2014-02-25 16:17:48 +00:00
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package main
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import (
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"bytes"
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2014-07-08 20:25:22 +00:00
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"encoding/json"
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2014-02-25 16:17:48 +00:00
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"fmt"
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"io"
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2014-10-08 02:07:51 +00:00
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"math/rand"
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2014-09-12 17:10:42 +00:00
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"net/http"
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"net/http/httptest"
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2014-09-02 14:35:25 +00:00
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"os"
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2014-02-25 16:17:48 +00:00
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"os/exec"
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2014-07-08 20:25:22 +00:00
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"reflect"
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2014-02-25 16:17:48 +00:00
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"strings"
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"syscall"
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2014-07-29 05:50:16 +00:00
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"time"
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2014-09-06 11:49:40 +00:00
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"github.com/docker/docker/vendor/src/code.google.com/p/go/src/pkg/archive/tar"
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2014-02-25 16:17:48 +00:00
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)
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func getExitCode(err error) (int, error) {
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exitCode := 0
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if exiterr, ok := err.(*exec.ExitError); ok {
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if procExit := exiterr.Sys().(syscall.WaitStatus); ok {
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return procExit.ExitStatus(), nil
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}
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}
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return exitCode, fmt.Errorf("failed to get exit code")
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}
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2014-08-13 14:23:11 +00:00
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func processExitCode(err error) (exitCode int) {
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2014-02-25 16:17:48 +00:00
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if err != nil {
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var exiterr error
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if exitCode, exiterr = getExitCode(err); exiterr != nil {
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// TODO: Fix this so we check the error's text.
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// we've failed to retrieve exit code, so we set it to 127
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exitCode = 127
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}
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}
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2014-08-13 14:23:11 +00:00
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return
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}
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func runCommandWithOutput(cmd *exec.Cmd) (output string, exitCode int, err error) {
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exitCode = 0
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out, err := cmd.CombinedOutput()
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exitCode = processExitCode(err)
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2014-02-25 16:17:48 +00:00
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output = string(out)
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return
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}
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func runCommandWithStdoutStderr(cmd *exec.Cmd) (stdout string, stderr string, exitCode int, err error) {
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2014-09-22 14:38:55 +00:00
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var (
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stderrBuffer, stdoutBuffer bytes.Buffer
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)
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2014-02-25 16:17:48 +00:00
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exitCode = 0
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2014-09-22 14:38:55 +00:00
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cmd.Stderr = &stderrBuffer
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cmd.Stdout = &stdoutBuffer
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err = cmd.Run()
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2014-08-13 14:23:11 +00:00
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exitCode = processExitCode(err)
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2014-02-25 16:17:48 +00:00
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2014-09-22 14:38:55 +00:00
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stdout = stdoutBuffer.String()
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stderr = stderrBuffer.String()
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2014-02-25 16:17:48 +00:00
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return
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}
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2014-08-13 16:02:04 +00:00
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var ErrCmdTimeout = fmt.Errorf("command timed out")
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func runCommandWithOutputAndTimeout(cmd *exec.Cmd, timeout time.Duration) (output string, exitCode int, err error) {
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done := make(chan error)
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go func() {
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output, exitCode, err = runCommandWithOutput(cmd)
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if err != nil || exitCode != 0 {
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done <- fmt.Errorf("failed to run command: %s", err)
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return
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}
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done <- nil
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}()
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select {
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case <-time.After(timeout):
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killFailed := cmd.Process.Kill()
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if killFailed == nil {
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fmt.Printf("failed to kill (pid=%d): %v\n", cmd.Process.Pid, err)
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}
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err = ErrCmdTimeout
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case <-done:
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break
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}
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return
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}
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2014-02-25 16:17:48 +00:00
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func runCommand(cmd *exec.Cmd) (exitCode int, err error) {
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exitCode = 0
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err = cmd.Run()
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2014-08-13 14:23:11 +00:00
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exitCode = processExitCode(err)
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2014-02-25 16:17:48 +00:00
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return
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}
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func logDone(message string) {
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fmt.Printf("[PASSED]: %s\n", message)
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}
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func stripTrailingCharacters(target string) string {
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target = strings.Trim(target, "\n")
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target = strings.Trim(target, " ")
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return target
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}
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2014-07-08 20:25:22 +00:00
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func unmarshalJSON(data []byte, result interface{}) error {
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err := json.Unmarshal(data, result)
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if err != nil {
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return err
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}
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return nil
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}
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func convertSliceOfStringsToMap(input []string) map[string]struct{} {
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output := make(map[string]struct{})
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for _, v := range input {
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output[v] = struct{}{}
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}
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return output
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}
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2014-07-29 05:50:16 +00:00
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2014-10-06 14:26:55 +00:00
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func waitForContainer(contID string, args ...string) error {
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args = append([]string{"run", "--name", contID}, args...)
