package daemon import ( "errors" "fmt" "runtime" "strconv" "time" "github.com/Sirupsen/logrus" "github.com/docker/docker/api/types" "github.com/docker/docker/container" "github.com/docker/docker/libcontainerd" "github.com/docker/docker/restartmanager" ) func (daemon *Daemon) setStateCounter(c *container.Container) { switch c.StateString() { case "paused": stateCtr.set(c.ID, "paused") case "running": stateCtr.set(c.ID, "running") default: stateCtr.set(c.ID, "stopped") } } // StateChanged updates daemon state changes from containerd func (daemon *Daemon) StateChanged(id string, e libcontainerd.StateInfo) error { c := daemon.containers.Get(id) if c == nil { return fmt.Errorf("no such container: %s", id) } switch e.State { case libcontainerd.StateOOM: // StateOOM is Linux specific and should never be hit on Windows if runtime.GOOS == "windows" { return errors.New("Received StateOOM from libcontainerd on Windows. This should never happen.") } daemon.updateHealthMonitor(c) daemon.LogContainerEvent(c, "oom") case libcontainerd.StateExit: c.Lock() c.StreamConfig.Wait() c.Reset(false) // If daemon is being shutdown, don't let the container restart restart, wait, err := c.RestartManager().ShouldRestart(e.ExitCode, daemon.IsShuttingDown() || c.HasBeenManuallyStopped, time.Since(c.StartedAt)) if err == nil && restart { c.RestartCount++ c.SetRestarting(platformConstructExitStatus(e)) } else { c.SetStopped(platformConstructExitStatus(e)) defer daemon.autoRemove(c) } // cancel healthcheck here, they will be automatically // restarted if/when the container is started again daemon.stopHealthchecks(c) attributes := map[string]string{ "exitCode": strconv.Itoa(int(e.ExitCode)), } daemon.LogContainerEventWithAttributes(c, "die", attributes) daemon.Cleanup(c) if err == nil && restart { go func() { err := <-wait if err == nil { // daemon.netController is initialized when daemon is restoring containers. // But containerStart will use daemon.netController segment. // So to avoid panic at startup process, here must wait util daemon restore done. daemon.waitForStartupDone() if err = daemon.containerStart(c, "", "", false); err != nil { logrus.Debugf("failed to restart container: %+v", err) } } if err != nil { c.SetStopped(platformConstructExitStatus(e)) defer daemon.autoRemove(c) if err != restartmanager.ErrRestartCanceled { logrus.Errorf("restartmanger wait error: %+v", err) } } }() } daemon.setStateCounter(c) defer c.Unlock() if err := c.ToDisk(); err != nil { return err } return daemon.postRunProcessing(c, e) case libcontainerd.StateExitProcess: if execConfig := c.ExecCommands.Get(e.ProcessID); execConfig != nil { ec := int(e.ExitCode) execConfig.Lock() defer execConfig.Unlock() execConfig.ExitCode = &ec execConfig.Running = false execConfig.StreamConfig.Wait() if err := execConfig.CloseStreams(); err != nil { logrus.Errorf("failed to cleanup exec %s streams: %s", c.ID, err) } // remove the exec command from the container's store only and not the // daemon's store so that the exec command can be inspected. c.ExecCommands.Delete(execConfig.ID) } else { logrus.Warnf("Ignoring StateExitProcess for %v but no exec command found", e) } case libcontainerd.StateStart, libcontainerd.StateRestore: // Container is already locked in this case c.SetRunning(int(e.Pid), e.State == libcontainerd.StateStart) c.HasBeenManuallyStopped = false c.HasBeenStartedBefore = true daemon.setStateCounter(c) if err := c.ToDisk(); err != nil { c.Reset(false) return err } daemon.initHealthMonitor(c) daemon.LogContainerEvent(c, "start") case libcontainerd.StatePause: // Container is already locked in this case c.Paused = true daemon.setStateCounter(c) if err := c.ToDisk(); err != nil { return err } daemon.updateHealthMonitor(c) daemon.LogContainerEvent(c, "pause") case libcontainerd.StateResume: // Container is already locked in this case c.Paused = false daemon.setStateCounter(c) if err := c.ToDisk(); err != nil { return err } daemon.updateHealthMonitor(c) daemon.LogContainerEvent(c, "unpause") } return nil } func (daemon *Daemon) autoRemove(c *container.Container) { c.Lock() ar := c.HostConfig.AutoRemove c.Unlock() if !ar { return } var err error if err = daemon.ContainerRm(c.ID, &types.ContainerRmConfig{ForceRemove: true, RemoveVolume: true}); err == nil { return } if c := daemon.containers.Get(c.ID); c == nil { return } if err != nil { logrus.WithError(err).WithField("container", c.ID).Error("error removing container") } }