/*
* JBoss, Home of Professional Open Source
* Copyright 2005, JBoss Inc., and individual contributors as indicated
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.jms.client.delegate;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.Serializable;
import java.util.HashMap;
import java.util.Map;
import javax.jms.JMSException;
import org.jboss.jms.client.container.JMSClientVMIdentifier;
import org.jboss.jms.client.remoting.JMSRemotingConnection;
import org.jboss.jms.delegate.ConnectionFactoryDelegate;
import org.jboss.jms.server.ServerPeer;
import org.jboss.jms.server.Version;
import org.jboss.jms.server.endpoint.CreateConnectionResult;
import org.jboss.jms.server.remoting.JMSWireFormat;
import org.jboss.jms.util.MessagingNetworkFailureException;
import org.jboss.jms.wireformat.ConnectionFactoryCreateConnectionDelegateRequest;
import org.jboss.jms.wireformat.ConnectionFactoryGetClientAOPStackRequest;
import org.jboss.jms.wireformat.ResponseSupport;
import org.jboss.remoting.Client;
import org.jboss.remoting.InvokerLocator;
/**
* The client-side ConnectionFactory delegate class.
*
* @author <a href="mailto:tim.fox@jboss.com">Tim Fox</a>
* @author <a href="mailto:ovidiu@jboss.org">Ovidiu Feodorov</a>
*
* @version <tt>$Revision: 2492 $</tt>
*
* $Id: ClientConnectionFactoryDelegate.java 2492 2007-02-28 07:00:38Z ovidiu.feodorov@jboss.com $
*/
public class ClientConnectionFactoryDelegate
extends DelegateSupport implements ConnectionFactoryDelegate, Serializable
{
// Constants ------------------------------------------------------------------------------------
private static final long serialVersionUID = 2512460695662741413L;
// Attributes -----------------------------------------------------------------------------------
//This data is needed in order to create a connection
private String serverLocatorURI;
private Version serverVersion;
private int serverID;
private boolean clientPing;
// Static ---------------------------------------------------------------------------------------
/*
* Calculate what version to use.
* The client itself has a version, but we also support other versions of servers lower if the
* connection version is lower (backwards compatibility)
*/
public static Version getVersionToUse(Version connectionVersion)
{
Version clientVersion = Version.instance();
Version versionToUse;
if (connectionVersion.getProviderIncrementingVersion() <=
clientVersion.getProviderIncrementingVersion())
{
versionToUse = connectionVersion;
}
else
{
versionToUse = clientVersion;
}
return versionToUse;
}
// Constructors ---------------------------------------------------------------------------------
public ClientConnectionFactoryDelegate(int objectID, int serverID, String serverLocatorURI,
Version serverVersion, boolean clientPing)
{
super(objectID);
this.serverID = serverID;
this.serverLocatorURI = serverLocatorURI;
this.serverVersion = serverVersion;
this.clientPing = clientPing;
}
public ClientConnectionFactoryDelegate()
{
}
// ConnectionFactoryDelegate implementation -----------------------------------------------------
public CreateConnectionResult createConnectionDelegate(String username,
String password,
int failedNodeID)
throws JMSException
{
// If the method being invoked is createConnectionDelegate() then we must invoke it on the
// same remoting client subsequently used by the connection. This is because we need to pass
// in the remoting session id in the call to createConnection. All other invocations can be
// invoked on an arbitrary client, which can be created for each invocation.
//
// If we disable pinging on the client then it is a reasonably light weight operation to
// create the client since it will use the already existing invoker. This prevents us from
// having to maintain a Client instance per connection factory, which gives difficulties in
// knowing when to close it.
Version version = getVersionToUse(serverVersion);
byte v = version.getProviderIncrementingVersion();
JMSRemotingConnection remotingConnection = null;
CreateConnectionResult res;
try
{
remotingConnection = new JMSRemotingConnection(serverLocatorURI, clientPing);
remotingConnection.start();
Client client = remotingConnection.getRemotingClient();
String remotingSessionId = client.getSessionId();
String clientVMId = JMSClientVMIdentifier.instance;
ConnectionFactoryCreateConnectionDelegateRequest req =
new ConnectionFactoryCreateConnectionDelegateRequest(id, v,
remotingSessionId, clientVMId,
username, password, failedNodeID);
ResponseSupport rs = (ResponseSupport)client.invoke(req, null);
res = (CreateConnectionResult)rs.getResponse();
}
catch (Throwable t)
{
//If we were invoking createConnectionDelegate and failure occurs then we need to clear
// up the JMSRemotingConnection
if (remotingConnection != null)
{
try
{
remotingConnection.stop();
}
catch (Throwable ignore)
{
}
}
throw handleThrowable(t);
}
ClientConnectionDelegate connectionDelegate = (ClientConnectionDelegate)res.getDelegate();
if (connectionDelegate != null)
{
connectionDelegate.setRemotingConnection(remotingConnection);
connectionDelegate.setVersionToUse(version);
remotingConnection.getCallbackManager().setConnectionDelegate(connectionDelegate);
}
else
{
//Wrong server redirect on failure
//close the remoting connection
try
{
remotingConnection.stop();
}
catch (Throwable ignore)
{
}
}
return res;
}
public byte[] getClientAOPStack() throws JMSException
{
Version version = getVersionToUse(serverVersion);
byte v = version.getProviderIncrementingVersion();
// Create a client - make sure pinging is off
Map configuration = new HashMap();
configuration.put(Client.ENABLE_LEASE, String.valueOf(false));
//We execute this on its own client
Client theClient = createClient();
ConnectionFactoryGetClientAOPStackRequest req =
new ConnectionFactoryGetClientAOPStackRequest(id, v);
return (byte[])doInvoke(theClient, req);
}
// Public ---------------------------------------------------------------------------------------
public String toString()
{
return "ConnectionFactoryDelegate[" + id + ", SID=" + serverID + "]";
}
public String getServerLocatorURI()
{
return serverLocatorURI;
}
public int getServerID()
{
return serverID;
}
public boolean getClientPing()
{
return clientPing;
}
public Version getServerVersion()
{
return serverVersion;
}
public void synchronizeWith(DelegateSupport newDelegate) throws Exception
{
super.synchronizeWith(newDelegate);
}
// Protected ------------------------------------------------------------------------------------
// Package Private ------------------------------------------------------------------------------
// Private --------------------------------------------------------------------------------------
private Client createClient() throws JMSException
{
// Create a client - make sure pinging is off
Map configuration = new HashMap();
configuration.put(Client.ENABLE_LEASE, String.valueOf(false));
//We execute this on it's own client
Client client;
try
{
client = new Client(new InvokerLocator(serverLocatorURI), configuration);
client.setSubsystem(ServerPeer.REMOTING_JMS_SUBSYSTEM);
client.connect();
}
catch (Exception e)
{
throw new MessagingNetworkFailureException("Failed to connect client", e);
}
client.setMarshaller(new JMSWireFormat());
client.setUnMarshaller(new JMSWireFormat());
return client;
}
// Streamable implementation --------------------------------------------
public void read(DataInputStream in) throws Exception
{
super.read(in);
serverLocatorURI = in.readUTF();
serverVersion = new Version();
serverVersion.read(in);
serverID = in.readInt();
clientPing = in.readBoolean();
}
public void write(DataOutputStream out) throws Exception
{
super.write(out);
out.writeUTF(serverLocatorURI);
serverVersion.write(out);
out.writeInt(serverID);
out.writeBoolean(clientPing);
}
// Inner Classes --------------------------------------------------------------------------------
}