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2014-07-29 05:50:16 +00:00
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cmd := exec.Command(dockerBinary, args...)
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if _, err := runCommand(cmd); err != nil {
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return err
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}
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2014-10-06 14:26:55 +00:00
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if err := waitRun(contID); err != nil {
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2014-07-29 05:50:16 +00:00
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return err
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}
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return nil
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}
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2014-10-06 14:26:55 +00:00
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func waitRun(contID string) error {
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2014-07-29 05:50:16 +00:00
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after := time.After(5 * time.Second)
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for {
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2014-10-06 14:26:55 +00:00
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cmd := exec.Command(dockerBinary, "inspect", "-f", "{{.State.Running}}", contID)
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2014-07-29 05:50:16 +00:00
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out, _, err := runCommandWithOutput(cmd)
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if err != nil {
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return fmt.Errorf("error executing docker inspect: %v", err)
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}
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if strings.Contains(out, "true") {
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break
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}
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select {
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case <-after:
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return fmt.Errorf("container did not come up in time")
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default:
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}
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time.Sleep(100 * time.Millisecond)
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}
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return nil
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}
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2014-09-02 14:35:25 +00:00
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func compareDirectoryEntries(e1 []os.FileInfo, e2 []os.FileInfo) error {
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var (
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e1Entries = make(map[string]struct{})
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e2Entries = make(map[string]struct{})
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)
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for _, e := range e1 {
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e1Entries[e.Name()] = struct{}{}
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}
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for _, e := range e2 {
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e2Entries[e.Name()] = struct{}{}
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}
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if !reflect.DeepEqual(e1Entries, e2Entries) {
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return fmt.Errorf("entries differ")
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}
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return nil
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}
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2014-09-06 11:49:40 +00:00
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func ListTar(f io.Reader) ([]string, error) {
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tr := tar.NewReader(f)
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var entries []string
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for {
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th, err := tr.Next()
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if err == io.EOF {
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// end of tar archive
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return entries, nil
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}
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if err != nil {
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return entries, err
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}
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entries = append(entries, th.Name)
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}
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}
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2014-09-12 17:10:42 +00:00
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type FileServer struct {
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*httptest.Server
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}
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func fileServer(files map[string]string) (*FileServer, error) {
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var handler http.HandlerFunc = func(w http.ResponseWriter, r *http.Request) {
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if filePath, found := files[r.URL.Path]; found {
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http.ServeFile(w, r, filePath)
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} else {
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http.Error(w, http.StatusText(404), 404)
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}
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}
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for _, file := range files {
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if _, err := os.Stat(file); err != nil {
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return nil, err
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}
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}
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server := httptest.NewServer(handler)
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return &FileServer{
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Server: server,
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}, nil
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}
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2014-09-17 16:34:45 +00:00
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func copyWithCP(source, target string) error {
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copyCmd := exec.Command("cp", "-rp", source, target)
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out, exitCode, err := runCommandWithOutput(copyCmd)
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if err != nil || exitCode != 0 {
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return fmt.Errorf("failed to copy: error: %q ,output: %q", err, out)
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}
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return nil
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}
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2014-10-08 02:07:51 +00:00
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func makeRandomString(n int) string {
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// make a really long string
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letters := []byte("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ")
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b := make([]byte, n)
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for i := range b {
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b[i] = letters[rand.Intn(len(letters))]
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}
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return string(b)
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}
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2014-10-30 18:52:13 +00:00
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2014-10-30 19:10:38 +00:00
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// Reads chunkSize bytes from reader after every interval.
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// Returns total read bytes.
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func consumeWithSpeed(reader io.Reader, chunkSize int, interval time.Duration, stop chan bool) (n int, err error) {
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2014-10-30 18:52:13 +00:00
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buffer := make([]byte, chunkSize)
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for {
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2014-10-30 19:10:38 +00:00
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select {
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case <-stop:
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2014-10-30 18:52:13 +00:00
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return
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2014-10-30 19:10:38 +00:00
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default:
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var readBytes int
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readBytes, err = reader.Read(buffer)
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n += readBytes
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if err != nil {
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if err == io.EOF {
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err = nil
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}
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return
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}
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time.Sleep(interval)
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2014-10-30 18:52:13 +00:00
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}
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}
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}
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