47 lines
1.6 KiB
Python
47 lines
1.6 KiB
Python
# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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from neutron.api.rpc.callbacks import resource_manager
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#TODO(ajo): consider adding locking to _get_manager, it's
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# safe for eventlet, but not for normal threading.
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def _get_manager():
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return resource_manager.ConsumerResourceCallbacksManager()
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def register(callback, resource_type):
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# TODO(kevinbenton): remove this on debt collection
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callback.__dict__['_ACCEPTS_CONTEXT'] = True
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_get_manager().register(callback, resource_type)
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def unsubscribe(callback, resource_type):
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_get_manager().unregister(callback, resource_type)
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def push(context, resource_type, resource_list, event_type):
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"""Push resource list into all registered callbacks for the event type."""
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callbacks = _get_manager().get_callbacks(resource_type)
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for callback in callbacks:
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if callback._ACCEPTS_CONTEXT:
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callback(context, resource_type, resource_list, event_type)
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else:
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# backwards compat for callback listeners that don't take
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# context and resource_type
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callback(resource_list, event_type)
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def clear():
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_get_manager().clear()
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