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authorZach Koopmans <zkoopmans@google.com>2020-07-08 13:24:58 -0700
committergVisor bot <gvisor-bot@google.com>2020-07-08 13:26:23 -0700
commitf3fa43cf237109c1e1cb0cf7ba63bb793cc2ff1f (patch)
tree34401d90d4d4e892020a11baf37311c1ec20aaa6 /pkg/test
parente1f11dea286789ffa116e357bea66ee6b422deae (diff)
Move all tests to new docker API.
Moves following to new dockerutil API: - //test/e2e:integration_test - //test/image:image_test - //test/iptables:iptables_test - //test/root:root_test - //test/packetimpact:packetimpact_test PiperOrigin-RevId: 320253118
Diffstat (limited to 'pkg/test')
-rw-r--r--pkg/test/dockerutil/BUILD15
-rw-r--r--pkg/test/dockerutil/container.go501
-rw-r--r--pkg/test/dockerutil/dockerutil.go600
-rw-r--r--pkg/test/dockerutil/exec.go194
-rw-r--r--pkg/test/dockerutil/network.go113
5 files changed, 821 insertions, 602 deletions
diff --git a/pkg/test/dockerutil/BUILD b/pkg/test/dockerutil/BUILD
index 7c8758e35..83b80c8bc 100644
--- a/pkg/test/dockerutil/BUILD
+++ b/pkg/test/dockerutil/BUILD
@@ -5,10 +5,21 @@ package(licenses = ["notice"])
go_library(
name = "dockerutil",
testonly = 1,
- srcs = ["dockerutil.go"],
+ srcs = [
+ "container.go",
+ "dockerutil.go",
+ "exec.go",
+ "network.go",
+ ],
visibility = ["//:sandbox"],
deps = [
"//pkg/test/testutil",
- "@com_github_kr_pty//:go_default_library",
+ "@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",
],
)
diff --git a/pkg/test/dockerutil/container.go b/pkg/test/dockerutil/container.go
new file mode 100644
index 000000000..17acdaf6f
--- /dev/null
+++ b/pkg/test/dockerutil/container.go
@@ -0,0 +1,501 @@
+// 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"
+ "io/ioutil"
+ "net"
+ "os"
+ "path"
+ "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
+ cleanups []func()
+ copyErr error
+
+ // Stores streams attached to the container. Used by WaitForOutputSubmatch.
+ streams types.HijackedResponse
+
+ // stores previously read data from the attached streams.
+ streamBuf bytes.Buffer
+}
+
+// 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.
+func MakeContainer(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: *runtime,
+ client: client,
+ }
+}
+
+// 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, args); 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
+ }
+
+ if err := c.Start(ctx); err != nil {
+ return Process{}, err
+ }
+
+ return Process{container: c, conn: c.streams}, 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, args); 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 {
+ cont, err := c.client.ContainerCreate(ctx, conf, hostconf, netconf, c.Name)
+ if err != nil {
+ return err
+ }
+ c.id = cont.ID
+ return nil
+}
+
+// Create is analogous to 'docker create'.
+func (c *Container) Create(ctx context.Context, r RunOpts, args ...string) error {
+ return c.create(ctx, r, args)
+}
+
+func (c *Container) create(ctx context.Context, r RunOpts, args []string) error {
+ conf := c.config(r, args)
+ hostconf := c.hostConfig(r)
+ 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 {
+
+ // Open a connection to the container for parsing logs and for TTY.
+ streams, err := c.client.ContainerAttach(ctx, c.id,
+ types.ContainerAttachOptions{
+ Stream: true,
+ Stdin: true,
+ Stdout: true,
+ Stderr: true,
+ })
+ if err != nil {
+ return fmt.Errorf("failed to connect to container: %v", err)
+ }
+
+ c.streams = streams
+ c.cleanups = append(c.cleanups, func() {
+ c.streams.Close()
+ })
+
+ return c.client.ContainerStart(ctx, c.id, types.ContainerStartOptions{})
+}
+
+// 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
+}
+
+// FindIP returns the IP address of the container.
