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package main
import (
"os"
"github.com/containers/libpod/cmd/podman/cliconfig"
"github.com/containers/libpod/cmd/podman/libpodruntime"
"github.com/containers/libpod/cmd/podman/shared"
"github.com/containers/libpod/libpod"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
"github.com/spf13/cobra"
)
var (
pauseCommand cliconfig.PauseValues
pauseDescription = `Pauses one or more running containers. The container name or ID can be used.`
_pauseCommand = &cobra.Command{
Use: "pause [flags] CONTAINER [CONTAINER...]",
Short: "Pause all the processes in one or more containers",
Long: pauseDescription,
RunE: func(cmd *cobra.Command, args []string) error {
pauseCommand.InputArgs = args
pauseCommand.GlobalFlags = MainGlobalOpts
return pauseCmd(&pauseCommand)
},
Example: `podman pause mywebserver
podman pause 860a4b23
podman pause -a`,
}
)
func init() {
pauseCommand.Command = _pauseCommand
pauseCommand.SetHelpTemplate(HelpTemplate())
pauseCommand.SetUsageTemplate(UsageTemplate())
flags := pauseCommand.Flags()
flags.BoolVarP(&pauseCommand.All, "all", "a", false, "Pause all running containers")
}
func pauseCmd(c *cliconfig.PauseValues) error {
var (
pauseContainers []*libpod.Container
pauseFuncs []shared.ParallelWorkerInput
)
if os.Geteuid() != 0 {
return errors.New("pause is not supported for rootless containers")
}
runtime, err := libpodruntime.GetRuntime(&c.PodmanCommand)
if err != nil {
return errors.Wrapf(err, "could not get runtime")
}
defer runtime.Shutdown(false)
args := c.InputArgs
if len(args) < 1 && !c.All {
return errors.Errorf("you must provide at least one container name or id")
}
if c.All {
containers, err := getAllOrLatestContainers(&c.PodmanCommand, runtime, libpod.ContainerStateRunning, "running")
if err != nil {
return err
}
pauseContainers = append(pauseContainers, containers...)
} else {
for _, arg := range args {
ctr, err := runtime.LookupContainer(arg)
if err != nil {
return err
}
pauseContainers = append(pauseContainers, ctr)
}
}
// Now assemble the slice of pauseFuncs
for _, ctr := range pauseContainers {
con := ctr
f := func() error {
return con.Pause()
}
pauseFuncs = append(pauseFuncs, shared.ParallelWorkerInput{
ContainerID: con.ID(),
ParallelFunc: f,
})
}
maxWorkers := shared.Parallelize("pause")
if c.GlobalIsSet("max-workers") {
maxWorkers = c.GlobalFlags.MaxWorks
}
logrus.Debugf("Setting maximum workers to %d", maxWorkers)
pauseErrors, errCount := shared.ParallelExecuteWorkerPool(maxWorkers, pauseFuncs)
return printParallelOutput(pauseErrors, errCount)
}
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