| /** |
| * 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.storm.trident.spout; |
| |
| import java.util.Map; |
| import org.apache.storm.task.TopologyContext; |
| import org.apache.storm.trident.operation.TridentCollector; |
| import org.apache.storm.trident.topology.TransactionAttempt; |
| import org.apache.storm.tuple.Fields; |
| |
| public class BatchSpoutExecutor implements ITridentSpout<Object> { |
| IBatchSpout spout; |
| |
| public BatchSpoutExecutor(IBatchSpout spout) { |
| this.spout = spout; |
| } |
| |
| @Override |
| public BatchCoordinator<Object> getCoordinator(String txStateId, Map<String, Object> conf, TopologyContext context) { |
| return new EmptyCoordinator(); |
| } |
| |
| @Override |
| public Emitter<Object> getEmitter(String txStateId, Map<String, Object> conf, TopologyContext context) { |
| spout.open(conf, context); |
| return new BatchSpoutEmitter(); |
| } |
| |
| @Override |
| public Map<String, Object> getComponentConfiguration() { |
| return spout.getComponentConfiguration(); |
| } |
| |
| @Override |
| public Fields getOutputFields() { |
| return spout.getOutputFields(); |
| } |
| |
| public static class EmptyCoordinator implements BatchCoordinator<Object> { |
| @Override |
| public Object initializeTransaction(long txid, Object prevMetadata, Object currMetadata) { |
| return null; |
| } |
| |
| @Override |
| public void close() { |
| } |
| |
| @Override |
| public void success(long txid) { |
| } |
| |
| @Override |
| public boolean isReady(long txid) { |
| return true; |
| } |
| } |
| |
| public class BatchSpoutEmitter implements Emitter<Object> { |
| |
| @Override |
| public void emitBatch(TransactionAttempt tx, Object coordinatorMeta, TridentCollector collector) { |
| spout.emitBatch(tx.getTransactionId(), collector); |
| } |
| |
| @Override |
| public void success(TransactionAttempt tx) { |
| spout.ack(tx.getTransactionId()); |
| } |
| |
| @Override |
| public void close() { |
| spout.close(); |
| } |
| } |
| |
| } |