use neutron-lib callbacks

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

neutron/agent/l3/agent.py

@@ -15,6 +15,9 @@
 
 import eventlet
 import netaddr
+from neutron_lib.callbacks import events
+from neutron_lib.callbacks import registry
+from neutron_lib.callbacks import resources
 from neutron_lib import constants as lib_const
 from neutron_lib import context as n_context
 from oslo_config import cfg
@@ -45,9 +48,6 @@ from neutron.agent.linux import ip_lib
 from neutron.agent.linux import pd
 from neutron.agent.metadata import driver as metadata_driver
 from neutron.agent import rpc as agent_rpc
-from neutron.callbacks import events
-from neutron.callbacks import registry
-from neutron.callbacks import resources
 from neutron.common import constants as l3_constants
 from neutron.common import exceptions as n_exc
 from neutron.common import ipv6_utils

neutron/agent/linux/pd.py

@@ -17,6 +17,9 @@ import functools
 import signal
 
 import eventlet
+from neutron_lib.callbacks import events
+from neutron_lib.callbacks import registry
+from neutron_lib.callbacks import resources
 from neutron_lib import constants as n_const
 from oslo_config import cfg
 from oslo_log import log as logging
@@ -25,9 +28,6 @@ import six
 from stevedore import driver
 
 from neutron._i18n import _, _LE
-from neutron.callbacks import events
-from neutron.callbacks import registry
-from neutron.callbacks import resources
 from neutron.common import constants as l3_constants
 from neutron.common import utils
 

neutron/agent/metadata/driver.py

@@ -18,6 +18,9 @@ import grp
 import os
 import pwd
 
+from neutron_lib.callbacks import events
+from neutron_lib.callbacks import registry
+from neutron_lib.callbacks import resources
 from oslo_config import cfg
 from oslo_log import log as logging
 
@@ -25,9 +28,6 @@ from neutron._i18n import _
 from neutron.agent.l3 import ha_router
 from neutron.agent.l3 import namespaces
 from neutron.agent.linux import external_process
-from neutron.callbacks import events
-from neutron.callbacks import registry
-from neutron.callbacks import resources
 from neutron.common import constants
 from neutron.common import exceptions
 

neutron/api/rpc/agentnotifiers/dhcp_rpc_agent_api.py

@@ -13,6 +13,9 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+from neutron_lib.callbacks import events
+from neutron_lib.callbacks import registry
+from neutron_lib.callbacks import resources
 from neutron_lib import constants
 from neutron_lib.plugins import directory
 from oslo_config import cfg
@@ -20,9 +23,6 @@ from oslo_log import log as logging
 import oslo_messaging
 
 from neutron._i18n import _LE, _LW
-from neutron.callbacks import events
-from neutron.callbacks import registry
-from neutron.callbacks import resources
 from neutron.common import constants as n_const
 from neutron.common import rpc as n_rpc
 from neutron.common import topics

neutron/api/rpc/callbacks/resource_manager.py

@@ -13,12 +13,12 @@
 import abc
 import collections
 
+from neutron_lib.callbacks import exceptions
 from oslo_log import log as logging
 import six
 
 from neutron.api.rpc.callbacks import exceptions as rpc_exc
 from neutron.api.rpc.callbacks import resources
-from neutron.callbacks import exceptions
 
 LOG = logging.getLogger(__name__)
 

neutron/api/rpc/handlers/dhcp_rpc.py

@@ -18,6 +18,7 @@ import itertools
 import operator
 
 from neutron_lib.api.definitions import portbindings
+from neutron_lib.callbacks import resources
 from neutron_lib import constants
 from neutron_lib import exceptions
 from neutron_lib.plugins import directory
@@ -28,7 +29,6 @@ import oslo_messaging
 from oslo_utils import excutils
 
 from neutron._i18n import _, _LW
-from neutron.callbacks import resources
 from neutron.common import constants as n_const
 from neutron.common import exceptions as n_exc
 from neutron.common import utils

neutron/api/v2/base.py

@@ -17,6 +17,8 @@ import collections
 import copy
 
 import netaddr
+from neutron_lib.callbacks import events
+from neutron_lib.callbacks import registry
 from neutron_lib import exceptions
 from oslo_log import log as logging
 from oslo_policy import policy as oslo_policy
@@ -27,8 +29,6 @@ from neutron._i18n import _, _LE, _LI
 from neutron.api import api_common
 from neutron.api.v2 import attributes
 from neutron.api.v2 import resource as wsgi_resource
-from neutron.callbacks import events
-from neutron.callbacks import registry
 from neutron.common import constants as n_const
 from neutron.common import exceptions as n_exc
 from neutron.common import rpc as n_rpc

