context, logger testutil.Logger) *Container { - c := MakeNativeContainer(ctx, logger) - c.runtime = *runtime - if p := MakePprofFromFlags(c); p != nil { - c.AddProfile(p) - } - return c -} - -// MakeNativeContainer sets up the struct for a DockerContainer using runc. Native -// containers aren't profiled. -func MakeNativeContainer(ctx context.Context, logger testutil.Logger) *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: "", - client: client, - } -} - -// AddProfile adds a profile to this container. -func (c *Container) AddProfile(p Profile) { - c.profiles = append(c.profiles, p) -} - -// RestartProfiles calls Restart on all profiles for this container. -func (c *Container) RestartProfiles() error { - for _, profile := range c.profiles { - if err := profile.Restart(c); err != nil { - return err - } - } - return nil -} - -// Spawn is analogous to 'docker run -d'. -func (c *Container) Spawn(ctx context.Context, r RunOpts, args ...string) error { - if err := c.create(ctx, 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, 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, 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, conf *container.Config, hostconf *container.HostConfig, netconf *network.NetworkingConfig) error { - return c.create(ctx, 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, c.config(r, args), c.hostConfig(r), nil) -} - -func (c *Container) create(ctx context.Context, conf *container.Config, hostconf *container.HostConfig, netconf *network.NetworkingConfig) error { - cont, err := c.client.ContainerCreate(ctx, conf, hostconf, nil, c.Name) - if err != nil { - return err - } - c.id = cont.ID - for _, profile := range c.profiles { - if err := profile.OnCreate(c); err != nil { - return fmt.Errorf("OnCreate method failed with: %v", err) - } - } - 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) - } - for _, profile := range c.profiles { - if err := profile.OnStart(c); err != nil { - return fmt.Errorf("OnStart method 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 { - 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) - } -} - -// Kill kills the container. -func (c *Container) Kill(ctx context.Context) error { - 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 profile cleanups before the container goes down. - for _, profile := range c.profiles { - profile.OnCleanUp(c) - } - - // Forget profiles. - c.profiles = nil - - // 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 -} |