+func (c *Container) FindIP(ctx context.Context) (net.IP, error) {
+ resp, err := c.client.ContainerInspect(ctx, c.id)
+ if err != nil {
+ return nil, err
+ }
+
+ ip := net.ParseIP(resp.NetworkSettings.DefaultNetworkSettings.IPAddress)
+ if ip == nil {
+ return net.IP{}, fmt.Errorf("invalid IP: %q", ip)
+ }
+ 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, err := testutil.FindFile(name)
+ if err != nil {
+ c.copyErr = fmt.Errorf("testutil.FindFile(%q) failed: %v", 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 {
+ timeoutChan := time.After(timeout)
+ statusChan, errChan := c.client.ContainerWait(ctx, c.id, container.WaitConditionNotRunning)
+ select {
+ case err := <-errChan:
+ return err
+ case <-statusChan:
+ return nil
+ case <-timeoutChan:
+ return fmt.Errorf("container %s timed out after %v seconds", c.Name, timeout.Seconds())
+ }
+}
+
+// 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) {
+ re := regexp.MustCompile(pattern)
+ if matches := re.FindStringSubmatch(c.streamBuf.String()); matches != nil {
+ return matches, nil
+ }
+
+ for exp := time.Now().Add(timeout); time.Now().Before(exp); {
+ c.streams.Conn.SetDeadline(time.Now().Add(50 * time.Millisecond))
+ _, err := stdcopy.StdCopy(&c.streamBuf, &c.streamBuf, c.streams.Reader)
+
+ if err != nil {
+ // check that it wasn't a timeout
+ if nerr, ok := err.(net.Error); !ok || !nerr.Timeout() {
+ return nil, err
+ }
+ }
+
+ if matches := re.FindStringSubmatch(c.streamBuf.String()); matches != nil {
+ return matches, nil
+ }
+ }
+
+ return nil, fmt.Errorf("timeout waiting for output %q: out: %s", re.String(), c.streamBuf.String())
+}
+
+// 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) {
+ // 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
+ // Execute all cleanups.
+ for _, c := range c.cleanups {
+ c()
+ }
+ c.cleanups = nil
+}
diff --git a/pkg/test/dockerutil/dockerutil.go b/pkg/test/dockerutil/dockerutil.go
index 819dd0a59..f95ae3cd1 100644
--- a/pkg/test/dockerutil/dockerutil.go
+++ b/pkg/test/dockerutil/dockerutil.go
@@ -22,17 +22,10 @@ import (
"io"
"io/ioutil"
"log"
- "net"
- "os"
"os/exec"
- "path"
"regexp"
"strconv"
- "strings"
- "syscall"
- "time"
- "github.com/kr/pty"
"gvisor.dev/gvisor/pkg/test/testutil"
)
@@ -126,596 +119,3 @@ func Save(logger testutil.Logger, image string, w io.Writer) error {
cmd.Stdout = w // Send directly to the writer.
return cmd.Run()
}
-
-// MountMode describes if the mount should be ro or rw.
-type MountMode int
-
-const (
- // ReadOnly is what the name says.
- ReadOnly MountMode = iota
- // ReadWrite is what the name says.
- ReadWrite
-)
-
-// String returns the mount mode argument for this MountMode.
-func (m MountMode) String() string {
- switch m {
- case ReadOnly:
- return "ro"
- case ReadWrite:
- return "rw"
- }
- panic(fmt.Sprintf("invalid mode: %d", m))
-}
-
-// DockerNetwork contains the name of a docker network.
-type DockerNetwork struct {
- logger testutil.Logger
- Name string
- Subnet *net.IPNet
- containers []*Docker
-}
-
-// NewDockerNetwork sets up the struct for a Docker network. Names of networks
-// will be unique.
