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package main
import (
"fmt"
"syscall"
"github.com/containers/libpod/cmd/podman/cliconfig"
"github.com/containers/libpod/cmd/podman/libpodruntime"
"github.com/docker/docker/pkg/signal"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
"github.com/spf13/cobra"
)
var (
podKillCommand cliconfig.PodKillValues
podKillDescription = "The main process of each container inside the specified pod will be sent SIGKILL, or any signal specified with option --signal."
_podKillCommand = &cobra.Command{
Use: "kill",
Short: "Send the specified signal or SIGKILL to containers in pod",
Long: podKillDescription,
RunE: func(cmd *cobra.Command, args []string) error {
podKillCommand.InputArgs = args
podKillCommand.GlobalFlags = MainGlobalOpts
return podKillCmd(&podKillCommand)
},
Example: "[POD_NAME_OR_ID]",
}
)
func init() {
podKillCommand.Command = _podKillCommand
podKillCommand.SetUsageTemplate(UsageTemplate())
flags := podKillCommand.Flags()
flags.BoolVarP(&podKillCommand.All, "all", "a", false, "Kill all containers in all pods")
flags.BoolVarP(&podKillCommand.Latest, "latest", "l", false, "Act on the latest pod podman is aware of")
flags.StringVarP(&podKillCommand.Signal, "signal", "s", "KILL", "Signal to send to the containers in the pod")
}
// podKillCmd kills one or more pods with a signal
func podKillCmd(c *cliconfig.PodKillValues) error {
if err := checkMutuallyExclusiveFlags(&c.PodmanCommand); err != nil {
return err
}
runtime, err := libpodruntime.GetRuntime(&c.PodmanCommand)
if err != nil {
return errors.Wrapf(err, "could not get runtime")
}
defer runtime.Shutdown(false)
var killSignal uint = uint(syscall.SIGTERM)
if c.Signal != "" {
// Check if the signalString provided by the user is valid
// Invalid signals will return err
sysSignal, err := signal.ParseSignal(c.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.PodmanCommand, 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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