| /* |
| * 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.karaf.webconsole.servicemix.internal; |
| |
| import java.io.Serializable; |
| import java.util.Deque; |
| import java.util.LinkedList; |
| |
| import org.apache.servicemix.nmr.api.Exchange; |
| |
| /** |
| * Implementation of tracking listener which keeps last few exchanges. |
| */ |
| public class TrackingExchangeListener implements ITrackingExchangeListener, Serializable { |
| |
| private final int maxSize; |
| private Deque<Exchange> exchanges = new LinkedList<Exchange>(); |
| |
| public TrackingExchangeListener() { |
| this(20); |
| } |
| |
| public TrackingExchangeListener(int maxSize) { |
| this.maxSize = maxSize; |
| } |
| |
| public void exchangeSent(Exchange exchange) { |
| queue(exchange); |
| } |
| |
| public void exchangeDelivered(Exchange exchange) { |
| queue(exchange); |
| } |
| |
| public void exchangeFailed(Exchange exchange) { |
| queue(exchange); |
| } |
| |
| private void queue(Exchange exchange) { |
| if (exchanges.size() == maxSize) { |
| exchanges.removeLast(); |
| } |
| exchanges.addFirst(exchange); |
| } |
| |
| public Deque<Exchange> getExchanges() { |
| return exchanges; |
| } |
| |
| } |