I tried the max-queues virtual host limit but could not get it to work

[shaileshlaghane]

Describe the bug

We have a rabbitmq cluster, wherein we have defined a limit on max-queues per vhost, however I observed current number of queues in particular vhost is more than what is defined in limits

Reproduction steps

.

Expected behavior

Queues should not exceed the limit defined.

Additional context

No response

[michaelklishin]

@shaileshlaghane this is not a bug report, this is an insult to open source software maintainers. If you cannot be bothered to even mention the set of steps to reproduce — which for this feature should be trivial — we won't bother to spend a second investigating.

In fact, we don't even have any details on the RabbitMQ version used.

This feature is known to work at scale at a number of RabbitMQ-as-a-Service environments, so without a way to reproduce against 4.0.7 all I can suggest is "you have the source, go solve your own problem".

[michaelklishin]

Given the following limit:

rabbitmqadmin --vhost github-13521 list vhost_limits
# => ┌──────────────┬───────────────┐
# => │ vhost        │ limits        │
# => ├──────────────┼───────────────┤
# => │ github-13521 │ max-queues: 4 │
# => │              │               │
# => └──────────────┴───────────────┘

The limit is enforced, as expected:

c = Bunny.new(vhost: "github-13521"); c.start
# => #<Bunny::Session:0x5110 [email protected]:5672, vhost=github-13521, addresses=[127.0.0.1:5672]>
ch = c.create_channel
# => #<Bunny::Channel:12168 @id=1 @connection=#<Bunny::Session:0x5110 [email protected]:5672, vhost=github-13521, addresses=[127.0.0.1:5672]> @open=true>
ch = c.create_channel
# => #<Bunny::Channel:14808 @id=2 @connection=#<Bunny::Session:0x5110 [email protected]:5672, vhost=github-13521, addresses=[127.0.0.1:5672]> @open=true>
qq = ch.quorum_queue("qq.1")
# => /path/to/bunny.git/lib/bunny/channel.rb:2078:in 'Bunny::Channel#raise_if_continuation_resulted_in_a_channel_error!': PRECONDITION_FAILED - cannot declare queue 'qq.1': queue limit in vhost 'github-13521' (4) is reached (Bunny::PreconditionFailed)

@shaileshlaghane I have provided enough evidence that the feature does work as expected.