| /* |
| * 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.server; |
| |
| import com.cloud.utils.concurrency.NamedThreadFactory; |
| import org.apache.cloudstack.framework.serializer.MessageSerializer; |
| import org.apache.cloudstack.framework.transport.TransportAddress; |
| import org.apache.cloudstack.framework.transport.TransportDataPdu; |
| import org.apache.cloudstack.framework.transport.TransportEndpoint; |
| import org.apache.cloudstack.framework.transport.TransportEndpointSite; |
| import org.apache.cloudstack.framework.transport.TransportPdu; |
| import org.apache.cloudstack.framework.transport.TransportProvider; |
| import org.apache.cloudstack.managed.context.ManagedContextRunnable; |
| import org.apache.logging.log4j.Logger; |
| import org.apache.logging.log4j.LogManager; |
| import org.bouncycastle.jce.provider.BouncyCastleProvider; |
| |
| import java.security.SecureRandom; |
| import java.security.Security; |
| import java.util.HashMap; |
| import java.util.Map; |
| import java.util.concurrent.ExecutorService; |
| import java.util.concurrent.Executors; |
| |
| public class ServerTransportProvider implements TransportProvider { |
| protected Logger logger = LogManager.getLogger(getClass()); |
| |
| public static final int DEFAULT_WORKER_POOL_SIZE = 5; |
| |
| private String _nodeId; |
| |
| private Map<String, TransportEndpointSite> _endpointMap = new HashMap<String, TransportEndpointSite>(); |
| private int _poolSize = DEFAULT_WORKER_POOL_SIZE; |
| private ExecutorService _executor; |
| private final SecureRandom randomGenerator; |
| private int _nextEndpointId; |
| |
| private MessageSerializer _messageSerializer; |
| |
| static { |
| BouncyCastleProvider provider = new BouncyCastleProvider(); |
| if (Security.getProvider(provider.getName()) == null) { |
| Security.addProvider(provider); |
| } |
| } |
| |
| public ServerTransportProvider() { |
| randomGenerator = new SecureRandom(); |
| _nextEndpointId = randomGenerator.nextInt(); |
| } |
| |
| public String getNodeId() { |
| return _nodeId; |
| } |
| |
| public ServerTransportProvider setNodeId(String nodeId) { |
| _nodeId = nodeId; |
| return this; |
| } |
| |
| public int getWorkerPoolSize() { |
| return _poolSize; |
| } |
| |
| public ServerTransportProvider setWorkerPoolSize(int poolSize) { |
| assert (poolSize > 0); |
| |
| _poolSize = poolSize; |
| return this; |
| } |
| |
| @Override |
| public void setMessageSerializer(MessageSerializer messageSerializer) { |
| assert (messageSerializer != null); |
| _messageSerializer = messageSerializer; |
| } |
| |
| @Override |
| public MessageSerializer getMessageSerializer() { |
| return _messageSerializer; |
| } |
| |
| public void initialize() { |
| _executor = Executors.newFixedThreadPool(_poolSize, new NamedThreadFactory("Transport-Worker")); |
| } |
| |
| @Override |
| public TransportEndpointSite attach(TransportEndpoint endpoint, String predefinedAddress) { |
| |
| TransportAddress transportAddress; |
| String endpointId; |
| if (predefinedAddress != null && !predefinedAddress.isEmpty()) { |
| endpointId = predefinedAddress; |
| transportAddress = new TransportAddress(_nodeId, TransportAddress.LOCAL_SERVICE_CONNECTION, endpointId, 0); |
| } else { |
| endpointId = String.valueOf(getNextEndpointId()); |
| transportAddress = new TransportAddress(_nodeId, TransportAddress.LOCAL_SERVICE_CONNECTION, endpointId); |
| } |
| |
| TransportEndpointSite endpointSite; |
| synchronized (this) { |
| endpointSite = _endpointMap.get(endpointId); |
| if (endpointSite != null) { |
| // already attached |
| return endpointSite; |
| } |
| endpointSite = new TransportEndpointSite(this, endpoint, transportAddress); |
| _endpointMap.put(endpointId, endpointSite); |
| } |
| |
| endpoint.onAttachConfirm(true, transportAddress.toString()); |
| return endpointSite; |
| } |
| |
| @Override |
| public boolean detach(TransportEndpoint endpoint) { |
| synchronized (this) { |
| for (Map.Entry<String, TransportEndpointSite> entry : _endpointMap.entrySet()) { |
| if (entry.getValue().getEndpoint() == endpoint) { |
| _endpointMap.remove(entry.getKey()); |
| return true; |
| } |
| } |
| } |
| |
| return false; |
| } |
| |
| @Override |
| public void requestSiteOutput(final TransportEndpointSite site) { |
| _executor.execute(new ManagedContextRunnable() { |
| @Override |
| protected void runInContext() { |
| try { |
| site.processOutput(); |
| site.ackOutputProcessSignal(); |
| } catch (Throwable e) { |
| logger.error("Unhandled exception", e); |
| } |
| } |
| }); |
| } |
| |
| @Override |
| public void sendMessage(String sourceEndpointAddress, String targetEndpointAddress, String multiplexier, String message) { |
| |
| TransportDataPdu pdu = new TransportDataPdu(); |
| pdu.setSourceAddress(sourceEndpointAddress); |
| pdu.setDestAddress(targetEndpointAddress); |
| pdu.setMultiplexier(multiplexier); |
| pdu.setContent(message); |
| |
| dispatchPdu(pdu); |
| } |
| |
| private void dispatchPdu(TransportPdu pdu) { |
| |
| TransportAddress transportAddress = TransportAddress.fromAddressString(pdu.getDestAddress()); |
| |
| if (isLocalAddress(transportAddress)) { |
| TransportEndpointSite endpointSite = null; |
| synchronized (this) { |
| endpointSite = _endpointMap.get(transportAddress.getEndpointId()); |
| } |
| |
| if (endpointSite != null) |
| endpointSite.addOutputPdu(pdu); |
| } else { |
| // do cross-node forwarding |
| // ??? |
| } |
| } |
| |
| private boolean isLocalAddress(TransportAddress address) { |
| if (address.getNodeId().equals(_nodeId) || address.getNodeId().equals(TransportAddress.LOCAL_SERVICE_NODE)) |
| return true; |
| |
| return false; |
| } |
| |
| private synchronized int getNextEndpointId() { |
| return _nextEndpointId++; |
| } |
| } |