417ad2ed25
OpenStack datasource drivers support lazy_tables flag. Implements blueprint: selectable-translator Change-Id: I0f4dfb386243d99423e63e2fcad2eb64b8ae5498
167 lines
6.4 KiB
Python
167 lines
6.4 KiB
Python
# Copyright (c) 2015 Cisco.
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#
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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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#
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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, 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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# under the License.
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#
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import datetime
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import keystoneclient.v3.client as ksclient
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from monascaclient import client as monasca_client
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from oslo_log import log as logging
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from oslo_utils import timeutils
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from congress.datasources import constants
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from congress.datasources import datasource_driver
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from congress.datasources import datasource_utils as ds_utils
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LOG = logging.getLogger(__name__)
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# TODO(thinrichs): figure out how to move even more of this boilerplate
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# into DataSourceDriver. E.g. change all the classes to Driver instead of
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# NeutronDriver, CeilometerDriver, etc. and move the d6instantiate function
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# to DataSourceDriver.
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class MonascaDriver(datasource_driver.PollingDataSourceDriver,
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datasource_driver.ExecutionDriver):
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METRICS = "metrics"
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DIMENSIONS = "dimensions"
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STATISTICS = "statistics"
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DATA = "statistics.data"
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# TODO(fabiog): add events and logs when fully supported in Monasca
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# EVENTS = "events"
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# LOGS = "logs"
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value_trans = {'translation-type': 'VALUE'}
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metric_translator = {
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'translation-type': 'HDICT',
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'table-name': METRICS,
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'selector-type': 'DICT_SELECTOR',
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'field-translators':
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({'fieldname': 'id', 'translator': value_trans},
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{'fieldname': 'name', 'translator': value_trans},
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{'fieldname': 'dimensions',
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'translator': {'translation-type': 'VDICT',
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'table-name': DIMENSIONS,
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'id-col': 'id',
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'key-col': 'key', 'val-col': 'value',
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'translator': value_trans}})
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}
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statistics_translator = {
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'translation-type': 'HDICT',
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'table-name': STATISTICS,
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'selector-type': 'DICT_SELECTOR',
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'field-translators':
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({'fieldname': 'name', 'translator': value_trans},
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{'fieldname': 'statistics',
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'translator': {'translation-type': 'LIST',
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'table-name': DATA,
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'id-col': 'name',
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'val-col': 'value_col',
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'translator': value_trans}})
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}
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TRANSLATORS = [metric_translator, statistics_translator]
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def __init__(self, name='', args=None):
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super(MonascaDriver, self).__init__(name, args=args)
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datasource_driver.ExecutionDriver.__init__(self)
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self.creds = args
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if not self.creds.get('project_name'):
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self.creds['project_name'] = self.creds['tenant_name']
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if not self.creds.get('poll_time'):
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# set default polling time to 1hr
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self.creds['poll_time'] = 3600
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# Monasca uses Keystone V3
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self.creds['auth_url'] = self.creds['auth_url'].replace("v2.0", "v3")
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self.keystone = ksclient.Client(**self.creds)
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self.creds['token'] = self.keystone.auth_token
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if not self.creds.get('endpoint'):
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# if the endpoint not defined retrieved it from keystone catalog
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self.creds['endpoint'] = self.keystone.service_catalog.url_for(
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service_type='monitoring', endpoint_type='publicURL')
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self.monasca = monasca_client.Client('2_0', **self.creds)
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self.add_executable_client_methods(self.monasca, 'monascaclient.')
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self.initialize_update_methods()
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self._init_end_start_poll()
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@staticmethod
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def get_datasource_info():
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result = {}
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result['id'] = 'monasca'
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result['description'] = ('Datasource driver that interfaces with '
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'monasca.')
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result['config'] = ds_utils.get_openstack_required_config()
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result['config']['lazy_tables'] = constants.OPTIONAL
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result['secret'] = ['password']
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return result
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def initialize_update_methods(self):
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metrics_method = lambda: self._translate_metric(
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self.monasca.metrics.list())
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self.add_update_method(metrics_method, self.metric_translator)
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statistics_method = self.update_statistics
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self.add_update_method(statistics_method, self.statistics_translator)
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def update_statistics(self):
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today = datetime.datetime.now()
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yesterday = datetime.timedelta(hours=24)
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start_from = timeutils.isotime(today-yesterday)
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for metric in self.monasca.metrics.list_names():
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LOG.debug("Monasca statistics for metric %s", metric['name'])
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_query_args = dict(
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start_time=start_from,
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name=metric['name'],
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statistics='avg',
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period=int(self.creds['poll_time']),
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merge_metrics='true')
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statistics = self.monasca.metrics.list_statistics(
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**_query_args)
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self._translate_statistics(statistics)
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@ds_utils.update_state_on_changed(METRICS)
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def _translate_metric(self, obj):
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"""Translate the metrics represented by OBJ into tables."""
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LOG.debug("METRIC: %s", str(obj))
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row_data = MonascaDriver.convert_objs(obj,
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self.metric_translator)
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return row_data
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@ds_utils.update_state_on_changed(STATISTICS)
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def _translate_statistics(self, obj):
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"""Translate the metrics represented by OBJ into tables."""
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LOG.debug("STATISTICS: %s", str(obj))
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row_data = MonascaDriver.convert_objs(obj,
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self.statistics_translator)
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return row_data
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def execute(self, action, action_args):
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"""Overwrite ExecutionDriver.execute()."""
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# action can be written as a method or an API call.
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func = getattr(self, action, None)
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if func and self.is_executable(func):
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func(action_args)
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else:
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self._execute_api(self.monasca, action, action_args)
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