// Copyright 2012 Google Inc. All Rights Reserved.
//
// 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 com.google.collide.client;
import com.google.collide.client.communication.MessageFilter;
import com.google.collide.client.communication.MessageFilter.MessageRecipient;
import com.google.collide.clientlibs.invalidation.InvalidationManager;
import com.google.collide.dto.InvalidationMessage;
import com.google.collide.dto.RoutingTypes;
/**
* A demultiplexer that receives a single {@link InvalidationMessage} message type from the push
* channel and sends it to the appropriate listener.
*
*/
public class InvalidationMessageDemux {
public static InvalidationMessageDemux attach(
InvalidationManager invalidationManager, MessageFilter messageFilter) {
InvalidationMessageDemux demux = new InvalidationMessageDemux(invalidationManager);
messageFilter.registerMessageRecipient(RoutingTypes.INVALIDATIONMESSAGE, demux.dtoRecipient);
return demux;
}
private final InvalidationManager tangoInvalidationManager;
private final MessageRecipient<InvalidationMessage> dtoRecipient =
new MessageRecipient<InvalidationMessage>() {
@Override
public void onMessageReceived(InvalidationMessage invalidation) {
tangoInvalidationManager.handleInvalidation(invalidation.getObjectName(),
Long.parseLong(invalidation.getVersion()), invalidation.getPayload());
}
};
private InvalidationMessageDemux(InvalidationManager tangoInvalidationManager) {
this.tangoInvalidationManager = tangoInvalidationManager;
}
}