49 lines
1.4 KiB
Python
49 lines
1.4 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.callbacks import manager
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# TODO(armax): consider adding locking
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CALLBACK_MANAGER = None
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def _get_callback_manager():
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global CALLBACK_MANAGER
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if CALLBACK_MANAGER is None:
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CALLBACK_MANAGER = manager.CallbacksManager()
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return CALLBACK_MANAGER
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def subscribe(callback, resource, event):
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_get_callback_manager().subscribe(callback, resource, event)
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def unsubscribe(callback, resource, event):
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_get_callback_manager().unsubscribe(callback, resource, event)
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def unsubscribe_by_resource(callback, resource):
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_get_callback_manager().unsubscribe_by_resource(callback, resource)
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def unsubscribe_all(callback):
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_get_callback_manager().unsubscribe_all(callback)
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def notify(resource, event, trigger, **kwargs):
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_get_callback_manager().notify(resource, event, trigger, **kwargs)
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def clear():
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_get_callback_manager().clear()
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