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package main
import (
"fmt"
"syscall"
"github.com/containers/libpod/cmd/podman/libpodruntime"
"github.com/containers/libpod/cmd/podman/shared"
"github.com/containers/libpod/libpod"
"github.com/containers/libpod/pkg/rootless"
"github.com/docker/docker/pkg/signal"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
"github.com/urfave/cli"
)
var (
killFlags = []cli.Flag{
cli.BoolFlag{
Name: "all, a",
Usage: "Signal all running containers",
},
cli.StringFlag{
Name: "signal, s",
Usage: "Signal to send to the container",
Value: "KILL",
},
LatestFlag,
}
killDescription = "The main process inside each container specified will be sent SIGKILL, or any signal specified with option --signal."
killCommand = cli.Command{
Name: "kill",
Usage: "Kill one or more running containers with a specific signal",
Description: killDescription,
Flags: sortFlags(killFlags),
Action: killCmd,
ArgsUsage: "CONTAINER-NAME [CONTAINER-NAME ...]",
UseShortOptionHandling: true,
OnUsageError: usageErrorHandler,
}
)
// killCmd kills one or more containers with a signal
func killCmd(c *cli.Context) error {
var (
lastError error
killFuncs []shared.ParallelWorkerInput
killSignal uint = uint(syscall.SIGTERM)
)
if err := checkAllAndLatest(c); err != nil {
return err
}
if err := validateFlags(c, killFlags); err != nil {
return err
}
rootless.SetSkipStorageSetup(true)
runtime, err := libpodruntime.GetRuntime(c)
if err != nil {
return errors.Wrapf(err, "could not get runtime")
}
defer runtime.Shutdown(false)
if c.String("signal") != "" {
// Check if the signalString provided by the user is valid
// Invalid signals will return err
sysSignal, err := signal.ParseSignal(c.String("signal"))
if err != nil {
return err
}
killSignal = uint(sysSignal)
}
containers, err := getAllOrLatestContainers(c, runtime, libpod.ContainerStateRunning, "running")
if err != nil {
return err
}
for _, ctr := range containers {
con := ctr
f := func() error {
return con.Kill(killSignal)
}
killFuncs = append(killFuncs, shared.ParallelWorkerInput{
ContainerID: con.ID(),
ParallelFunc: f,
})
}
maxWorkers := shared.Parallelize("kill")
if c.GlobalIsSet("max-workers") {
maxWorkers = c.GlobalInt("max-workers")
}
logrus.Debugf("Setting maximum workers to %d", maxWorkers)
killErrors := shared.ParallelExecuteWorkerPool(maxWorkers, killFuncs)
for cid, result := range killErrors {
if result != nil {
if len(killErrors) > 1 {
fmt.Println(result.Error())
}
lastError = result
continue
}
fmt.Println(cid)
}
return lastError
}
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