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/*
* $Id: ConfigMBean.java,v 1.4 2007/05/05 05:24:08 tcfujii Exp $
*/
package com.sun.enterprise.admin.mbeans;
import java.lang.IllegalArgumentException;
//JMX imports
import javax.management.AttributeList;
import javax.management.Attribute;
import javax.management.MBeanException;
import javax.management.ReflectionException;
import javax.management.AttributeNotFoundException;
import com.sun.enterprise.admin.meta.MBeanRegistryFactory;
//event handling
import com.sun.enterprise.admin.event.EventContext;
import com.sun.enterprise.admin.event.DynamicReconfigEvent;
//config imports
import com.sun.enterprise.admin.config.BaseConfigMBean;
import com.sun.enterprise.config.serverbeans.ServerTags;
import com.sun.enterprise.admin.AdminContext;
// Logging
import java.util.logging.Level;
import com.sun.enterprise.admin.servermgmt.pe.PEInstancesManager;
import com.sun.enterprise.admin.servermgmt.RepositoryConfig;
import com.sun.enterprise.admin.servermgmt.RuntimeStatus;
import com.sun.enterprise.admin.servermgmt.InstanceException;
import com.sun.enterprise.util.SystemPropertyConstants;
import com.sun.enterprise.util.i18n.StringManager;
public class ConfigMBean extends BaseConfigMBean
{
/****************************************************************************************************************
* Hook for standard setAttributes() to detect change for
* dynamic-reconfiguration-enabled attribute Sets the values of several MBean's attributes.
* @param attrList A list of attributes: The identification of the attributes to be set and the values they are to be set to.
* @return The list of attributes that were set, with their new values.
*/
public AttributeList setAttributes(AttributeList list) {
boolean bEnabled = false;
int reconfigIdx = -1;
if(list!=null)
for(int i=0; i<list.size(); i++)
{
Attribute attr = (Attribute)list.get(i);
if(ServerTags.DYNAMIC_RECONFIGURATION_ENABLED.equals(attr.getName()))
{
try {
bEnabled = validateDynamicReconfigEvent(attr.getValue());
} catch(Exception e) {
reconfigIdx = i;
}
}
}
if (reconfigIdx != -1) {
list.remove(reconfigIdx);
}
//then, call super to perform operation
list = super.setAttributes(list);
if (reconfigIdx != -1) {
return list;
}
//now analyse if dynamic-reconfiguration-enabled attribute changed
if(list!=null)
for(int i=0; i<list.size(); i++)
{
Attribute attr = (Attribute)list.get(i);
if(ServerTags.DYNAMIC_RECONFIGURATION_ENABLED.equals(attr.getName()))
{
emitDynamicReconfigEvent(bEnabled);
}
}
return list;
}
/**
* Set the value of a specific attribute of this MBean.
*
* @param attr The identification of the attribute to be set
* and the new value
*
* @exception AttributeNotFoundException if this attribute is not
* supported by this MBean
* @exception MBeanException if the initializer of an object
* throws an exception
* @exception ReflectionException if a Java reflection exception
* occurs when invoking the getter
*/
public void setAttribute(Attribute attr)
throws AttributeNotFoundException, MBeanException, ReflectionException
{
boolean bEnabled = false;
//first analyse if dynamic-reconfiguration-enabled attribute changed
if(ServerTags.DYNAMIC_RECONFIGURATION_ENABLED.equals(attr.getName()))
{
bEnabled = validateDynamicReconfigEvent(attr.getValue());
}
//next, call super to perform operation
super.setAttribute(attr);
if(ServerTags.DYNAMIC_RECONFIGURATION_ENABLED.equals(attr.getName()))
{
emitDynamicReconfigEvent(bEnabled);
}
}
private boolean validateDynamicReconfigEvent(Object value) throws IllegalArgumentException, MBeanException
{
boolean bEnabled = false;
if(value instanceof Boolean)
bEnabled = ((Boolean)value).booleanValue();
else
if("true".equalsIgnoreCase(value.toString()) ||
"yes".equalsIgnoreCase(value.toString()) )
bEnabled = true;
boolean restartRequired = false;
try {
restartRequired = getRuntimeStatus().isRestartNeeded();
} catch(InstanceException ie) {
throw new MBeanException(ie);
}
if((bEnabled == true) && ( restartRequired == true)) {
String msg = _strMgr.getString(
"admin.mbeans.configMBean.serverRequiresRestart");
Exception e = new Exception(msg);
throw new MBeanException(e,msg);
}
return bEnabled;
}
private void emitDynamicReconfigEvent(boolean bEnabled)
{
try
{
AdminContext adminContext = MBeanRegistryFactory.getAdminContext();
String instanceName = adminContext.getServerName();
int action = bEnabled?DynamicReconfigEvent.ACTION_ENABLED:DynamicReconfigEvent.ACTION_DISABLED;
DynamicReconfigEvent event = new DynamicReconfigEvent(instanceName, action);
String configName = (String)getAttribute(ServerTags.NAME);
event.setTargetDestination(configName);
EventContext.addEvent(event);
}
catch (Exception e)
{
e.printStackTrace();
//throw new MBeanException(e.getMessage(), e);
}
}
private RuntimeStatus getRuntimeStatus() throws InstanceException
{
String serverName =
System.getProperty(SystemPropertyConstants.SERVER_NAME);
PEInstancesManager manager = new PEInstancesManager(new RepositoryConfig());
return RuntimeStatus.getRuntimeStatus(serverName, manager);
}
///////////////////////////////////////////////////////////////////////////
private static final StringManager _strMgr =
StringManager.getManager(ConfigMBean.class);
///////////////////////////////////////////////////////////////////////////
}
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