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/*
*
* 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.management.wsdm;
import java.lang.management.ManagementFactory;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.qpid.management.Messages;
import org.apache.qpid.management.Names;
import org.apache.qpid.transport.util.Logger;
/**
* QPid Emulator Initializer.
* This component is basically responsible to create and initialize
* an emulator module used for simulate object instances creation.
*
* @author Andrea Gazzarini
*/
public class QEmuInitializer extends HttpServlet
{
private static final long serialVersionUID = 6149614872902682208L;
private final static Logger LOGGER = Logger.get(QEmuInitializer.class);
/**
* QEmu initialization method.
*
* @throws ServletException when the module cannot be initialized.
*/
public void init() throws ServletException
{
try
{
ManagementFactory.getPlatformMBeanServer().registerMBean(
new QEmu(),
Names.QPID_EMULATOR_OBJECT_NAME);
} catch(Exception exception)
{
LOGGER.warn(
exception,
Messages.QMAN_300005_QEMU_INITIALIZATION_FAILURE);
throw new ServletException(exception);
}
}
/**
* This is a startup module only so an override of the
* default servlet behaviour must be done in order to
* prevent incoming http requests processing.
*
* @param request the http request.
* @param response the http response.
* @throws ServletException each time this method is called.
*/
@Override
public void service(HttpServletRequest request,HttpServletResponse response) throws ServletException
{
throw new ServletException();
}
/**
* Unregister QPid emulator.
*/
public void destroy()
{
try
{
ManagementFactory.getPlatformMBeanServer().unregisterMBean(
Names.QPID_EMULATOR_OBJECT_NAME);
} catch (Exception exception)
{
}
}
}
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