92 lines
2.3 KiB
Go
92 lines
2.3 KiB
Go
package main
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import (
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"fmt"
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"os"
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"time"
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"github.com/containers/libpod/cmd/podman/cliconfig"
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"github.com/containers/libpod/cmd/podman/libpodruntime"
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"github.com/pkg/errors"
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"github.com/spf13/cobra"
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)
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var (
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waitCommand cliconfig.WaitValues
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waitDescription = `
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podman wait
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Block until one or more containers stop and then print their exit codes
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`
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_waitCommand = &cobra.Command{
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Use: "wait",
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Short: "Block on one or more containers",
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Long: waitDescription,
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RunE: func(cmd *cobra.Command, args []string) error {
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waitCommand.InputArgs = args
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waitCommand.GlobalFlags = MainGlobalOpts
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return waitCmd(&waitCommand)
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},
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Example: `podman wait --latest
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podman wait --interval 5000 ctrID
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podman wait ctrID1 ctrID2`,
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}
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)
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func init() {
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waitCommand.Command = _waitCommand
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waitCommand.SetUsageTemplate(UsageTemplate())
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flags := waitCommand.Flags()
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flags.UintVarP(&waitCommand.Interval, "interval", "i", 250, "Milliseconds to wait before polling for completion")
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flags.BoolVarP(&waitCommand.Latest, "latest", "l", false, "Act on the latest container podman is aware of")
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markFlagHiddenForRemoteClient("latest", flags)
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}
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func waitCmd(c *cliconfig.WaitValues) error {
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args := c.InputArgs
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if len(args) < 1 && !c.Latest {
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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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runtime, err := libpodruntime.GetRuntime(&c.PodmanCommand)
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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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defer runtime.Shutdown(false)
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if err != nil {
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return errors.Wrapf(err, "could not get config")
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}
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var lastError error
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if c.Latest {
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latestCtr, err := runtime.GetLatestContainer()
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if err != nil {
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return errors.Wrapf(err, "unable to wait on latest container")
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}
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args = append(args, latestCtr.ID())
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}
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for _, container := range args {
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ctr, err := runtime.LookupContainer(container)
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if err != nil {
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return errors.Wrapf(err, "unable to find container %s", container)
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}
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if c.Interval == 0 {
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return errors.Errorf("interval must be greater then 0")
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}
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returnCode, err := ctr.WaitWithInterval(time.Duration(c.Interval) * time.Millisecond)
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if err != nil {
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if lastError != nil {
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fmt.Fprintln(os.Stderr, lastError)
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}
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lastError = errors.Wrapf(err, "failed to wait for the container %v", container)
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} else {
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fmt.Println(returnCode)
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}
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}
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return lastError
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}
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