| /* |
| * 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.hazelcast; |
| |
| import java.util.Collection; |
| import java.util.List; |
| import java.util.concurrent.atomic.AtomicInteger; |
| |
| import org.apache.brooklyn.util.text.Identifiers; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import com.google.common.collect.Lists; |
| import org.apache.brooklyn.api.entity.Entity; |
| |
| import org.apache.brooklyn.entity.group.AbstractMembershipTrackingPolicy; |
| import org.apache.brooklyn.entity.group.DynamicClusterImpl; |
| 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.core.entity.Attributes; |
| import org.apache.brooklyn.core.entity.EntityInternal; |
| import org.apache.brooklyn.util.text.Strings; |
| |
| public class HazelcastClusterImpl extends DynamicClusterImpl implements HazelcastCluster { |
| private static final Logger LOG = LoggerFactory.getLogger(HazelcastClusterImpl.class); |
| |
| private static final AtomicInteger nextMemberId = new AtomicInteger(0); |
| |
| @Override |
| protected EntitySpec<?> getMemberSpec() { |
| EntitySpec<?> spec = EntitySpec.create(config().get(HazelcastCluster.MEMBER_SPEC)); |
| |
| spec.configure(HazelcastNode.NODE_CLUSTER_NAME, config().get(HazelcastCluster.CLUSTER_NAME)); |
| spec.configure(HazelcastNode.GROUP_NAME, config().get(HazelcastCluster.CLUSTER_NAME)); |
| |
| if (LOG.isInfoEnabled()) { |
| LOG.info("Cluster name : {} : used as a group name", getConfig(HazelcastNode.GROUP_NAME)); |
| } |
| |
| spec.configure(HazelcastNode.GROUP_PASSWORD, getClusterPassword()); |
| |
| return spec; |
| } |
| |
| @Override |
| public void init() { |
| super.init(); |
| |
| String clusterPassword = getClusterPassword(); |
| |
| if (Strings.isBlank(clusterPassword)) { |
| if (LOG.isInfoEnabled()) { |
| LOG.info(this + " cluster password not provided for " + CLUSTER_PASSWORD.getName() + " : generating random password"); |
| } |
| config().set(CLUSTER_PASSWORD, Identifiers.makeRandomPassword(12)); |
| } |
| |
| policies().add(PolicySpec.create(MemberTrackingPolicy.class) |
| .displayName("Hazelcast members tracker") |
| .configure("group", this)); |
| } |
| |
| public static class MemberTrackingPolicy extends AbstractMembershipTrackingPolicy { |
| @Override |
| protected void onEntityChange(Entity member) { |
| } |
| |
| @Override |
| protected void onEntityAdded(Entity member) { |
| if (member.getAttribute(HazelcastNode.NODE_NAME) == null) { |
| ((EntityInternal) member).sensors().set(HazelcastNode.NODE_NAME, "hazelcast-" + nextMemberId.incrementAndGet()); |
| if (LOG.isInfoEnabled()) { |
| LOG.info("Node {} added to the cluster", member); |
| } |
| } |
| } |
| |
| @Override |
| protected void onEntityRemoved(Entity member) { |
| } |
| }; |
| |
| @Override |
| public String getClusterName() { |
| return getConfig(CLUSTER_NAME); |
| } |
| |
| @Override |
| public String getClusterPassword() { |
| return getConfig(CLUSTER_PASSWORD); |
| } |
| |
| @Override |
| protected void initEnrichers() { |
| super.initEnrichers(); |
| |
| } |
| |
| @Override |
| public void start(Collection<? extends Location> locations) { |
| super.start(locations); |
| |
| List<String> clusterNodes = Lists.newArrayList(); |
| for (Entity member : getMembers()) { |
| clusterNodes.add(member.getAttribute(Attributes.ADDRESS)); |
| } |
| sensors().set(PUBLIC_CLUSTER_NODES, clusterNodes); |
| } |
| } |