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/*
* JBoss, Home of Professional Open Source
* Copyright 2009 Red Hat Inc. and/or its affiliates and other contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* Licensed 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 org.jboss.arquillian.protocol.servlet;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.net.ConnectException;
import java.net.HttpURLConnection;
import java.net.URI;
import java.net.URL;
import java.net.URLConnection;
import java.net.URLEncoder;
import java.util.Collection;
import java.util.Timer;
import java.util.TimerTask;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
import java.util.logging.Logger;
import org.jboss.arquillian.container.spi.client.protocol.metadata.HTTPContext;
import org.jboss.arquillian.container.test.spi.ContainerMethodExecutor;
import org.jboss.arquillian.container.test.spi.command.Command;
import org.jboss.arquillian.container.test.spi.command.CommandCallback;
import org.jboss.arquillian.test.spi.TestMethodExecutor;
import org.jboss.arquillian.test.spi.TestResult;
/**
* ServletMethodExecutor
*
* @author Aslak Knutsen
* @version $Revision: $
*/
public class ServletMethodExecutor implements ContainerMethodExecutor {
public static final String ARQUILLIAN_SERVLET_NAME = "ArquillianServletRunner";
public static final String ARQUILLIAN_SERVLET_MAPPING = "/" + ARQUILLIAN_SERVLET_NAME;
private static final Logger log = Logger.getLogger(ContainerMethodExecutor.class.getName());
protected ServletURIHandler uriHandler;
protected CommandCallback callback;
protected ServletProtocolConfiguration config;
protected ServletMethodExecutor() {
}
public ServletMethodExecutor(ServletProtocolConfiguration config, Collection contexts,
final CommandCallback callback) {
if (config == null) {
throw new IllegalArgumentException("ServletProtocolConfiguration must be specified");
}
if (contexts == null || contexts.size() == 0) {
throw new IllegalArgumentException("HTTPContext must be specified");
}
if (callback == null) {
throw new IllegalArgumentException("Callback must be specified");
}
this.config = config;
this.uriHandler = new ServletURIHandler(config, contexts);
this.callback = callback;
}
public TestResult invoke(final TestMethodExecutor testMethodExecutor) {
if (testMethodExecutor == null) {
throw new IllegalArgumentException("TestMethodExecutor must be specified");
}
URI targetBaseURI = uriHandler.locateTestServlet(testMethodExecutor.getMethod());
Class testClass = testMethodExecutor.getInstance().getClass();
Timer eventTimer = null;
Lock timerLock = new ReentrantLock();
AtomicBoolean isCanceled = new AtomicBoolean();
try {
String urlEncodedMethodName = URLEncoder.encode(testMethodExecutor.getMethodName(), "UTF-8");
final String url = targetBaseURI.toASCIIString() + ARQUILLIAN_SERVLET_MAPPING
+ "?outputMode=serializedObject&className=" + testClass.getName() + "&methodName="
+ urlEncodedMethodName;
final String eventUrl = targetBaseURI.toASCIIString() + ARQUILLIAN_SERVLET_MAPPING
+ "?outputMode=serializedObject&className=" + testClass.getName() + "&methodName="
+ urlEncodedMethodName + "&cmd=event";
eventTimer = createCommandServicePullTimer(eventUrl, timerLock, isCanceled);
return executeWithRetry(url, TestResult.class);
} catch (Exception e) {
throw new IllegalStateException("Error launching test " + testClass.getName() + " "
+ testMethodExecutor.getMethod(), e);
} finally {
if (eventTimer != null) {
eventTimer.cancel();
timerLock.lock();
try {
isCanceled.set(true);
} finally {
timerLock.unlock();
}
}
}
}
protected T executeWithRetry(String url, Class type) throws Exception {
long timeoutTime = System.currentTimeMillis() + 1000;
boolean interrupted = false;
while (timeoutTime > System.currentTimeMillis()) {
T o = execute(url, type, null);
if (o != null) {
return o;
}
try {
Thread.sleep(200);
} catch (InterruptedException e) {
interrupted = true;
}
}
if (interrupted) {
Thread.currentThread().interrupt();
}
throw new IllegalStateException("Error launching request at " + url + ". No result returned");
}
protected T execute(String url, Class returnType, Object requestObject) throws Exception {
URLConnection connection = new URL(url).openConnection();
if (!(connection instanceof HttpURLConnection)) {
throw new IllegalStateException("Not an http connection! " + connection);
}
HttpURLConnection httpConnection = (HttpURLConnection) connection;
httpConnection.setUseCaches(false);
httpConnection.setDefaultUseCaches(false);
httpConnection.setDoInput(true);
prepareHttpConnection(httpConnection);
try {
if (requestObject != null) {
httpConnection.setRequestMethod("POST");
httpConnection.setDoOutput(true);
httpConnection.setRequestProperty("Content-Type", "application/octet-stream");
}
if (requestObject != null) {
ObjectOutputStream ous = new ObjectOutputStream(httpConnection.getOutputStream());
try {
ous.writeObject(requestObject);
} catch (Exception e) {
throw new RuntimeException("Error sending request Object, " + requestObject, e);
} finally {
ous.flush();
ous.close();
}
}
try {
httpConnection.getResponseCode();
} catch (ConnectException e) {
return null; // Could not connect
}
if (httpConnection.getResponseCode() == HttpURLConnection.HTTP_OK) {
ObjectInputStream ois = new ObjectInputStream(httpConnection.getInputStream());
Object o;
try {
o = ois.readObject();
} finally {
ois.close();
}
if (!returnType.isInstance(o)) {
throw new IllegalStateException(
"Error reading results, expected a " + returnType.getName() + " but got " + o);
}
return returnType.cast(o);
} else if (httpConnection.getResponseCode() == HttpURLConnection.HTTP_NO_CONTENT) {
return null;
} else if (httpConnection.getResponseCode() != HttpURLConnection.HTTP_NOT_FOUND) {
throw new IllegalStateException(
"Error launching test at " + url + ". " +
"Got " + httpConnection.getResponseCode() + " (" + httpConnection.getResponseMessage() + ")");
}
} finally {
httpConnection.disconnect();
}
return null;
}
@SuppressWarnings("UnusedParameters")
protected void prepareHttpConnection(HttpURLConnection connection) {
}
protected Timer createCommandServicePullTimer(final String eventUrl,
final Lock timerLock, final AtomicBoolean isCanceled) {
if (config.getPullInMilliSeconds() == null || config.getPullInMilliSeconds() <= 0) {
log.warning("The Servlet Protocol has been configured with a pullInMilliSeconds interval of " +
config.getPullInMilliSeconds() + ". The effect of this is that the Command Service has been disabled." +
" Depending on which features you use, this might cause serious delays. Be on high alert for " +
" possible timeout runtime exceptions.");
return null;
}
Timer eventTimer = new Timer();
eventTimer.schedule(new TimerTask() {
@Override
public void run() {
timerLock.lock();
try {
if (isCanceled.get()) {
return;
}
Object o = execute(eventUrl, Object.class, null);
if (o != null) {
if (o instanceof Command) {
Command command = (Command) o;
callback.fired(command);
execute(eventUrl, Object.class, command);
} else {
throw new RuntimeException("Recived a non " + Command.class.getName()
+ " object on event channel");
}
}
} catch (Exception e) {
e.printStackTrace();
} finally {
timerLock.unlock();
}
}
}, 0, config.getPullInMilliSeconds());
return eventTimer;
}
}
