/*
* JBoss, Home of Professional Open Source.
* Copyright 2011, Red Hat, Inc., and individual contributors
* as indicated by the @author tags. See the copyright.txt file 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.as.ejb3.remote.protocol.versionone;
import org.jboss.as.ee.component.Component;
import org.jboss.as.ejb3.component.stateful.StatefulSessionComponent;
import org.jboss.as.ejb3.deployment.DeploymentRepository;
import org.jboss.as.ejb3.deployment.EjbDeploymentInformation;
import org.jboss.ejb.client.SessionID;
import org.jboss.ejb.client.remoting.PackedInteger;
import org.jboss.ejb.client.remoting.RemotingAttachments;
import org.jboss.logging.Logger;
import org.jboss.remoting3.Channel;
import org.jboss.remoting3.MessageInputStream;
import org.xnio.IoUtils;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.util.concurrent.ExecutorService;
/**
* User: jpai
*/
class SessionOpenRequestHandler extends EJBIdentifierBasedMessageHandler {
private static final Logger logger = Logger.getLogger(SessionOpenRequestHandler.class);
private static final byte HEADER_SESSION_OPEN_RESPONSE = 0x02;
private static final byte HEADER_EJB_NOT_STATEFUL = 0x0D;
private final ExecutorService executorService;
SessionOpenRequestHandler(final DeploymentRepository deploymentRepository, final String marshallingStrategy, final ExecutorService executorService) {
super(deploymentRepository, marshallingStrategy);
this.executorService = executorService;
}
@Override
public void processMessage(Channel channel, MessageInputStream messageInputStream) throws IOException {
if (messageInputStream == null) {
throw new IllegalArgumentException("Cannot read from null message inputstream");
}
final DataInputStream dataInputStream = new DataInputStream(messageInputStream);
// read invocation id
final short invocationId = dataInputStream.readShort();
final String appName = dataInputStream.readUTF();
final String moduleName = dataInputStream.readUTF();
final String distinctName = dataInputStream.readUTF();
final String beanName = dataInputStream.readUTF();
final EjbDeploymentInformation ejbDeploymentInformation = this.findEJB(appName, moduleName, distinctName, beanName);
if (ejbDeploymentInformation == null) {
this.writeNoSuchEJBFailureMessage(channel, invocationId, appName, moduleName, distinctName, beanName, null);
return;
}
final Component component = ejbDeploymentInformation.getEjbComponent();
if (!(component instanceof StatefulSessionComponent)) {
final String failureMessage = "EJB " + beanName + " is not a Stateful Session bean in app: " + appName + " module: " + moduleName + " distinct name:" + distinctName;
this.writeInvocationFailure(channel, HEADER_EJB_NOT_STATEFUL, invocationId, failureMessage);
return;
}
// read the attachments
final RemotingAttachments attachments = this.readAttachments(dataInputStream);
final StatefulSessionComponent statefulSessionComponent = (StatefulSessionComponent) component;
// generate the session id and write out the response on a separate thread
executorService.submit(new SessionIDGeneratorTask(statefulSessionComponent, channel, invocationId, attachments));
}
private void writeSessionId(final Channel channel, final short invocationId, final SessionID sessionID, final RemotingAttachments attachments) throws IOException {
final byte[] sessionIdBytes = sessionID.getEncodedForm();
final DataOutputStream dataOutputStream = new DataOutputStream(channel.writeMessage());
try {
// write out header
dataOutputStream.writeByte(HEADER_SESSION_OPEN_RESPONSE);
// write out invocation id
dataOutputStream.writeShort(invocationId);
// session id byte length
PackedInteger.writePackedInteger(dataOutputStream, sessionIdBytes.length);
// write out the session id bytes
dataOutputStream.write(sessionIdBytes);
// write out the attachments
this.writeAttachments(dataOutputStream, attachments);
} finally {
dataOutputStream.close();
}
}
/**
* Task for generation a session id when a session open request is received
*/
private class SessionIDGeneratorTask implements Runnable {
private final StatefulSessionComponent statefulSessionComponent;
private final Channel channel;
private final short invocationId;
private final RemotingAttachments attachments;
SessionIDGeneratorTask(final StatefulSessionComponent statefulSessionComponent, final Channel channel, final short invocationId, final RemotingAttachments attachments) {
this.statefulSessionComponent = statefulSessionComponent;
this.invocationId = invocationId;
this.attachments = attachments;
this.channel = channel;
}
@Override
public void run() {
final SessionID sessionID;
try {
try {
sessionID = statefulSessionComponent.createSession();
} catch (Throwable t) {
SessionOpenRequestHandler.this.writeException(channel, invocationId, t, attachments);
return;
}
SessionOpenRequestHandler.this.writeSessionId(channel, invocationId, sessionID, attachments);
} catch (IOException ioe) {
logger.error("IOException while generating session id for invocation id: " + invocationId + " on channel " + channel, ioe);
// close the channel
IoUtils.safeClose(this.channel);
return;
}
}
}
}