7497363a02
According to the OpenStack translation policy, available at https://wiki.openstack.org/wiki/LoggingStandards, debug messages should not be translated. Change-Id: Icdf5ea14767d98d2dd4f32bd5b60130a8bca540a Closes-Bug: #1317856
88 lines
3.1 KiB
Python
88 lines
3.1 KiB
Python
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License"); you may
|
|
# not use this file except in compliance with the License. You may obtain
|
|
# a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
|
# License for the specific language governing permissions and limitations
|
|
# under the License.
|
|
|
|
import os
|
|
|
|
import happybase
|
|
from oslo_log import log
|
|
from oslo_utils import netutils
|
|
from six.moves.urllib import parse as urlparse
|
|
|
|
from ceilometer.storage.hbase import inmemory as hbase_inmemory
|
|
|
|
LOG = log.getLogger(__name__)
|
|
|
|
|
|
class Connection(object):
|
|
"""Base connection class for HBase."""
|
|
|
|
_memory_instance = None
|
|
|
|
def __init__(self, url):
|
|
"""Hbase Connection Initialization."""
|
|
opts = self._parse_connection_url(url)
|
|
|
|
if opts['host'] == '__test__':
|
|
url = os.environ.get('CEILOMETER_TEST_HBASE_URL')
|
|
if url:
|
|
# Reparse URL, but from the env variable now
|
|
opts = self._parse_connection_url(url)
|
|
self.conn_pool = self._get_connection_pool(opts)
|
|
else:
|
|
# This is a in-memory usage for unit tests
|
|
if Connection._memory_instance is None:
|
|
LOG.debug('Creating a new in-memory HBase '
|
|
'Connection object')
|
|
Connection._memory_instance = (hbase_inmemory.
|
|
MConnectionPool())
|
|
self.conn_pool = Connection._memory_instance
|
|
else:
|
|
self.conn_pool = self._get_connection_pool(opts)
|
|
|
|
@staticmethod
|
|
def _get_connection_pool(conf):
|
|
"""Return a connection pool to the database.
|
|
|
|
.. note::
|
|
|
|
The tests use a subclass to override this and return an
|
|
in-memory connection pool.
|
|
"""
|
|
LOG.debug('connecting to HBase on %(host)s:%(port)s',
|
|
{'host': conf['host'], 'port': conf['port']})
|
|
return happybase.ConnectionPool(size=100, host=conf['host'],
|
|
port=conf['port'],
|
|
table_prefix=conf['table_prefix'])
|
|
|
|
@staticmethod
|
|
def _parse_connection_url(url):
|
|
"""Parse connection parameters from a database url.
|
|
|
|
.. note::
|
|
|
|
HBase Thrift does not support authentication and there is no
|
|
database name, so we are not looking for these in the url.
|
|
"""
|
|
opts = {}
|
|
result = netutils.urlsplit(url)
|
|
opts['table_prefix'] = urlparse.parse_qs(
|
|
result.query).get('table_prefix', [None])[0]
|
|
opts['dbtype'] = result.scheme
|
|
if ':' in result.netloc:
|
|
opts['host'], port = result.netloc.split(':')
|
|
else:
|
|
opts['host'] = result.netloc
|
|
port = 9090
|
|
opts['port'] = port and int(port) or 9090
|
|
return opts
|