mirror of https://github.com/containers/podman.git
94 lines
2.2 KiB
Go
94 lines
2.2 KiB
Go
package main
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import (
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"os"
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"github.com/containers/libpod/cmd/podman/libpodruntime"
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"github.com/containers/libpod/cmd/podman/shared"
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"github.com/containers/libpod/libpod"
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"github.com/pkg/errors"
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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 (
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pauseFlags = []cli.Flag{
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cli.BoolFlag{
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Name: "all, a",
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Usage: "Pause all running containers",
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},
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}
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pauseDescription = `
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podman pause
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Pauses one or more running containers. The container name or ID can be used.
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`
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pauseCommand = cli.Command{
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Name: "pause",
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Usage: "Pause all the processes in one or more containers",
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Description: pauseDescription,
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Flags: pauseFlags,
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Action: pauseCmd,
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ArgsUsage: "CONTAINER-NAME [CONTAINER-NAME ...]",
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OnUsageError: usageErrorHandler,
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}
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)
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func pauseCmd(c *cli.Context) error {
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var (
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pauseContainers []*libpod.Container
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pauseFuncs []shared.ParallelWorkerInput
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)
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if os.Geteuid() != 0 {
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return errors.New("pause is not supported for rootless containers")
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}
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runtime, err := libpodruntime.GetRuntime(c)
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if err != nil {
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return errors.Wrapf(err, "could not get runtime")
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}
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defer runtime.Shutdown(false)
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args := c.Args()
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if len(args) < 1 && !c.Bool("all") {
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return errors.Errorf("you must provide at least one container name or id")
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}
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if c.Bool("all") {
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containers, err := getAllOrLatestContainers(c, runtime, libpod.ContainerStateRunning, "running")
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if err != nil {
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return err
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}
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pauseContainers = append(pauseContainers, containers...)
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} else {
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for _, arg := range args {
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ctr, err := runtime.LookupContainer(arg)
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if err != nil {
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return err
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}
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pauseContainers = append(pauseContainers, ctr)
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}
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}
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// Now assemble the slice of pauseFuncs
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for _, ctr := range pauseContainers {
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con := ctr
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f := func() error {
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return con.Pause()
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}
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pauseFuncs = append(pauseFuncs, shared.ParallelWorkerInput{
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ContainerID: con.ID(),
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ParallelFunc: f,
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})
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}
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maxWorkers := shared.Parallelize("pause")
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if c.GlobalIsSet("max-workers") {
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maxWorkers = c.GlobalInt("max-workers")
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}
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logrus.Debugf("Setting maximum workers to %d", maxWorkers)
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pauseErrors, errCount := shared.ParallelExecuteWorkerPool(maxWorkers, pauseFuncs)
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return printParallelOutput(pauseErrors, errCount)
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}
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