neutron messages not being received by astara

[Adam Gandelman]

Not sure if this is a bug with the devstack plugin, or what.. but its reproducible in the gate and locally.

Simply, neutron messages aren't being received by astara. This is causing gate tests to fail, because the test creates a resource and waits for a corresponding nova instance to show up. Spinning up devstack locally, manually creating routers results in 0 activity on the astara side.

[Adam Gandelman (gandelman-a)]

confirmed this is an issue with the newer 5.x release of oslo.messaging. Downgrading locally to 4.5.0 seems to fix messaging. Not certain its a bug in oslo.messaging, or an issue with how we are using it.

[Adam Gandelman (gandelman-a)]

A quick git bisect leads me to 5d7d7253d10a4e60a1796ff4e99dd67176fb067f: https://review.openstack.org/#/c/300727/

Tagging oslo.messaging for now

[Adam Gandelman (gandelman-a)]

here's a simple test, hoping to solicit some help here from oslo.messaging devs

[Mehdi Abaakouk (sileht)]

Blocking executor was having a design issue. start was not returning like other executor, that was a bug, that have been fixed in 5.0.0, I'm sorry that you application have been broken since the bug is fixed.

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/319443
Committed: https://git.openstack.org/cgit/openstack/astara/commit/?id=6a934060f0aacafacafd347cb2e61aa956ad65ee
Submitter: Jenkins
Branch: master

commit 6a934060f0aacafacafd347cb2e61aa956ad65ee
Author: Adam Gandelman <email address hidden>
Date: Fri May 20 13:19:51 2016 -0700

    Fix messaging layer for newer oslo.messaging changes

    Instead of spawning our own threads and relying on the oslo.messaging
    executor blocking, lets just use oslo.messaging's internal threading
    capabilities. This converts rpc.Connection to rpc.MessagingService,
    which is an oslo.service-based service and sets up messaging to managed
    there instead.

    Closes-bug: #1583330

    Change-Id: I9f5a15f1c5dff7e90761887c519a15888096636b

[Doug Hellmann (doug-hellmann)]

This issue was fixed in the openstack/astara 9.0.0.0b1 development milestone.