-func NewDockerNetwork(logger testutil.Logger) *DockerNetwork {
- return &DockerNetwork{
- logger: logger,
- Name: testutil.RandomID(logger.Name()),
- }
-}
-
-// Create calls 'docker network create'.
-func (n *DockerNetwork) Create(args ...string) error {
- a := []string{"docker", "network", "create"}
- if n.Subnet != nil {
- a = append(a, fmt.Sprintf("--subnet=%s", n.Subnet))
- }
- a = append(a, args...)
- a = append(a, n.Name)
- return testutil.Command(n.logger, a...).Run()
-}
-
-// Connect calls 'docker network connect' with the arguments provided.
-func (n *DockerNetwork) Connect(container *Docker, args ...string) error {
- a := []string{"docker", "network", "connect"}
- a = append(a, args...)
- a = append(a, n.Name, container.Name)
- if err := testutil.Command(n.logger, a...).Run(); err != nil {
- return err
- }
- n.containers = append(n.containers, container)
- return nil
-}
-
-// Cleanup cleans up the docker network and all the containers attached to it.
-func (n *DockerNetwork) Cleanup() error {
- for _, c := range n.containers {
- // Don't propagate the error, it might be that the container
- // was already cleaned up.
- if err := c.Kill(); err != nil {
- n.logger.Logf("unable to kill container during cleanup: %s", err)
- }
- }
-
- if err := testutil.Command(n.logger, "docker", "network", "rm", n.Name).Run(); err != nil {
- return err
- }
- return nil
-}
-
-// Docker contains the name and the runtime of a docker container.
-type Docker struct {
- logger testutil.Logger
- Runtime string
- Name string
- copyErr error
- cleanups []func()
-}
-
-// MakeDocker sets up the struct for a Docker container.
-//
-// Names of containers will be unique.
-func MakeDocker(logger testutil.Logger) *Docker {
- // Slashes are not allowed in container names.
- name := testutil.RandomID(logger.Name())
- name = strings.ReplaceAll(name, "/", "-")
-
- return &Docker{
- logger: logger,
- Name: name,
- Runtime: *runtime,
- }
-}
-
-// CopyFiles copies in and mounts the given files. They are always ReadOnly.
-func (d *Docker) CopyFiles(opts *RunOpts, targetDir string, sources ...string) {
- dir, err := ioutil.TempDir("", d.Name)
- if err != nil {
- d.copyErr = fmt.Errorf("ioutil.TempDir failed: %v", err)
- return
- }
- d.cleanups = append(d.cleanups, func() { os.RemoveAll(dir) })
- if err := os.Chmod(dir, 0755); err != nil {
- d.copyErr = fmt.Errorf("os.Chmod(%q, 0755) failed: %v", dir, err)
- return
- }
- for _, name := range sources {
- src, err := testutil.FindFile(name)
- if err != nil {
- d.copyErr = fmt.Errorf("testutil.FindFile(%q) failed: %v", name, err)
- return
- }
- dst := path.Join(dir, path.Base(name))
- if err := testutil.Copy(src, dst); err != nil {
- d.copyErr = fmt.Errorf("testutil.Copy(%q, %q) failed: %v", src, dst, err)
- return
- }
- d.logger.Logf("copy: %s -> %s", src, dst)
- }
- opts.Mounts = append(opts.Mounts, Mount{
- Source: dir,
- Target: targetDir,
- Mode: ReadOnly,
- })
-}
-
-// Mount describes a mount point inside the container.
-type Mount struct {
- // Source is the path outside the container.
- Source string
-
- // Target is the path inside the container.
- Target string
-
- // Mode tells whether the mount inside the container should be readonly.
- Mode MountMode
-}
-
-// Link informs dockers that a given container needs to be made accessible from
-// the container being configured.
-type Link struct {
- // Source is the container to connect to.
