Example #1
0
func initiailizeMonitoring() {
	defer log.Infoln("Initializing autonomic monitoring")
	ch_aut_err := chn.GetAutonomicErrChannel()
	enableLogReading = cfg.GetAgentAutonomic().EnableLogReading
	mtr.Initialize(srv.List())

	// Start log reader if needed
	if enableLogReading {
		lgr.StartLogReader()
		log.WithField("logreader", enableLogReading).Debugln("Log reading is enabled")
	}

	// Get the list of containers (running or not) to monitor
	containers, err := container.Docker().Client.ListContainers(true, false, "")
	if err != nil {
		log.WithField("err", err).Debugln("Error monitoring containers")
		ch_aut_err <- err
	}

	// Start the monitor for each configured service
	for _, c := range containers {
		info, _ := container.Docker().Client.InspectContainer(c.Id)
		status := getContainerStatus(info)
		service, err := srv.GetServiceByImage(c.Image)
		if err != nil {
			log.WithFields(log.Fields{
				"err":   err,
				"image": c.Image,
			}).Warningln("Error monitoring service")
		} else {
			e := evt.Event{
				Service:  service.Name,
				Image:    c.Image,
				Instance: c.Id,
				Status:   status,
			}

			evt.HandleCreateEvent(e)
			evt.HanldeStartEvent(e)
			mtr.AddInstance(c.Id)
			if _, ok := instBuffer[c.Id]; !ok {
				instBuffer[c.Id] = instanceMetricBuffer{
					cpuInst: utils.BuildBuffer(c_B_SIZE),
					cpuSys:  utils.BuildBuffer(c_B_SIZE),
				}
			}
			container.Docker().Client.StartMonitorStats(c.Id, statCallBack, ch_mnt_stats_err)
			if status == enum.PENDING && enableLogReading {
				startMonitorLog(c.Id)
			}
		}
	}
}
Example #2
0
// Events are: attach, commit, copy, create, destroy, die, exec_create, exec_start, export, kill, oom, pause, rename, resize, restart, start, stop, top, unpause, update
func eventCallback(event *dockerclient.Event, ec chan error, args ...interface{}) {
	log.Debugln("Received event")
	// By now we do not handle events with type != container
	if event.Type != "container" {
		log.WithField("type", event.Type).Debugln("Received event with type different from 'container'")
		return
	}

	service, err := srv.GetServiceByImage(event.From)
	if err != nil {
		log.WithFields(log.Fields{
			"err":   err,
			"event": event,
		}).Warnln("Cannot handle event")
		return
	}

	e := evt.Event{
		Service:  service.Name,
		Image:    event.From,
		Instance: event.ID,
		Type:     event.Type,
	}

	switch event.Status {
	case "create":
		log.WithField("image", e.Image).Debugln("Received create signal")
		evt.HandleCreateEvent(e)
		container.Docker().Client.StartMonitorStats(e.Instance, statCallBack, ch_mnt_stats_err)
	case "start":
		log.WithField("image", e.Image).Debugln("Received start signal")
		if _, ok := instBuffer[e.Instance]; !ok {
			instBuffer[e.Instance] = instanceMetricBuffer{
				cpuInst: utils.BuildBuffer(c_B_SIZE),
				cpuSys:  utils.BuildBuffer(c_B_SIZE),
			}
		}
		e.Status = enum.PENDING
		evt.HanldeStartEvent(e)
		mtr.AddInstance(e.Instance)
		if enableLogReading {
			startMonitorLog(event.ID)
		}
	case "stop":
		log.WithField("image", e.Image).Debugln("Received stop signal")
	case "kill":
		log.WithField("image", e.Image).Debugln("Received kill signal")
	case "die":
		log.WithField("image", e.Image).Debugln("Received die signal")
		delete(instBuffer, e.Instance)
		mtr.RemoveInstance(e.Instance)
		evt.HandleStopEvent(e)
	case "destroy":
		log.WithField("id", e.Instance).Debugln("Received destroy signal")
		evt.HandleRemoveEvent(e)
	default:
		log.WithFields(log.Fields{
			"err":   "event not handled",
			"event": event.Status,
			"image": event.From,
		}).Debugln("Received unknown signal")
	}

	log.Debugln("Event handled")

}