| /* |
| * 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.brooklyn.entity.nosql.mongodb.sharding; |
| |
| import java.util.Collection; |
| |
| import org.apache.brooklyn.api.entity.Entity; |
| import org.apache.brooklyn.api.entity.EntitySpec; |
| import org.apache.brooklyn.api.location.Location; |
| import org.apache.brooklyn.api.policy.PolicySpec; |
| import org.apache.brooklyn.api.sensor.SensorEvent; |
| import org.apache.brooklyn.api.sensor.SensorEventListener; |
| import org.apache.brooklyn.core.entity.EntityPredicates; |
| import org.apache.brooklyn.core.entity.trait.Startable; |
| import org.apache.brooklyn.entity.group.AbstractMembershipTrackingPolicy; |
| import org.apache.brooklyn.entity.group.DynamicClusterImpl; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import com.google.common.collect.ImmutableList; |
| import com.google.common.collect.Iterables; |
| |
| public class MongoDBRouterClusterImpl extends DynamicClusterImpl implements MongoDBRouterCluster { |
| |
| private static final Logger log = LoggerFactory.getLogger(MongoDBRouterClusterImpl.class); |
| |
| @Override |
| public void init() { |
| super.init(); |
| subscriptions().subscribeToChildren(this, MongoDBRouter.RUNNING, new SensorEventListener<Boolean>() { |
| @Override public void onEvent(SensorEvent<Boolean> event) { |
| setAnyRouter(); |
| } |
| }); |
| } |
| |
| @Override |
| public void start(Collection<? extends Location> locations) { |
| super.start(locations); |
| policies().add(PolicySpec.create(MemberTrackingPolicy.class) |
| .displayName("Router cluster membership tracker") |
| .configure("group", this)); |
| } |
| |
| public static class MemberTrackingPolicy extends AbstractMembershipTrackingPolicy { |
| @Override protected void onEntityEvent(EventType type, Entity member) { |
| defaultHighlightAction(type, entity); |
| ((MongoDBRouterClusterImpl)super.entity).setAnyRouter(); |
| } |
| @Override protected void onEntityRemoved(Entity member) { |
| // TODO shouldn't be invoked - remove |
| log.warn("Removal handler should be hidden by event handler", new Throwable("Trace for unexpected mongo node handler")); |
| ((MongoDBRouterClusterImpl)super.entity).setAnyRouter(); |
| } |
| @Override protected void onEntityChange(Entity member) { |
| // TODO shouldn't be invoked - remove |
| log.warn("Change handler should be hidden by event handler", new Throwable("Trace for unexpected mongo node handler")); |
| ((MongoDBRouterClusterImpl)super.entity).setAnyRouter(); |
| } |
| } |
| |
| protected void setAnyRouter() { |
| sensors().set(MongoDBRouterCluster.ANY_ROUTER, Iterables.tryFind(getRouters(), |
| EntityPredicates.attributeEqualTo(Startable.SERVICE_UP, true)).orNull()); |
| |
| sensors().set( |
| MongoDBRouterCluster.ANY_RUNNING_ROUTER, |
| Iterables.tryFind(getRouters(), EntityPredicates.attributeEqualTo(MongoDBRouter.RUNNING, true)) |
| .orNull()); |
| } |
| |
| @Override |
| public Collection<MongoDBRouter> getRouters() { |
| return ImmutableList.copyOf(Iterables.filter(getMembers(), MongoDBRouter.class)); |
| } |
| |
| @Override |
| protected EntitySpec<?> getMemberSpec() { |
| if (super.getMemberSpec() != null) |
| return super.getMemberSpec(); |
| return EntitySpec.create(MongoDBRouter.class); |
| } |
| |
| @Override |
| public MongoDBRouter getAnyRouter() { |
| return getAttribute(MongoDBRouterCluster.ANY_ROUTER); |
| } |
| |
| @Override |
| public MongoDBRouter getAnyRunningRouter() { |
| return getAttribute(MongoDBRouterCluster.ANY_RUNNING_ROUTER); |
| } |
| |
| } |