- Source *Docker
-
- // Target is the alias for the container.
- Target string
-}
-
-// 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 kB.
- Memory int
-
- // 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
-
- // Pty indicates that a pty will be allocated. If this is non-nil, then
- // this will run after start-up with the *exec.Command and Pty file
- // passed in to the function.
- Pty func(*exec.Cmd, *os.File)
-
- // Foreground indicates that the container should be run in the
- // foreground. If this is true, then the output will be available as a
- // return value from the Run function.
- Foreground bool
-
- // Mounts is the list of directories/files to be mounted inside the container.
- Mounts []Mount
-
- // Links is the list of containers to be connected to the container.
- Links []Link
-
- // Extra are extra arguments that may be passed.
- Extra []string
-}
-
-// args returns common arguments.
-//
-// Note that this does not define the complete behavior.
-func (d *Docker) argsFor(r *RunOpts, command string, p []string) (rv []string) {
- isExec := command == "exec"
- isRun := command == "run"
-
- if isRun || isExec {
- rv = append(rv, "-i")
- }
- if r.Pty != nil {
- rv = append(rv, "-t")
- }
- if r.User != "" {
- rv = append(rv, fmt.Sprintf("--user=%s", r.User))
- }
- if r.Privileged {
- rv = append(rv, "--privileged")
- }
- for _, c := range r.CapAdd {
- rv = append(rv, fmt.Sprintf("--cap-add=%s", c))
- }
- for _, c := range r.CapDrop {
- rv = append(rv, fmt.Sprintf("--cap-drop=%s", c))
- }
- for _, e := range r.Env {
- rv = append(rv, fmt.Sprintf("--env=%s", e))
- }
- if r.WorkDir != "" {
- rv = append(rv, fmt.Sprintf("--workdir=%s", r.WorkDir))
- }
- if !isExec {
- if r.Memory != 0 {
- rv = append(rv, fmt.Sprintf("--memory=%dk", r.Memory))
- }
- for _, p := range r.Ports {
- rv = append(rv, fmt.Sprintf("--publish=%d", p))
- }
- if r.ReadOnly {
- rv = append(rv, fmt.Sprintf("--read-only"))
- }
- if len(p) > 0 {
- rv = append(rv, "--entrypoint=")
- }
- }
-
- // Always attach the test environment & Extra.
- rv = append(rv, fmt.Sprintf("--env=RUNSC_TEST_NAME=%s", d.Name))
- rv = append(rv, r.Extra...)
-
- // Attach necessary bits.
- if isExec {
- rv = append(rv, d.Name)
- } else {
- for _, m := range r.Mounts {
- rv = append(rv, fmt.Sprintf("-v=%s:%s:%v", m.Source, m.Target, m.Mode))
- }
- for _, l := range r.Links {
- rv = append(rv, fmt.Sprintf("--link=%s:%s", l.Source.Name, l.Target))
- }
-
- if len(d.Runtime) > 0 {
- rv = append(rv, fmt.Sprintf("--runtime=%s", d.Runtime))
- }
- rv = append(rv, fmt.Sprintf("--name=%s", d.Name))
- rv = append(rv, testutil.ImageByName(r.Image))
- }
-
- // Attach other arguments.
- rv = append(rv, p...)
- return rv
-}
-
-// run runs a complete command.
-func (d *Docker) run(r RunOpts, command string, p ...string) (string, error) {
- if d.copyErr != nil {
- return "", d.copyErr
- }
- basicArgs := []string{"docker"}
- if command == "spawn" {
- command = "run"
- basicArgs = append(basicArgs, command)
- basicArgs = append(basicArgs, "-d")
- } else {
- basicArgs = append(basicArgs, command)
- }
- customArgs := d.argsFor(&r, command, p)
- cmd := testutil.Command(d.logger, append(basicArgs, customArgs...)...)
- if r.Pty != nil {
- // If allocating a terminal, then we just ignore the output
- // from the command.
