/*
* Copyright (c) 2008-2014 the original author or authors.
*
* 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.cometd.javascript;
import java.util.HashMap;
import java.util.concurrent.atomic.AtomicBoolean;
import org.cometd.bayeux.server.BayeuxServer;
import org.cometd.bayeux.server.ServerChannel;
import org.cometd.bayeux.server.ServerMessage;
import org.cometd.bayeux.server.ServerSession;
import org.cometd.server.DefaultSecurityPolicy;
import org.junit.Assert;
import org.junit.Test;
public class CometDSubscribeTest extends AbstractCometDTest
{
@Test
public void testSubscriptionsUnsubscriptionsForSameChannelOnlySentOnce() throws Exception
{
defineClass(Latch.class);
evaluateScript("var subscribeLatch = new Latch(1);");
Latch subscribeLatch = get("subscribeLatch");
evaluateScript("cometd.addListener('/meta/subscribe', subscribeLatch, 'countDown');");
evaluateScript("var unsubscribeLatch = new Latch(1);");
Latch unsubscribeLatch = get("unsubscribeLatch");
evaluateScript("cometd.addListener('/meta/unsubscribe', unsubscribeLatch, 'countDown');");
evaluateScript("cometd.init({ url: '" + cometdURL + "', logLevel: '" + getLogLevel() + "' });");
Thread.sleep(1000); // Wait for long poll
evaluateScript("var subscription = cometd.subscribe('/foo', function(message) {});");
Assert.assertTrue(subscribeLatch.await(5000));
evaluateScript("cometd.unsubscribe(subscription);");
Assert.assertTrue(unsubscribeLatch.await(5000));
// Two subscriptions to the same channel also generate only one message to the server
subscribeLatch.reset(2);
evaluateScript("var subscription1 = cometd.subscribe('/foo', function(message) {});");
evaluateScript("var subscription2 = cometd.subscribe('/foo', function(message) {});");
Assert.assertFalse(subscribeLatch.await(1000));
// No message if there are subscriptions
unsubscribeLatch.reset(0);
evaluateScript("cometd.unsubscribe(subscription2);");
Assert.assertTrue(unsubscribeLatch.await(5000));
// Expect message for last unsubscription on the channel
unsubscribeLatch.reset(1);
evaluateScript("cometd.unsubscribe(subscription1);");
Assert.assertTrue(unsubscribeLatch.await(5000));
evaluateScript("cometd.disconnect(true);");
}
@Test
public void testSubscriptionsRemovedOnReHandshake() throws Exception
{
// Listeners are not removed in case of re-handshake
// since they are not dependent on the clientId
defineClass(Latch.class);
evaluateScript("var latch = new Latch(1);");
Latch latch = get("latch");
evaluateScript("cometd.addListener('/meta/publish', latch, 'countDown');");
evaluateScript("cometd.init({ url: '" + cometdURL + "', logLevel: '" + getLogLevel() + "' });");
Thread.sleep(1000); // Wait for long poll
evaluateScript("cometd.disconnect(true);");
// Wait for the connect to return
Thread.sleep(1000);
// Reconnect again
evaluateScript("cometd.handshake();");
Thread.sleep(1000); // Wait for long poll
// Wait for the message on the listener
evaluateScript("cometd.publish('/foo', {});");
Assert.assertTrue(latch.await(5000));
evaluateScript("var subscriber = new Latch(1);");
Latch subscriber = get("subscriber");
evaluateScript("cometd.subscribe('/test', subscriber, 'countDown');");
// Wait for the message on the subscriber and on the listener
latch.reset(1);
evaluateScript("cometd.publish('/test', {});");
Assert.assertTrue(latch.await(5000));
Assert.assertTrue(subscriber.await(5000));
evaluateScript("cometd.disconnect(true);");
// Wait for the connect to return
Thread.sleep(1000);
// Reconnect again
evaluateScript("cometd.handshake();");
Thread.sleep(1000); // Wait for long poll
// Now the previous subscriber must be gone, but not the listener
// Subscribe again: if the previous listener is not gone, I get 2 notifications
evaluateScript("cometd.subscribe('/test', subscriber, 'countDown');");
latch.reset(1);
subscriber.reset(2);
evaluateScript("cometd.publish('/test', {});");
Assert.assertTrue(latch.await(5000));
Assert.assertFalse(subscriber.await(5000));
evaluateScript("cometd.disconnect(true);");
}
@Test
public void testDynamicResubscription() throws Exception
{
defineClass(Latch.class);
evaluateScript("var latch = new Latch(1);");
Latch latch = get("latch");
evaluateScript("" +
"cometd.configure({ url: '" + cometdURL + "', logLevel: '" + getLogLevel() + "' });" +
"" +
"var _subscription;" +
"cometd.addListener('/meta/handshake', function(m)" +
"{" +
" if (m.successful)" +
" {" +
" cometd.batch(function()" +
" {" +
" cometd.subscribe('/static', latch, 'countDown');" +
" if (_subscription)" +
" _subscription = cometd.resubscribe(_subscription);" +
" });" +
" }" +
"});" +
"" +
"cometd.handshake();" +
"");
// Wait for /meta/connect
Thread.sleep(1000);
evaluateScript("cometd.publish('/static', {});");
