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Diffstat (limited to 'runsc/test/testutil/docker.go')
-rw-r--r--runsc/test/testutil/docker.go410
1 files changed, 0 insertions, 410 deletions
diff --git a/runsc/test/testutil/docker.go b/runsc/test/testutil/docker.go
deleted file mode 100644
index 94e625259..000000000
--- a/runsc/test/testutil/docker.go
+++ /dev/null
@@ -1,410 +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 testutil
-
-import (
- "flag"
- "fmt"
- "io/ioutil"
- "log"
- "os"
- "os/exec"
- "path"
- "regexp"
- "strconv"
- "strings"
- "syscall"
- "time"
-
- "github.com/kr/pty"
-)
-
-var runtimeType = flag.String("runtime-type", "", "specify which runtime to use: kvm, hostnet, overlay")
-
-func getRuntime() string {
- r, ok := os.LookupEnv("RUNSC_RUNTIME")
- if !ok {
- r = "runsc-test"
- }
- if *runtimeType != "" {
- r += "-" + *runtimeType
- }
- return r
-}
-
-// IsPauseResumeSupported returns true if Pause/Resume is supported by runtime.
-func IsPauseResumeSupported() bool {
- // Native host network stack can't be saved.
- return !strings.Contains(getRuntime(), "hostnet")
-}
-
-// EnsureSupportedDockerVersion checks if correct docker is installed.
-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)
- }
-}
-
-// 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))
-}
-
-// MountArg formats the volume argument to mount in the container.
-func MountArg(source, target string, mode MountMode) string {
- return fmt.Sprintf("-v=%s:%s:%v", source, target, mode)
-}
-
-// LinkArg formats the link argument.
-func LinkArg(source *Docker, target string) string {
- return fmt.Sprintf("--link=%s:%s", source.Name, target)
-}
-
-// PrepareFiles creates temp directory to copy files there. The sandbox doesn't
-// have access to files in the test dir.
-func PrepareFiles(names ...string) (string, error) {
- dir, err := ioutil.TempDir("", "image-test")
- if err != nil {
- return "", fmt.Errorf("ioutil.TempDir failed: %v", err)
- }
- if err := os.Chmod(dir, 0777); err != nil {
- return "", fmt.Errorf("os.Chmod(%q, 0777) failed: %v", dir, err)
- }
- for _, name := range names {
- src := getLocalPath(name)
- dst := path.Join(dir, name)
- if err := Copy(src, dst); err != nil {
- return "", fmt.Errorf("testutil.Copy(%q, %q) failed: %v", src, dst, err)
- }
- }
- return dir, nil
-}
-
-func getLocalPath(file string) string {
- return path.Join(".", file)
-}
-
-// do executes docker command.
-func do(args ...string) (string, error) {
- log.Printf("Running: docker %s\n", args)
- cmd := exec.Command("docker", args...)
- out, err := cmd.CombinedOutput()
- if err != nil {
- return "", fmt.Errorf("error executing docker %s: %v\nout: %s", args, err, out)
- }
- return string(out), nil
-}
-
-// doWithPty executes docker command with stdio attached to a pty.
-func doWithPty(args ...string) (*exec.Cmd, *os.File, error) {
- log.Printf("Running with pty: docker %s\n", args)
- cmd := exec.Command("docker", args...)
- ptmx, err := pty.Start(cmd)
- if err != nil {
- return nil, nil, fmt.Errorf("error executing docker %s with a pty: %v", args, err)
- }
- return cmd, ptmx, nil
-}
-
-// Pull pulls a docker image. This is used in tests to isolate the
-// time to pull the image off the network from the time to actually
-// start the container, to avoid timeouts over slow networks.
-func Pull(image string) error {
- _, err := do("pull", image)
- return err
-}
-
-// Docker contains the name and the runtime of a docker container.
-type Docker struct {
- Runtime string
- Name string
-}
-
-// MakeDocker sets up the struct for a Docker container.
-// Names of containers will be unique.
-func MakeDocker(namePrefix string) Docker {
- return Docker{Name: RandomName(namePrefix), Runtime: getRuntime()}
-}
-
-// logDockerID logs a container id, which is needed to find container runsc logs.
-func (d *Docker) logDockerID() {
- id, err := d.ID()
- if err != nil {
- log.Printf("%v\n", err)
- }
- log.Printf("Name: %s ID: %v\n", d.Name, id)
-}
-
-// Create calls 'docker create' with the arguments provided.
-func (d *Docker) Create(args ...string) error {
- a := []string{"create", "--runtime", d.Runtime, "--name", d.Name}
- a = append(a, args...)
- _, err := do(a...)
- if err == nil {
- d.logDockerID()
- }
- return err
-}
-
-// Start calls 'docker start'.
