| /** |
| * 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.samples.lib.math; |
| |
| import com.datatorrent.api.StreamingApplication; |
| import com.datatorrent.api.DAG; |
| import com.datatorrent.lib.io.*; |
| import com.datatorrent.lib.testbench.RandomEventGenerator; |
| import org.apache.hadoop.conf.Configuration; |
| |
| /** |
| * <b> Usage Operator : </b> com.datatorrent.lib.testbench.RandomEventGenerator <br> |
| * This sample usage for predefined operator <b>RandomEventGenerator</b>. <br> |
| * Random generator output is printed to output console(can be any downstream operator). |
| * |
| * @since 0.3.2 |
| */ |
| public class RandomEvenetGeneratorSample implements StreamingApplication |
| { |
| @Override |
| public void populateDAG(DAG dag, Configuration conf) |
| { |
| // Create application dag. |
| dag.setAttribute(DAG.APPLICATION_NAME, "RandomEventGeneratorApplication"); |
| dag.setAttribute(DAG.DEBUG, true); |
| |
| // Add random integer generator operator |
| RandomEventGenerator rand = dag.addOperator("rand", RandomEventGenerator.class); |
| rand.setMaxvalue(999999999); |
| rand.setTuplesBlast(10); |
| rand.setTuplesBlastIntervalMillis(1000); |
| |
| // Connect to output console operator |
| ConsoleOutputOperator console = dag.addOperator("console", new ConsoleOutputOperator()); |
| dag.addStream("rand_console",rand.integer_data , console.input); |
| |
| // done |
| } |
| |
| |
| } |