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|
package main
import (
"fmt"
"syscall"
"github.com/containers/libpod/cmd/podman/libpodruntime"
"github.com/docker/docker/pkg/signal"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
"github.com/urfave/cli"
)
var (
podKillFlags = []cli.Flag{
cli.BoolFlag{
Name: "all, a",
Usage: "Kill all containers in all pods",
},
cli.StringFlag{
Name: "signal, s",
Usage: "Signal to send to the containers in the pod",
Value: "KILL",
},
LatestPodFlag,
}
podKillDescription = "The main process of each container inside the specified pod will be sent SIGKILL, or any signal specified with option --signal."
podKillCommand = cli.Command{
Name: "kill",
Usage: "Send the specified signal or SIGKILL to containers in pod",
Description: podKillDescription,
Flags: podKillFlags,
Action: podKillCmd,
ArgsUsage: "[POD_NAME_OR_ID]",
UseShortOptionHandling: true,
}
)
// podKillCmd kills one or more pods with a signal
func podKillCmd(c *cli.Context) error {
if err := checkMutuallyExclusiveFlags(c); err != nil {
return err
}
runtime, err := libpodruntime.GetRuntime(c)
if err != nil {
return errors.Wrapf(err, "could not get runtime")
}
defer runtime.Shutdown(false)
var killSignal uint = uint(syscall.SIGTERM)
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)
}
// getPodsFromContext returns an error when a requested pod
// isn't found. The only fatal error scenerio is when there are no pods
// in which case the following loop will be skipped.
pods, lastError := getPodsFromContext(c, runtime)
for _, pod := range pods {
ctr_errs, err := pod.Kill(killSignal)
if ctr_errs != nil {
for ctr, err := range ctr_errs {
if lastError != nil {
logrus.Errorf("%q", lastError)
}
lastError = errors.Wrapf(err, "unable to kill container %q in pod %q", ctr, pod.ID())
}
continue
}
if err != nil {
if lastError != nil {
logrus.Errorf("%q", lastError)
}
lastError = errors.Wrapf(err, "unable to kill pod %q", pod.ID())
continue
}
fmt.Println(pod.ID())
}
return lastError
}
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