neutron/db/agents_db.py

@@ -18,6 +18,9 @@ import datetime
 import debtcollector
 from eventlet import greenthread
 from neutron_lib.api import converters
+from neutron_lib.callbacks import events
+from neutron_lib.callbacks import registry
+from neutron_lib.callbacks import resources
 from neutron_lib import constants
 from neutron_lib import context
 from neutron_lib.plugins import directory
@@ -33,9 +36,6 @@ from sqlalchemy import sql
 from neutron._i18n import _, _LE, _LI, _LW
 from neutron.agent.common import utils
 from neutron.api.rpc.callbacks import version_manager
-from neutron.callbacks import events
-from neutron.callbacks import registry
-from neutron.callbacks import resources
 from neutron.common import constants as n_const
 from neutron.db import _model_query as model_query
 from neutron.db import _utils as db_utils

neutron/db/availability_zone/router.py

@@ -11,12 +11,12 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from neutron_lib.callbacks import events
+from neutron_lib.callbacks import registry
+from neutron_lib.callbacks import resources
 from neutron_lib import constants
 from neutron_lib.plugins import directory
 
-from neutron.callbacks import events
-from neutron.callbacks import registry
-from neutron.callbacks import resources
 from neutron.common import utils
 from neutron.db import _resource_extend as resource_extend
 from neutron.db import l3_attrs_db

neutron/db/db_base_plugin_v2.py

@@ -17,6 +17,10 @@ import functools
 
 import netaddr
 from neutron_lib.api import validators
+from neutron_lib.callbacks import events
+from neutron_lib.callbacks import exceptions
+from neutron_lib.callbacks import registry
+from neutron_lib.callbacks import resources
 from neutron_lib import constants
 from neutron_lib import context as ctx
 from neutron_lib import exceptions as exc
@@ -33,10 +37,6 @@ from sqlalchemy import not_
 from neutron._i18n import _, _LE, _LI
 from neutron.api.rpc.agentnotifiers import l3_rpc_agent_api
 from neutron.api.v2 import attributes
-from neutron.callbacks import events
-from neutron.callbacks import exceptions
-from neutron.callbacks import registry
-from neutron.callbacks import resources
 from neutron.common import constants as n_const
 from neutron.common import exceptions as n_exc
 from neutron.common import ipv6_utils

neutron/db/dvr_mac_db.py

@@ -14,6 +14,9 @@
 #    under the License.
 
 from neutron_lib.api.definitions import portbindings
+from neutron_lib.callbacks import events
+from neutron_lib.callbacks import registry
+from neutron_lib.callbacks import resources
 from neutron_lib import constants
 from neutron_lib import exceptions as n_exc
 from neutron_lib.plugins import directory
@@ -26,9 +29,6 @@ from sqlalchemy import or_
 from sqlalchemy.orm import exc
 
 from neutron._i18n import _, _LE
-from neutron.callbacks import events
-from neutron.callbacks import registry
-from neutron.callbacks import resources
 from neutron.common import utils
 from neutron.db import api as db_api
 from neutron.db.models import dvr as dvr_models

neutron/db/external_net_db.py

@@ -14,6 +14,9 @@
 #    under the License.
 
 from neutron_lib.api import validators
+from neutron_lib.callbacks import events
+from neutron_lib.callbacks import registry
+from neutron_lib.callbacks import resources
 from neutron_lib import constants
 from neutron_lib import exceptions as n_exc
 from neutron_lib.plugins import directory
@@ -21,9 +24,6 @@ from sqlalchemy.sql import expression as expr
 
 from neutron._i18n import _
 from neutron.api.v2 import attributes
-from neutron.callbacks import events
-from neutron.callbacks import registry
-from neutron.callbacks import resources
 from neutron.db import _model_query as model_query
 from neutron.db import _resource_extend as resource_extend
 from neutron.db import _utils as db_utils

neutron/db/l3_db.py

@@ -19,6 +19,10 @@ import random
 from debtcollector import removals
 import netaddr
 from neutron_lib.api import validators
+from neutron_lib.callbacks import events
+from neutron_lib.callbacks import exceptions
+from neutron_lib.callbacks import registry
+from neutron_lib.callbacks import resources
 from neutron_lib import constants
 from neutron_lib import context as n_ctx
 from neutron_lib import exceptions as n_exc
@@ -31,10 +35,6 @@ from sqlalchemy.orm import exc
 
 from neutron._i18n import _, _LE, _LI, _LW
 from neutron.api.rpc.agentnotifiers import l3_rpc_agent_api
-from neutron.callbacks import events
-from neutron.callbacks import exceptions
-from neutron.callbacks import registry
-from neutron.callbacks import resources
 from neutron.common import constants as n_const
 from neutron.common import ipv6_utils
 from neutron.common import rpc as n_rpc

neutron/db/l3_dvr_db.py

@@ -15,6 +15,10 @@ import collections
 
 from neutron_lib.api.definitions import portbindings
 from neutron_lib.api import validators
+from neutron_lib.callbacks import events
+from neutron_lib.callbacks import exceptions
+from neutron_lib.callbacks import registry
+from neutron_lib.callbacks import resources
 from neutron_lib import constants as const
 from neutron_lib import exceptions as n_exc
 from neutron_lib.plugins import directory
@@ -25,10 +29,6 @@ from oslo_utils import excutils
 import six
 
 from neutron._i18n import _, _LE, _LI, _LW
-from neutron.callbacks import events
-from neutron.callbacks import exceptions
-from neutron.callbacks import registry
-from neutron.callbacks import resources
 from neutron.common import constants as l3_const
 from neutron.common import utils as n_utils
 from neutron.db import api as db_api

neutron/db/l3_dvrscheduler_db.py

@@ -14,14 +14,14 @@
 #    under the License.
 
