| /** |
| * 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.activemq.proxy; |
| |
| import java.io.IOException; |
| import java.net.URI; |
| import java.net.URISyntaxException; |
| import java.util.Iterator; |
| import java.util.concurrent.CopyOnWriteArrayList; |
| import org.apache.activemq.Service; |
| import org.apache.activemq.transport.CompositeTransport; |
| import org.apache.activemq.transport.Transport; |
| import org.apache.activemq.transport.TransportAcceptListener; |
| import org.apache.activemq.transport.TransportFactory; |
| import org.apache.activemq.transport.TransportFilter; |
| import org.apache.activemq.transport.TransportServer; |
| import org.apache.activemq.util.ServiceStopper; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * @org.apache.xbean.XBean |
| * |
| * |
| */ |
| public class ProxyConnector implements Service { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(ProxyConnector.class); |
| private TransportServer server; |
| private URI bind; |
| private URI remote; |
| private URI localUri; |
| private String name; |
| /** |
| * Should we proxy commands to the local broker using VM transport as well? |
| */ |
| private boolean proxyToLocalBroker = true; |
| |
| private final CopyOnWriteArrayList<ProxyConnection> connections = new CopyOnWriteArrayList<ProxyConnection>(); |
| |
| public void start() throws Exception { |
| |
| this.getServer().setAcceptListener(new TransportAcceptListener() { |
| public void onAccept(Transport localTransport) { |
| try { |
| Transport remoteTransport = createRemoteTransport(); |
| ProxyConnection connection = new ProxyConnection(localTransport, remoteTransport); |
| connections.add(connection); |
| connection.start(); |
| } catch (Exception e) { |
| onAcceptError(e); |
| } |
| } |
| |
| public void onAcceptError(Exception error) { |
| LOG.error("Could not accept connection: " + error, error); |
| } |
| }); |
| getServer().start(); |
| LOG.info("Proxy Connector " + getName() + " Started"); |
| |
| } |
| |
| public void stop() throws Exception { |
| ServiceStopper ss = new ServiceStopper(); |
| if (this.server != null) { |
| ss.stop(this.server); |
| } |
| for (Iterator<ProxyConnection> iter = connections.iterator(); iter.hasNext();) { |
| LOG.info("Connector stopped: Stopping proxy."); |
| ss.stop(iter.next()); |
| } |
| ss.throwFirstException(); |
| LOG.info("Proxy Connector " + getName() + " Stopped"); |
| } |
| |
| // Properties |
| // ------------------------------------------------------------------------- |
| |
| public URI getLocalUri() { |
| return localUri; |
| } |
| |
| public void setLocalUri(URI localURI) { |
| this.localUri = localURI; |
| } |
| |
| public URI getBind() { |
| return bind; |
| } |
| |
| public void setBind(URI bind) { |
| this.bind = bind; |
| } |
| |
| public URI getRemote() { |
| return remote; |
| } |
| |
| public void setRemote(URI remote) { |
| this.remote = remote; |
| } |
| |
| public TransportServer getServer() throws IOException, URISyntaxException { |
| if (server == null) { |
| server = createServer(); |
| } |
| return server; |
| } |
| |
| public void setServer(TransportServer server) { |
| this.server = server; |
| } |
| |
| protected TransportServer createServer() throws IOException, URISyntaxException { |
| if (bind == null) { |
| throw new IllegalArgumentException("You must specify either a server or the bind property"); |
| } |
| return TransportFactory.bind(bind); |
| } |
| |
| private Transport createRemoteTransport() throws Exception { |
| Transport transport = TransportFactory.compositeConnect(remote); |
| CompositeTransport ct = transport.narrow(CompositeTransport.class); |
| if (ct != null && localUri != null && proxyToLocalBroker) { |
| ct.add(false,new URI[] {localUri}); |
| } |
| |
| // Add a transport filter so that we can track the transport life cycle |
| transport = new TransportFilter(transport) { |
| @Override |
| public void stop() throws Exception { |
| LOG.info("Stopping proxy."); |
| super.stop(); |
| connections.remove(this); |
| } |
| }; |
| return transport; |
| } |
| |
| public String getName() { |
| if (name == null) { |
| if (server != null) { |
| name = server.getConnectURI().toString(); |
| } else { |
| name = "proxy"; |
| } |
| } |
| return name; |
| } |
| |
| public void setName(String name) { |
| this.name = name; |
| } |
| |
| public boolean isProxyToLocalBroker() { |
| return proxyToLocalBroker; |
| } |
| |
| public void setProxyToLocalBroker(boolean proxyToLocalBroker) { |
| this.proxyToLocalBroker = proxyToLocalBroker; |
| } |
| |
| } |