Assert.assertTrue(latch.await(5000));
latch.reset(2);
evaluateScript("" +
"cometd.batch(function()" +
"{" +
" _subscription = cometd.subscribe('/dynamic', latch, 'countDown');" +
" cometd.publish('/static', {});" +
" cometd.publish('/dynamic', {});" +
"});" +
"");
Assert.assertTrue(latch.await(5000));
latch.reset(2);
stopServer();
evaluateScript("" +
"var connectLatch = new Latch(1);" +
"cometd.addListener('/meta/connect', function(m)" +
"{" +
" if (m.successful)" +
" connectLatch.countDown();" +
"});" +
"");
Latch connectLatch = get("connectLatch");
// Restart the server to trigger a re-handshake
prepareAndStartServer(new HashMap<String, String>());
// Wait until we are fully reconnected
Assert.assertTrue(connectLatch.await(5000));
evaluateScript("" +
"cometd.batch(function()" +
"{" +
" cometd.publish('/static', {});" +
" cometd.publish('/dynamic', {});" +
"});" +
"");
Assert.assertTrue(latch.await(5000));
}
@Test
public void testSubscriptionDeniedRemovesListener() throws Exception
{
final AtomicBoolean subscriptionAllowed = new AtomicBoolean(false);
evaluateScript("var subscriptionAllowed = false;");
bayeuxServer.setSecurityPolicy(new DefaultSecurityPolicy()
{
@Override
public boolean canSubscribe(BayeuxServer server, ServerSession session, ServerChannel channel, ServerMessage message)
{
return subscriptionAllowed.get();
}
});
defineClass(Latch.class);
evaluateScript("var subscribeLatch = new Latch(1);");
Latch subscribeLatch = get("subscribeLatch");
evaluateScript("" +
"cometd.configure({ url: '" + cometdURL + "', logLevel: '" + getLogLevel() + "' });" +
"" +
"cometd.addListener('/meta/subscribe', function(m)" +
"{" +
" /* Either both false or both true should count down the latch */" +
" if (subscriptionAllowed ^ !m.successful)" +
" subscribeLatch.countDown();" +
"});" +
"" +
"cometd.handshake();" +
"");
// Wait for /meta/connect
Thread.sleep(1000);
String sessionId = evaluateScript("cometd.getClientId();");
final String channelName = "/test";
evaluateScript("var messageLatch = new Latch(1);");
Latch messageLatch = get("messageLatch");
evaluateScript("cometd.subscribe('" + channelName + "', messageLatch, 'countDown');");
Assert.assertTrue(subscribeLatch.await(5000));
// Verify that messages are not received
bayeuxServer.getSession(sessionId).deliver(null, channelName, "data");
Assert.assertFalse(messageLatch.await(1000));
// Reset and allow subscriptions
subscribeLatch.reset(1);
messageLatch.reset(1);
subscriptionAllowed.set(true);
evaluateScript("subscriptionAllowed = true");
evaluateScript("cometd.subscribe('" + channelName + "', messageLatch, 'countDown');");
Assert.assertTrue(subscribeLatch.await(5000));
// Verify that messages are received
bayeuxServer.getChannel(channelName).publish(null, "data");
Assert.assertTrue(messageLatch.await(1000));
}
@Test
public void testSubscriptionSuccessfulInvokesCallback() throws Exception
{
defineClass(Latch.class);
final String channelName = "/foo";
evaluateScript("var latch = new Latch(2);");
Latch latch = get("latch");
evaluateScript("cometd.configure({ url: '" + cometdURL + "', logLevel: '" + getLogLevel() + "' });");
evaluateScript("cometd.addListener('/meta/handshake', function()" +
"{" +
" var subscription = cometd.subscribe('" + channelName + "', function(){}, function(message)" +
" {" +
" latch.countDown();" +
" cometd.unsubscribe(subscription, function(message)" +
" {" +
" latch.countDown();" +
" });" +
" });" +
"});");
evaluateScript("cometd.handshake();");
Assert.assertTrue(latch.await(5000));
evaluateScript("cometd.disconnect(true);");
}
@Test
public void testSubscriptionDeniedInvokesCallback() throws Exception
{
defineClass(Latch.class);
final String channelName = "/foo";
bayeuxServer.setSecurityPolicy(new DefaultSecurityPolicy()
{
@Override
public boolean canSubscribe(BayeuxServer server, ServerSession session, ServerChannel channel, ServerMessage message)
{
if (channelName.equals(channel.getId()))
return false;
return super.canSubscribe(server, session, channel, message);
}
});
evaluateScript("var subscribeLatch = new Latch(1);");
Latch subscribeLatch = get("subscribeLatch");
evaluateScript("cometd.configure({ url: '" + cometdURL + "', logLevel: '" + getLogLevel() + "' });");
evaluateScript("cometd.handshake(function()" +
"{" +
" cometd.subscribe('" + channelName + "', function(){}, {}, function(message)" +
" {" +
" subscribeLatch.countDown();" +
" });" +
"});");
Assert.assertTrue(subscribeLatch.await(5000));
evaluateScript("var disconnectLatch = new Latch(1);");
Latch disconnectLatch = get("disconnectLatch");
evaluateScript("cometd.disconnect(function(message){ disconnectLatch.countDown(); });");
Assert.assertTrue(disconnectLatch.await(5000));
}
}