/**
*
* Copyright 2005 The Apache Software Foundation
*
* Licensed 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.geronimo.kernel.config;
import java.util.Set;
import java.util.Iterator;
import javax.management.ObjectName;
import org.apache.geronimo.kernel.jmx.JMXUtil;
import org.apache.geronimo.kernel.Kernel;
import org.apache.geronimo.kernel.GBeanNotFoundException;
import org.apache.geronimo.kernel.management.State;
import org.apache.geronimo.gbean.GBeanQuery;
/**
* @version $Rev: 355877 $ $Date: 2005-12-10 18:48:27 -0800 (Sat, 10 Dec 2005) $
*/
public final class ConfigurationUtil {
private ConfigurationUtil() {
}
/**
* Gets a reference or proxy to the ConfigurationManager running in the specified kernel.
*
* @return The ConfigurationManager
*
* @throws IllegalStateException Occurs if a ConfigurationManager cannot be identified
*/
public static ConfigurationManager getConfigurationManager(Kernel kernel) {
Set names = kernel.listGBeans(new GBeanQuery(null, ConfigurationManager.class.getName()));
for (Iterator iterator = names.iterator(); iterator.hasNext();) {
ObjectName objectName = (ObjectName) iterator.next();
try {
if (kernel.getGBeanState(objectName) != State.RUNNING_INDEX) {
iterator.remove();
}
} catch (GBeanNotFoundException e) {
// bean died
iterator.remove();
}
}
if (names.isEmpty()) {
throw new IllegalStateException("Configuration mananger could not be found in kernel");
}
if (names.size() > 1) {
throw new IllegalStateException("More than one configuration mananger was found in kernel");
}
ObjectName configurationManagerName = (ObjectName) names.iterator().next();
return (ConfigurationManager) kernel.getProxyManager().createProxy(configurationManagerName, ConfigurationManager.class);
}
/**
* Gets a reference or proxy to an EditableConfigurationManager running in the specified kernel, if there is one.
*
* @return The EdtiableConfigurationManager, or none if there is not one available.
*
* @throws IllegalStateException Occurs if there are multiple EditableConfigurationManagers in the kernel.
*/
public static EditableConfigurationManager getEditableConfigurationManager(Kernel kernel) {
Set names = kernel.listGBeans(new GBeanQuery(null, EditableConfigurationManager.class.getName()));
for (Iterator iterator = names.iterator(); iterator.hasNext();) {
ObjectName objectName = (ObjectName) iterator.next();
try {
if (kernel.getGBeanState(objectName) != State.RUNNING_INDEX) {
iterator.remove();
}
} catch (GBeanNotFoundException e) {
// bean died
iterator.remove();
}
}
if (names.isEmpty()) {
return null; // may be one, just not editable
}
if (names.size() > 1) {
throw new IllegalStateException("More than one configuration mananger was found in kernel");
}
ObjectName configurationManagerName = (ObjectName) names.iterator().next();
return (EditableConfigurationManager) kernel.getProxyManager().createProxy(configurationManagerName, EditableConfigurationManager.class);
}
public static void releaseConfigurationManager(Kernel kernel, ConfigurationManager configurationManager) {
kernel.getProxyManager().destroyProxy(configurationManager);
}
}