/**
* A list of Availability Zones.
*
* <p>At least one Availability Zone must be specified. Specified Availability Zones must be in
* the same EC2 Region as the load balancer. Traffic will be equally distributed across all zones.
*
* <p>You can later add more Availability Zones after the creation of the load balancer by calling
* <a>EnableAvailabilityZonesForLoadBalancer</a> action.
*
* <p>Returns a reference to this object so that method calls can be chained together.
*
* @param availabilityZones A list of Availability Zones.
* <p>At least one Availability Zone must be specified. Specified Availability Zones must be
* in the same EC2 Region as the load balancer. Traffic will be equally distributed across all
* zones.
* <p>You can later add more Availability Zones after the creation of the load balancer by
* calling <a>EnableAvailabilityZonesForLoadBalancer</a> action.
* @return A reference to this updated object so that method calls can be chained together.
*/
public CreateLoadBalancerRequest withAvailabilityZones(String... availabilityZones) {
if (getAvailabilityZones() == null)
setAvailabilityZones(new java.util.ArrayList<String>(availabilityZones.length));
for (String value : availabilityZones) {
getAvailabilityZones().add(value);
}
return this;
}
/**
* Constructs a new CreateLoadBalancerRequest object. Callers should use the setter or fluent
* setter (with...) methods to initialize any additional object members.
*
* @param loadBalancerName The name associated with the load balancer. The name must be unique
* within your set of load balancers.
* @param listeners A list of the following tuples: LoadBalancerPort, InstancePort, and Protocol.
* @param availabilityZones A list of Availability Zones.
* <p>At least one Availability Zone must be specified. Specified Availability Zones must be
* in the same EC2 Region as the load balancer. Traffic will be equally distributed across all
* zones.
* <p>You can later add more Availability Zones after the creation of the load balancer by
* calling <a>EnableAvailabilityZonesForLoadBalancer</a> action.
*/
public CreateLoadBalancerRequest(
String loadBalancerName,
java.util.List<Listener> listeners,
java.util.List<String> availabilityZones) {
setLoadBalancerName(loadBalancerName);
setListeners(listeners);
setAvailabilityZones(availabilityZones);
}
public static String setUpElbWithLoadGenerator(String loadGenerator) throws Exception {
String loadBalancerName = "projecttwoelb";
// Create the ELB client.
elbClient = new AmazonElasticLoadBalancingClient(awsCredentials());
Region usEast1 = Region.getRegion(Regions.US_EAST_1);
elbClient.setRegion(usEast1);
CreateLoadBalancerRequest elbRequest = new CreateLoadBalancerRequest();
elbRequest.setLoadBalancerName(loadBalancerName);
// Security Group
DescribeSecurityGroupsRequest sgRequest = new DescribeSecurityGroupsRequest();
ArrayList<String> list = new ArrayList<String>();
list.add("SecurityGroupForELBAndAutoscale");
sgRequest.setGroupNames(list);
DescribeSecurityGroupsResult result = ec2.describeSecurityGroups(sgRequest);
List<SecurityGroup> groups = result.getSecurityGroups();
ArrayList<String> securityGroups = new ArrayList<String>();
securityGroups.add(groups.get(0).getGroupId());
elbRequest.setSecurityGroups(securityGroups);
// Adding tags
Collection<com.amazonaws.services.elasticloadbalancing.model.Tag> tags =
new ArrayList<com.amazonaws.services.elasticloadbalancing.model.Tag>();
com.amazonaws.services.elasticloadbalancing.model.Tag tag =
new com.amazonaws.services.elasticloadbalancing.model.Tag();
tag.setKey("Project");
tag.setValue("2.1");
tags.add(tag);
AddTagsRequest tagReq = new AddTagsRequest();
tagReq.withTags(tags);
elbRequest.setTags(tags);
// Specify ports
List<Listener> listener = new ArrayList<Listener>(1);
listener.add(new Listener("HTTP", 80, 80));
elbRequest.setListeners(listener);
// Speciy availability zones
List<String> zones = new ArrayList<String>(1);
zones.add("us-east-1c");
elbRequest.setAvailabilityZones(zones);
CreateLoadBalancerResult lbResult = elbClient.createLoadBalancer(elbRequest);
// Disable Cross Zone
ModifyLoadBalancerAttributesRequest attribRequest = new ModifyLoadBalancerAttributesRequest();
LoadBalancerAttributes attribs = new LoadBalancerAttributes();
CrossZoneLoadBalancing crossZone = new CrossZoneLoadBalancing();
crossZone.setEnabled(false);
attribs.setCrossZoneLoadBalancing(crossZone);
attribRequest.setLoadBalancerAttributes(attribs);
attribRequest.setLoadBalancerName(loadBalancerName);
elbClient.modifyLoadBalancerAttributes(attribRequest);
// Specify Health Check
String target = "HTTP:80/heartbeat?lg=" + URLEncoder.encode(loadGenerator, "UTF-8");
ConfigureHealthCheckRequest healthCheckRequest = new ConfigureHealthCheckRequest();
HealthCheck healthCheck = new HealthCheck(target, 5, 2, 2, 10);
healthCheckRequest.setHealthCheck(healthCheck);
healthCheckRequest.setLoadBalancerName(loadBalancerName);
elbClient.configureHealthCheck(healthCheckRequest);
System.out.println("Load balancer created with name: " + lbResult.getDNSName());
return lbResult.getDNSName();
}