 from neutron_lib.api.definitions import portbindings
+from neutron_lib.callbacks import events
+from neutron_lib.callbacks import registry
+from neutron_lib.callbacks import resources
 from neutron_lib import constants as n_const
 from neutron_lib.plugins import directory
 from oslo_log import log as logging
 from sqlalchemy import or_
 
-from neutron.callbacks import events
-from neutron.callbacks import registry
-from neutron.callbacks import resources
 from neutron.common import utils as n_utils
 
 from neutron.db import agentschedulers_db

neutron/db/l3_hamode_db.py

@@ -19,6 +19,9 @@ import netaddr
 from neutron_lib.api.definitions import portbindings
 from neutron_lib.api.definitions import provider_net as providernet
 from neutron_lib.api import validators
+from neutron_lib.callbacks import events
+from neutron_lib.callbacks import registry
+from neutron_lib.callbacks import resources
 from neutron_lib import constants
 from neutron_lib import exceptions as n_exc
 from oslo_config import cfg
@@ -33,9 +36,6 @@ from sqlalchemy import orm
 
 from neutron._i18n import _, _LE, _LI, _LW
 from neutron.api.v2 import attributes
-from neutron.callbacks import events
-from neutron.callbacks import registry
-from neutron.callbacks import resources
 from neutron.common import constants as n_const
 from neutron.common import utils as n_utils
 from neutron.db import _utils as db_utils

neutron/db/l3_hascheduler_db.py

@@ -13,13 +13,13 @@
 # under the License.
 
 from neutron_lib.api.definitions import portbindings
+from neutron_lib.callbacks import events
+from neutron_lib.callbacks import registry
+from neutron_lib.callbacks import resources
 from neutron_lib import constants
 from neutron_lib.plugins import directory
 from sqlalchemy import func
 
-from neutron.callbacks import events
-from neutron.callbacks import registry
-from neutron.callbacks import resources
 from neutron.db import l3_agentschedulers_db as l3_sch_db
 from neutron.db.models import agent as agent_model
 from neutron.db.models import l3agent as rb_model

neutron/db/provisioning_blocks.py

@@ -13,11 +13,11 @@
 #    under the License.
 #
 
+from neutron_lib.callbacks import registry
+from neutron_lib.callbacks import resources
 from oslo_log import log as logging
 
 from neutron._i18n import _LE
-from neutron.callbacks import registry
-from neutron.callbacks import resources
 from neutron.db import api as db_api
 from neutron.db import models_v2
 from neutron.objects import provisioning_blocks as pb_obj

neutron/db/rbac_db_mixin.py

@@ -13,13 +13,13 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from neutron_lib.callbacks import events
+from neutron_lib.callbacks import exceptions as c_exc
+from neutron_lib.callbacks import registry
 from neutron_lib import exceptions as n_exc
 from oslo_db import exception as db_exc
 from sqlalchemy.orm import exc
 
-from neutron.callbacks import events
-from neutron.callbacks import exceptions as c_exc
-from neutron.callbacks import registry
 from neutron.db import _model_query as model_query
 from neutron.db import _utils as db_utils
 from neutron.db import api as db_api

neutron/db/securitygroups_db.py

@@ -14,6 +14,10 @@
 
 import netaddr
 from neutron_lib.api import validators
+from neutron_lib.callbacks import events
+from neutron_lib.callbacks import exceptions
+from neutron_lib.callbacks import registry
+from neutron_lib.callbacks import resources
 from neutron_lib import constants
 from neutron_lib.utils import helpers
 from oslo_utils import uuidutils
@@ -22,10 +26,6 @@ from sqlalchemy.orm import scoped_session
 
 from neutron._i18n import _
 from neutron.api.v2 import attributes
-from neutron.callbacks import events
-from neutron.callbacks import exceptions
-from neutron.callbacks import registry
-from neutron.callbacks import resources
 from neutron.common import constants as n_const
 from neutron.common import utils
 from neutron.db import _model_query as model_query

neutron/db/segments_db.py

@@ -10,13 +10,13 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from neutron_lib.callbacks import events
+from neutron_lib.callbacks import registry
+from neutron_lib.callbacks import resources
 from oslo_log import log as logging
 from oslo_utils import uuidutils
 
 from neutron._i18n import _LI
-from neutron.callbacks import events
-from neutron.callbacks import registry
-from neutron.callbacks import resources
 from neutron.db import api as db_api
 from neutron.db.models import segment as segments_model
 from neutron.objects import base as base_obj

neutron/notifiers/nova.py

@@ -14,6 +14,9 @@
 #    under the License.
 
