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/*
* JxtaStarter.java
*
* Created on February 8, 2006, 2:06 PM
*
*/
package com.sun.enterprise.ee.web.sessmgmt;
import java.io.IOException;
import java.util.HashMap;
import net.jxta.exception.PeerGroupException;
import net.jxta.peergroup.PeerGroup;
import net.jxta.rendezvous.RendezVousService;
import net.jxta.peer.PeerID;
import net.jxta.pipe.PipeID;
import com.sun.enterprise.jxtamgmt.NetworkManager;
import com.sun.enterprise.jxtamgmt.NetworkManagerProxy;
import com.sun.enterprise.jxtamgmt.JxtaUtil;
import com.sun.enterprise.ee.cms.core.*;
import com.sun.enterprise.web.ServerConfigLookup;
import com.sun.logging.LogDomains;
import java.util.logging.Logger;
import java.util.logging.Level;
/**
*
* @author Larry White
*/
public class JxtaStarter {
private static final Logger _logger = LogDomains.getLogger(LogDomains.WEB_LOGGER);
private PeerGroup netPeerGroup = null;
private RendezVousService rendezvous;
private boolean starting = false;
private boolean started = false;
private static final String TIE_BREAK_STRING = "::123";
/**
* a monitor obj for synchronization
*/
private static Object _monitor = new Object();
/** Creates a new instance of JxtaStarter */
public JxtaStarter() {
}
public JxtaStarter(String instanceName, String certpass) {
//String clusterName = this.getClusterName();
this.instanceName = instanceName;
//this.networkManager = new NetworkManager("cluster1", instanceName, certpass, new HashMap());
//this.networkManager = new NetworkManager("cluster1", instanceName, new HashMap());
//this.networkManager = new NetworkManager(clusterName, instanceName, new HashMap());
// try {
// networkManager.start();
// } catch (PeerGroupException pge) {
// // FIXME evaluate log level
// if (_logger.isLoggable(Level.FINE)) {
// _logger.log(Level.FINE, "exception occurred starting JXTA", pge);
// }
// } catch (IOException ioe) {
// // FIXME evaluate log level
// if (_logger.isLoggable(Level.FINE)) {
// _logger.log(Level.FINE, "exception occured starting JXTA", ioe);
// }
// }
}
/**
* The singleton instance of JxtaStarter
*/
private static JxtaStarter _soleInstance = null;
private static String getInstanceName() {
return ReplicationUtil.getInstanceName();
}
/** Return the singleton instance
* lazily creates a new instance of JxtaStarter if not created yet
*/
public static JxtaStarter createInstance() {
synchronized(_monitor) {
String instanceName = getInstanceName();
if (_soleInstance == null) {
_soleInstance = new JxtaStarter(instanceName, "password");
//not here for now
//_soleInstance.startJxta();
}
return _soleInstance;
}
}
private String getClusterName() {
if(clusterName == null) {
ServerConfigLookup lookup = new ServerConfigLookup();
clusterName = lookup.getClusterName();
//clusterName = (lookup.getClusterName() + TIE_BREAK_STRING);
}
return clusterName;
}
//check if GMS is started and has started Jxta
boolean checkGMS() {
boolean result = false;
if (GMSFactory.isGMSEnabled(getClusterName())) {
NetworkManagerProxy nmp = getJxtaFacade(getClusterName());
if(nmp.isStarted()) {
networkManagerProxy = nmp;
result = true;
} else if (_logger.isLoggable(Level.FINE)) {
_logger.log(Level.FINE, "GMS has not started Jxta");
}
} else if (_logger.isLoggable(Level.FINE)) {
_logger.fine("GMS NOT enabled for the cluster:" + getClusterName());
}
return result;
}
private NetworkManagerProxy getJxtaFacade(String groupName) {
return com.sun.enterprise.jxtamgmt.JxtaUtil.getNetworkManagerProxy(groupName);
}
/**
* Starts jxta
*/
void startJxta() {
if(started) {
return;
}
if(starting) {
return;
}
starting = true;
synchronized(this) {
gmsStartedJxta = checkGMS();
//if GMS has started Jxta we don't need to
//and we register for GMS events
if(gmsStartedJxta) {
//if(checkGMS()) {
starting = false;
return;
}
}
try {
networkManager = getNetworkManager();
networkManager.start();
} catch (PeerGroupException pge) {
// FIXME evaluate log level
if (_logger.isLoggable(Level.FINE)) {
_logger.log(Level.FINE, "exception occurred starting JXTA", pge);
}
} catch (IOException ioe) {
// FIXME evaluate log level
if (_logger.isLoggable(Level.FINE)) {
