Get the reservation policy IDs of all the reservations of a compute resource in a vRA IaaS instance

getReservationPolicyIdsOfComputeResource.js

// VMware vRealize Orchestrator action sample
//
// Get the reservation policy IDs of all the reservations of a compute resource in a vRA IaaS instance
// 
// For vRO/VRA 7.0+
//
// Action Inputs:
// host - vCAC:VCACHost - vRA IaaS Host
// computeResourceName - string - Compute resource name
// onlyEnabledReservations - boolean - Set to true to only return the reservation policies of enabled reservations
//
// Return type: Array/strings - reservation policy IDs

if (vcacHost == null) return null;

var reservationPolicyIds = [];
var computeResourceEntity =  getComputeResourceEntity(vcacHost, computeResourceName);
var reservationEntities  = computeResourceEntity.getLink(vcacHost, "HostReservations");
var resPolicy;

if (reservationEntities.length !== 0) {
	for each (var r in reservationEntities) {	
		if (onlyEnabledReservations) {
			if (r.getProperty("Enabled") == true) {
				resPolicy = getReservationPolicy(vcacHost, r);
			}
		} else {
			resPolicy = getReservationPolicy(vcacHost, r);
		}
		
		if (resPolicy) {
			// Note: Can alternatively return resPolicy.name to get names rather than IDs
			reservationPolicyIds.push(resPolicy.id);
		}
	}
}

return reservationPolicyIds;


function getComputeResourceEntity(host, name) {
	var model = "ManagementModelEntities.svc";
	var entitySetName = "Hosts";
	var filter = "MachineType eq 0 and IsVRMManaged eq true and HostName eq '" + name + "'";
	var entities = vCACEntityManager.readModelEntitiesBySystemQuery(host.id, model, entitySetName, filter);
	
	if (entities.length === 0) {
		throw "No compute resource entity found with name '" + name + "'";
	}
	
	if (entities.length > 1) {
		throw "Too many compute resource entities found with name '" + name + "'";
	}
	
	return entities[0];
}

function getReservationPolicy(host, reservationEntity) {
	var policies = reservationEntity.getLink(host, "HostReservationPolicy");
	 
	if (policies.length == 0) {
		System.warn("No Reservation Policy found for the Reservation");
		return null;
	}
	 
	var policyEntity = policies[0];
	var policyName = policyEntity.getProperty("name");
	var policyId = policyEntity.getProperty("id");
	 
	//System.log("Found Reservation Policy '" + policyName + "' with ID '" + policyId + "'");
	return { "name" : policyName, "id" : policyId };
}