 from keystoneauth1 import loading as ks_loading
+from neutron_lib.callbacks import events
+from neutron_lib.callbacks import registry
+from neutron_lib.callbacks import resources
 from neutron_lib import constants
 from neutron_lib import context
 from neutron_lib import exceptions as exc
@@ -27,9 +30,6 @@ from oslo_utils import uuidutils
 from sqlalchemy.orm import attributes as sql_attr
 
 from neutron._i18n import _LE, _LI, _LW
-from neutron.callbacks import events
-from neutron.callbacks import registry
-from neutron.callbacks import resources
 from neutron.notifiers import batch_notifier
 
 

neutron/objects/rbac_db.py

@@ -15,14 +15,14 @@
 import abc
 import itertools
 
+from neutron_lib.callbacks import events
+from neutron_lib.callbacks import registry
 from neutron_lib import exceptions as lib_exc
 from six import add_metaclass
 from six import with_metaclass
 from sqlalchemy import and_
 
 from neutron._i18n import _
-from neutron.callbacks import events
-from neutron.callbacks import registry
 from neutron.common import exceptions as n_exc
 from neutron.db import _utils as db_utils
 from neutron.db import api as db_api

neutron/pecan_wsgi/hooks/notifier.py

@@ -13,11 +13,11 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from neutron_lib.callbacks import events
+from neutron_lib.callbacks import registry
 from oslo_log import log
 from pecan import hooks
 
-from neutron.callbacks import events
-from neutron.callbacks import registry
 from neutron.common import rpc as n_rpc
 from neutron.pecan_wsgi import constants as pecan_constants
 from neutron.pecan_wsgi.hooks import utils

neutron/plugins/ml2/db.py

@@ -15,6 +15,9 @@
 
 from debtcollector import removals
 from neutron_lib.api.definitions import portbindings
+from neutron_lib.callbacks import events
+from neutron_lib.callbacks import registry
+from neutron_lib.callbacks import resources
 from neutron_lib import constants as n_const
 from neutron_lib.plugins import directory
 from oslo_db import exception as db_exc
@@ -25,9 +28,6 @@ from sqlalchemy import or_
 from sqlalchemy.orm import exc
 
 from neutron._i18n import _, _LE
-from neutron.callbacks import events
-from neutron.callbacks import registry
-from neutron.callbacks import resources
 from neutron.db import api as db_api
 from neutron.db.models import securitygroup as sg_models
 from neutron.db import models_v2

neutron/plugins/ml2/drivers/agent/_common_agent.py

@@ -19,6 +19,9 @@ import contextlib
 import sys
 import time
 
+from neutron_lib.callbacks import events
+from neutron_lib.callbacks import registry
+from neutron_lib.callbacks import resources as local_resources
 from neutron_lib import constants
 from neutron_lib import context
 from oslo_config import cfg
@@ -34,9 +37,6 @@ from neutron.agent import rpc as agent_rpc
 from neutron.agent import securitygroups_rpc as agent_sg_rpc
 from neutron.api.rpc.callbacks import resources
 from neutron.api.rpc.handlers import securitygroups_rpc as sg_rpc
-from neutron.callbacks import events
-from neutron.callbacks import registry
-from neutron.callbacks import resources as local_resources
 from neutron.common import config as common_config
 from neutron.common import constants as n_const
 from neutron.common import topics

neutron/plugins/ml2/drivers/agent/capabilities.py

@@ -11,8 +11,8 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-from neutron.callbacks import events
-from neutron.callbacks import registry
+from neutron_lib.callbacks import events
+from neutron_lib.callbacks import registry
 
 
 def notify_init_event(agent_type, agent):

neutron/plugins/ml2/drivers/mech_agent.py

@@ -16,12 +16,12 @@
 import abc
 
 from neutron_lib.api.definitions import portbindings
+from neutron_lib.callbacks import resources
 from neutron_lib import constants as const
 from oslo_log import log
 import six
 
 from neutron._i18n import _LW
-from neutron.callbacks import resources
 from neutron.db import provisioning_blocks
 from neutron.plugins.common import constants as p_constants
 from neutron.plugins.ml2 import driver_api as api

neutron/plugins/ml2/drivers/openvswitch/agent/ovs_neutron_agent.py

@@ -23,6 +23,9 @@ import time
 
 import netaddr
 from neutron_lib.api.definitions import portbindings
+from neutron_lib.callbacks import events as callback_events
+from neutron_lib.callbacks import registry
+from neutron_lib.callbacks import resources as callback_resources
 from neutron_lib import constants as n_const
 from neutron_lib import context
 from neutron_lib.utils import helpers
@@ -47,9 +50,6 @@ from neutron.agent import securitygroups_rpc as agent_sg_rpc
 from neutron.api.rpc.callbacks import resources
 from neutron.api.rpc.handlers import dvr_rpc
 from neutron.api.rpc.handlers import securitygroups_rpc as sg_rpc
-from neutron.callbacks import events as callback_events
-from neutron.callbacks import registry
-from neutron.callbacks import resources as callback_resources
 from neutron.common import config
 from neutron.common import constants as c_const
 from neutron.common import topics

