Exemplo n.º 1
0
func node_lost_handler(event models.AppEvent, ctxt string) (models.AppEvent, error) {
	//worry about the node only if the node in active state
	state, err := skyringutils.GetNodeStateById(ctxt, event.NodeId)
	if state == models.NODE_STATE_ACTIVE && err == nil {
		if err := skyringutils.Update_node_status_byId(ctxt, event.NodeId, models.NODE_STATUS_ERROR); err != nil {
			return event, err
		}
	}
	event.Name = skyring.EventTypes["NODE_STATE_CHANGED"]
	event.Message = fmt.Sprintf("Host: %s lost contact", event.NodeName)
	event.EntityId = event.NodeId
	event.Severity = models.ALARM_STATUS_MAJOR
	event.NotificationEntity = models.NOTIFICATION_ENTITY_HOST
	event.Notify = true

	util.AppendServiceToNode(bson.M{"nodeid": event.NodeId}, models.SkyringServices[1], models.STATUS_DOWN, ctxt)

	if err := update_alarm_count(event, ctxt); err != nil {
		logger.Get().Error("%s-could not update alarm"+
			" count for event: %s", ctxt, event.EventId.String())
		return event, err
	}
	app := skyring.GetApp()
	if err := app.RouteProviderEvents(ctxt, event); err != nil {
		logger.Get().Error("%s-Event:%s could not be handled for node: %s. error: %v", ctxt, event.Name, event.NodeName, err)
	}
	return event, nil
}
Exemplo n.º 2
0
func handle_node_start_event(node string) error {
	sessionCopy := db.GetDatastore().Copy()
	defer sessionCopy.Close()
	coll := sessionCopy.DB(conf.SystemConfig.DBConfig.Database).C(models.COLL_NAME_STORAGE_NODES)

	var storage_node models.Node

	_ = coll.Find(bson.M{"hostname": node}).One(&storage_node)
	if storage_node.State != models.NODE_STATE_INITIALIZING {
		logger.Get().Warning(fmt.Sprintf("Node with name: %s not in activating state to update other details", node))
		return nil
	}
	asyncTask := func(t *task.Task) {
		t.UpdateStatus("started the task for InitializeNode: %s", t.ID)
		// Process the request
		if err := initializeStorageNode(node, t); err != nil {
			t.UpdateStatus("Failed")
			t.Done(models.TASK_STATUS_FAILURE)
		} else {
			t.UpdateStatus("Success")
			t.Done(models.TASK_STATUS_SUCCESS)
		}
	}
	if taskId, err := skyring.GetApp().GetTaskManager().Run(fmt.Sprintf("Initialize Node: %s", node), asyncTask, nil, nil, nil); err != nil {
		logger.Get().Error("Unable to create the task for Initialize Node: %s. error: %v", node, err)
	} else {
		logger.Get().Debug("Task created for initialize node. Task id: %s", taskId.String())
	}
	return nil
}
Exemplo n.º 3
0
func RouteEvent(event models.NodeEvent) {
	var e models.Event
	e.Timestamp = event.Timestamp
	e.Tag = event.Tag
	e.Tags = event.Tags
	e.Message = event.Message
	e.Severity = event.Severity
	eventId, err := uuid.New()
	if err != nil {
		logger.Get().Error("Uuid generation for the event failed for node: %s. error: %v", event.Node, err)
		return
	}

	e.EventId = *eventId

	// querying DB to get node ID and Cluster ID for the event
	sessionCopy := db.GetDatastore().Copy()
	defer sessionCopy.Close()
	var node models.Node
	coll := sessionCopy.DB(conf.SystemConfig.DBConfig.Database).C(models.COLL_NAME_STORAGE_NODES)
	if err := coll.Find(bson.M{"hostname": event.Node}).One(&node); err != nil {
		logger.Get().Error("Node information read from DB failed for node: %s. error: %v", event.Node, err)
		return
	}

	// Push the event to DB only if the node is managed
	if node.Hostname == "" || !node.Enabled {
		return
	}
	e.ClusterId = node.ClusterId
	e.NodeId = node.NodeId

	// Invoking the event handler
	for tag, handler := range handlermap {
		if match, err := filepath.Match(tag, e.Tag); err == nil {
			if match {
				if err := handler.(func(models.Event) error)(e); err != nil {
					logger.Get().Error("Event Handling Failed for event for node: %s. error: %v", node.Hostname, err)
					return
				}
				if err := Persist_event(e); err != nil {
					logger.Get().Error("Could not persist the event to DB for node: %s. error: %v", node.Hostname, err)
					return
				} else {
					// For upcoming any new event , broadcasting to all connected clients
					eventObj, err := json.Marshal(e)
					if err != nil {
						logger.Get().Error("Error marshalling the event data for node: %s. error: %v", node.Hostname, err)
					}
					GetBroadcaster().chBroadcast <- string(eventObj)
					return
				}
			}
		} else {
			logger.Get().Error("Error while maping handler for event for node: %s. error: %v", node.Hostname, err)
			return
		}
	}

