diff options
Diffstat (limited to 'trunk/qpid/java/client/src/main/java/org/apache/qpid/client/transport/TransportConnection.java')
| -rw-r--r-- | trunk/qpid/java/client/src/main/java/org/apache/qpid/client/transport/TransportConnection.java | 353 |
1 files changed, 353 insertions, 0 deletions
diff --git a/trunk/qpid/java/client/src/main/java/org/apache/qpid/client/transport/TransportConnection.java b/trunk/qpid/java/client/src/main/java/org/apache/qpid/client/transport/TransportConnection.java new file mode 100644 index 0000000000..a4f8bb0166 --- /dev/null +++ b/trunk/qpid/java/client/src/main/java/org/apache/qpid/client/transport/TransportConnection.java @@ -0,0 +1,353 @@ +/* + * + * 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.qpid.client.transport; + +import java.io.IOException; +import java.net.Socket; +import java.util.HashMap; +import java.util.Map; +import java.util.concurrent.ConcurrentHashMap; + +import org.apache.mina.common.IoConnector; +import org.apache.mina.common.IoHandlerAdapter; +import org.apache.mina.common.IoServiceConfig; +import org.apache.mina.transport.socket.nio.ExistingSocketConnector; +import org.apache.mina.transport.socket.nio.MultiThreadSocketConnector; +import org.apache.mina.transport.socket.nio.SocketConnector; +import org.apache.mina.transport.vmpipe.VmPipeAcceptor; +import org.apache.mina.transport.vmpipe.VmPipeAddress; +import org.apache.qpid.client.vmbroker.AMQVMBrokerCreationException; +import org.apache.qpid.jms.BrokerDetails; +import org.apache.qpid.protocol.ProtocolEngineFactory; +import org.apache.qpid.thread.QpidThreadExecutor; +import org.apache.qpid.transport.network.mina.MINANetworkDriver; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +/** + * The TransportConnection is a helper class responsible for connecting to an AMQ server. It sets up the underlying + * connector, which currently always uses TCP/IP sockets. It creates the "protocol handler" which deals with MINA + * protocol events. <p/> Could be extended in future to support different transport types by turning this into concrete + * class/interface combo. + */ +public class TransportConnection +{ + private static ITransportConnection _instance; + + private static Map _inVmPipeAddress = new HashMap(); + private static VmPipeAcceptor _acceptor; + private static int _currentInstance = -1; + private static int _currentVMPort = -1; + + private static final int TCP = 0; + private static final int VM = 1; + private static final int SOCKET = 2; + + private static Logger _logger = LoggerFactory.getLogger(TransportConnection.class); + + private static final String DEFAULT_QPID_SERVER = "org.apache.qpid.server.protocol.AMQProtocolEngineFactory"; + + private static Map<String, Socket> _openSocketRegister = new ConcurrentHashMap<String, Socket>(); + + public static void registerOpenSocket(String socketID, Socket openSocket) + { + _openSocketRegister.put(socketID, openSocket); + } + + public static Socket removeOpenSocket(String socketID) + { + return _openSocketRegister.remove(socketID); + } + + public static synchronized ITransportConnection getInstance(final BrokerDetails details) throws AMQTransportConnectionException + { + int transport = getTransport(details.getTransport()); + + if (transport == -1) + { + throw new AMQNoTransportForProtocolException(details, null, null); + } + + switch (transport) + { + case SOCKET: + return new SocketTransportConnection(new SocketTransportConnection.SocketConnectorFactory() + { + public IoConnector newSocketConnector() + { + ExistingSocketConnector connector = new ExistingSocketConnector(1,new QpidThreadExecutor()); + + Socket socket = TransportConnection.removeOpenSocket(details.getHost()); + + if (socket != null) + { + _logger.info("Using existing Socket:" + socket); + + ((ExistingSocketConnector) connector).setOpenSocket(socket); + } + else + { + throw new IllegalArgumentException("Active Socket must be provided for broker " + + "with 'socket://<SocketID>' transport:" + details); + } + return connector; + } + }); + case TCP: + return new SocketTransportConnection(new SocketTransportConnection.SocketConnectorFactory() + { + public IoConnector newSocketConnector() + { + SocketConnector result; + // FIXME - this needs to be sorted to use the new Mina MultiThread SA. + if (Boolean.getBoolean("qpidnio")) + { + _logger.warn("Using Qpid MultiThreaded NIO - " + (System.getProperties().containsKey("qpidnio") + ? "Qpid NIO is new default" + : "Sysproperty 'qpidnio' is set")); + result = new MultiThreadSocketConnector(1, new QpidThreadExecutor()); + } + else + { + _logger.info("Using Mina NIO"); + result = new SocketConnector(1, new QpidThreadExecutor()); // non-blocking connector + } + // Don't have the connector's worker thread wait around for other connections (we only use + // one SocketConnector per connection at the moment anyway). This allows short-running + // clients (like unit tests) to complete quickly. + result.setWorkerTimeout(0); + return