86 lines
1.8 KiB
Go
86 lines
1.8 KiB
Go
package main
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import (
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"os"
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"path/filepath"
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gocontext "context"
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"github.com/docker/containerd/api/execution"
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"github.com/urfave/cli"
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)
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var execCommand = cli.Command{
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Name: "exec",
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Usage: "exec a new process in a running container",
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Flags: []cli.Flag{
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cli.StringFlag{
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Name: "id, i",
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Usage: "target container id",
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},
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cli.StringFlag{
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Name: "cwd, c",
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Usage: "current working directory for the process",
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},
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cli.BoolFlag{
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Name: "tty, t",
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Usage: "create a terminal for the process",
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},
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cli.StringSliceFlag{
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Name: "env, e",
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Value: &cli.StringSlice{},
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Usage: "environment variables for the process",
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},
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},
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Action: func(context *cli.Context) error {
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executionService, err := getExecutionService(context)
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if err != nil {
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return err
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}
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id := context.String("id")
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tmpDir, err := getTempDir(id)
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if err != nil {
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return err
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}
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defer os.RemoveAll(tmpDir)
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sOpts := &execution.StartProcessRequest{
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ContainerID: id,
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Process: &execution.Process{
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Cwd: context.String("cwd"),
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Terminal: context.Bool("tty"),
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Args: context.Args(),
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Env: context.StringSlice("env"),
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},
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Stdin: filepath.Join(tmpDir, "stdin"),
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Stdout: filepath.Join(tmpDir, "stdout"),
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Stderr: filepath.Join(tmpDir, "stderr"),
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Console: context.Bool("tty"),
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}
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fwg, err := prepareStdio(sOpts.Stdin, sOpts.Stdout, sOpts.Stderr)
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if err != nil {
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return err
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}
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sr, err := executionService.StartProcess(gocontext.Background(), sOpts)
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if err != nil {
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return err
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}
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_, err = executionService.DeleteProcess(gocontext.Background(), &execution.DeleteProcessRequest{
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ContainerID: id,
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ProcessID: sr.Process.ID,
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})
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if err != nil {
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return err
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}
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// Ensure we read all io
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fwg.Wait()
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return nil
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},
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}
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