	// Handle Provider specific events
	app := skyring.GetApp()
	if err := app.RouteProviderEvents(e); err != nil {
		logger.Get().Error("Event:%s could not be handled for node: %s. error: %v", e.Tag, node.Hostname, err)
	}

	return
}
Exemplo n.º 4
0
func drive_add_handler(event models.AppEvent, ctxt string) (models.AppEvent, error) {
	sessionCopy := db.GetDatastore().Copy()
	defer sessionCopy.Close()
	var node models.Node
	coll := sessionCopy.DB(conf.SystemConfig.DBConfig.Database).C(models.COLL_NAME_STORAGE_NODES)
	if err := coll.Find(bson.M{"nodeid": event.NodeId}).One(&node); err != nil {
		logger.Get().Error("%s-Node information read from DB failed for node: %s. error: %v", ctxt, event.NodeId, err)
		return event, err
	}
	if node.State != models.NODE_STATE_ACTIVE {
		return event, nil
	}
	existing_disks := node.StorageDisks
	sProfiles, err := skyring.GetDbProvider().StorageProfileInterface().StorageProfiles(ctxt, nil, models.QueryOps{})
	if err != nil {
		logger.Get().Error("%s-Unable to get the storage profiles. err:%v", ctxt, err)
		return event, err
	}

	// sync the nodes to get new disks
	if ok, err := skyring.GetCoreNodeManager().SyncStorageDisks(node.Hostname, sProfiles, ctxt); err != nil || !ok {
		logger.Get().Error("%s-Failed to sync disk for host: %s Error: %v", ctxt, node.Hostname, err)
		return event, err
	}

	// get the list of disks after syncing.
	if err := coll.Find(bson.M{"nodeid": event.NodeId}).One(&node); err != nil {
		logger.Get().Error("%s-Node information read from DB failed for node: %s. error: %v", ctxt, event.NodeId, err)
		return event, err
	}
	var cluster_nodes []models.ClusterNode
	var cluster_node models.ClusterNode
	cluster_node.NodeId = event.NodeId.String()
	cluster_node.NodeType = []string{models.NODE_TYPE_OSD}
	var exists bool
	for _, disk := range node.StorageDisks {
		exists = false
		for _, existing_disk := range existing_disks {
			if disk.DevName == existing_disk.DevName {
				exists = true
				break
			}
		}
		if !exists && !disk.Used && disk.Type == "disk" {
			cluster_node.Devices = append(cluster_node.Devices, models.ClusterNodeDevice{Name: disk.DevName, FSType: "xfs"})
			event.EntityId = disk.DiskId
			event.Tags["DevName"] = disk.DevName
			event.Tags["size"] = strconv.FormatFloat(disk.Size, 'E', -1, 64)
			event.Tags["Type"] = disk.Type
		}
	}

	// adding the details for event

	event.Name = skyring.EventTypes["DRIVE_ADD"]
	event.NotificationEntity = models.NOTIFICATION_ENTITY_HOST
	event.Message = fmt.Sprintf("New Storage Drive: %s added to Host:%s", event.Tags["DevName"], node.Hostname)
	event.Severity = models.ALARM_STATUS_CLEARED
	event.Notify = false

	c := sessionCopy.DB(conf.SystemConfig.DBConfig.Database).C(models.COLL_NAME_STORAGE_CLUSTERS)
	var cluster models.Cluster
	if err := c.Find(bson.M{"clusterid": event.ClusterId}).One(&cluster); err != nil {
		logger.Get().Error("%s-Cluster information read from DB failed for Cluster: %s. error: %v", ctxt, event.ClusterId, err)
		return event, nil
	}

	// check if cluster is in managed/un-managed state
	ok, err := skyring.ClusterUnmanaged(event.ClusterId)
	if err != nil {
		logger.Get().Warning("%s-Error checking managed state of cluster: %v. error: %v", ctxt, event.ClusterId, err)
		return event, err
	}
	if ok {
		logger.Get().Error("%s-Cluster: %v is in un-managed state", ctxt, event.ClusterId)
		return event, err
	}

	vars := map[string]string{"cluster-id": event.ClusterId.String()}
	cluster_nodes = append(cluster_nodes, cluster_node)
	body, err := json.Marshal(cluster_nodes)
	if err != nil {
		logger.Get().Error(fmt.Sprintf("%s-Error forming request body. error: %v", ctxt, err))
		return event, nil
	}