neutron/plugins/ml2/drivers/openvswitch/mech_driver/mech_openvswitch.py

@@ -16,12 +16,12 @@
 import os
 
 from neutron_lib.api.definitions import portbindings
+from neutron_lib.callbacks import events
+from neutron_lib.callbacks import registry
 from neutron_lib import constants
 from oslo_config import cfg
 
 from neutron.agent import securitygroups_rpc
-from neutron.callbacks import events
-from neutron.callbacks import registry
 from neutron.plugins.common import constants as p_constants
 from neutron.plugins.ml2 import driver_api as api
 from neutron.plugins.ml2.drivers import mech_agent

neutron/plugins/ml2/extensions/dns_integration.py

@@ -14,14 +14,14 @@
 #    under the License.
 
 from neutron_lib.api import validators
+from neutron_lib.callbacks import events
+from neutron_lib.callbacks import registry
+from neutron_lib.callbacks import resources
 from neutron_lib.plugins import directory
 from oslo_config import cfg
 from oslo_log import log as logging
 
 from neutron._i18n import _LE, _LI
-from neutron.callbacks import events
-from neutron.callbacks import registry
-from neutron.callbacks import resources
 from neutron.db import models_v2
 from neutron.db import segments_db
 from neutron.extensions import dns

neutron/plugins/ml2/ovo_rpc.py

@@ -14,6 +14,9 @@
 import traceback
 
 import eventlet
+from neutron_lib.callbacks import events
+from neutron_lib.callbacks import registry
+from neutron_lib.callbacks import resources
 from neutron_lib import context as n_ctx
 from oslo_concurrency import lockutils
 from oslo_log import log as logging
@@ -21,9 +24,6 @@ from oslo_log import log as logging
 from neutron._i18n import _LE
 from neutron.api.rpc.callbacks import events as rpc_events
 from neutron.api.rpc.handlers import resources_rpc
-from neutron.callbacks import events
-from neutron.callbacks import registry
-from neutron.callbacks import resources
 from neutron.db import api as db_api
 from neutron.objects import network
 from neutron.objects import ports

neutron/plugins/ml2/plugin.py

@@ -19,6 +19,10 @@ from eventlet import greenthread
 from neutron_lib.api.definitions import portbindings
 from neutron_lib.api.definitions import provider_net
 from neutron_lib.api import validators
+from neutron_lib.callbacks import events
+from neutron_lib.callbacks import exceptions
+from neutron_lib.callbacks import registry
+from neutron_lib.callbacks import resources
 from neutron_lib import constants as const
 from neutron_lib import exceptions as exc
 from neutron_lib.plugins import directory
@@ -42,10 +46,6 @@ from neutron.api.rpc.handlers import metadata_rpc
 from neutron.api.rpc.handlers import resources_rpc
 from neutron.api.rpc.handlers import securitygroups_rpc
 from neutron.api.v2 import attributes
-from neutron.callbacks import events
-from neutron.callbacks import exceptions
-from neutron.callbacks import registry
-from neutron.callbacks import resources
 from neutron.common import constants as n_const
 from neutron.common import rpc as n_rpc
 from neutron.common import topics

neutron/plugins/ml2/rpc.py

@@ -14,6 +14,7 @@
 #    under the License.
 
 from neutron_lib.api.definitions import portbindings
+from neutron_lib.callbacks import resources
 from neutron_lib import constants as n_const
 from neutron_lib import exceptions
 from neutron_lib.plugins import directory
@@ -24,7 +25,6 @@ from sqlalchemy.orm import exc
 from neutron._i18n import _LE, _LW
 from neutron.api.rpc.handlers import dvr_rpc
 from neutron.api.rpc.handlers import securitygroups_rpc as sg_rpc
-from neutron.callbacks import resources
 from neutron.common import rpc as n_rpc
 from neutron.common import topics
 from neutron.db import l3_hamode_db

neutron/service.py

@@ -17,6 +17,9 @@ import inspect
 import os
 import random
 
+from neutron_lib.callbacks import events
+from neutron_lib.callbacks import registry
+from neutron_lib.callbacks import resources
 from neutron_lib import context
 from neutron_lib.plugins import directory
 from oslo_concurrency import processutils
@@ -29,9 +32,6 @@ from oslo_utils import excutils
 from oslo_utils import importutils
 
 from neutron._i18n import _LE, _LI
-from neutron.callbacks import events
-from neutron.callbacks import registry
-from neutron.callbacks import resources
 from neutron.common import config
 from neutron.common import profiler
 from neutron.common import rpc as n_rpc

neutron/services/auto_allocate/db.py

@@ -14,6 +14,9 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from neutron_lib.callbacks import events
+from neutron_lib.callbacks import registry
+from neutron_lib.callbacks import resources
 from neutron_lib import constants
 from neutron_lib import exceptions as n_exc
 from neutron_lib.plugins import directory
@@ -21,9 +24,6 @@ from oslo_log import log as logging
 
