0e2b667bf1
The callback modules have been available in neutron-lib since commit [1] and are ready for consumption. As the callback registry is implemented with a singleton manager instance, sync complications can arise ensuring all consumers switch to lib's implementation at the same time. Therefore this consumption has been broken down: 1) Shim neutron's callbacks using lib's callback system and remove existing neutron internals related to callbacks (devref, UTs, etc.). 2) Switch all neutron's callback imports over to neutron-lib's. 3) Have all sub-projects using callbacks move their imports over to use neutron-lib's callbacks implementation. 4) Remove the callback shims in neutron-lib once sub-projects are moved over to lib's callbacks. 5) Follow-on patches moving our existing uses of callbacks to the new event payload model provided by neutron-lib.callback.events This patch implements #2 from above, moving all neutron's callback imports to use neutron-lib's callbacks. There are also a few places in the UT code that still patch callbacks, we can address those in step #4 which may need [2]. NeutronLibImpact [1] fea8bb64ba7ff52632c2bd3e3298eaedf623ee4f [2] I9966c90e3f90552b41ed84a68b19f3e540426432 Change-Id: I8dae56f0f5c009bdf3e8ebfa1b360756216ab886 |
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| service_providers | ||
| README | ||
| __init__.py | ||
| l3_router_plugin.py | ||
README
This service plugin implements the L3 routing functionality (resources router
and floatingip) that in earlier releases before Havana was provided by core
plugins (openvswitch, linuxbridge, ... etc).
Core plugins can now choose not to implement L3 routing functionality and
instead delegate that to the L3 routing service plugin.
The required changes to a core plugin are in that case:
- Do not inherit 'l3_db.L3_NAT_db_mixin' (or its descendants like extraroute)
anymore.
- Remove "router" from 'supported_extension_aliases'.
- Modify any 'self' references to members in L3_NAT_db_mixin to instead use
'directory.get_plugin(constants.L3)'
For example,
self.prevent_l3_port_deletion(...)
becomes something like
plugin = directory.get_plugin(constants.L3)
if plugin:
plugin.prevent_l3_port_deletion(...)
If the core plugin has relied on the L3Agent the following must also be changed:
- Do not inherit 'l3_rpc_base.L3RpcCallbackMixin' in any '*RpcCallbacks' class.
- Do not be a consumer of the topics.L3PLUGIN topic for RPC.
To use the L3 routing service plugin, add
'neutron.services.l3_router.l3_router_plugin.L3RouterPlugin'
to 'service_plugins' in '/etc/neutron/neutron.conf'.
That is,
service_plugins = neutron.services.l3_router.l3_router_plugin.L3RouterPlugin