/*
* Copyright 2011 JBoss, by Red Hat, Inc
*
* 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.errai.enterprise.client.cdi;
import org.jboss.errai.bus.client.ErraiBus;
import org.jboss.errai.bus.client.api.BusErrorCallback;
import org.jboss.errai.bus.client.api.ClientMessageBus;
import org.jboss.errai.bus.client.api.base.MessageBuilder;
import org.jboss.errai.bus.client.api.base.NoSubscribersToDeliverTo;
import org.jboss.errai.bus.client.api.messaging.Message;
import org.jboss.errai.bus.client.api.messaging.MessageCallback;
import org.jboss.errai.bus.client.framework.ClientMessageBusImpl;
import org.jboss.errai.bus.client.util.BusToolsCli;
import org.jboss.errai.common.client.api.extension.InitVotes;
import org.jboss.errai.common.client.protocols.MessageParts;
import org.jboss.errai.common.client.util.LogUtil;
import org.jboss.errai.enterprise.client.cdi.api.CDI;
import org.jboss.errai.enterprise.client.cdi.events.BusReadyEvent;
import com.google.gwt.core.client.EntryPoint;
/**
* The GWT entry point for the Errai CDI module.
*
* @author Mike Brock <cbrock@redhat.com>
* @author Christian Sadilek <csadilek@redhat.com>
*/
public class CDIClientBootstrap implements EntryPoint {
static final ClientMessageBusImpl bus = (ClientMessageBusImpl) ErraiBus.get();
final static Runnable initRemoteCdiSubsystem = new Runnable() {
@Override
public void run() {
LogUtil.log("CDI subsystem syncing with server ...");
BusErrorCallback serverDispatchErrorCallback = new BusErrorCallback() {
@Override
public boolean error(Message message, Throwable throwable) {
try {
throw throwable;
}
catch (NoSubscribersToDeliverTo e) {
LogUtil.log("Server did not subscribe to " + CDI.SERVER_DISPATCHER_SUBJECT +
". To activate the full Errai CDI functionality, make sure that Errai's Weld " +
"integration module has been deployed on the server.");
CDI.activate();
return false;
}
catch (Throwable t) {
return true;
}
}
};
MessageBuilder.createMessage().toSubject(CDI.SERVER_DISPATCHER_SUBJECT)
.command(CDICommands.AttachRemote)
.errorsHandledBy(serverDispatchErrorCallback)
.sendNowWith(bus);
CDI.resendSubscriptionRequestForAllEventTypes();
CDI.fireEvent(new BusReadyEvent());
}
@Override
public String toString() {
return "BusReadyEvent";
}
};
final static Runnable declareServices = new Runnable() {
final ClientMessageBusImpl bus = (ClientMessageBusImpl) ErraiBus.get();
@Override
public void run() {
if (!bus.isSubscribed(CDI.CLIENT_DISPATCHER_SUBJECT)) {
LogUtil.log("declare CDI dispatch service");
bus.subscribe(CDI.CLIENT_DISPATCHER_SUBJECT, new MessageCallback() {
@Override
public void callback(final Message message) {
switch (CDICommands.valueOf(message.getCommandType())) {
case AttachRemote:
CDI.activate(message.get(String.class, MessageParts.RemoteServices).split(","));
break;
case RemoteSubscribe:
CDI.addRemoteEventTypes(message.get(String[].class, MessageParts.Value));
break;
case CDIEvent:
CDI.consumeEventFromMessage(message);
break;
}
}
});
}
}
};
@Override
public void onModuleLoad() {
InitVotes.registerPersistentPreInitCallback(declareServices);
InitVotes.waitFor(CDI.class);
if (BusToolsCli.isRemoteCommunicationEnabled()) {
InitVotes.registerPersistentDependencyCallback(ClientMessageBus.class, initRemoteCdiSubsystem);
}
else {
CDI.activate();
CDI.fireEvent(new BusReadyEvent());
}
}
}