 from neutron._i18n import _, _LE
 from neutron.api.v2 import attributes
-from neutron.callbacks import events
-from neutron.callbacks import registry
-from neutron.callbacks import resources
 from neutron.common import exceptions as c_exc
 from neutron.db import _resource_extend as resource_extend
 from neutron.db import _utils as db_utils

neutron/services/l3_router/service_providers/driver_controller.py

@@ -12,6 +12,9 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from neutron_lib.callbacks import events
+from neutron_lib.callbacks import registry
+from neutron_lib.callbacks import resources
 from neutron_lib import constants as lib_const
 from neutron_lib import exceptions as lib_exc
 from neutron_lib.plugins import directory
@@ -19,9 +22,6 @@ from oslo_config import cfg
 from oslo_log import log as logging
 
 from neutron._i18n import _
-from neutron.callbacks import events
-from neutron.callbacks import registry
-from neutron.callbacks import resources
 from neutron.db import servicetype_db as st_db
 from neutron.plugins.common import constants
 from neutron.services import provider_configuration

neutron/services/qos/drivers/base.py

@@ -15,10 +15,10 @@
 # under the License.
 
 from neutron_lib.api import validators as lib_validators
+from neutron_lib.callbacks import events
+from neutron_lib.callbacks import registry
 from oslo_log import log as logging
 
-from neutron.callbacks import events
-from neutron.callbacks import registry
 from neutron.services.qos import qos_consts
 
 LOG = logging.getLogger(__name__)

neutron/services/qos/drivers/manager.py

@@ -11,6 +11,8 @@
 #    under the License.
 
 from neutron_lib.api.definitions import portbindings
+from neutron_lib.callbacks import events
+from neutron_lib.callbacks import registry
 from oslo_log import log as logging
 from oslo_utils import excutils
 
@@ -19,8 +21,6 @@ from neutron.api.rpc.callbacks import events as rpc_events
 from neutron.api.rpc.callbacks.producer import registry as rpc_registry
 from neutron.api.rpc.callbacks import resources
 from neutron.api.rpc.handlers import resources_rpc
-from neutron.callbacks import events
-from neutron.callbacks import registry
 from neutron.objects.qos import policy as policy_object
 from neutron.services.qos import qos_consts
 

neutron/services/qos/qos_plugin.py

@@ -13,9 +13,10 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from neutron.callbacks import events as callbacks_events
-from neutron.callbacks import registry as callbacks_registry
-from neutron.callbacks import resources as callbacks_resources
+from neutron_lib.callbacks import events as callbacks_events
+from neutron_lib.callbacks import registry as callbacks_registry
+from neutron_lib.callbacks import resources as callbacks_resources
+
 from neutron.common import exceptions as n_exc
 from neutron.db import api as db_api
 from neutron.db import db_base_plugin_common

neutron/services/segments/db.py

@@ -14,7 +14,9 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-
+from neutron_lib.callbacks import events
+from neutron_lib.callbacks import registry
+from neutron_lib.callbacks import resources
 from neutron_lib import constants
 from neutron_lib import exceptions as n_exc
 from neutron_lib.plugins import directory
@@ -22,9 +24,6 @@ from oslo_db import exception as db_exc
 from oslo_log import helpers as log_helpers
 from oslo_utils import uuidutils
 
-from neutron.callbacks import events
-from neutron.callbacks import registry
-from neutron.callbacks import resources
 from neutron.db import _utils as db_utils
 from neutron.db import api as db_api
 from neutron.db import common_db_mixin

neutron/services/segments/plugin.py

@@ -16,6 +16,9 @@
 
 from keystoneauth1 import loading as ks_loading
 import netaddr
+from neutron_lib.callbacks import events
+from neutron_lib.callbacks import registry
+from neutron_lib.callbacks import resources
 from neutron_lib import constants
 from neutron_lib.plugins import directory
 from novaclient import client as nova_client
@@ -25,9 +28,6 @@ from oslo_log import log
 
 from neutron._i18n import _, _LE, _LI
 from neutron.api.v2 import attributes
-from neutron.callbacks import events
-from neutron.callbacks import registry
-from neutron.callbacks import resources
 from neutron.common import exceptions as n_exc
 from neutron.db import _resource_extend as resource_extend
 from neutron.db import api as db_api

neutron/services/trunk/drivers/base.py

@@ -15,8 +15,9 @@
 
 import abc
 
-from neutron.callbacks import events
-from neutron.callbacks import registry
+from neutron_lib.callbacks import events
+from neutron_lib.callbacks import registry
+
 from neutron.services.trunk import constants as trunk_consts
 from neutron.services.trunk.rpc import backend
 
@@ -75,7 +76,7 @@ class DriverBase(object):
         register() method invocation.
 
