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# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2012 OpenStack LLC
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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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# http://www.apache.org/licenses/LICENSE-2.0
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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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from keystone import config
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from keystone import exception
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from keystone import identity
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from keystone import policy
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from keystone import token
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from keystone.common import logging
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from keystone.common import manager
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from keystone.common import wsgi
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LOG = logging.getLogger(__name__)
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class Manager(manager.Manager):
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"""Default pivot point for the Stats backend.
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See :mod:`keystone.common.manager.Manager` for more details on how this
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dynamically calls the backend.
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super(Manager, self).__init__(CONF.stats.driver)
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"""Interface description for a Stats driver."""
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def get_stats(self, api):
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"""Retrieve all previously-captured statistics for an interface."""
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raise exception.NotImplemented()
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def set_stats(self, api, stats_ref):
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"""Update statistics for an interface."""
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raise exception.NotImplemented()
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def increment_stat(self, api, category, value):
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"""Increment the counter for an individual statistic."""
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raise exception.NotImplemented()
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class StatsExtension(wsgi.ExtensionRouter):
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"""Reports on previously-collected request/response statistics."""
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def add_routes(self, mapper):
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stats_controller = StatsController()
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controller=stats_controller,
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conditions=dict(method=['GET']))
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controller=stats_controller,
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conditions=dict(method=['DELETE']))
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class StatsController(wsgi.Application):
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self.identity_api = identity.Manager()
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self.policy_api = policy.Manager()
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self.stats_api = Manager()
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self.token_api = token.Manager()
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super(StatsController, self).__init__()
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def get_stats(self, context):
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self.assert_admin(context)
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'extra': self.stats_api.get_stats(context, 'admin'),
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'extra': self.stats_api.get_stats(context, 'public'),
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def reset_stats(self, context):
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self.assert_admin(context)
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self.stats_api.set_stats(context, 'public', dict())
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self.stats_api.set_stats(context, 'admin', dict())
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class StatsMiddleware(wsgi.Middleware):
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"""Monitors various request/response attribute statistics."""
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request_attributes = ['application_url',
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response_attributes = ['status_int']
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def __init__(self, *args, **kwargs):
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self.stats_api = Manager()
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return super(StatsMiddleware, self).__init__(*args, **kwargs)
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def _resolve_api(self, host):
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if str(CONF.admin_port) in host:
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elif str(CONF.public_port) in host:
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# NOTE(dolph): I don't think this is actually reachable, but hey
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msg = 'Unable to resolve API as either public or admin: %s' % host
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def capture_stats(self, host, obj, attributes):
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"""Collect each attribute from the given object."""
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for attribute in attributes:
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self.stats_api.increment_stat(None,
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self._resolve_api(host),
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getattr(obj, attribute))
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def process_request(self, request):
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"""Monitor incoming request attributes."""
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self.capture_stats(request.host, request, self.request_attributes)
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def process_response(self, request, response):
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"""Monitor outgoing response attributes."""
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self.capture_stats(request.host, response, self.response_attributes)
added
removed
keystone/contrib/stats/core.py