result; + } + }); + case VM: + { + return getVMTransport(details, Boolean.getBoolean("amqj.AutoCreateVMBroker")); + } + default: + throw new AMQNoTransportForProtocolException(details, "Transport not recognised:" + transport, null); + } + } + + private static int getTransport(String transport) + { + if (transport.equals(BrokerDetails.SOCKET)) + { + return SOCKET; + } + + if (transport.equals(BrokerDetails.TCP)) + { + return TCP; + } + + if (transport.equals(BrokerDetails.VM)) + { + return VM; + } + + return -1; + } + + private static ITransportConnection getVMTransport(BrokerDetails details, boolean AutoCreate) + throws AMQVMBrokerCreationException + { + int port = details.getPort(); + + synchronized (_inVmPipeAddress) + { + if (!_inVmPipeAddress.containsKey(port)) + { + if (AutoCreate) + { + if (AutoCreate) + { + _logger.warn("Auto Creating InVM Broker on port:" + port); + createVMBroker(port); + } + else + { + throw new AMQVMBrokerCreationException(null, port, "VM Broker on port " + port + + " does not exist. Auto create disabled.", null); + } + } + else + { + throw new AMQVMBrokerCreationException(null, port, "VM Broker on port " + port + + " does not exist. Auto create disabled.", null); + } + } + } + + return new VmPipeTransportConnection(port); + } + + public static void createVMBroker(int port) throws AMQVMBrokerCreationException + { + if (_acceptor == null) + { + _acceptor = new VmPipeAcceptor(); + + IoServiceConfig config = _acceptor.getDefaultConfig(); + } + synchronized (_inVmPipeAddress) + { + + if (!_inVmPipeAddress.containsKey(port)) + { + _logger.info("Creating InVM Qpid.AMQP listening on port " + port); + IoHandlerAdapter provider = null; + try + { + VmPipeAddress pipe = new VmPipeAddress(port); + + provider = createBrokerInstance(port); + + _acceptor.bind(pipe, provider); + + _inVmPipeAddress.put(port, pipe); + _logger.info("Created InVM Qpid.AMQP listening on port " + port); + } + catch (IOException e) + { + _logger.error("Got IOException.", e); + + // Try and unbind provider + try + { + VmPipeAddress pipe = new VmPipeAddress(port); + + try + { + _acceptor.unbind(pipe); + } + catch (Exception ignore) + { + // ignore + } + + if (provider == null) + { + provider = createBrokerInstance(port); + } + + _acceptor.bind(pipe, provider); + _inVmPipeAddress.put(port, pipe); + _logger.info("Created InVM Qpid.AMQP listening on port " + port); + } + catch (IOException justUseFirstException) + { + String because; + if (e.getCause() == null) + { + because = e.toString(); + } + else + { + because = e.getCause().toString(); + } + + throw new AMQVMBrokerCreationException(null, port, because + " Stopped binding of InVM Qpid.AMQP", e); + } + } + + } + else + { + _logger.info("InVM Qpid.AMQP on port " + port + " already exits."); + } + } + } + + private static IoHandlerAdapter createBrokerInstance(int port) throws AMQVMBrokerCreationException + { + String protocolProviderClass = System.getProperty("amqj.protocolprovider.class", DEFAULT_QPID_SERVER); + _logger.info("Creating Qpid protocol provider: " + protocolProviderClass); + + // can't use introspection to get Provider as it is a server class. + // need to go straight to IoHandlerAdapter but that requries the queues and exchange from the ApplicationRegistry which we can't access. + + // get right constructor and pass in instancec ID - "port" + IoHandlerAdapter provider; + try + { + Class[] cnstr = {Integer.class}; + Object[] params = {port}; + + provider = new MINANetworkDriver(); + ProtocolEngineFactory engineFactory = (ProtocolEngineFactory) Class.forName(protocolProviderClass).getConstructor(cnstr).newInstance(params); + ((MINANetworkDriver) provider).setProtocolEngineFactory(engineFactory, true); + // Give the broker a second to create + _logger.info("Created VMBroker Instance:" + port); + } + catch (Exception e) + { + _logger.info("Unable to create InVM Qpid.AMQP on port " + port + ". Because: " + e.getCause()); + String because; + if (e.getCause() == null) + { + because = e.toString(); + } + else + { + because = e.getCause().toString(); + } + + AMQVMBrokerCreationException amqbce = + new AMQVMBrokerCreationException(null, port, because + " Stopped InVM Qpid.AMQP creation", e); + throw amqbce; + } + + return provider; + } + + public static void killAllVMBrokers() + { + _logger.info("Killing all VM Brokers"); + if (_acceptor != null) + { + _acceptor.unbindAll(); + } + synchronized (_inVmPipeAddress) + { + _inVmPipeAddress.clear(); + } + _acceptor = null; + _currentInstance = -1; + _currentVMPort = -1; + } + + public static void killVMBroker(int port) + { + synchronized (_inVmPipeAddress) + { + VmPipeAddress pipe = (VmPipeAddress) _inVmPipeAddress.get(port); + if (pipe != null) + { + _logger.info("Killing VM Broker:" + port); + _inVmPipeAddress.remove(port); + // This does need to be sychronized as otherwise mina can hang + // if a new connection is made + _acceptor.unbind(pipe); + } + } + } + +} |