         :param resource: neutron.services.trunk.constants.TRUNK_PLUGIN
-        :param event: neutron.callbacks.events.AFTER_INIT
+        :param event: neutron_lib.callbacks.events.AFTER_INIT
         :param trigger: neutron.service.trunks.plugin.TrunkPlugin
         """
 

neutron/services/trunk/drivers/linuxbridge/agent/driver.py

@@ -11,15 +11,15 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from neutron_lib.callbacks import events as local_events
+from neutron_lib.callbacks import registry
+from neutron_lib.callbacks import resources as local_resources
 from oslo_log import log as logging
 import oslo_messaging
 
 from neutron._i18n import _LE
 from neutron.api.rpc.callbacks import events
 from neutron.api.rpc.handlers import resources_rpc
-from neutron.callbacks import events as local_events
-from neutron.callbacks import registry
-from neutron.callbacks import resources as local_resources
 from neutron.services.trunk import constants as t_const
 from neutron.services.trunk.drivers.linuxbridge.agent import trunk_plumber
 from neutron.services.trunk.rpc import agent as trunk_rpc

neutron/services/trunk/drivers/openvswitch/agent/ovsdb_handler.py

@@ -16,6 +16,8 @@
 import functools
 
 import eventlet
+from neutron_lib.callbacks import events
+from neutron_lib.callbacks import registry
 from neutron_lib import context as n_context
 from oslo_concurrency import lockutils
 from oslo_context import context as o_context
@@ -26,8 +28,6 @@ from oslo_serialization import jsonutils
 from neutron._i18n import _, _LE
 from neutron.agent.common import ovs_lib
 from neutron.api.rpc.handlers import resources_rpc
-from neutron.callbacks import events
-from neutron.callbacks import registry
 from neutron.common import utils as common_utils
 from neutron.plugins.ml2.drivers.openvswitch.agent.common \
     import constants as ovs_agent_constants

neutron/services/trunk/drivers/openvswitch/driver.py

@@ -12,12 +12,12 @@
 # under the License.
 
 from neutron_lib.api.definitions import portbindings
+from neutron_lib.callbacks import events
+from neutron_lib.callbacks import registry
 from neutron_lib import constants
 from oslo_config import cfg
 from oslo_log import log as logging
 
-from neutron.callbacks import events
-from neutron.callbacks import registry
 from neutron.plugins.ml2.drivers.openvswitch.agent.common import (
     constants as agent_consts)
 from neutron.services.trunk import constants as trunk_consts

neutron/services/trunk/plugin.py

@@ -15,6 +15,9 @@
 import copy
 
 from neutron_lib.api.definitions import portbindings
+from neutron_lib.callbacks import events
+from neutron_lib.callbacks import registry
+from neutron_lib.callbacks import resources
 from neutron_lib import context
 from neutron_lib.plugins import directory
 from neutron_lib.services import base as service_base
@@ -22,9 +25,6 @@ from oslo_log import log as logging
 from oslo_utils import uuidutils
 
 from neutron.api.v2 import attributes
-from neutron.callbacks import events
-from neutron.callbacks import registry
-from neutron.callbacks import resources
 from neutron.db import _resource_extend as resource_extend
 from neutron.db import api as db_api
 from neutron.db import common_db_mixin

neutron/services/trunk/rpc/backend.py

@@ -12,10 +12,10 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
+from neutron_lib.callbacks import events
+from neutron_lib.callbacks import registry
 from oslo_log import log as logging
 
-from neutron.callbacks import events
-from neutron.callbacks import registry
 from neutron.services.trunk import constants as trunk_consts
 from neutron.services.trunk.rpc import server
 

neutron/tests/base.py

@@ -26,6 +26,7 @@ import os.path
 import eventlet.timeout
 import fixtures
 import mock
+from neutron_lib.callbacks import manager as registry_manager
 from neutron_lib import fixture
 from oslo_concurrency.fixture import lockutils
 from oslo_config import cfg
@@ -42,7 +43,6 @@ from neutron._i18n import _
 from neutron.agent.linux import external_process
 from neutron.api.rpc.callbacks.consumer import registry as rpc_consumer_reg
 from neutron.api.rpc.callbacks.producer import registry as rpc_producer_reg
-from neutron.callbacks import manager as registry_manager
 from neutron.common import config
 from neutron.common import rpc as n_rpc
 from neutron.db import _model_query as model_query

neutron/tests/functional/agent/l3/test_legacy_router.py

@@ -16,14 +16,14 @@
 import copy
 
 import mock
+from neutron_lib.callbacks import events
+from neutron_lib.callbacks import registry
+from neutron_lib.callbacks import resources
 from neutron_lib import constants as lib_constants
 
 from neutron.agent.l3 import namespace_manager
 from neutron.agent.l3 import namespaces
 from neutron.agent.linux import ip_lib
-from neutron.callbacks import events
-from neutron.callbacks import registry
-from neutron.callbacks import resources
 from neutron.common import utils
 from neutron.tests.common import machine_fixtures
 from neutron.tests.common import net_helpers

neutron/tests/functional/agent/test_l2_ovs_agent.py

@@ -17,9 +17,10 @@
 import mock
 import time
 
-from neutron.callbacks import events
-from neutron.callbacks import registry
-from neutron.callbacks import resources
+from neutron_lib.callbacks import events
+from neutron_lib.callbacks import registry
+from neutron_lib.callbacks import resources
+
 from neutron.common import utils
 from neutron.plugins.ml2.drivers.openvswitch.agent.common import constants
 from neutron.tests.common import net_helpers

neutron/tests/functional/pecan_wsgi/test_hooks.py

@@ -14,6 +14,7 @@
 #    under the License.
 
