001package org.apache.turbine.pipeline;
002
003
004/*
005 * Licensed to the Apache Software Foundation (ASF) under one
006 * or more contributor license agreements.  See the NOTICE file
007 * distributed with this work for additional information
008 * regarding copyright ownership.  The ASF licenses this file
009 * to you under the Apache License, Version 2.0 (the
010 * "License"); you may not use this file except in compliance
011 * with the License.  You may obtain a copy of the License at
012 *
013 *   http://www.apache.org/licenses/LICENSE-2.0
014 *
015 * Unless required by applicable law or agreed to in writing,
016 * software distributed under the License is distributed on an
017 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
018 * KIND, either express or implied.  See the License for the
019 * specific language governing permissions and limitations
020 * under the License.
021 */
022
023
024import static org.junit.Assert.assertEquals;
025
026import java.io.StringWriter;
027
028import org.junit.Ignore;
029import org.junit.Test;
030
031/**
032 * Tests TurbinePipeline.
033 *
034 * @author <a href="mailto:dlr@finemaltcoding.com">Daniel Rall</a>
035 * @version $Id: PipelineTest.java 1724799 2016-01-15 13:21:01Z tv $
036 */
037public class PipelineTest
038{
039    private final static int THREADS = 100;
040    private final static int LOOPS = 10000;
041
042    /**
043     * Tests the Pipeline.
044     */
045    @Test public void testPipeline() throws Exception
046    {
047        // Make sure Valves are getting added properly to the
048        // Pipeline.
049        StringWriter writer = new StringWriter();
050        Pipeline pipeline = new TurbinePipeline();
051
052        SimpleValve valve = new SimpleValve();
053        valve.setWriter(writer);
054        valve.setValue("foo");
055        pipeline.addValve(valve);
056        valve = new SimpleValve();
057        valve.setWriter(writer);
058        valve.setValue("bar");
059        pipeline.addValve(valve);
060
061        pipeline.invoke(new DefaultPipelineData());
062
063        assertEquals("foobar", writer.toString());
064    }
065
066    /**
067     * Tests the Pipeline throughput.
068     */
069    @Ignore("For performance tests only") @Test public void testPipelinePerformance() throws Exception
070    {
071        StringWriter writer = new StringWriter();
072        Pipeline pipeline = new TurbinePipeline();
073
074        SimpleValve valve = new SimpleValve();
075        valve.setWriter(writer);
076        valve.setValue("foo");
077        pipeline.addValve(valve);
078        valve = new SimpleValve();
079        valve.setWriter(writer);
080        valve.setValue("bar");
081        pipeline.addValve(valve);
082
083        Worker[] worker = new Worker[THREADS];
084        long startTime = System.currentTimeMillis();
085
086        for (int i = 0; i < THREADS; i++)
087        {
088            worker[i] = new Worker(pipeline);
089            worker[i].start();
090        }
091
092        for (int i = 0; i < THREADS; i++)
093        {
094            worker[i].join();
095        }
096
097        System.out.println(System.currentTimeMillis() - startTime);
098    }
099
100    /**
101     * Worker thread
102     */
103    protected class Worker extends Thread
104    {
105        Pipeline pipeline;
106
107        /**
108         * Constructor
109         *
110         * @param pipeline
111         */
112        public Worker(Pipeline pipeline)
113        {
114            super();
115            this.pipeline = pipeline;
116        }
117
118        @Override
119        public void run()
120        {
121            PipelineData pd = new DefaultPipelineData();
122
123            for (int idx = 0; idx < LOOPS; idx++)
124            {
125                try
126                {
127                    pipeline.invoke(pd);
128                }
129                catch (Exception e)
130                {
131                    e.printStackTrace();
132                }
133            }
134        }
135    }
136}