- ptmx, err := pty.Start(cmd.Cmd)
- if err != nil {
- return "", err
- }
- defer cmd.Wait() // Best effort.
- r.Pty(cmd.Cmd, ptmx)
- } else {
- // Can't support PTY or streaming.
- out, err := cmd.CombinedOutput()
- return string(out), err
- }
- return "", nil
-}
-
-// Create calls 'docker create' with the arguments provided.
-func (d *Docker) Create(r RunOpts, args ...string) error {
- out, err := d.run(r, "create", args...)
- if strings.Contains(out, "Unable to find image") {
- return fmt.Errorf("unable to find image, did you remember to `make load-%s`: %w", r.Image, err)
- }
- return err
-}
-
-// Start calls 'docker start'.
-func (d *Docker) Start() error {
- return testutil.Command(d.logger, "docker", "start", d.Name).Run()
-}
-
-// Stop calls 'docker stop'.
-func (d *Docker) Stop() error {
- return testutil.Command(d.logger, "docker", "stop", d.Name).Run()
-}
-
-// Run calls 'docker run' with the arguments provided.
-func (d *Docker) Run(r RunOpts, args ...string) (string, error) {
- return d.run(r, "run", args...)
-}
-
-// Spawn starts the container and detaches.
-func (d *Docker) Spawn(r RunOpts, args ...string) error {
- _, err := d.run(r, "spawn", args...)
- return err
-}
-
-// Logs calls 'docker logs'.
-func (d *Docker) Logs() (string, error) {
- // Don't capture the output; since it will swamp the logs.
- out, err := exec.Command("docker", "logs", d.Name).CombinedOutput()
- return string(out), err
-}
-
-// Exec calls 'docker exec' with the arguments provided.
-func (d *Docker) Exec(r RunOpts, args ...string) (string, error) {
- return d.run(r, "exec", args...)
-}
-
-// Pause calls 'docker pause'.
-func (d *Docker) Pause() error {
- return testutil.Command(d.logger, "docker", "pause", d.Name).Run()
-}
-
-// Unpause calls 'docker pause'.
-func (d *Docker) Unpause() error {
- return testutil.Command(d.logger, "docker", "unpause", d.Name).Run()
-}
-
-// Checkpoint calls 'docker checkpoint'.
-func (d *Docker) Checkpoint(name string) error {
- return testutil.Command(d.logger, "docker", "checkpoint", "create", d.Name, name).Run()
-}
-
-// Restore calls 'docker start --checkname [name]'.
-func (d *Docker) Restore(name string) error {
- return testutil.Command(d.logger, "docker", "start", fmt.Sprintf("--checkpoint=%s", name), d.Name).Run()
-}
-
-// Kill calls 'docker kill'.
-func (d *Docker) Kill() error {
- // Skip logging this command, it will likely be an error.
- out, err := exec.Command("docker", "kill", d.Name).CombinedOutput()
- if err != nil && !strings.Contains(string(out), "is not running") {
- return err
- }
- return nil
-}
-
-// Remove calls 'docker rm'.
-func (d *Docker) Remove() error {
- return testutil.Command(d.logger, "docker", "rm", d.Name).Run()
-}
-
-// CleanUp kills and deletes the container (best effort).
-func (d *Docker) CleanUp() {
- // Kill the container.
- if err := d.Kill(); err != nil {
- // Just log; can't do anything here.
- d.logger.Logf("error killing container %q: %v", d.Name, err)
- }
- // Remove the image.
- if err := d.Remove(); err != nil {
- d.logger.Logf("error removing container %q: %v", d.Name, err)
- }
- // Execute all cleanups.
- for _, c := range d.cleanups {
- c()
- }
- d.cleanups = nil
-}
-
-// FindPort returns the host port that is mapped to 'sandboxPort'. This calls
-// docker to allocate a free port in the host and prevent conflicts.
