protected override IEnumerator <IAsyncResult> CreateQueueImpl(IAccountIdentifier identity, string account, string queue, long defaultMessageTtl, long defaultMessageVisibilityTimeout, NameValueCollection metadata, TimeSpan?timeout, RequestContext requestContext, AsyncIteratorContext <CreateQueueResult> context)
{
RemainingTime remainingTime = new RemainingTime(timeout);
List <SASPermission> sASPermissions = new List <SASPermission>()
{
SASPermission.Write,
SASPermission.Create
};
SASAuthorizationParameters sASAuthorizationParameter = this.authorizationManager.CheckAccessWithMultiplePermissions(identity, account, null, null, PermissionLevel.Write, SasType.AccountSas, SasResourceType.Container, sASPermissions, remainingTime);
if (metadata == null)
{
metadata = new NameValueCollection();
}
IStorageAccount storageAccount = this.storageManager.CreateAccountInstance(account);
IAsyncResult asyncResult = base.BeginGetQueueProperties(identity, account, queue, false, sASAuthorizationParameter, new TimeSpan?(remainingTime), requestContext, context.GetResumeCallback(), context.GetResumeState("QueueManager.CreateQueueImpl"));
yield return(asyncResult);
QueueProperties queueProperty = null;
bool flag = true;
try
{
queueProperty = base.EndGetQueueProperties(asyncResult);
}
catch (ContainerNotFoundException containerNotFoundException)
{
flag = false;
}
if (!flag)
{
Logger <IRestProtocolHeadLogger> .Instance.Info.Log("Contacting XAC Server in order to create the queue");
storageAccount.Timeout = remainingTime;
DateTime?nullable = null;
asyncResult = storageAccount.BeginCreateQueueContainer(queue, nullable, null, QueueHelpers.SerializeMetadata(metadata), context.GetResumeCallback(), context.GetResumeState("QueueManager.CreateQueueImpl"));
yield return(asyncResult);
bool flag1 = false;
try
{
storageAccount.EndCreateQueueContainer(asyncResult);
}
catch (ContainerAlreadyExistsException containerAlreadyExistsException)
{
flag1 = true;
}
if (flag1)
{
flag = true;
asyncResult = base.BeginGetQueueProperties(identity, account, queue, false, new TimeSpan?(remainingTime), requestContext, context.GetResumeCallback(), context.GetResumeState("QueueManager.CreateQueueImpl"));
try
{
queueProperty = base.EndGetQueueProperties(asyncResult);
}
catch (ContainerNotFoundException containerNotFoundException1)
{
flag = false;
}
if (flag)
{
if (!QueueHelpers.IsMetadataSame(queueProperty.Metadata, metadata))
{
throw new ContainerAlreadyExistsException(string.Concat("Queue '", queue, "' already exists, and the metadata is different."));
}
context.ResultData = CreateQueueResult.AlreadyExists;
}
}
}
else
{
Logger <IRestProtocolHeadLogger> .Instance.Info.Log("Queue already exists no need to contact XAC Server.");
if (!QueueHelpers.IsMetadataSame(queueProperty.Metadata, metadata))
{
throw new ContainerAlreadyExistsException(string.Concat("Queue '", queue, "' already exists, and the metadata is different."));
}
context.ResultData = CreateQueueResult.AlreadyExists;
}
}
