protected void PurgeMessagesFromEndpoint(Endpoint endpoint)
{
Predicate <BrokeredMessage> deleteMessageChecker = (brokeredMessage) => true;
var anyDeletions = MessageServices.DeleteSelectedMessagesFromEndpoint(endpoint, deleteMessageChecker);
if (!anyDeletions)
{
throw new APIWarning(
"No messages were deleted. The endpoint may have been empty, or the messages may have already been consumed by another process.");
}
}
protected void DeleteSingleMessageFromEndpoint(Endpoint endpoint, string messageId, string uniqueId)
{
if (!endpoint.SupportsSingleMessageDeletion())
{
throw new NotSupportedException(
@"Deleting single live message is no longer supported by the backend API.
By design, Service Bus doesn't allow targetted deletion of a single message,
so in order to achive that, we Receive() messages until we get the one we
want to delete. We then Complete() the message we want to delete, and
Abandon() all the others. This is a problem because there is a queue/subscription
behaviour that sends the message to the deadletters if it is repeatedly Received
and Abandoned enough times, (limit determined by 'Max Delivery Count' property)"
);
}
Predicate <BrokeredMessage> deleteMessageChecker = (brokeredMessage) =>
{
if (messageId == brokeredMessage.MessageId)
{
BodyAndHash bodyAndHash = brokeredMessage.GetBodyAndHash();
return(bodyAndHash.Hash.ToString() == uniqueId);
}
else
{
return(false);
}
};
var anyDeletions = MessageServices.DeleteSelectedMessagesFromEndpoint(endpoint, deleteMessageChecker);
if (!anyDeletions)
{
throw new APIError(
@"No messages were deleted. The intended messages may have already been consumed by another process.
Please reload the message list and try again.");
}
}