-func (d *Docker) FindPort(sandboxPort int) (int, error) {
- format := fmt.Sprintf(`{{ (index (index .NetworkSettings.Ports "%d/tcp") 0).HostPort }}`, sandboxPort)
- out, err := testutil.Command(d.logger, "docker", "inspect", "-f", format, d.Name).CombinedOutput()
- if err != nil {
- return -1, fmt.Errorf("error retrieving port: %v", err)
- }
- port, err := strconv.Atoi(strings.TrimSuffix(string(out), "\n"))
- if err != nil {
- return -1, fmt.Errorf("error parsing port %q: %v", out, err)
- }
- return port, nil
-}
-
-// FindIP returns the IP address of the container.
-func (d *Docker) FindIP() (net.IP, error) {
- const format = `{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}`
- out, err := testutil.Command(d.logger, "docker", "inspect", "-f", format, d.Name).CombinedOutput()
- if err != nil {
- return net.IP{}, fmt.Errorf("error retrieving IP: %v", err)
- }
- ip := net.ParseIP(strings.TrimSpace(string(out)))
- if ip == nil {
- return net.IP{}, fmt.Errorf("invalid IP: %q", string(out))
- }
- return ip, nil
-}
-
-// A NetworkInterface is container's network interface information.
-type NetworkInterface struct {
- IPv4 net.IP
- MAC net.HardwareAddr
-}
-
-// ListNetworks returns the network interfaces of the container, keyed by
-// Docker network name.
-func (d *Docker) ListNetworks() (map[string]NetworkInterface, error) {
- const format = `{{json .NetworkSettings.Networks}}`
- out, err := testutil.Command(d.logger, "docker", "inspect", "-f", format, d.Name).CombinedOutput()
- if err != nil {
- return nil, fmt.Errorf("error network interfaces: %q: %w", string(out), err)
- }
-
- networks := map[string]map[string]string{}
- if err := json.Unmarshal(out, &networks); err != nil {
- return nil, fmt.Errorf("error decoding network interfaces: %w", err)
- }
-
- interfaces := map[string]NetworkInterface{}
- for name, iface := range networks {
- var netface NetworkInterface
-
- rawIP := strings.TrimSpace(iface["IPAddress"])
- if rawIP != "" {
- ip := net.ParseIP(rawIP)
- if ip == nil {
- return nil, fmt.Errorf("invalid IP: %q", rawIP)
- }
- // Docker's IPAddress field is IPv4. The IPv6 address
- // is stored in the GlobalIPv6Address field.
- netface.IPv4 = ip
- }
-
- rawMAC := strings.TrimSpace(iface["MacAddress"])
- if rawMAC != "" {
- mac, err := net.ParseMAC(rawMAC)
- if err != nil {
- return nil, fmt.Errorf("invalid MAC: %q: %w", rawMAC, err)
- }
- netface.MAC = mac
- }
-
- interfaces[name] = netface
- }
-
- return interfaces, nil
-}
-
-// SandboxPid returns the PID to the sandbox process.
-func (d *Docker) SandboxPid() (int, error) {
- out, err := testutil.Command(d.logger, "docker", "inspect", "-f={{.State.Pid}}", d.Name).CombinedOutput()
- if err != nil {
- return -1, fmt.Errorf("error retrieving pid: %v", err)
- }
- pid, err := strconv.Atoi(strings.TrimSuffix(string(out), "\n"))
- if err != nil {
- return -1, fmt.Errorf("error parsing pid %q: %v", out, err)
- }
- return pid, nil
-}
-
-// ID returns the container ID.
-func (d *Docker) ID() (string, error) {
- out, err := testutil.Command(d.logger, "docker", "inspect", "-f={{.Id}}", d.Name).CombinedOutput()
- if err != nil {
- return "", fmt.Errorf("error retrieving ID: %v", err)
- }
- return strings.TrimSpace(string(out)), nil
-}
-
-// Wait waits for container to exit, up to the given timeout. Returns error if
-// wait fails or timeout is hit. Returns the application return code otherwise.
