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Mike Hadlow is a Brighton, UK based developer, blogger and author of a number of open source frameworks and applications. Mike is a DZone MVB and is not an employee of DZone and has posted 87 posts at DZone. You can read more from them at their website. View Full User Profile

EasyNetQ: Consumer Cancellation

11.16.2013
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Consumer cancellation has been a requested feature of EasyNetQ for a while now. I wasn’t intending to implement it immediately, but a pull request by Daniel White today made me look at the whole issue of consumer cancellation from the point of view of a deleted queue. It led rapidly to a quite straightforward implementation of user cancellations. The wonders of open source software development, and the generosity of people like Daniel, never fails to impress me.

So what is consumer cancellation? It means that you can stop consuming from a queue without having dispose of the entire IBus instance and close the connection. All the IBus Subscribe methods, and the IAdvancedBus Consume methods now return an IDisposable. To stop consuming, just call Dispose like this:

var cancelSubscription = bus.Subscribe<MyMessage>("subscriptionId", MessageHandler);
.
.
// sometime later stop consuming
cancelSubscription.Dispose();

Nice :)

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