/*
* Copyright to the original author or authors.
*
* 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.rioproject.cybernode.service;
import net.jini.admin.Administrable;
import net.jini.admin.JoinAdmin;
import org.rioproject.servicebean.ServiceBeanContext;
import org.rioproject.servicebean.ServiceElementChangeListener;
import org.rioproject.impl.servicebean.ServiceBeanSLAManager;
import org.rioproject.impl.servicebean.ServiceElementUtil;
import org.rioproject.log.LoggerConfig;
import org.rioproject.opstring.ServiceElement;
import org.rioproject.sla.ServiceLevelAgreements;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.rmi.RemoteException;
/**
* Listen for ServiceElement changes
*
* @author Dennis Reedy
*/
public class ServiceElementChangeManager implements ServiceElementChangeListener {
private final ServiceBeanContext context;
/* Manage declared SLAs */
private final ServiceBeanSLAManager serviceBeanSLAManager;
private final Object serviceProxy;
private static final Logger logger = LoggerFactory.getLogger(ServiceElementChangeManager.class.getName());
public ServiceElementChangeManager(ServiceBeanContext context,
ServiceBeanSLAManager serviceBeanSLAManager,
Object serviceProxy) {
this.context = context;
this.serviceBeanSLAManager = serviceBeanSLAManager;
this.serviceProxy = serviceProxy;
}
/* (non-Javadoc)
* @see org.rioproject.core.servicebean.ServiceElementChangeListener#changed
*/
public void changed(ServiceElement preElem, ServiceElement postElem) {
if (logger.isTraceEnabled())
logger.debug("[%s] ServiceElementChangeManager notified", context.getServiceElement().getName());
/* ------------------------------------------*
* SLA Update Processing
* ------------------------------------------*/
/* Get the new SLAs */
ServiceLevelAgreements slas = postElem.getServiceLevelAgreements();
/* Modify service SLAs */
serviceBeanSLAManager.updateSLAs(slas.getServiceSLAs());
/* --- End SLA Update Processing ---*/
/* --- Update Logging --- */
if (ServiceElementUtil.hasDifferentLoggerConfig(preElem, postElem)) {
LoggerConfig[] newLoggerConfigs = postElem.getServiceBeanConfig().getLoggerConfigs();
LoggerConfig[] currentLoggerConfigs = preElem.getServiceBeanConfig().getLoggerConfigs();
for (LoggerConfig newLoggerConfig : newLoggerConfigs) {
if (LoggerConfig.isNewLogger(newLoggerConfig, currentLoggerConfigs)) {
newLoggerConfig.getLogger();
} else if (LoggerConfig.levelChanged(newLoggerConfig, currentLoggerConfigs)) {
java.util.logging.Logger.getLogger(newLoggerConfig.getLoggerName()).setLevel(newLoggerConfig.getLoggerLevel());
}
}
}
/* --- End Update Logging --- */
/* --- Update Discovery --- */
/* If the groups or LookupLocators have changed, update the
* attributes using JoinAdmin capabilities */
boolean hasDifferentGroups = ServiceElementUtil.hasDifferentGroups(preElem, postElem);
boolean hasDifferentLocators = ServiceElementUtil.hasDifferentLocators(preElem, postElem);
if (hasDifferentGroups || hasDifferentLocators) {
logger.trace("[{}] Discovery has changed", context.getServiceElement().getName());
if (serviceProxy instanceof Administrable) {
try {
Administrable admin = (Administrable) serviceProxy;
Object adminObject;
adminObject = admin.getAdmin();
if (adminObject instanceof JoinAdmin) {
JoinAdmin joinAdmin = (JoinAdmin) adminObject;
/* Update groups if they have changed */
if (hasDifferentGroups) {
joinAdmin.setLookupGroups(postElem.getServiceBeanConfig().getGroups());
}
/* Update locators if they have changed */
if (hasDifferentLocators)
joinAdmin.setLookupLocators(postElem.getServiceBeanConfig().getLocators());
} else {
logger.debug("No JoinAdmin capabilities for {}", context.getServiceElement().getName());
}
} catch (RemoteException e) {
logger.error("Modifying Discovery attributes", e);
}
} else {
logger.debug("No Administrable capabilities for {}", serviceProxy.getClass().getName());
}
/* --- End Update Discovery --- */
}
}
}