Elegant way of sending e-mails with Service Broker

Question

Is there an elegant way for sending e-mails using a Service Broker service/queue?

I want to setup an EVENT NOTIFICATION for SQL Server, and I'd like to send e-mails to operators for each message on the queue.

According to the book SQL Server 2005 DBA Street Smarts: A Real World Guide to SQL Server 2005 Certification Skills, Database Mail uses the Service Broker:

Additionaly, Database Mail is scalable because it uses the Service Broker queue, which allows the requests to be handled asynchronously and even saves the request if the server goes down before it can be handled.

Maybe I'm too off base here, but, is there a way I can send messages directly to the Database Mail queue using Service Broker?

If I have to set up a stored procedure for sending an e-mail on behalf of Service Broker, I think it should be easier to just setup a job on the SQL Server Agent to check for the events I'm interested in inside the error log and send the operators an e-mail.

I'm open to suggestions.

Answer 1

is there a way I can send messages directly to the Database Mail queue using Service Broker

When you invoke sp_send_dbmail that is exactly what is happening.

I want to setup an EVENT NOTIFICATION for SQL Server, and I'd like to send e-mails to operators for each message on the queue

Then do just that. Create an activated stored procedure on the queue of your service that receives the notifications and have it RECEIVE the message and invokes sp_send_dbmail.

I think you are trying to 'cut out the middleman' and have the EVENT NOTIFICATION send the notification directly to the DB Mail queue. That is not possible because the code that handles the messages arriving in the DB Mail queue expects the messages to have a certain format (ie. the one created by sp_send_dbmail). The messages sent by Event Notifications would have a completely different format and the DB Mail processor would choke as it does not understand them. In order to prevent exactly such situation Service Broker services are bound to specific contracts and DB Mail service does not accept the http://schemas.microsoft.com/SQL/Notifications/PostEventNotification contract used by Event Notifications.