_logger.log(Level.FINE, "exception occured starting JXTA", ioe);
}
} finally {
starting = false;
}
}
/**
* Starts jxta
*/
void startJxta(boolean isServer) {
startJxta();
}
/**
* Gets the netPeerGroup object from the network manager
*
* @return The netPeerGroup value
*/
public PeerGroup getNetPeerGroupLastGood() {
//return netPeerGroup;
if (networkManager != null) {
return networkManager.getNetPeerGroup();
} else {
return null;
}
}
/**
* Gets the netPeerGroup object from the network manager
*
* @return The netPeerGroup value
*/
public PeerGroup getNetPeerGroup() {
//return netPeerGroup;
if(gmsStartedJxta) {
//delegate to NetworkManagerProxy
return createInstance().getNetworkManagerProxy().getNetPeerGroup();
} else {
//delegate to NetworkManager
return createInstance().getNetworkManager().getNetPeerGroup();
}
}
/**
* Gets the RendezVousService from the netPeerGroup
*
* @param instanceName instance name value
* @return The peerID value
*/
public synchronized RendezVousService getRendezvous() {
if(rendezvous == null) {
if(getNetPeerGroup() != null) {
rendezvous = getNetPeerGroup().getRendezVousService();
}
}
return rendezvous;
}
/**
* Gets the peerID attribute of the NetworkManager class
*
* @param instanceName instance name value
* @return The peerID value
*/
public static PeerID getPeerIDLastGood(String instanceName) {
//delegate to NetworkManager
NetworkManager mgr = createInstance().getNetworkManager();
return mgr.getPeerID(instanceName);
}
/**
* Gets the peerID attribute of the NetworkManager class
*
* @param instanceName instance name value
* @return The peerID value
*/
public static PeerID getPeerID(String instanceName) {
if(gmsStartedJxta) {
//delegate to NetworkManagerProxy
return createInstance().getNetworkManagerProxy().getPeerID(instanceName);
} else {
//delegate to NetworkManager
return createInstance().getNetworkManager().getPeerID(instanceName);
}
}
/**
* Gets the pipeID attribute of the NetworkManager class
*
* @param instanceName instance name
* @return The pipeID value
*/
public static PipeID getPipeIDLastGood(String instanceName) {
//delegate to NetworkManager
NetworkManager mgr = createInstance().getNetworkManager();
return mgr.getPipeID(instanceName);
}
/**
* Gets the pipeID attribute of the NetworkManager class
*
* @param instanceName instance name
* @return The pipeID value
*/
public static PipeID getPipeID(String instanceName) {
if(gmsStartedJxta) {
//delegate to NetworkManagerProxy
return createInstance().getNetworkManagerProxy().getPipeID(instanceName);
} else {
//delegate to NetworkManager
return createInstance().getNetworkManager().getPipeID(instanceName);
}
}
public static PipeID getSocketID(String instanceName) {
if (gmsStartedJxta) {
//delegate to NetworkManagerProxy
return createInstance().getNetworkManagerProxy().getSocketID(instanceName);
} else {
//delegate to NetworkManager
return createInstance().getNetworkManager().getSocketID(instanceName);
}
}
/**
* Returns the getSessionQueryPipeID ID
*
* @return The HealthPipe Pipe ID
*/
public static PipeID getSessionQueryPipeIDLastGood() {
//delegate to NetworkManager
NetworkManager mgr = createInstance().getNetworkManager();
return mgr.getSessionQueryPipeID();
}
/**
* Returns the getSessionQueryPipeID ID
*
* @return The HealthPipe Pipe ID
*/
public static PipeID getSessionQueryPipeID() {
if(gmsStartedJxta) {
//delegate to NetworkManagerProxy
return createInstance().getNetworkManagerProxy().getSessionQueryPipeID();
} else {
//delegate to NetworkManager
return createInstance().getNetworkManager().getSessionQueryPipeID();
}
}
public NetworkManager getNetworkManagerPrevious() {
return networkManager;
}
public synchronized NetworkManager getNetworkManager() {
if(networkManager == null) {
this.networkManager = new NetworkManager(getClusterName(), instanceName, new HashMap());
}
return networkManager;
}
public NetworkManagerProxy getNetworkManagerProxy() {
return networkManagerProxy;
}
NetworkManager networkManager = null;
NetworkManagerProxy networkManagerProxy = null;
String instanceName = null;
String clusterName = null;
static boolean gmsStartedJxta = false;
}