/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.cassandra.net.sink;
import java.util.LinkedList;
import java.util.ListIterator;
import org.apache.cassandra.net.Message;
public class SinkManager
{
private static LinkedList<IMessageSink> messageSinks_ = new LinkedList<IMessageSink>();
public static boolean isInitialized()
{
return ( messageSinks_.size() > 0 );
}
public static void addMessageSink(IMessageSink ms)
{
messageSinks_.addLast(ms);
}
public static void clearSinks(){
messageSinks_.clear();
}
public static Message processClientMessageSink(Message message)
{
ListIterator<IMessageSink> li = messageSinks_.listIterator();
while ( li.hasNext() )
{
IMessageSink ms = li.next();
message = ms.handleMessage(message);
if ( message == null )
{
return null;
}
}
return message;
}
public static Message processServerMessageSink(Message message)
{
ListIterator<IMessageSink> li = messageSinks_.listIterator(messageSinks_.size());
while ( li.hasPrevious() )
{
IMessageSink ms = li.previous();
message = ms.handleMessage(message);
if ( message == null )
{
return null;
}
}
return message;
}
}