| /* |
| * 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.cloudstack.framework.transport; |
| |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| |
| public class TransportEndpointSite { |
| private TransportProvider _provider; |
| private TransportEndpoint _endpoint; |
| private TransportAddress _address; |
| |
| private List<TransportPdu> _outputQueue = new ArrayList<TransportPdu>(); |
| private Map<String, TransportMultiplexier> _multiplexierMap = new HashMap<String, TransportMultiplexier>(); |
| |
| private int _outstandingSignalRequests; |
| |
| public TransportEndpointSite(TransportProvider provider, TransportEndpoint endpoint, TransportAddress address) { |
| assert (provider != null); |
| assert (endpoint != null); |
| assert (address != null); |
| |
| _provider = provider; |
| _endpoint = endpoint; |
| _address = address; |
| |
| _outstandingSignalRequests = 0; |
| } |
| |
| public TransportEndpointSite(TransportProvider provider, TransportEndpoint endpoint) { |
| assert (provider != null); |
| assert (endpoint != null); |
| |
| _provider = provider; |
| _endpoint = endpoint; |
| |
| _outstandingSignalRequests = 0; |
| } |
| |
| public TransportEndpoint getEndpoint() { |
| return _endpoint; |
| } |
| |
| public TransportAddress getAddress() { |
| return _address; |
| } |
| |
| public void setAddress(TransportAddress address) { |
| _address = address; |
| } |
| |
| public void registerMultiplexier(String name, TransportMultiplexier multiplexier) { |
| assert (name != null); |
| assert (multiplexier != null); |
| assert (_multiplexierMap.get(name) == null); |
| |
| _multiplexierMap.put(name, multiplexier); |
| } |
| |
| public void unregisterMultiplexier(String name) { |
| assert (name != null); |
| _multiplexierMap.remove(name); |
| } |
| |
| public void addOutputPdu(TransportPdu pdu) { |
| synchronized (this) { |
| _outputQueue.add(pdu); |
| } |
| |
| signalOutputProcessRequest(); |
| } |
| |
| public TransportPdu getNextOutputPdu() { |
| synchronized (this) { |
| if (_outputQueue.size() > 0) |
| return _outputQueue.remove(0); |
| } |
| |
| return null; |
| } |
| |
| public void processOutput() { |
| TransportPdu pdu; |
| TransportEndpoint endpoint = getEndpoint(); |
| |
| if (endpoint != null) { |
| while ((pdu = getNextOutputPdu()) != null) { |
| if (pdu instanceof TransportDataPdu) { |
| String multiplexierName = ((TransportDataPdu)pdu).getMultiplexier(); |
| TransportMultiplexier multiplexier = getRoutedMultiplexier(multiplexierName); |
| assert (multiplexier != null); |
| multiplexier.onTransportMessage(pdu.getSourceAddress(), pdu.getDestAddress(), multiplexierName, ((TransportDataPdu)pdu).getContent()); |
| } |
| } |
| } |
| } |
| |
| private TransportMultiplexier getRoutedMultiplexier(String multiplexierName) { |
| TransportMultiplexier multiplexier = _multiplexierMap.get(multiplexierName); |
| if (multiplexier == null) |
| multiplexier = _endpoint; |
| |
| return multiplexier; |
| } |
| |
| private void signalOutputProcessRequest() { |
| boolean proceed = false; |
| synchronized (this) { |
| if (_outstandingSignalRequests == 0) { |
| _outstandingSignalRequests++; |
| proceed = true; |
| } |
| } |
| |
| if (proceed) |
| _provider.requestSiteOutput(this); |
| } |
| |
| public void ackOutputProcessSignal() { |
| synchronized (this) { |
| assert (_outstandingSignalRequests == 1); |
| _outstandingSignalRequests--; |
| } |
| } |
| } |