136 lines
5.2 KiB
Python
136 lines
5.2 KiB
Python
# (C) Copyright 2016 Hewlett Packard Enterprise Development LP
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# Copyright 2016 FUJITSU LIMITED
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import monascastatsd
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from oslo_config import cfg
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from oslo_log import log
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from monasca_notification.common.repositories import exceptions
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from monasca_notification.notification import Notification
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LOG = log.getLogger(__name__)
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CONF = cfg.CONF
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NOTIFICATION_DIMENSIONS = {'service': 'monitoring',
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'component': 'monasca-notification'}
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def get_db_repo():
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repo_driver = CONF.database.repo_driver
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LOG.debug('Enabling the %s RDB repository', repo_driver)
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return repo_driver(CONF)
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def construct_notification_object(db_repo, notification_json):
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try:
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notification = Notification(notification_json['id'],
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notification_json['type'],
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notification_json['name'],
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notification_json['address'],
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notification_json['period'],
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notification_json['retry_count'],
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notification_json['raw_alarm'])
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# Grab notification method from database to see if it was changed
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stored_notification = grab_stored_notification_method(db_repo, notification.id)
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# Notification method was deleted
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if stored_notification is None:
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LOG.debug("Notification method {0} was deleted from database. "
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"Will stop sending.".format(notification.id))
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return None
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# Update notification method with most up to date values
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else:
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notification.name = stored_notification[0]
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notification.type = stored_notification[1]
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notification.address = stored_notification[2]
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notification.period = stored_notification[3]
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return notification
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except exceptions.DatabaseException:
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LOG.warn("Error querying mysql for notification method. "
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"Using currently cached method.")
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return notification
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except Exception as e:
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LOG.warn("Error when attempting to construct notification {0}".format(e))
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return None
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def grab_stored_notification_method(db_repo, notification_id):
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try:
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stored_notification = db_repo.get_notification(notification_id)
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except exceptions.DatabaseException:
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LOG.debug('Database Error. Attempting reconnect')
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stored_notification = db_repo.get_notification(notification_id)
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return stored_notification
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def get_statsd_client(dimensions=None):
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local_dims = dimensions.copy() if dimensions else {}
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local_dims.update(NOTIFICATION_DIMENSIONS)
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if CONF.statsd.enable:
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LOG.debug("Establishing connection with statsd on {0}:{1}"
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.format(CONF.statsd.host, CONF.statsd.port))
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client = monascastatsd.Client(name='monasca',
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host=CONF.statsd.host,
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port=CONF.statsd.port,
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dimensions=local_dims)
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else:
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LOG.warn("StatsD monitoring disabled. Overriding monascastatsd.Client to use it offline")
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client = OfflineClient(name='monasca',
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host=CONF.statsd.host,
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port=CONF.statsd.port,
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dimensions=local_dims)
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return client
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class OfflineClient(monascastatsd.Client):
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def _set_connection(self, connection, host, port):
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if connection is None:
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self.connection = OfflineConnection(host=host,
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port=port,
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max_buffer_size=self._max_buffer_size)
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else:
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self.connection = connection
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class OfflineConnection(monascastatsd.Connection):
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def __init__(self, host='localhost', port=8125, max_buffer_size=50):
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"""Initialize an Offline Connection object.
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>>> monascastatsd = MonascaStatsd()
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:name: the name for this client. Everything sent by this client
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will be prefixed by name
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:param host: the host of the MonascaStatsd server.
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:param port: the port of the MonascaStatsd server.
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:param max_buffer_size: Maximum number of metric to buffer before
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sending to the server if sending metrics in batch
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"""
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self.max_buffer_size = max_buffer_size
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self._send = self._send_to_server
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self.connect(host, port)
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self.encoding = 'utf-8'
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def connect(self, host, port):
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"""Avoid connecting to the monascastatsd server.
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"""
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pass
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def _send_to_server(self, packet):
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pass
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