130 lines
5.3 KiB
Python
130 lines
5.3 KiB
Python
# Copyright 2015-2017 FUJITSU LIMITED
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# (C) Copyright 2015,2016 Hewlett Packard Enterprise Development LP
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
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# in compliance with the License. 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 distributed under the License
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# is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
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# or implied. See the License for the specific language governing permissions and limitations under
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# the License.
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from oslo_log import log as logging
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import pymysql
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from monasca_notification.common.repositories.base import base_repo
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from monasca_notification.common.repositories import exceptions as exc
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log = logging.getLogger(__name__)
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class MysqlRepo(base_repo.BaseRepo):
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def __init__(self, config):
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super(MysqlRepo, self).__init__(config)
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self._mysql_ssl = config['mysql']['ssl'] or None
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self._mysql_host = config['mysql']['host']
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self._mysql_port = config['mysql']['port']
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self._mysql_user = config['mysql']['user']
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self._mysql_passwd = config['mysql']['passwd']
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self._mysql_dbname = config['mysql']['db']
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self._mysql = None
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def _connect_to_mysql(self):
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self._mysql = None
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try:
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self._mysql = pymysql.connect(host=self._mysql_host,
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port=self._mysql_port,
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user=self._mysql_user,
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passwd=self._mysql_passwd,
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db=self._mysql_dbname,
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ssl=self._mysql_ssl,
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use_unicode=True,
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charset="utf8")
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self._mysql.autocommit(True)
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except pymysql.Error as e:
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log.exception('MySQL connect failed %s', e)
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raise
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def fetch_notifications(self, alarm):
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try:
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if self._mysql is None:
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self._connect_to_mysql()
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cur = self._mysql.cursor()
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cur.execute(self._find_alarm_action_sql, (alarm['alarmDefinitionId'], alarm['newState']))
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for row in cur:
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yield (row[0], row[1].lower(), row[2], row[3], row[4])
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except pymysql.Error as e:
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self._mysql = None
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log.exception("Couldn't fetch alarms actions %s", e)
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raise exc.DatabaseException(e)
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def get_alarm_current_state(self, alarm_id):
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try:
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if self._mysql is None:
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self._connect_to_mysql()
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cur = self._mysql.cursor()
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cur.execute(self._find_alarm_state_sql, alarm_id)
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row = cur.fetchone()
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state = row[0] if row is not None else None
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return state
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except pymysql.Error as e:
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self._mysql = None
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log.exception("Couldn't fetch the current alarm state %s", e)
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raise exc.DatabaseException(e)
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def fetch_notification_method_types(self):
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try:
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if self._mysql is None:
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self._connect_to_mysql()
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cur = self._mysql.cursor()
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cur.execute(self._find_all_notification_types_sql)
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for row in cur:
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yield (row[0])
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except pymysql.Error as e:
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self._mysql = None
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log.exception("Couldn't fetch notification types %s", e)
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raise exc.DatabaseException(e)
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def insert_notification_method_types(self, notification_types):
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try:
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if self._mysql is None:
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self._connect_to_mysql()
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cur = self._mysql.cursor()
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cur.executemany(self._insert_notification_types_sql, notification_types)
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except pymysql.IntegrityError as ignoredException:
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# If multiple instances of the notification engine tries to write the
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# same content at the same time, only one of them will succeed and others will
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# get duplicate primary key, integrity error. We can safely ignore this error.
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# This may happen only during the first start when the tables are empty.
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code, mesg = ignoredException.args
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if code == pymysql.constants.ER.DUP_ENTRY:
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log.debug("Notification type exists in DB. Ignoring the exception {}".format(mesg))
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else:
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raise exc.DatabaseException(ignoredException)
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except pymysql.Error as e:
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self._mysql = None
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log.exception("Couldn't insert notification types %s", e)
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raise exc.DatabaseException(e)
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def get_notification(self, notification_id):
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try:
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if self._mysql is None:
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self._connect_to_mysql()
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cur = self._mysql.cursor()
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cur.execute(self._get_notification_sql, notification_id)
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row = cur.fetchone()
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if row is None:
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return None
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else:
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return [row[0], row[1].lower(), row[2], row[3]]
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except pymysql.Error as e:
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self._mysql = None
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log.exception("Couldn't fetch the notification method %s", e)
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raise exc.DatabaseException(e)
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