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package com.sun.enterprise.connectors.jms.system;
import java.util.*;
import java.util.logging.*;
import java.beans.PropertyChangeEvent;
import javax.inject.Inject;
import javax.inject.Named;
import com.sun.enterprise.connectors.jms.config.JmsHost;
import com.sun.enterprise.connectors.jms.config.JmsService;
import com.sun.logging.LogDomains;
import com.sun.enterprise.util.i18n.StringManager;
import org.jvnet.hk2.annotations.Service;
import org.jvnet.hk2.config.ConfigListener;
import org.jvnet.hk2.config.UnprocessedChangeEvent;
import org.jvnet.hk2.config.UnprocessedChangeEvents;
import org.glassfish.internal.api.Globals;
import org.glassfish.internal.api.ServerContext;
import com.sun.enterprise.config.serverbeans.*;
import com.sun.enterprise.connectors.jms.util.JmsRaUtil;
import org.glassfish.api.admin.ServerEnvironment;
@Service
public class JMSConfigListener implements ConfigListener{
// Injecting @Configured type triggers the corresponding change
// events to be sent to this instance
private JmsService jmsService;
@Inject @Named(ServerEnvironment.DEFAULT_INSTANCE_NAME)
private Config serverConfig;
@Inject
private Servers servers;
//private Cluster cluster;
private ActiveJmsResourceAdapter aresourceAdapter;
private static final Logger _logger = LogDomains.getLogger(
JMSConfigListener.class, LogDomains.JMS_LOGGER);
// String Manager for Localization
private static StringManager sm
= StringManager.getManager(JMSConfigListener.class);
public void setActiveResourceAdapter(ActiveJmsResourceAdapter aresourceAdapter) {
this.aresourceAdapter = aresourceAdapter;
}
/** Implementation of org.jvnet.hk2.config.ConfigListener */
public UnprocessedChangeEvents changed(PropertyChangeEvent[] events) {
//Events that we can't process now because they require server restart.
jmsService = serverConfig.getExtensionByType(JmsService.class);
List<UnprocessedChangeEvent> unprocessedEvents = new ArrayList<UnprocessedChangeEvent>();
_logger.log(Level.FINE, "In JMSConfigListener - received config event");
Domain domain = Globals.get(Domain.class);
String jmsProviderPort = null;
ServerContext serverContext = Globals.get(ServerContext.class);
Server thisServer = domain.getServerNamed(serverContext.getInstanceName());
//if(thisServer.isDas() || thisServer.getCluster() == null)
{
// _logger.log(Level.FINE,"JMSConfigListerner server is either das or a stand-alone instance - hence ignoring");
//return null;
}
for (int i=0; i< events.length; i++) {
//for (PropertyChangeEvent event : events) {
PropertyChangeEvent event = events[i];
String eventName = event.getPropertyName();
Object oldValue = event.getOldValue();
Object newValue = event.getNewValue();
if(event.getSource().toString().indexOf("config.serverbeans.JmsService") != -1) {
UnprocessedChangeEvent uchangeEvent = new UnprocessedChangeEvent(event, "restart required");
unprocessedEvents.add(uchangeEvent);
}
else if(event.getSource().toString().indexOf("config.serverbeans.JmsHost") != -1) {
UnprocessedChangeEvent uchangeEvent = new UnprocessedChangeEvent(event, "restart required");
unprocessedEvents.add(uchangeEvent);
}
_logger.log(Level.FINE, "In JMSConfigListener " + eventName + oldValue + newValue);
if (oldValue != null && oldValue.equals(newValue)) {
_logger.log(Level.FINE, "Event " + eventName
+ " did not change existing value of " + oldValue);
continue;
}
if ("JMS_PROVIDER_PORT".equals(newValue)){
//The value is in the next event
PropertyChangeEvent nextevent = events[i+1] ;
jmsProviderPort = (String) nextevent.getNewValue();
}
if(event.getSource() instanceof JmsService ) {
if (eventName.equals(ServerTags.MASTER_BROKER)) {
String oldMB = oldValue != null ? oldValue.toString() : null;
String newMB = newValue != null ? newValue.toString(): null;
_logger.log(Level.FINE, "Got JmsService Master Broker change event "
+ event.getSource() + " "
+ eventName + " " + oldMB + " " + newMB);
if (newMB != null) {
Server newMBServer = domain.getServerNamed(newMB);
if(newMBServer != null)
{
Node node = domain.getNodeNamed(newMBServer.getNodeRef());
String newMasterBrokerPort = JmsRaUtil.getJMSPropertyValue(newMBServer);
if(newMasterBrokerPort == null) newMasterBrokerPort = getDefaultJmsHost(jmsService).getPort();
String newMasterBrokerHost = node.getNodeHost();
aresourceAdapter.setMasterBroker(newMasterBrokerHost + ":" + newMasterBrokerPort);
}
}
}
} if (eventName.equals(ServerTags.SERVER_REF)){
//if(event instanceof ServerRef){
String oldServerRef = oldValue != null ? oldValue.toString() : null;
String newServerRef = newValue != null ? newValue.toString(): null;
if(oldServerRef != null && newServerRef == null && !thisServer.isDas()) {//instance has been deleted
_logger.log(Level.FINE, "Got Cluster change event for server_ref"
+ event.getSource() + " "
+ eventName + " " + oldServerRef + " " + newServerRef);
String url = getBrokerList();
aresourceAdapter.setClusterBrokerList(url);
break;
}//
} // else skip
if (event.getSource() instanceof Server) {
_logger.log(Level.FINE, "In JMSConfigListener - recieved cluster event " + event.getSource());
Server changedServer = (Server) event.getSource();
if (thisServer.isDas())return null;
if(jmsProviderPort != null){
String nodeName = changedServer.getNodeRef();
String nodeHost = null;
if(nodeName != null)
nodeHost = domain.getNodeNamed(nodeName).getNodeHost();
String url = getBrokerList();
url = url + ",mq://" + nodeHost + ":" + jmsProviderPort;
aresourceAdapter.setClusterBrokerList(url);
break;
}
}
}
return unprocessedEvents.size() > 0 ? new UnprocessedChangeEvents(unprocessedEvents) : null;
}
private String getBrokerList(){
MQAddressList addressList = new MQAddressList();
try{
addressList.setup(true);
}catch(Exception ex){
_logger.log(Level.WARNING, "failed to create addresslist " + ex.getLocalizedMessage());
ex.printStackTrace();
}
return addressList.toString();
}
private JmsHost getDefaultJmsHost(JmsService jmsService){
JmsHost jmsHost = null;
String defaultJmsHostName = jmsService.getDefaultJmsHost();
List <JmsHost> jmsHostsList = jmsService.getJmsHost();
for (int i=0; i < jmsHostsList.size(); i ++)
{
JmsHost tmpJmsHost = (JmsHost) jmsHostsList.get(i);
if (tmpJmsHost != null && tmpJmsHost.getName().equals(defaultJmsHostName))
jmsHost = tmpJmsHost;
}
if (jmsHost == null && jmsHostsList.size() >0)
jmsHost = jmsHostsList.get(0);
return jmsHost;
}
}