.. This work is licensed under a Creative Commons Attribution 3.0 Unported License. http://creativecommons.org/licenses/by/3.0/legalcode ========================================== Migrate to oslo-messaging ========================================== Problem description =================== Neutron currently uses an older version of Oslo's RPC code which is being deprecated in favor of oslo.messaging. Proposed change =============== Neutron will be updated to utilize oslo.messaging and the copied code from oslo-incubator will be removed from the tree. Alternatives ------------ None. oslo.messaging is the only supported RPC framework from the Oslo team. Data model impact ----------------- None REST API impact --------------- None Security impact --------------- None Notifications impact -------------------- The content of the notifications should not change; however, configuration options will slightly change. Other end user impact --------------------- The underlying library uses the compatible wire format, so users upgrading should not be impacted. Performance Impact ------------------ This is a code refactor for a new library api, so performance changes will be minimal. Other deployer impact --------------------- Configuration options will change slightly to utilize the standard set from oslo.messaging. The options are standard across other OpenStack projects, so deployers will benefit from the standardization. Developer impact ---------------- None. Shims will be used to provide compatibility with internal code interfaces. Implementation ============== Assignee(s) ----------- ihrachys Work Items ---------- - Introduce shims modules for existing RPC classes with Neutron - Introduce exception compatibility layer - Convert shims to use oslo.messaging constructs - Future work could include removal of shims, but this can be done later. Dependencies ============ None Testing ======= Exisiting Unit, Functional, and Tempest tests will ensure the refactor does not introduce any regressions. Grenade testing should validate that the message payload are compatible. Documentation Impact ==================== Messaging configuration will need to be updated to reflect the set of options provided by oslo.messaging. References ========== N/A