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/*******************************************************************************
* Copyright (c) 2009, 2016 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.ua.tests.help.util;
import java.io.InputStream;
import java.net.URL;
import java.net.URLConnection;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.help.internal.server.WebappManager;
import org.junit.Assert;
public class LoadServletUtil {
private static long uniqueParam = System.currentTimeMillis();
/**
* Start a server for use in the performance tests
* @throws Exception
*/
public static void startServer() throws Exception {
WebappManager.start("help");
int port = WebappManager.getPort();
URL url = new URL("http", "localhost", port, "/help/index.jsp");
URLConnection connection = url.openConnection();
setTimeout(connection, 5000);
try (InputStream input = url.openStream()) {
int firstbyte = input.read();
Assert.assertTrue(firstbyte > 0);
}
}
/**
* Stop the server created by startServer()
* @throws CoreException
*/
public static void stopServer() throws CoreException {
WebappManager.stop("help");
}
/**
* Read an html page generated by a servlet
* @param paragraphs the number of paragraphs in the page
* @throws Exception
*/
public static void readLoadServlet(int paragraphs) throws Exception {
int port = WebappManager.getPort();
// Use a unique parameter to defeat caching
++uniqueParam;
URL url = new URL("http", "localhost", port,
"/help/loadtest?value=" + uniqueParam + "&repeat=" + paragraphs);
try (InputStream input = url.openStream()) {
int nextChar;
long value = 0;
// The loadtest servlet returns the uniqueParam in an opening
// comment such as <!--1234-->
// Read this to verify that we are not getting a cached page
boolean inFirstComment = true;
do {
nextChar = input.read();
if (inFirstComment) {
if (nextChar == '>') {
inFirstComment = false;
} else if (Character.isDigit((char) nextChar)) {
value = value * 10 + (nextChar - '0');
}
}
} while (nextChar != '$');
Assert.assertEquals(uniqueParam, value);
}
}
private static void setTimeout(URLConnection conn, int milliseconds) {
conn.setConnectTimeout(milliseconds);
conn.setReadTimeout(milliseconds);
}
}
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