org.jclouds.rackspace.cloudloadbalancers.predicates

Class LoadBalancerPredicates

java.lang.Object

org.jclouds.rackspace.cloudloadbalancers.predicates.LoadBalancerPredicates

public class LoadBalancerPredicates
extends Object

Tests to see if loadBalancer has reached status. This class is most useful when paired with a RetryablePredicate as in the code below. This class can be used to block execution until the LoadBalancer status has reached a desired state. This is useful when your LoadBalancer needs to be 100% ready before you can continue with execution.

 LoadBalancer loadBalancer = loadBalancerApi.create(loadBalancerRequest);
 
 RetryablePredicate<String> awaitAvailable = new RetryablePredicate<String>(
    LoadBalancerPredicates.available(loadBalancerApi), 600, 10, 10, TimeUnit.SECONDS);
 
 if (!awaitAvailable.apply(loadBalancer)) {
    throw new TimeoutException("Timeout on loadBalancer: " + loadBalancer); 
 }    
 
 

You can also use the static convenience methods as so.

 LoadBalancer loadBalancer = loadBalancerApi.create(loadBalancerRequest);
 
 if (!LoadBalancerPredicates.awaitAvailable(loadBalancerApi).apply(loadBalancer)) {
    throw new TimeoutException("Timeout on loadBalancer: " + loadBalancer);     
 }
 
 

Author:

Everett Toews

Constructor Summary

Constructors

Constructor and Description
LoadBalancerPredicates()

Method Summary

Methods

Modifier and Type	Method and Description
static RetryablePredicate<LoadBalancer>	awaitAvailable(LoadBalancerApi loadBalancerApi) Wait until a LoadBalancer is Available.
static RetryablePredicate<LoadBalancer>	awaitDeleted(LoadBalancerApi loadBalancerApi) Wait until a LoadBalancer no longer exists.
static RetryablePredicate<LoadBalancer>	awaitStatus(LoadBalancerApi loadBalancerApi, LoadBalancer.Status status, long maxWaitInSec, long periodInSec)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

LoadBalancerPredicates

public LoadBalancerPredicates()

Method Detail

awaitAvailable

public static RetryablePredicate<LoadBalancer> awaitAvailable(LoadBalancerApi loadBalancerApi)

Wait until a LoadBalancer is Available.

Parameters:

loadBalancerApi - The LoadBalancerApi in the zone where your LoadBalancer resides.

Returns:

RetryablePredicate That will check the status every 3 seconds for a maxiumum of 5 minutes.

awaitDeleted

public static RetryablePredicate<LoadBalancer> awaitDeleted(LoadBalancerApi loadBalancerApi)

Wait until a LoadBalancer no longer exists.

Parameters:

loadBalancerApi - The LoadBalancerApi in the zone where your LoadBalancer resides.

Returns:

RetryablePredicate That will check the whether the LoadBalancer exists every 3 seconds for a maxiumum of 5 minutes.

awaitStatus

public static RetryablePredicate<LoadBalancer> awaitStatus(LoadBalancerApi loadBalancerApi,
                                           LoadBalancer.Status status,
                                           long maxWaitInSec,
                                           long periodInSec)