VMware VCLOUD SDK FOR JAVA 1.0 - DEVELOPER S GUIDE Manuale Utente Scaricare il pdf (Pagina 46)

Hybrid Cloud Application Architecture

Deployment Guide 44

// hit list contains all the nodes that can be disabled from the LTM pool and

shutdown.

readyToScaleIn = TRUE

}

} else {

// This node is active again with connections

// do not consider for removal so remove from the trigger list.

nodeTriggers.remove(nodeIp);

}

return ReadyToSCaleIn;

Retrieving pool member connection counts

1. Get all the pool members in the “petshop_http” pool in the Public

Cloud LTM.

2. Get statistics for every pool member using Poll Member Stub:

for(all the pool members) {

for (all the stat entries for the given pmember) {

// Now look fo only the server side open conection statistic entry

if(Statistic Type ==

CommonStatisticType.STATISTIC_SERVER_SIDE_CURRENT_CONNECTIONS) {

numberOfConnectios = stat Entry.value();

// Connetion Map stores the node and number od connections using the Node IP

as the key.

connectionMap.add(Node IP Address, No of connections);

}

return the connectionMap

scaleOutAction() function for increasing resources in the Public

Cloud

This action initializes the procedure for adding vApp resources to the

application running in the public cloud. The cloud application performance

metric is read in from the orchestration configuration and the process waits

to deploy resources until the readyToScaleOut() function returns a TRUE.

1. Read configuration parameters and threshold values. These include:

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VMware VCLOUD SDK FOR JAVA 1.0 - DEVELOPER S GUIDE Manuale Utente Pagina 46