/**
* syncProbe() Called during incremental discovery Rediscover and parse the load balancing virtual
* server object that is represented by the given VirtualApplication object
*
* @param objects List of existing VirtualApplication objects to be rediscovered
*/
private void syncProbe(EList<Object> objects) {
if (!FeaturesManager.vmtMANAGER.isLoadBalancerEnabled()) {
logger.error("Operations Manager is not licensed for Load Balancer targets");
return;
}
if (!objects.isEmpty() && initProbe() != null) {
if (logPrefix == "") logPrefix = target.getNameOrAddress() + " : ";
for (Object object : objects) {
if (!(object instanceof VirtualApplication)) continue;
// Get all the lbv servers from NetScaler appliance
VirtualApplication vApp = (VirtualApplication) object;
DiscoveryExtension discExt = vApp.getDiscoveryExtension();
if (logger.isDebugEnabled())
logger.debug(logPrefix + " rediscovering virtual application " + vApp.toVMTString());
if (discExt instanceof NetScalerVirtualAppDiscExt) { // lbvserver
lbvserver server = NetScalerUtil.getLbvServer(session, vApp.getName(), target, logPrefix);
if (server != null) parseServer(server);
else exceptions = true;
} else if (discExt instanceof NetScalerGslbVirtualAppDiscExt) { // gslb vserver
gslbvserver gslb =
NetScalerUtil.getGslbvServer(session, vApp.getName(), target, logPrefix);
if (gslb != null) parseGslbServer(gslb);
else exceptions = true;
}
}
// If no exceptions clear previous occurrences of DISCOVERY notifications
if (!exceptions) target.clearNotifications(NotificationCategory.DISCOVERY);
}
}
/**
* Set up properties for the given virtual application object representing a NetScaler loading
* balance. and its discovery extension. Create the GslbServiceAgent to capture the lbvserver and
* app services that are configured on this target and are bound to the specified GSLB. Also
* create the transaction commodity sold by the vApp.
*
* @param gslb VirtualApplication for the load balancing server
* @param specificTarget NetScaler appliance target
* @param vServerExt NetScalerGslbVirtualAppDiscExt Discovery extension for the virtual
* application
* @param localName gslb server name to be set as local name in the discovery extension
* @param vAppUuid UUID created for the virtual application
* @param vAppType load balancing service protocol
* @param classname static string "gslbvserver" to set as class name in the discovery extension
* @param lbvServers list of lbvservers configured on the gslb on this target
* @return modified vApp object
*/
private VirtualApplication createGslbVirtualApplication(
VirtualApplication gslb,
VMTTarget specificTarget,
NetScalerGslbVirtualAppDiscExt vServerExt,
String localName,
String vAppUuid,
String vAppType,
String classname,
List<String> lbvServers) {
// set properties in the virtual app and the discovery extension
// and create the transaction commodity sold
gslb =
createVirtualApplication(
gslb,
specificTarget,
vServerExt,
localName, // service name as the local name
"", // there is no IP and port associated with the GSLB
0, // there is no port for the GSLB service
vAppUuid, // uuid for the gslb vapp containing its service name only
vAppType, // service type
NetScalerUtil.GSLB_VSERVER // class name for the poller
);
// agent to represent this service on this target
String agentName =
NetScalerUtil.GSLB_AGENT_PREFIX + gslb.getName() + "-" + target.getNameOrAddress();
GslbServiceAgent lbAgent =
(GslbServiceAgent)
createObject(MediationPackage.eINSTANCE.getGslbServiceAgent(), agentName);
lbAgent.setDisplayName(gslb.getName() + "-" + target.getNameOrAddress());
// discovery extension for the agent
NetScalerGslbServiceAgentDiscExt agentDiscExt =
(NetScalerGslbServiceAgentDiscExt)
lbAgent.createExtension(
DiscoveryExtensionsPackage.eINSTANCE.getNetScalerGslbServiceAgentDiscExt());
// we set the GSLB server name as the local name
setExtProps(
agentDiscExt,
specificTarget,
NetScalerUtil.LB_VSERVER, // class name attribute in the extension used during polling
agentName, // display name attribute in the extension
localName, // local name attribute
localName, // id attribute
logPrefix);
// attach to the vApp
gslb.getAgents().add(lbAgent);
agentDiscExt.getLbvServers().addAll(lbvServers);
if (logger.isDebugEnabled())
logger.debug(
logPrefix
+ gslb.toVMTString()
+ " : create glsb agent on target "
+ target.getNameOrAddress());
return gslb;
}