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package main
import (
"fmt"
"os"
"time"
"github.com/containers/libpod/cmd/podman/libpodruntime"
"github.com/pkg/errors"
"github.com/urfave/cli"
)
var (
waitDescription = `
podman wait
Block until one or more containers stop and then print their exit codes
`
waitFlags = []cli.Flag{
cli.UintFlag{
Name: "interval, i",
Usage: "Milliseconds to wait before polling for completion",
Value: 250,
},
LatestFlag,
}
waitCommand = cli.Command{
Name: "wait",
Usage: "Block on one or more containers",
Description: waitDescription,
Flags: waitFlags,
Action: waitCmd,
ArgsUsage: "CONTAINER-NAME [CONTAINER-NAME ...]",
OnUsageError: usageErrorHandler,
}
)
func waitCmd(c *cli.Context) error {
args := c.Args()
if len(args) < 1 && !c.Bool("latest") {
return errors.Errorf("you must provide at least one container name or id")
}
runtime, err := libpodruntime.GetRuntime(c)
if err != nil {
return errors.Wrapf(err, "error creating libpod runtime")
}
defer runtime.Shutdown(false)
if err != nil {
return errors.Wrapf(err, "could not get config")
}
var lastError error
if c.Bool("latest") {
latestCtr, err := runtime.GetLatestContainer()
if err != nil {
return errors.Wrapf(err, "unable to wait on latest container")
}
args = append(args, latestCtr.ID())
}
for _, container := range args {
ctr, err := runtime.LookupContainer(container)
if err != nil {
return errors.Wrapf(err, "unable to find container %s", container)
}
if c.Uint("interval") == 0 {
return errors.Errorf("interval must be greater then 0")
}
returnCode, err := ctr.WaitWithInterval(time.Duration(c.Uint("interval")) * time.Millisecond)
if err != nil {
if lastError != nil {
fmt.Fprintln(os.Stderr, lastError)
}
lastError = errors.Wrapf(err, "failed to wait for the container %v", container)
} else {
fmt.Println(returnCode)
}
}
return lastError
}
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