designate/designate/metrics.py

81 lines
2.2 KiB
Python

# Copyright 2016 Hewlett Packard Enterprise Development Company LP
#
# 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.
from oslo_config import cfg
from oslo_log import log as logging
from oslo_utils import importutils
import designate.conf
from designate.metrics_client import noop
monascastatsd = importutils.try_import('monascastatsd')
CFG_GROUP_NAME = 'monasca:statsd'
CONF = designate.conf.CONF
LOG = logging.getLogger(__name__)
# Global metrics client to be imported by other modules
metrics = None
class Metrics(object):
def __init__(self):
self._client = None
def init(self):
conf = cfg.CONF[CFG_GROUP_NAME]
if conf.enabled and monascastatsd:
LOG.info(
'Statsd reports to %(host)s:%(port)d',
{
'host': conf.hostname,
'port': conf.port
}
)
self._client = monascastatsd.Client(
host=conf.hostname, port=conf.port,
dimensions={
'service_name': 'dns'
})
return
if conf.enabled and not monascastatsd:
LOG.error('monasca-statsd client not installed. '
'Metrics will be ignored.')
else:
LOG.info('Statsd disabled')
self._client = noop.Client()
def counter(self, *a, **kw):
return self.client.get_counter(*a, **kw)
def gauge(self, *a, **kw):
return self.client.get_gauge(*a, **kw)
@property
def timing(self):
return self.client.get_timer().timing
def timer(self):
return self.client.get_timer()
@property
def client(self):
if not self._client:
self.init()
return self._client
metrics = Metrics()