mirror of
https://github.com/containers/podman.git
synced 2025-05-21 17:16:22 +08:00
130 lines
3.3 KiB
Go
130 lines
3.3 KiB
Go
package main
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import (
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"fmt"
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"sync"
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"github.com/pkg/errors"
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"github.com/projectatomic/libpod/libpod"
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"github.com/sirupsen/logrus"
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"github.com/urfave/cli"
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)
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var runDescription = "Runs a command in a new container from the given image"
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var runCommand = cli.Command{
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Name: "run",
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Usage: "run a command in a new container",
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Description: runDescription,
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Flags: createFlags,
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Action: runCmd,
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ArgsUsage: "IMAGE [COMMAND [ARG...]]",
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SkipArgReorder: true,
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}
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func runCmd(c *cli.Context) error {
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var imageName string
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if err := validateFlags(c, createFlags); err != nil {
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return err
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}
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runtime, err := getRuntime(c)
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if err != nil {
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return errors.Wrapf(err, "error creating libpod runtime")
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}
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createConfig, err := parseCreateOpts(c, runtime)
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if err != nil {
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return err
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}
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createImage := runtime.NewImage(createConfig.image)
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createImage.LocalName, _ = createImage.GetLocalImageName()
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if createImage.LocalName == "" {
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// The image wasnt found by the user input'd name or its fqname
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// Pull the image
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fmt.Printf("Trying to pull %s...", createImage.PullName)
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createImage.Pull()
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}
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runtimeSpec, err := createConfigToOCISpec(createConfig)
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if err != nil {
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return err
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}
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defer runtime.Shutdown(false)
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logrus.Debug("spec is ", runtimeSpec)
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if createImage.LocalName != "" {
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imageName = createImage.LocalName
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} else {
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imageName, err = createImage.GetFQName()
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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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logrus.Debug("imageName is ", imageName)
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imageID, err := createImage.GetImageID()
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if err != nil {
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return err
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}
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logrus.Debug("imageID is ", imageID)
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options, err := createConfig.GetContainerCreateOptions()
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if err != nil {
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return errors.Wrapf(err, "unable to parse new container options")
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}
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// Gather up the options for NewContainer which consist of With... funcs
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options = append(options, libpod.WithRootFSFromImage(imageID, imageName, false))
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options = append(options, libpod.WithSELinuxMountLabel(createConfig.mountLabel))
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ctr, err := runtime.NewContainer(runtimeSpec, options...)
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if err != nil {
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return err
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}
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logrus.Debug("new container created ", ctr.ID())
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if err := ctr.Init(); err != nil {
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return err
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}
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logrus.Debug("container storage created for %q", ctr.ID())
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if c.String("cidfile") != "" {
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libpod.WriteFile(ctr.ID(), c.String("cidfile"))
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return nil
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}
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// Create a bool channel to track that the console socket attach
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// is successful.
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attached := make(chan bool)
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// Create a waitgroup so we can sync and wait for all goroutines
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// to finish before exiting main
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var wg sync.WaitGroup
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if !createConfig.detach {
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// We increment the wg counter because we need to do the attach
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wg.Add(1)
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// Attach to the running container
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go func() {
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logrus.Debug("trying to attach to the container %s", ctr.ID())
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defer wg.Done()
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if err := ctr.Attach(false, c.String("detach-keys"), attached); err != nil {
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logrus.Errorf("unable to attach to container %s: %q", ctr.ID(), err)
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}
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}()
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if !<-attached {
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return errors.Errorf("unable to attach to container %s", ctr.ID())
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}
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}
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// Start the container
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if err := ctr.Start(); err != nil {
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return errors.Wrapf(err, "unable to start container %q", ctr.ID())
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}
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logrus.Debug("started container ", ctr.ID())
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if createConfig.detach {
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fmt.Printf("%s\n", ctr.ID())
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}
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wg.Wait()
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return nil
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}
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