-func (d *Docker) Start() error {
- if _, err := do("start", d.Name); err != nil {
- return fmt.Errorf("error starting container %q: %v", d.Name, err)
- }
- return nil
-}
-
-// Stop calls 'docker stop'.
-func (d *Docker) Stop() error {
- if _, err := do("stop", d.Name); err != nil {
- return fmt.Errorf("error stopping container %q: %v", d.Name, err)
- }
- return nil
-}
-
-// Run calls 'docker run' with the arguments provided. The container starts
-// running in the background and the call returns immediately.
-func (d *Docker) Run(args ...string) error {
- a := []string{"run", "--runtime", d.Runtime, "--name", d.Name, "-d"}
- a = append(a, args...)
- _, err := do(a...)
- if err == nil {
- d.logDockerID()
- }
- return err
-}
-
-// RunWithPty is like Run but with an attached pty.
-func (d *Docker) RunWithPty(args ...string) (*exec.Cmd, *os.File, error) {
- a := []string{"run", "--runtime", d.Runtime, "--name", d.Name, "-it"}
- a = append(a, args...)
- return doWithPty(a...)
-}
-
-// RunFg calls 'docker run' with the arguments provided in the foreground. It
-// blocks until the container exits and returns the output.
-func (d *Docker) RunFg(args ...string) (string, error) {
- a := []string{"run", "--runtime", d.Runtime, "--name", d.Name}
- a = append(a, args...)
- out, err := do(a...)
- if err == nil {
- d.logDockerID()
- }
- return string(out), err
-}
-
-// Logs calls 'docker logs'.
-func (d *Docker) Logs() (string, error) {
- return do("logs", d.Name)
-}
-
-// Exec calls 'docker exec' with the arguments provided.
-func (d *Docker) Exec(args ...string) (string, error) {
- a := []string{"exec", d.Name}
- a = append(a, args...)
- return do(a...)
-}
-
-// ExecWithTerminal calls 'docker exec -it' with the arguments provided and
-// attaches a pty to stdio.
-func (d *Docker) ExecWithTerminal(args ...string) (*exec.Cmd, *os.File, error) {
- a := []string{"exec", "-it", d.Name}
- a = append(a, args...)
- return doWithPty(a...)
-}
-
-// Pause calls 'docker pause'.
-func (d *Docker) Pause() error {
- if _, err := do("pause", d.Name); err != nil {
- return fmt.Errorf("error pausing container %q: %v", d.Name, err)
- }
- return nil
-}
-
-// Unpause calls 'docker pause'.
-func (d *Docker) Unpause() error {
- if _, err := do("unpause", d.Name); err != nil {
- return fmt.Errorf("error unpausing container %q: %v", d.Name, err)
- }
- return nil
-}
-
-// Checkpoint calls 'docker checkpoint'.
-func (d *Docker) Checkpoint(name string) error {
- if _, err := do("checkpoint", "create", d.Name, name); err != nil {
- return fmt.Errorf("error pausing container %q: %v", d.Name, err)
- }
- return nil
-}
-
-// Restore calls 'docker start --checkname [name]'.
-func (d *Docker) Restore(name string) error {
- if _, err := do("start", "--checkpoint", name, d.Name); err != nil {
- return fmt.Errorf("error starting container %q: %v", d.Name, err)
- }
- return nil
-}
-
-// Remove calls 'docker rm'.
-func (d *Docker) Remove() error {
- if _, err := do("rm", d.Name); err != nil {
- return fmt.Errorf("error deleting container %q: %v", d.Name, err)
- }
- return nil
-}
-
-// CleanUp kills and deletes the container (best effort).
-func (d *Docker) CleanUp() {
- d.logDockerID()
- if _, err := do("kill", d.Name); err != nil {
- if strings.Contains(err.Error(), "is not running") {
- // Nothing to kill. Don't log the error in this case.
- } else {
- log.Printf("error killing container %q: %v", d.Name, err)
- }
- }
- if err := d.Remove(); err != nil {
- log.Print(err)
- }
-}
-
-// 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 := do("inspect", "-f", format, d.Name)
- 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
-}
-
-// SandboxPid returns the PID to the sandbox process.
-func (d *Docker) SandboxPid() (int, error) {
- out, err := do("inspect", "-f={{.State.Pid}}", d.Name)
- 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 := do("inspect", "-f={{.Id}}", d.Name)
- 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 := do("wait", d.Name)
- 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 out string
- for exp := time.Now().Add(timeout); time.Now().Before(exp); {
- var err error
- out, err = d.Logs()
- if err != nil {
- return nil, err
- }
- if matches := re.FindStringSubmatch(out); matches != nil {
- // Success!
- return matches, nil
- }
- time.Sleep(100 * time.Millisecond)
- }
- return nil, fmt.Errorf("timeout waiting for output %q: %s", re.String(), out)
-}