| /* |
| * 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.shardingsphere.elasticjob.lite.internal.sharding; |
| |
| import org.apache.shardingsphere.elasticjob.infra.pojo.JobConfigurationPOJO; |
| import org.apache.shardingsphere.elasticjob.infra.yaml.YamlEngine; |
| import org.apache.shardingsphere.elasticjob.lite.internal.config.ConfigurationNode; |
| import org.apache.shardingsphere.elasticjob.lite.internal.config.ConfigurationService; |
| import org.apache.shardingsphere.elasticjob.lite.internal.instance.InstanceNode; |
| import org.apache.shardingsphere.elasticjob.lite.internal.listener.AbstractJobListener; |
| import org.apache.shardingsphere.elasticjob.lite.internal.listener.AbstractListenerManager; |
| import org.apache.shardingsphere.elasticjob.lite.internal.schedule.JobRegistry; |
| import org.apache.shardingsphere.elasticjob.lite.internal.server.ServerNode; |
| import org.apache.shardingsphere.elasticjob.lite.internal.storage.JobNodePath; |
| import org.apache.shardingsphere.elasticjob.reg.base.CoordinatorRegistryCenter; |
| |
| /** |
| * Sharding listener manager. |
| */ |
| public final class ShardingListenerManager extends AbstractListenerManager { |
| |
| private final String jobName; |
| |
| private final ConfigurationNode configNode; |
| |
| private final InstanceNode instanceNode; |
| |
| private final ServerNode serverNode; |
| |
| private final ShardingService shardingService; |
| |
| private final JobNodePath jobNodePath; |
| |
| private final ConfigurationService configService; |
| |
| public ShardingListenerManager(final CoordinatorRegistryCenter regCenter, final String jobName) { |
| super(regCenter, jobName); |
| this.jobName = jobName; |
| configNode = new ConfigurationNode(jobName); |
| instanceNode = new InstanceNode(jobName); |
| serverNode = new ServerNode(jobName); |
| shardingService = new ShardingService(regCenter, jobName); |
| jobNodePath = new JobNodePath(jobName); |
| configService = new ConfigurationService(regCenter, jobName); |
| } |
| |
| @Override |
| public void start() { |
| addDataListener(new ShardingTotalCountChangedJobListener()); |
| addDataListener(new ListenServersChangedJobListener()); |
| } |
| |
| class ShardingTotalCountChangedJobListener extends AbstractJobListener { |
| |
| @Override |
| protected void dataChanged(final String path, final Type eventType, final String data) { |
| if (configNode.isConfigPath(path) && 0 != JobRegistry.getInstance().getCurrentShardingTotalCount(jobName)) { |
| int newShardingTotalCount = YamlEngine.unmarshal(data, JobConfigurationPOJO.class).toJobConfiguration().getShardingTotalCount(); |
| if (newShardingTotalCount != JobRegistry.getInstance().getCurrentShardingTotalCount(jobName)) { |
| shardingService.setReshardingFlag(); |
| JobRegistry.getInstance().setCurrentShardingTotalCount(jobName, newShardingTotalCount); |
| } |
| } |
| } |
| } |
| |
| class ListenServersChangedJobListener extends AbstractJobListener { |
| |
| @Override |
| protected void dataChanged(final String path, final Type eventType, final String data) { |
| if (!JobRegistry.getInstance().isShutdown(jobName) && (isInstanceChange(eventType, path) || isServerChange(path)) && !(isStaticSharding() && hasShardingInfo())) { |
| shardingService.setReshardingFlag(); |
| } |
| } |
| |
| private boolean isStaticSharding() { |
| return configService.load(true).isStaticSharding(); |
| } |
| |
| private boolean hasShardingInfo() { |
| return !JobRegistry.getInstance().getRegCenter(jobName).getChildrenKeys(jobNodePath.getShardingNodePath()).isEmpty(); |
| } |
| |
| private boolean isInstanceChange(final Type eventType, final String path) { |
| return instanceNode.isInstancePath(path) && Type.NODE_CHANGED != eventType; |
| } |
| |
| private boolean isServerChange(final String path) { |
| return serverNode.isServerPath(path); |
| } |
| } |
| } |