private bool DeleteInstanceInternal(IComparable instanceId, bool replicate, long evictionVersion)
{
Requires.Argument("instanceId", instanceId).NotNull();
StatefulServiceExecutionContext executionContext = StatefulServiceExecutionContext.Current as StatefulServiceExecutionContext;
if (executionContext == null || executionContext.Partition == null)
{
throw new InvalidOperationException("Program instance cannot be obtained outside context of a partition. Please ensure that StatefulServiceReplicaT.Invoke is called.");
}
StatefulProgramInstance instance = null;
ItemCollection <IComparable, StatefulProgramInstance> instances;
using (this.instanceManager.GetInstances(LockPermission.Write, out instances))
{
if (instances.Contains(instanceId))
{
instance = (StatefulProgramInstance)instances[instanceId];
if (evictionVersion != -2 && !instance.CanEvict(evictionVersion))
{
return(false);
}
instances.Remove(instanceId);
((IDisposable)instance).Dispose();
}
}
if (instance != null)
{
if (replicate)
{
Replicable <StatefulProgramInstance> replicable = new Replicable <StatefulProgramInstance>(instance.Id.ToString(), instance);
ReplicationScope replicationScope = new ReplicationScope(new Replicable[] { replicable }, ReplicationOperationType.Evict);
replicationScope.ReplicateAsync().ContinueWith(
task =>
{
ReplicationResult result = task.IsFaulted ? ReplicationResult.Failed : task.Result;
if (result != ReplicationResult.Success)
{
AppTrace.TraceMsg(TraceLogEventType.Warning, "StatefulServiceReplicaT.DeleteInstanceInternal", "Replication call to dispose the instance with id {0} failed.", instance.Id);
}
},
TaskContinuationOptions.ExecuteSynchronously);
}
return(true);
}
else
{
return(false);
}
}
