68 lines
2.2 KiB
Python
68 lines
2.2 KiB
Python
# Copyright 2014 Mirantis Inc.
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# All Rights Reserved.
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#
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# 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 osprofiler.drivers import base
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def _noop_notifier(info, context=None):
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"""Do nothing on notify()."""
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# NOTE(boris-42): By default we are using noop notifier.
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__notifier = _noop_notifier
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__driver_cache = {}
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def notify(info):
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"""Passes the profiling info to the notifier callable.
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:param info: dictionary with profiling information
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"""
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__notifier(info)
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def get():
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"""Returns notifier callable."""
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return __notifier
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def set(notifier):
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"""Service that are going to use profiler should set callable notifier.
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Callable notifier is instance of callable object, that accept exactly
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one argument "info". "info" - is dictionary of values that contains
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profiling information.
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"""
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global __notifier
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__notifier = notifier
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def create(connection_string, *args, **kwargs):
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"""Create notifier based on specified plugin_name
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:param connection_string: connection string which specifies the storage
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driver for notifier
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:param *args: args that will be passed to the driver's __init__ method
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:param **kwargs: kwargs that will be passed to the driver's __init__ method
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:returns: Callable notifier method
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:raises TypeError: In case of invalid name of plugin raises TypeError
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"""
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global __driver_cache
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if connection_string not in __driver_cache:
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__driver_cache[connection_string] = base.get_driver(connection_string,
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*args,
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**kwargs).notify
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return __driver_cache[connection_string]
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