Files
neutron/neutron/services/advanced_service.py
T
Ihar Hrachyshka 22328baf1f Migrate to oslo.log
It's mostly a matter of changing imports to a new location.

Non-obvious changes needed:
* pass overwrite= argument to oslo_context since oslo.log reads context
  from its thread local store and not local.store from incubator
* don't store context at local.store now that there is no code that
  would consume it
* LOG.deprecated() -> versionutils.report_deprecated_feature()
* dropped LOG.audit check from hacking rule since now the method does
  not exist
* WritableLogger is now located in oslo_log.loggers

Dropped log module from the tree. Also dropped local module that is now
of no use (and obsolete, as per oslo team).

Added versionutils back to openstack-common.conf since now we use the
module directly from neutron code and not just as a dependency of some
other oslo-incubator module.

Note: tempest tests are expected to be broken now, so instead of fixing
all the oslo.log related issues for the subtree in this patch, I only
added TODOs with directions for later fix.

Closes-Bug: #1425013
Change-Id: I310e059a815377579de6bb2aa204de168e72571e
2015-03-12 11:22:56 +01:00

73 lines
2.7 KiB
Python

# Copyright 2014 OpenStack Foundation.
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
from oslo_log import log as logging
LOG = logging.getLogger(__name__)
class AdvancedService(object):
"""Observer base class for Advanced Services.
Base class for service types. This should not be instantiated normally.
Instead, a child class is defined for each service type and instantiated
by the corresponding service agent. The instances will have a back
reference to the L3 agent, and will register as an observer of events.
This base class provides a definition for all of the L3 event handlers
that a service could "observe". A child class for a service type will
implement handlers, for events of interest.
"""
def __init__(self, l3_agent):
"""Base class for an advanced service.
Do not directly instantiate objects of this class. Should only be
called indirectly by a child class's instance() invocation.
"""
self.l3_agent = l3_agent
# NOTE: Copying L3 agent attributes, so that they are accessible
# from device drivers, which are now provided a service instance.
# TODO(pcm): Address this in future refactorings.
self.conf = l3_agent.conf
# NOTE: Handler definitions for events generated by the L3 agent.
# Subclasses of AdvancedService can override these to perform service
# specific actions. Unique methods are defined for add/update, as
# some services may want to take different actions.
def before_router_added(self, ri):
"""Actions taken before router_info created."""
pass
def after_router_added(self, ri):
"""Actions taken after router_info created."""
pass
def before_router_updated(self, ri):
"""Actions before processing for an updated router."""
pass
def after_router_updated(self, ri):
"""Actions add processing for an updated router."""
pass
def before_router_removed(self, ri):
"""Actions before removing router."""
pass
def after_router_removed(self, ri):
"""Actions after processing and removing router."""
pass