	// lock the node for expanding

	var nodes models.Nodes
	if err := coll.Find(bson.M{"clusterid": event.ClusterId}).All(&nodes); err != nil {
		logger.Get().Error("%s-Node information read from DB failed . error: %v", ctxt, err)
		return event, nil
	}

	// check if autoExpand is enabled or not
	if !cluster.AutoExpand {
		return event, nil
	}

	// Expand cluster
	var result models.RpcResponse
	var providerTaskId *uuid.UUID
	asyncTask := func(t *task.Task) {
		sessionCopy := db.GetDatastore().Copy()
		defer sessionCopy.Close()
		for {
			select {
			case <-t.StopCh:
				return
			default:
				t.UpdateStatus("Started task for cluster expansion: %v", t.ID)
				appLock, err := skyring.LockNodes(ctxt, nodes, "Expand_Cluster")
				if err != nil {
					util.FailTask("Failed to acquire lock", fmt.Errorf("%s-%v", ctxt, err), t)
					return
				}
				defer skyring.GetApp().GetLockManager().ReleaseLock(ctxt, *appLock)

				provider := skyring.GetApp().GetProviderFromClusterId(ctxt, node.ClusterId)
				if provider == nil {
					util.FailTask("", errors.New(fmt.Sprintf("%s-Error etting provider for cluster: %v", ctxt, event.ClusterId)), t)
					return
				}
				err = provider.Client.Call(fmt.Sprintf("%s.%s",
					provider.Name, "ExpandCluster"),
					models.RpcRequest{RpcRequestVars: vars, RpcRequestData: body, RpcRequestContext: ctxt},
					&result)
				if err != nil || (result.Status.StatusCode != http.StatusOK && result.Status.StatusCode != http.StatusAccepted) {
					util.FailTask(fmt.Sprintf("Error expanding cluster: %v", event.ClusterId), fmt.Errorf("%s-%v", ctxt, err), t)
					return
				}
				// Update the master task id
				providerTaskId, err = uuid.Parse(result.Data.RequestId)
				if err != nil {
					util.FailTask(fmt.Sprintf("Error parsing provider task id while expand cluster: %v", event.ClusterId), fmt.Errorf("%s-%v", ctxt, err), t)
					return
				}
				t.UpdateStatus(fmt.Sprintf("Started provider task: %v", *providerTaskId))
				if ok, err := t.AddSubTask(*providerTaskId); !ok || err != nil {
					util.FailTask(fmt.Sprintf("Error adding sub task while expand cluster: %v", event.ClusterId), fmt.Errorf("%s-%v", ctxt, err), t)
					return
				}

				// Check for provider task to complete and update the disk info
				for {
					time.Sleep(2 * time.Second)
					coll := sessionCopy.DB(conf.SystemConfig.DBConfig.Database).C(models.COLL_NAME_TASKS)
					var providerTask models.AppTask
					if err := coll.Find(bson.M{"id": *providerTaskId}).One(&providerTask); err != nil {
						util.FailTask(fmt.Sprintf("Error getting sub task status while expand cluster: %v", event.ClusterId), fmt.Errorf("%s-%v", ctxt, err), t)
						return
					}
					if providerTask.Completed {
						if providerTask.Status == models.TASK_STATUS_SUCCESS {
							t.UpdateStatus("Starting disk sync")
							if ok, err := skyring.GetCoreNodeManager().SyncStorageDisks(node.Hostname, sProfiles, ctxt); err != nil || !ok {
								logger.Get().Error("%s-Failed to sync disk for host: %s Error: %v", ctxt, node.Hostname, err)
								return
							}
							go skyring.ComputeSystemSummary(make(map[string]interface{}))
							t.UpdateStatus("Success")
							t.Done(models.TASK_STATUS_SUCCESS)

						} else {
							logger.Get().Error("%s-Failed to expand the cluster %s", ctxt, event.ClusterId)
							t.UpdateStatus("Failed")
							t.Done(models.TASK_STATUS_FAILURE)
						}
						break
					}
				}
				return

			}
		}
	}

	if taskId, err := skyring.GetApp().GetTaskManager().Run(
		models.ENGINE_NAME,
		fmt.Sprintf("Expand Cluster: %s", event.ClusterId.String()),
		asyncTask,
		nil,
		nil,
		nil); err != nil {
		logger.Get().Error("%s-Unable to create task to expand cluster: %v. error: %v", ctxt, event.ClusterId, err)
		return event, nil
	} else {
		logger.Get().Debug("%s-Task Created: %v to expand cluster: %v", ctxt, taskId, event.ClusterId)
		return event, nil
	}

}