Package org.jclouds.openstack.trove.v1.predicates

Class InstancePredicates

java.lang.Object
org.jclouds.openstack.trove.v1.predicates.InstancePredicates
public class InstancePredicates extends Object
Tests to see if instance 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 Instance status has reached a desired state. This is useful when your Instance needs to be 100% ready before you can continue with execution. 
 
 Instance instance = instanceApi.create(100);

 RetryablePredicate<String> awaitAvailable = RetryablePredicate.create(
    InstancePredicates.available(instanceApi), 600, 10, 10, TimeUnit.SECONDS);

 if (!awaitAvailable.apply(instance.getId())) {
    throw new TimeoutException("Timeout on instance: " + instance);
 }
You can also use the static convenience methods as follows. 
 
 Instance instance = instanceApi.create(100);

 if (!InstancePredicates.awaitAvailable(instanceApi).apply(instance.getId())) {
    throw new TimeoutException("Timeout on instance: " + instance);
 }

  • Constructor Details

    • InstancePredicates

      public InstancePredicates()

  • Method Details

    • awaitAvailable

      public static com.google.common.base.Predicate<Instance> awaitAvailable(InstanceApi instanceApi)
      Wait until an Instance is Available.
      Parameters:
      instanceApi - The InstanceApi in the region where your Instance resides.
      Returns:
      RetryablePredicate That will check the status every 5 seconds for a maxiumum of 10 minutes.

    • awaitDeleted

      public static com.google.common.base.Predicate<Instance> awaitDeleted(InstanceApi instanceApi)
      Wait until an Instance no longer exists.
      Parameters:
      instanceApi - The InstanceApi in the region where your Instance resides.
      Returns:
      RetryablePredicate That will check whether the Instance exists. every 5 seconds for a maxiumum of 10 minutes.

    • awaitStatus

      public static com.google.common.base.Predicate<Instance> awaitStatus(InstanceApi instanceApi, Instance.Status status, long maxWaitInSec, long periodInSec)
      Wait until instance is in the status specified.
      Parameters:
      instanceApi - The InstanceApi in the region where your Instance resides.
      status - Wait until instance in in this status.
      maxWaitInSec - Maximum time to wait.
      periodInSec - Interval between retries.
      Returns:
      RetryablePredicate That will check whether the Instance exists.