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114 lines
3.3 KiB
Go
114 lines
3.3 KiB
Go
package main
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import (
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"fmt"
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"os"
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"os/exec"
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"path/filepath"
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"strings"
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"github.com/docker/docker/pkg/stringutils"
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"github.com/docker/docker/pkg/testutil/cmd"
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"github.com/pkg/errors"
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)
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func getPrefixAndSlashFromDaemonPlatform() (prefix, slash string) {
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if testEnv.DaemonPlatform() == "windows" {
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return "c:", `\`
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}
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return "", "/"
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}
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// TODO: update code to call cmd.RunCmd directly, and remove this function
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// Deprecated: use pkg/testutil/cmd instead
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func runCommandWithOutput(execCmd *exec.Cmd) (string, int, error) {
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result := cmd.RunCmd(transformCmd(execCmd))
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return result.Combined(), result.ExitCode, result.Error
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}
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// Temporary shim for migrating commands to the new function
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func transformCmd(execCmd *exec.Cmd) cmd.Cmd {
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return cmd.Cmd{
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Command: execCmd.Args,
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Env: execCmd.Env,
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Dir: execCmd.Dir,
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Stdin: execCmd.Stdin,
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Stdout: execCmd.Stdout,
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}
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}
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// ParseCgroupPaths parses 'procCgroupData', which is output of '/proc/<pid>/cgroup', and returns
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// a map which cgroup name as key and path as value.
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func ParseCgroupPaths(procCgroupData string) map[string]string {
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cgroupPaths := map[string]string{}
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for _, line := range strings.Split(procCgroupData, "\n") {
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parts := strings.Split(line, ":")
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if len(parts) != 3 {
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continue
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}
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cgroupPaths[parts[1]] = parts[2]
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}
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return cgroupPaths
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}
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// RandomTmpDirPath provides a temporary path with rand string appended.
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// does not create or checks if it exists.
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func RandomTmpDirPath(s string, platform string) string {
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// TODO: why doesn't this use os.TempDir() ?
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tmp := "/tmp"
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if platform == "windows" {
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tmp = os.Getenv("TEMP")
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}
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path := filepath.Join(tmp, fmt.Sprintf("%s.%s", s, stringutils.GenerateRandomAlphaOnlyString(10)))
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if platform == "windows" {
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return filepath.FromSlash(path) // Using \
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}
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return filepath.ToSlash(path) // Using /
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}
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// RunCommandPipelineWithOutput runs the array of commands with the output
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// of each pipelined with the following (like cmd1 | cmd2 | cmd3 would do).
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// It returns the final output, the exitCode different from 0 and the error
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// if something bad happened.
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// Deprecated: use icmd instead
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func RunCommandPipelineWithOutput(cmds ...*exec.Cmd) (output string, err error) {
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if len(cmds) < 2 {
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return "", errors.New("pipeline does not have multiple cmds")
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}
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// connect stdin of each cmd to stdout pipe of previous cmd
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for i, cmd := range cmds {
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if i > 0 {
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prevCmd := cmds[i-1]
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cmd.Stdin, err = prevCmd.StdoutPipe()
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if err != nil {
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return "", fmt.Errorf("cannot set stdout pipe for %s: %v", cmd.Path, err)
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}
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}
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}
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// start all cmds except the last
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for _, cmd := range cmds[:len(cmds)-1] {
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if err = cmd.Start(); err != nil {
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return "", fmt.Errorf("starting %s failed with error: %v", cmd.Path, err)
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}
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}
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defer func() {
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var pipeErrMsgs []string
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// wait all cmds except the last to release their resources
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for _, cmd := range cmds[:len(cmds)-1] {
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if pipeErr := cmd.Wait(); pipeErr != nil {
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pipeErrMsgs = append(pipeErrMsgs, fmt.Sprintf("command %s failed with error: %v", cmd.Path, pipeErr))
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}
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}
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if len(pipeErrMsgs) > 0 && err == nil {
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err = fmt.Errorf("pipelineError from Wait: %v", strings.Join(pipeErrMsgs, ", "))
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}
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}()
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// wait on last cmd
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out, err := cmds[len(cmds)-1].CombinedOutput()
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return string(out), err
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}
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