| /** |
| * 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.utils; |
| |
| import java.util.LinkedList; |
| import java.util.List; |
| import org.apache.storm.task.OutputCollector; |
| import org.apache.storm.tuple.Tuple; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| public class BatchHelper { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(BatchHelper.class); |
| |
| private int batchSize = 15000; //default batch size 15000 |
| private List<Tuple> tupleBatch; |
| private boolean forceFlush = false; |
| private OutputCollector collector; |
| |
| public BatchHelper(int batchSize, OutputCollector collector) { |
| if (batchSize > 0) { |
| this.batchSize = batchSize; |
| } |
| this.collector = collector; |
| this.tupleBatch = new LinkedList<>(); |
| } |
| |
| public void fail(Exception e) { |
| collector.reportError(e); |
| for (Tuple t : tupleBatch) { |
| collector.fail(t); |
| } |
| tupleBatch.clear(); |
| forceFlush = false; |
| } |
| |
| public void ack() { |
| for (Tuple t : tupleBatch) { |
| collector.ack(t); |
| } |
| tupleBatch.clear(); |
| forceFlush = false; |
| } |
| |
| public boolean shouldHandle(Tuple tuple) { |
| if (TupleUtils.isTick(tuple)) { |
| LOG.debug("TICK received! current batch status [{}/{}]", tupleBatch.size(), batchSize); |
| forceFlush = true; |
| return false; |
| } else { |
| return true; |
| } |
| } |
| |
| public void addBatch(Tuple tuple) { |
| tupleBatch.add(tuple); |
| if (tupleBatch.size() >= batchSize) { |
| forceFlush = true; |
| } |
| } |
| |
| public List<Tuple> getBatchTuples() { |
| return this.tupleBatch; |
| } |
| |
| public int getBatchSize() { |
| return this.batchSize; |
| } |
| |
| public boolean shouldFlush() { |
| return forceFlush && !tupleBatch.isEmpty(); |
| } |
| |
| } |