-// Note that the application may have failed even if err == nil, always check
-// the exit code.
-func (d *Docker) Wait(timeout time.Duration) (syscall.WaitStatus, error) {
- timeoutChan := time.After(timeout)
- waitChan := make(chan (syscall.WaitStatus))
- errChan := make(chan (error))
-
- go func() {
- out, err := testutil.Command(d.logger, "docker", "wait", d.Name).CombinedOutput()
- if err != nil {
- errChan <- fmt.Errorf("error waiting for container %q: %v", d.Name, err)
- }
- exit, err := strconv.Atoi(strings.TrimSuffix(string(out), "\n"))
- if err != nil {
- errChan <- fmt.Errorf("error parsing exit code %q: %v", out, err)
- }
- waitChan <- syscall.WaitStatus(uint32(exit))
- }()
-
- select {
- case ws := <-waitChan:
- return ws, nil
- case err := <-errChan:
- return syscall.WaitStatus(1), err
- case <-timeoutChan:
- return syscall.WaitStatus(1), fmt.Errorf("timeout waiting for container %q", d.Name)
- }
-}
-
-// WaitForOutput calls 'docker logs' to retrieve containers output and searches
-// for the given pattern.
-func (d *Docker) WaitForOutput(pattern string, timeout time.Duration) (string, error) {
- matches, err := d.WaitForOutputSubmatch(pattern, timeout)
- if err != nil {
- return "", err
- }
- if len(matches) == 0 {
- return "", nil
- }
- return matches[0], nil
-}
-
-// WaitForOutputSubmatch calls 'docker logs' to retrieve containers output and
-// searches for the given pattern. It returns any regexp submatches as well.
-func (d *Docker) WaitForOutputSubmatch(pattern string, timeout time.Duration) ([]string, error) {
- re := regexp.MustCompile(pattern)
- var (
- lastOut string
- stopped bool
- )
- for exp := time.Now().Add(timeout); time.Now().Before(exp); {
- out, err := d.Logs()
- if err != nil {
- return nil, err
- }
- if out != lastOut {
- if lastOut == "" {
- d.logger.Logf("output (start): %s", out)
- } else if strings.HasPrefix(out, lastOut) {
- d.logger.Logf("output (contn): %s", out[len(lastOut):])
- } else {
- d.logger.Logf("output (trunc): %s", out)
- }
- lastOut = out // Save for future.
- if matches := re.FindStringSubmatch(lastOut); matches != nil {
- return matches, nil // Success!
- }
- } else if stopped {
- // The sandbox stopped and we looked at the
- // logs at least once since determining that.
- return nil, fmt.Errorf("no longer running: %v", err)
- } else if pid, err := d.SandboxPid(); pid == 0 || err != nil {
- // The sandbox may have stopped, but it's
- // possible that it has emitted the terminal
- // line between the last call to Logs and here.
- stopped = true
- }
- time.Sleep(100 * time.Millisecond)
- }
- return nil, fmt.Errorf("timeout waiting for output %q: %s", re.String(), lastOut)
-}
diff --git a/pkg/test/dockerutil/exec.go b/pkg/test/dockerutil/exec.go
new file mode 100644
index 000000000..921d1da9e
--- /dev/null
+++ b/pkg/test/dockerutil/exec.go
@@ -0,0 +1,194 @@
+// 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)
+ }
+
+ if err := c.client.ContainerExecStart(ctx, resp.ID, types.ExecStartCheck{}); err != nil {
+ hijack.Close()
+ return Process{}, fmt.Errorf("exec start 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
new file mode 100644
index 000000000..047091e75
--- /dev/null
+++ b/pkg/test/dockerutil/network.go
@@ -0,0 +1,113 @@
+// 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)
+}