| 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 { |
| 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") |
| } |
| } |