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