| /** |
| * 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 com.datatorrent.contrib.util; |
| |
| import java.util.concurrent.atomic.AtomicInteger; |
| |
| import com.datatorrent.api.Context.OperatorContext; |
| import com.datatorrent.api.DefaultOutputPort; |
| import com.datatorrent.api.InputOperator; |
| import com.datatorrent.api.Operator.ActivationListener; |
| |
| /** |
| * @param <T> the type of tuple |
| */ |
| public class POJOTupleGenerateOperator<T> implements InputOperator, ActivationListener<OperatorContext> |
| { |
| protected final int DEFAULT_TUPLE_NUM = 10000; |
| public final transient DefaultOutputPort<T> outputPort = new DefaultOutputPort<T>(); |
| |
| private int tupleNum = DEFAULT_TUPLE_NUM; |
| private int batchNum = 5; |
| private TupleGenerator<T> tupleGenerator = null; |
| private Class<T> tupleClass; |
| private AtomicInteger emitedTuples = new AtomicInteger(0); |
| |
| public POJOTupleGenerateOperator() |
| { |
| } |
| |
| public POJOTupleGenerateOperator( Class<T> tupleClass ) |
| { |
| this.tupleClass = tupleClass; |
| } |
| |
| public void setTupleType( Class<T> tupleClass ) |
| { |
| this.tupleClass = tupleClass; |
| } |
| |
| @Override |
| public void beginWindow(long windowId) |
| { |
| } |
| |
| @Override |
| public void endWindow() |
| { |
| } |
| |
| @Override |
| public void setup(OperatorContext context) |
| { |
| } |
| |
| @Override |
| public void teardown() |
| { |
| } |
| |
| @Override |
| public void activate(OperatorContext ctx) |
| { |
| } |
| |
| @Override |
| public void deactivate() |
| { |
| } |
| |
| @Override |
| public void emitTuples() |
| { |
| final int theTupleNum = getTupleNum(); |
| if( emitedTuples.get() >= theTupleNum ) |
| { |
| try |
| { |
| Thread.sleep(10); |
| } |
| catch( Exception e ){} |
| return; |
| } |
| |
| |
| for( int i=0; i<batchNum; ++i ) |
| { |
| int count = emitedTuples.get(); |
| if( count >= theTupleNum ) |
| return; |
| |
| if( emitedTuples.compareAndSet(count, count+1) ) |
| { |
| T tuple = getNextTuple(); |
| outputPort.emit ( tuple ); |
| tupleEmitted( tuple ); |
| |
| if( count+1 == theTupleNum ) |
| { |
| tupleEmitDone(); |
| return; |
| } |
| } |
| |
| } |
| } |
| |
| |
| protected void tupleEmitted( T tuple ){} |
| protected void tupleEmitDone(){} |
| |
| public int getEmitedTupleCount() |
| { |
| return emitedTuples.get(); |
| } |
| |
| public int getTupleNum() |
| { |
| return tupleNum; |
| } |
| public void setTupleNum( int tupleNum ) |
| { |
| this.tupleNum = tupleNum; |
| } |
| |
| protected T getNextTuple() |
| { |
| if( tupleGenerator == null ) |
| tupleGenerator = createTupleGenerator(); |
| |
| return tupleGenerator.getNextTuple(); |
| } |
| |
| protected TupleGenerator<T> createTupleGenerator() |
| { |
| return new TupleGenerator( tupleClass ); |
| } |
| } |