 import mock
+from neutron_lib.callbacks import events
 from neutron_lib import context
 from neutron_lib.db import constants as db_const
 from neutron_lib.plugins import directory
@@ -21,7 +22,6 @@ from oslo_policy import policy as oslo_policy
 from oslo_serialization import jsonutils
 
 from neutron.api.v2 import attributes
-from neutron.callbacks import events
 from neutron.db.quota import driver as quota_driver
 from neutron import manager
 from neutron.pecan_wsgi.controllers import resource

neutron/tests/functional/services/l3_router/test_l3_dvr_router_plugin.py

@@ -14,13 +14,14 @@
 
 import mock
 from neutron_lib.api.definitions import portbindings
+from neutron_lib.callbacks import events
+from neutron_lib.callbacks import registry
+from neutron_lib.callbacks import resources
+
 from neutron_lib import constants
 from neutron_lib import context
 
 from neutron.api.rpc.handlers import l3_rpc
-from neutron.callbacks import events
-from neutron.callbacks import registry
-from neutron.callbacks import resources
 from neutron.common import constants as n_const
 from neutron.common import topics
 from neutron.extensions import external_net

neutron/tests/unit/api/rpc/agentnotifiers/test_dhcp_rpc_agent_api.py

@@ -16,13 +16,13 @@
 import datetime
 import mock
 
+from neutron_lib.callbacks import events
+from neutron_lib.callbacks import registry
+from neutron_lib.callbacks import resources
 from neutron_lib.plugins import directory
 from oslo_utils import timeutils
 
 from neutron.api.rpc.agentnotifiers import dhcp_rpc_agent_api
-from neutron.callbacks import events
-from neutron.callbacks import registry
-from neutron.callbacks import resources
 from neutron.common import utils
 from neutron.db.agentschedulers_db import cfg
 from neutron.db.models import agent as agent_model

neutron/tests/unit/api/rpc/callbacks/test_resource_manager.py

@@ -12,9 +12,10 @@
 
 import mock
 
+from neutron_lib.callbacks import exceptions
+
 from neutron.api.rpc.callbacks import exceptions as rpc_exc
 from neutron.api.rpc.callbacks import resource_manager
-from neutron.callbacks import exceptions as exceptions
 from neutron.tests.unit.services.qos import base
 
 IS_VALID_RESOURCE_TYPE = (

neutron/tests/unit/api/rpc/handlers/test_dhcp_rpc.py

@@ -15,13 +15,13 @@
 
 import mock
 from neutron_lib.api.definitions import portbindings
+from neutron_lib.callbacks import resources
 from neutron_lib import constants
 from neutron_lib import exceptions as n_exc
 from neutron_lib.plugins import directory
 from oslo_db import exception as db_exc
 
 from neutron.api.rpc.handlers import dhcp_rpc
-from neutron.callbacks import resources
 from neutron.common import constants as n_const
 from neutron.common import exceptions
 from neutron.common import utils

neutron/tests/unit/api/v2/test_base.py

@@ -17,6 +17,7 @@ import os
 
 import mock
 from neutron_lib.api import converters
+from neutron_lib.callbacks import registry
 from neutron_lib import constants
 from neutron_lib import context
 from neutron_lib import exceptions as n_exc
@@ -36,7 +37,6 @@ from neutron.api import extensions
 from neutron.api.v2 import attributes
 from neutron.api.v2 import base as v2_base
 from neutron.api.v2 import router
-from neutron.callbacks import registry
 from neutron import policy
 from neutron import quota
 from neutron.quota import resource_registry

neutron/tests/unit/db/test_db_base_plugin_v2.py

@@ -21,6 +21,8 @@ import itertools
 import eventlet
 import mock
 import netaddr
+from neutron_lib.callbacks import exceptions
+from neutron_lib.callbacks import registry
 from neutron_lib import constants
 from neutron_lib import context
 from neutron_lib import exceptions as lib_exc
@@ -41,8 +43,6 @@ import neutron
 from neutron.api import api_common
 from neutron.api import extensions
 from neutron.api.v2 import router
-from neutron.callbacks import exceptions
-from neutron.callbacks import registry
 from neutron.common import constants as n_const
 from neutron.common import exceptions as n_exc
 from neutron.common import ipv6_utils

neutron/tests/unit/db/test_dvr_mac_db.py

@@ -15,13 +15,13 @@