79 lines
2.4 KiB
Python
79 lines
2.4 KiB
Python
#
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# Copyright 2012 New Dream Network, LLC (DreamHost)
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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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import threading
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from oslo_config import cfg
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from pecan import hooks
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from ceilometer import pipeline
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class ConfigHook(hooks.PecanHook):
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"""Attach the configuration object to the request.
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That allows controllers to get it.
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"""
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@staticmethod
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def before(state):
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state.request.cfg = cfg.CONF
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class DBHook(hooks.PecanHook):
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def __init__(self, conn, event_conn, alarm_conn):
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self.storage_connection = conn
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self.event_storage_connection = event_conn
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self.alarm_storage_connection = alarm_conn
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def before(self, state):
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state.request.storage_conn = self.storage_connection
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state.request.event_storage_conn = self.event_storage_connection
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state.request.alarm_storage_conn = self.alarm_storage_connection
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class PipelineHook(hooks.PecanHook):
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"""Create and attach a pipeline to the request.
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That allows new samples to be posted via the /v2/meters/ API.
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"""
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def __init__(self):
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# this is done here as the cfg options are not available
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# when the file is imported.
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self.pipeline_manager = pipeline.setup_pipeline()
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def before(self, state):
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state.request.pipeline_manager = self.pipeline_manager
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class TranslationHook(hooks.PecanHook):
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def __init__(self):
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# Use thread local storage to make this thread safe in situations
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# where one pecan instance is being used to serve multiple request
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# threads.
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self.local_error = threading.local()
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self.local_error.translatable_error = None
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def before(self, state):
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self.local_error.translatable_error = None
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def after(self, state):
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if hasattr(state.response, 'translatable_error'):
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self.local_error.translatable_error = (
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state.response.translatable_error)
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