| /* |
| * Copyright 1999-2015 dangdang.com. |
| * <p> |
| * Licensed 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. |
| * </p> |
| */ |
| |
| package io.elasticjob.cloud.event; |
| |
| import com.google.common.eventbus.AsyncEventBus; |
| import com.google.common.eventbus.EventBus; |
| import io.elasticjob.cloud.util.concurrent.ExecutorServiceObject; |
| import lombok.extern.slf4j.Slf4j; |
| |
| /** |
| * 运行痕迹事件总线. |
| * |
| * @author zhangliang |
| * @author caohao |
| */ |
| @Slf4j |
| public final class JobEventBus { |
| |
| private final JobEventConfiguration jobEventConfig; |
| |
| private final ExecutorServiceObject executorServiceObject; |
| |
| private final EventBus eventBus; |
| |
| private boolean isRegistered; |
| |
| public JobEventBus() { |
| jobEventConfig = null; |
| executorServiceObject = null; |
| eventBus = null; |
| } |
| |
| public JobEventBus(final JobEventConfiguration jobEventConfig) { |
| this.jobEventConfig = jobEventConfig; |
| executorServiceObject = new ExecutorServiceObject("job-event", Runtime.getRuntime().availableProcessors() * 2); |
| eventBus = new AsyncEventBus(executorServiceObject.createExecutorService()); |
| register(); |
| } |
| |
| private void register() { |
| try { |
| eventBus.register(jobEventConfig.createJobEventListener()); |
| isRegistered = true; |
| } catch (final JobEventListenerConfigurationException ex) { |
| log.error("Elastic job: create JobEventListener failure, error is: ", ex); |
| } |
| } |
| |
| /** |
| * 发布事件. |
| * |
| * @param event 作业事件 |
| */ |
| public void post(final JobEvent event) { |
| if (isRegistered && !executorServiceObject.isShutdown()) { |
| eventBus.post(event); |
| } |
| } |
| } |