| /* |
| * 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.executor.type; |
| |
| import io.elasticjob.cloud.api.ShardingContext; |
| import io.elasticjob.cloud.api.dataflow.DataflowJob; |
| import io.elasticjob.cloud.config.dataflow.DataflowJobConfiguration; |
| import io.elasticjob.cloud.executor.AbstractElasticJobExecutor; |
| import io.elasticjob.cloud.executor.JobFacade; |
| |
| import java.util.List; |
| |
| /** |
| * 数据流作业执行器. |
| * |
| * @author zhangliang |
| */ |
| public final class DataflowJobExecutor extends AbstractElasticJobExecutor { |
| |
| private final DataflowJob<Object> dataflowJob; |
| |
| public DataflowJobExecutor(final DataflowJob<Object> dataflowJob, final JobFacade jobFacade) { |
| super(jobFacade); |
| this.dataflowJob = dataflowJob; |
| } |
| |
| @Override |
| protected void process(final ShardingContext shardingContext) { |
| DataflowJobConfiguration dataflowConfig = (DataflowJobConfiguration) getJobRootConfig().getTypeConfig(); |
| if (dataflowConfig.isStreamingProcess()) { |
| streamingExecute(shardingContext); |
| } else { |
| oneOffExecute(shardingContext); |
| } |
| } |
| |
| private void streamingExecute(final ShardingContext shardingContext) { |
| List<Object> data = fetchData(shardingContext); |
| while (null != data && !data.isEmpty()) { |
| processData(shardingContext, data); |
| if (!getJobFacade().isEligibleForJobRunning()) { |
| break; |
| } |
| data = fetchData(shardingContext); |
| } |
| } |
| |
| private void oneOffExecute(final ShardingContext shardingContext) { |
| List<Object> data = fetchData(shardingContext); |
| if (null != data && !data.isEmpty()) { |
| processData(shardingContext, data); |
| } |
| } |
| |
| private List<Object> fetchData(final ShardingContext shardingContext) { |
| return dataflowJob.fetchData(shardingContext); |
| } |
| |
| private void processData(final ShardingContext shardingContext, final List<Object> data) { |
| dataflowJob.processData(shardingContext, data); |
| } |
| } |