org.deegree.services.wms.TileLayerPerformanceTest.java Source code

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Here is the source code for org.deegree.services.wms.TileLayerPerformanceTest.java

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//$HeadURL$
/*----------------------------------------------------------------------------
 This file is part of deegree, http://deegree.org/
 Copyright (C) 2001-2010 by:
 - Department of Geography, University of Bonn -
 and
 - lat/lon GmbH -
    
 This library is free software; you can redistribute it and/or modify it under
 the terms of the GNU Lesser General Public License as published by the Free
 Software Foundation; either version 2.1 of the License, or (at your option)
 any later version.
 This library is distributed in the hope that it will be useful, but WITHOUT
 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
 details.
 You should have received a copy of the GNU Lesser General Public License
 along with this library; if not, write to the Free Software Foundation, Inc.,
 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
    
 Contact information:
    
 lat/lon GmbH
 Aennchenstr. 19, 53177 Bonn
 Germany
 http://lat-lon.de/
    
 Department of Geography, University of Bonn
 Prof. Dr. Klaus Greve
 Postfach 1147, 53001 Bonn
 Germany
 http://www.geographie.uni-bonn.de/deegree/
    
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 ----------------------------------------------------------------------------*/
package org.deegree.services.wms;

import static org.deegree.commons.utils.io.Utils.DEV_NULL;
import static org.deegree.commons.utils.net.HttpUtils.STREAM;
import static org.deegree.commons.utils.net.HttpUtils.retrieve;

import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

import javax.xml.stream.XMLStreamException;

import org.apache.commons.io.IOUtils;
import org.deegree.geometry.Envelope;
import org.deegree.protocol.ows.exception.OWSExceptionReport;
import org.deegree.protocol.wms.client.WMSClient;
import org.junit.Assert;
import org.junit.Assume;
import org.junit.Test;

/**
 * <code>TileLayerPT</code>
 * 
 * @author <a href="mailto:schmitz@occamlabs.de">Andreas Schmitz</a>
 * @author last edited by: $Author: mschneider $
 * 
 * @version $Revision: 31882 $, $Date: 2011-09-15 02:05:04 +0200 (Thu, 15 Sep 2011) $
 */
public class TileLayerPerformanceTest {

    @Test
    public void testPerformance() throws IOException, InterruptedException, OWSExceptionReport, XMLStreamException {
        String base = "http://localhost:" + System.getProperty("portnumber");
        base += "/deegree-wms-tiling-tests/services";
        WMSClient client = new WMSClient(new URL(base + "?request=GetCapabilities&service=WMS&version=1.1.1"));

        // skip test if layer is not available, then we probably don't have the huge file available
        Assume.assumeTrue(client.hasLayer("performance"));

        String crs = client.getCoordinateSystems("performance").getFirst();

        Envelope envelope = client.getBoundingBox(crs, "performance");
        double minx = envelope.getMin().get0();
        double miny = envelope.getMin().get1();
        double res = 0.14;
        double spanx = res * 800;
        double spany = res * 600;
        base += "?request=GetMap&service=WMS&version=1.1.1&layers=performance&styles=&width=800&height=600&";
        base += "format=image/png&transparent=true&srs=" + crs + "&bbox=";

        List<Callable<Object>> list = new ArrayList<Callable<Object>>();

        for (int i = 0; i < 100; ++i) {
            String url = base + minx + "," + miny + ",";
            minx += spanx;
            miny += spany;
            url += minx + "," + miny;
            list.add(new Fetcher(url));
        }

        ExecutorService service = Executors.newFixedThreadPool(10);

        long t1 = System.currentTimeMillis();
        service.invokeAll(list);
        t1 = System.currentTimeMillis() - t1;
        System.out.println("Requested 100 images, 10 in parallel, took " + (t1 / 1000) + " seconds.");
        double avg = (t1 / 100d) / 1000d;
        System.out.println("Average secs/request: " + avg);
        Assert.assertTrue("Average response time was too high.", avg < 5);
    }

    static class Fetcher implements Callable<Object> {
        private String url;

        Fetcher(String url) {
            this.url = url;
        }

        @Override
        public Object call() throws Exception {
            InputStream in = retrieve(STREAM, url);
            IOUtils.copy(in, DEV_NULL);
            in.close();
            return null;
        }
    }

}