Has anybody used Elixir to check the length of a RabbitMQ queue? It can be done with declare_queue , but it’s ugly - you have to pass the exact option you originally declared the queue with, plus :passive. The use case is to detect when the system is backing up and respond accordingly.

If you can use GenRmq then it has message count , message_count functions.

@collegeimprovements Oh thanks - that led me to the underlying function: AMQP.Queue — amqp v1.4.2 . Works great!

Glad to see this :slight_smile:

For anyone who stumbles on this later: AMQP only supports getting the number of messages that are “Ready”, not those that are “unacked”. For the latter, you might have to use RabbitMQ’s REST API. See https://stackoverflow.com/questions/63018151/can-i-see-the-count-of-unacked-messages-in-rabbitmq-via…

Elixir Programming Language Forum

Monitor RabbitMQ queue length from Elixir?

Questions & Help Questions

collegeimprovements July 29, 2020, 5:44am 4

Glad to see this