Getting queue size

[asanand]

Is there any API available on channel (or it can be supported later) to get the current queue size .. I know that Rabbitmq monitoring API has option to get queue size, but just wondering if there is an API available from channel (Channel.cpp).. My usecase is that I just want to know the workload remaining to be consumed : I know I can go through all messages one-by-one and then determine the queue size. But, is there an alternate simple way?

[alanxz]

Yes: Channel::DeclareQueueWithCounts() does what you want.

[alanxz]

Closing this. If you have any further questions feel free to re-open this issue or open a new one.

[kreuzerkrieg]

is there any side effect or performance impact of polling the channel with Channel::DeclareQueueWithCounts?

[alanxz]

@kreuzerkrieg from a Client's perspective each time you call Channel::DeclareQueueWithCounts that is one round-trip to the broker. I'm not sure how efficiently the queue.declare method is implemented on the broker when called with the passive flag set. I presume you're interested in maintaining a count of the number of messages in a queue. You should ask on the rabbitmq-discuss@ email list about how well the broker might deal with this.