/*
* JBoss, Home of Professional Open Source.
* Copyright 2006, Red Hat Middleware LLC, 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.protocol.mgmt;
import static org.jboss.as.protocol.StreamUtils.safeClose;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import org.jboss.as.protocol.ByteDataInput;
import org.jboss.as.protocol.ByteDataOutput;
import org.jboss.as.protocol.Connection;
import org.jboss.as.protocol.MessageHandler;
import org.jboss.as.protocol.SimpleByteDataInput;
import org.jboss.as.protocol.SimpleByteDataOutput;
/**
*
* @author <a href="kabir.khan@jboss.com">Kabir Khan</a>
* @version $Revision: 1.1 $
*/
public abstract class ManagementHeaderMessageHandler extends AbstractMessageHandler {
public void handle(Connection connection, InputStream dataStream) throws IOException {
final int workingVersion;
final ManagementRequestHeader requestHeader;
final MessageHandler handler;
ByteDataInput input = null;
try {
input = new SimpleByteDataInput(dataStream);
// Start by reading the request header
requestHeader = new ManagementRequestHeader(input);
// Work with the lowest protocol version
workingVersion = Math.min(ManagementProtocol.VERSION, requestHeader.getVersion());
byte handlerId = requestHeader.getOperationHandlerId();
if (handlerId == -1) {
throw new IOException("Management request failed. Invalid handler id");
}
handler = getHandlerForId(handlerId);
if (handler == null) {
String msg = "Management request failed. No handler found for id " + handlerId;
throw new IOException(msg);
}
connection.setMessageHandler(handler);
} catch (IOException e) {
throw e;
} catch (Throwable t) {
throw new IOException("Failed to read request header", t);
} finally {
safeClose(input);
safeClose(dataStream);
}
OutputStream dataOutput = null;
ByteDataOutput output = null;
try {
dataOutput = connection.writeMessage();
output = new SimpleByteDataOutput(dataOutput);
// Now write the response header
final ManagementResponseHeader responseHeader = new ManagementResponseHeader(workingVersion, requestHeader.getRequestId());
responseHeader.write(output);
output.close();
dataOutput.close();
} catch (IOException e) {
throw e;
} catch (Throwable t) {
throw new IOException("Failed to write management response headers", t);
} finally {
safeClose(output);
safeClose(dataOutput);
}
}
protected abstract MessageHandler getHandlerForId(byte handlerId);
}