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package main
import (
"fmt"
"os"
"github.com/containers/libpod/cmd/podman/cliconfig"
"github.com/containers/libpod/cmd/podman/shared"
"github.com/containers/libpod/cmd/podman/shared/parse"
"github.com/containers/libpod/libpod/define"
"github.com/containers/libpod/pkg/adapter"
"github.com/containers/libpod/pkg/errorhandling"
"github.com/containers/libpod/pkg/util"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
"github.com/spf13/cobra"
)
var (
// Kernel namespaces shared by default within a pod
podCreateCommand cliconfig.PodCreateValues
podCreateDescription = `After creating the pod, the pod ID is printed to stdout.
You can then start it at any time with the podman pod start <pod_id> command. The pod will be created with the initial state 'created'.`
_podCreateCommand = &cobra.Command{
Use: "create",
Args: noSubArgs,
Short: "Create a new empty pod",
Long: podCreateDescription,
RunE: func(cmd *cobra.Command, args []string) error {
podCreateCommand.InputArgs = args
podCreateCommand.GlobalFlags = MainGlobalOpts
podCreateCommand.Remote = remoteclient
return podCreateCmd(&podCreateCommand)
},
}
)
func init() {
podCreateCommand.Command = _podCreateCommand
podCreateCommand.SetHelpTemplate(HelpTemplate())
podCreateCommand.SetUsageTemplate(UsageTemplate())
flags := podCreateCommand.Flags()
flags.SetInterspersed(false)
// When we are ready to add the network options to the create commmand, we need to uncomment
// the following
//flags.AddFlagSet(getNetFlags())
// Once this is uncommented, then the publish option below needs to be removed because it
// conflicts with the publish in getNetFlags. Upon removal, the c.Publish will not work
// anymore and needs to be cleaned up. I suggest starting with removing the Publish attribute
// from PodCreateValues structure. Running make should then expose all areas that need to be
// addressed. To get the value of publish (and other flags in getNetFlags, use the syntax:
// c.<type>("<flag_name") or c.Bool("publish")
// Remember to do this safely by checking len, etc.
flags.StringVar(&podCreateCommand.CgroupParent, "cgroup-parent", "", "Set parent cgroup for the pod")
flags.BoolVar(&podCreateCommand.Infra, "infra", true, "Create an infra container associated with the pod to share namespaces with")
flags.StringVar(&podCreateCommand.InfraImage, "infra-image", define.DefaultInfraImage, "The image of the infra container to associate with the pod")
flags.StringVar(&podCreateCommand.InfraCommand, "infra-command", define.DefaultInfraCommand, "The command to run on the infra container when the pod is started")
flags.StringSliceVar(&podCreateCommand.LabelFile, "label-file", []string{}, "Read in a line delimited file of labels")
flags.StringSliceVarP(&podCreateCommand.Labels, "label", "l", []string{}, "Set metadata on pod (default [])")
flags.StringVarP(&podCreateCommand.Name, "name", "n", "", "Assign a name to the pod")
flags.StringVarP(&podCreateCommand.Hostname, "hostname", "", "", "Set a hostname to the pod")
flags.StringVar(&podCreateCommand.PodIDFile, "pod-id-file", "", "Write the pod ID to the file")
flags.StringSliceVarP(&podCreateCommand.Publish, "publish", "p", []string{}, "Publish a container's port, or a range of ports, to the host (default [])")
flags.StringVar(&podCreateCommand.Share, "share", shared.DefaultKernelNamespaces, "A comma delimited list of kernel namespaces the pod will share")
}
func podCreateCmd(c *cliconfig.PodCreateValues) error {
var (
err error
podIdFile *os.File
)
runtime, err := adapter.GetRuntime(getContext(), &c.PodmanCommand)
if err != nil {
return errors.Wrapf(err, "error creating libpod runtime")
}
defer runtime.DeferredShutdown(false)
if len(c.Publish) > 0 {
if !c.Infra {
return errors.Errorf("you must have an infra container to publish port bindings to the host")
}
}
if !c.Infra && c.Flag("share").Changed && c.Share != "none" && c.Share != "" {
return errors.Errorf("You cannot share kernel namespaces on the pod level without an infra container")
}
if c.Flag("pod-id-file").Changed {
podIdFile, err = util.OpenExclusiveFile(c.PodIDFile)
if err != nil && os.IsExist(err) {
return errors.Errorf("pod id file exists. Ensure another pod is not using it or delete %s", c.PodIDFile)
}
if err != nil {
return errors.Errorf("error opening pod-id-file %s", c.PodIDFile)
}
defer errorhandling.CloseQuiet(podIdFile)
defer errorhandling.SyncQuiet(podIdFile)
}
labels, err := parse.GetAllLabels(c.LabelFile, c.Labels)
if err != nil {
return errors.Wrapf(err, "unable to process labels")
}
podID, err := runtime.CreatePod(getContext(), c, labels)
if err != nil {
return errors.Wrapf(err, "unable to create pod")
}
if podIdFile != nil {
_, err = podIdFile.WriteString(podID)
if err != nil {
logrus.Error(err)
}
}
fmt.Printf("%s\n", podID)
return nil
}
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