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package org.jvnet.glassfish.comms.replication.sessmgmt;
import java.util.logging.Level;
import java.util.logging.Logger;
import com.ericsson.ssa.sip.SipApplicationSessionUtil;
import com.sun.enterprise.ee.web.sessmgmt.DynamicOwnershipManager;
import com.sun.enterprise.ee.web.sessmgmt.ReplicationHealthChecker;
import com.sun.enterprise.ee.web.sessmgmt.ReplicationMessageRouter;
import com.sun.enterprise.ee.web.sessmgmt.ReplicationState;
import com.sun.enterprise.ee.web.sessmgmt.ReplicationUtil;
import com.sun.logging.LogDomains;
import org.jvnet.glassfish.comms.gms.EventListener;
import com.ericsson.ssa.container.datacentric.DataCentricUtilHolder;
/**
*
* @author lwhite
*/
public class ExtendedReplicationUtil extends ReplicationUtil {
/**
* Gets the actual server instance (i.e, with respect to the actual
* cluster shape) to which the given SipApplicationSession id currently
* maps.
*
* @param sasId the SipApplicationSession id to be mapped
*
* @return the server instance to which the specified
* SipApplicationSession id currently maps
*/
@Override
public String getActualServerInstance(String sasId) {
return SipApplicationSessionUtil.getActualServerInstance(sasId);
}
/**
* Gets the actual server instance (i.e, with respect to the actual
* cluster shape) to which the given beKey currently
* maps.
*
* @param beKey the beKey to be mapped
*
* @return the server instance to which the specified
* beKey currently maps
*/
@Override
public String getActualServerInstanceForBeKey(String beKey) {
return SipApplicationSessionUtil.getActualServerInstanceForBeKey(beKey);
}
/**
* Extracts the application (hash) key portion of the given
* SipApplicationSession id and returns it.
*
* Format: see {@link #createSasId(String, String, String)}
*
* @param sasId the SipApplicationSession id
*
* @return the application (hash) key portion of the given
* SipApplicationSession id
*/
@Override
public String getSipApplicationKey(String sasId) {
return SipApplicationSessionUtil.getSipApplicationKey(sasId);
}
@Override
public boolean isInstanceLoadBalancedByCLB() {
return SipReplicationUtil.isInstanceLoadBalancedByCLB();
}
/**
* Gets the server instance that would be mapped to the specified key in case the current
* instance handling the request becomes unhealthy. So instance is selected from exsiting
* set of working instances, excluding current instance.
* @param beKey the key
* @return the fail-over server instance that is mapped to the specified key
*/
@Override
public String getFailoverServerInstanceForBeKey(String beKey) {
return SipApplicationSessionUtil.getFailoverServerInstanceForBeKey(beKey);
}
// Nodes in the CLB can be enabled/disable independently of GMS
// We listen to their events here and generate reconfiguration calls if
// warranted
public static class SipCLBListenerClass implements EventListener {
private final static Logger _logger = Logger.getLogger(ReplicationState.LOGGER_MEM_REP);
private static SipCLBListenerClass instance = new SipCLBListenerClass();
private ReplicationMessageRouter router =
ReplicationMessageRouter.createInstance();
private SipCLBListenerClass() {
}
// This is from the CLI when a node is added to the cluster.
// We'll get a GMS event when the node is started, so even if
// enabled==true here, we don't do anything.
public void onAdd(String clusterName, String instanceName,
boolean enabled) {
if (logger.isLoggable(Level.FINE)) {
logger.fine("Handled DCU reconfigure add event for " + instanceName + ", enabled=" + enabled);
}
}
// A node can't be deleted if it is alive, so we don't need anything here
public void onDelete(String clusterName, String instanceName) {
if (logger.isLoggable(Level.FINE)) {
logger.fine("Handled DCU reconfigure delete event for " + instanceName);
}
}
// This comes from the CLI disable-converged-lb-server. Note that
// if the instance is down, we don't get this event. Hence, the
// lbStateChange is always true: we are always changing from "up"
// (we're alive and getting CLB requests) to "down" (we're alive
// but no longer getting CLB requests.)
public void onDisable(String clusterName, String instanceName) {
if (logger.isLoggable(Level.FINE)) {
logger.fine("Handled DCU reconfigure disable event for " + instanceName);
}
router.handleDynamicOwnershipChanges(
DynamicOwnershipManager.Event.FAILURE,
instanceName, true);
}
// This comes from the GMS FAIL event
public void onFailure(String clusterName, String instanceName,
boolean isClusterShutdown) {
if (logger.isLoggable(Level.FINE)) {
logger.fine("Handled DCU reconfigure failure event for " + instanceName);
}
router.handleDynamicOwnershipChanges(
DynamicOwnershipManager.Event.FAILURE,
instanceName,
ReplicationHealthChecker.isServerLbEnabled(instanceName));
}
// This comes from the CLI enable-converged-lb-server. Note that
// we never get this event if the instance is down, so
// this is always an lb state change.
public void onEnable(String clusterName, String instanceName) {
if (logger.isLoggable(Level.FINE)) {
logger.fine("Handled DCU reconfigure enable event for " + instanceName);
}
router.handleDynamicOwnershipChanges(
DynamicOwnershipManager.Event.JOIN,
instanceName, true);
}
// This comes from GMS JOINEDANDREADY event
public void onRecovery(String clusterName, String instanceName,
boolean isClusterStartup) {
if (logger.isLoggable(Level.FINE)) {
logger.fine("Handled DCU recovery enable event for " + instanceName);
}
router.handleDynamicOwnershipChanges(
(isClusterStartup) ?
DynamicOwnershipManager.Event.CLUSTER_STARTUP :
DynamicOwnershipManager.Event.JOIN,
instanceName,
ReplicationHealthChecker.isServerLbEnabled(instanceName));
}
}
protected void doConfigureLoadBalancer() {
EventListener l = SipCLBListenerClass.instance;
DataCentricUtilHolder.addEventListener(l);
}
}