| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.ambari.server.events.listeners.services; |
| |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import org.apache.ambari.server.AmbariException; |
| import org.apache.ambari.server.EagerSingleton; |
| import org.apache.ambari.server.events.HostComponentUpdate; |
| import org.apache.ambari.server.events.HostComponentsUpdateEvent; |
| import org.apache.ambari.server.events.MaintenanceModeEvent; |
| import org.apache.ambari.server.events.ServiceUpdateEvent; |
| import org.apache.ambari.server.events.publishers.AmbariEventPublisher; |
| import org.apache.ambari.server.events.publishers.STOMPUpdatePublisher; |
| import org.apache.ambari.server.state.Clusters; |
| import org.apache.ambari.server.state.MaintenanceState; |
| |
| import com.google.common.eventbus.Subscribe; |
| import com.google.inject.Inject; |
| import com.google.inject.Provider; |
| import com.google.inject.Singleton; |
| |
| @Singleton |
| @EagerSingleton |
| public class ServiceUpdateListener { |
| |
| private STOMPUpdatePublisher STOMPUpdatePublisher; |
| |
| @Inject |
| private Provider<Clusters> m_clusters; |
| |
| @Inject |
| public ServiceUpdateListener(STOMPUpdatePublisher STOMPUpdatePublisher, AmbariEventPublisher ambariEventPublisher) { |
| STOMPUpdatePublisher.registerAPI(this); |
| ambariEventPublisher.register(this); |
| |
| this.STOMPUpdatePublisher = STOMPUpdatePublisher; |
| } |
| |
| @Subscribe |
| public void onHostComponentUpdate(HostComponentsUpdateEvent event) throws AmbariException { |
| Map<Long, Set<String>> clustersServices = new HashMap<>(); |
| for (HostComponentUpdate hostComponentUpdate : event.getHostComponentUpdates()) { |
| Long clusterId = hostComponentUpdate.getClusterId(); |
| String serviceName = hostComponentUpdate.getServiceName(); |
| clustersServices.computeIfAbsent(clusterId, c -> new HashSet<>()).add(serviceName); |
| } |
| for (Map.Entry<Long, Set<String>> clusterServices : clustersServices.entrySet()) { |
| Long clusterId = clusterServices.getKey(); |
| String clusterName = m_clusters.get().getClusterById(clusterId).getClusterName(); |
| for (String serviceName : clusterServices.getValue()) { |
| STOMPUpdatePublisher.publish(new ServiceUpdateEvent(clusterName, null, serviceName, null, |
| true)); |
| } |
| } |
| } |
| |
| @Subscribe |
| public void onMaintenanceStateUpdate(MaintenanceModeEvent event) throws AmbariException { |
| if (event.getService() == null) { |
| return; |
| } |
| Long clusterId = event.getClusterId(); |
| String clusterName = m_clusters.get().getClusterById(clusterId).getClusterName(); |
| String serviceName = event.getService().getName(); |
| |
| MaintenanceState maintenanceState = event.getMaintenanceState(); |
| |
| STOMPUpdatePublisher.publish(new ServiceUpdateEvent(clusterName, maintenanceState, serviceName, null, |
| false)); |
| } |
| } |