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Posted to scm@geronimo.apache.org by da...@apache.org on 2003/11/11 05:40:11 UTC
cvs commit: incubator-geronimo/modules/kernel/src/java/org/apache/geronimo/kernel/deployment/task DeployGeronimoMBean.java
dain 2003/11/10 20:40:11
Added: modules/kernel/src/java/org/apache/geronimo/kernel/deployment/task
DeployGeronimoMBean.java
Log:
Initial revision of deployment task just for GeronimoMbeans
Revision Changes Path
1.1 incubator-geronimo/modules/kernel/src/java/org/apache/geronimo/kernel/deployment/task/DeployGeronimoMBean.java
Index: DeployGeronimoMBean.java
===================================================================
/* ====================================================================
* The Apache Software License, Version 1.1
*
* Copyright (c) 2003 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Apache" and "Apache Software Foundation" and
* "Apache Geronimo" must not be used to endorse or promote products
* derived from this software without prior written permission. For
* written permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache",
* "Apache Geronimo", nor may "Apache" appear in their name, without
* prior written permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
* ====================================================================
*/
package org.apache.geronimo.kernel.deployment.task;
import java.net.URL;
import javax.management.InstanceNotFoundException;
import javax.management.MBeanException;
import javax.management.MBeanRegistrationException;
import javax.management.MBeanServer;
import javax.management.ObjectName;
import javax.management.ReflectionException;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.geronimo.kernel.classspace.ClassSpaceException;
import org.apache.geronimo.kernel.classspace.ClassSpaceUtil;
import org.apache.geronimo.kernel.deployment.DeploymentException;
import org.apache.geronimo.kernel.deployment.service.MBeanMetadata;
import org.apache.geronimo.kernel.service.GeronimoMBean;
import org.apache.geronimo.kernel.service.GeronimoMBeanInfo;
import org.apache.geronimo.kernel.service.GeronimoMBeanInfoXMLLoader;
/**
*
*
* @version $Revision: 1.1 $ $Date: 2003/11/11 04:40:11 $
*/
public class DeployGeronimoMBean implements DeploymentTask {
private static final Log log = LogFactory.getLog(DeployGeronimoMBean.class);
private final MBeanServer server;
private final MBeanMetadata metadata;
private boolean registered;
public DeployGeronimoMBean(MBeanServer server, MBeanMetadata mbeanMetadata) {
this.server = server;
this.metadata = mbeanMetadata;
}
public boolean canRun() throws DeploymentException {
ObjectName loaderName = metadata.getLoaderName();
if (loaderName != null && !server.isRegistered(loaderName)) {
log.trace("Cannot run because class space is not registered: loaderName=" + loaderName);
return false;
}
return true;
}
public void perform() throws DeploymentException {
ClassLoader oldCL = Thread.currentThread().getContextClassLoader();
ClassLoader newCL;
// create an MBean instance
try {
// Set the class loader
try {
newCL = ClassSpaceUtil.setContextClassLoader(server, metadata.getLoaderName());
} catch (ClassSpaceException e) {
throw new DeploymentException(e);
}
// Create and register the MBean
try {
if (log.isTraceEnabled()) {
log.trace("Creating GeronimoMBean name=" + metadata.getName());
}
GeronimoMBean mbean = (GeronimoMBean) server.instantiate("org.apache.geronimo.kernel.service.GeronimoMBean");
mbean.setClassSpace(metadata.getLoaderName());
String descriptorName = metadata.getGeronimoMBeanDescriptor();
URL url = newCL.getResource(descriptorName);
if(url == null) {
throw new DeploymentException("GeronimoMBean descriptor not found: " + descriptorName);
}
GeronimoMBeanInfo geronimoMBeanInfo = GeronimoMBeanInfoXMLLoader.loadMBean(url);
mbean.setMBeanInfo(geronimoMBeanInfo);
server.registerMBean(mbean, metadata.getName());
registered = true;
// Add the mbean to it's parent
ObjectName parentName = metadata.getParentName();
if (parentName != null) {
server.invoke(metadata.getParentName(), "addChild", new Object[]{metadata.getName()}, new String[]{"javax.management.ObjectName"});
}
} catch (Exception e) {
throw new DeploymentException(e, metadata);
}
} catch (DeploymentException e) {
undo();
throw e;
} finally {
Thread.currentThread().setContextClassLoader(oldCL);
}
}
public void undo() {
if (!registered) {
return;
}
ObjectName objectName = metadata.getName();
ClassLoader oldCL = Thread.currentThread().getContextClassLoader();
try {
// Set the class loader
try {
ClassSpaceUtil.setContextClassLoader(server, metadata.getLoaderName());
} catch (ClassSpaceException e) {
log.warn("Could not set context class loader", e);
return;
}
try {
server.invoke(metadata.getParentName(), "removeChild", new Object[]{objectName}, new String[]{"javax.management.ObjectName"});
} catch (InstanceNotFoundException e) {
log.warn("Could not remove from parent", e);
} catch (MBeanException e) {
log.error("Error while removing MBean " + objectName + " from parent", e);
} catch (ReflectionException e) {
log.error("Error while removing MBean " + objectName + " from parent", e);
}
try {
server.unregisterMBean(objectName);
} catch (InstanceNotFoundException e) {
log.warn("MBean was already removed " + objectName, e);
return;
} catch (MBeanRegistrationException e) {
log.error("Error while unregistering MBean " + objectName, e);
}
} finally {
Thread.currentThread().setContextClassLoader(oldCL);
}
}
public String toString() {
return "DeployGeronimoMBean " + metadata.getName();
}
}