77 lines
3.4 KiB
Python
77 lines
3.4 KiB
Python
# (C) Copyright 2016-2017 Hewlett Packard Enterprise Development LP
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#
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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 abc
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import influxdb
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from oslo_config import cfg
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from monasca_persister.repositories import abstract_repository
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from monasca_persister.repositories import data_points
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DATABASE_NOT_FOUND_MSG = "database not found"
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class AbstractInfluxdbRepository(abstract_repository.AbstractRepository, metaclass=abc.ABCMeta):
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def __init__(self):
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super(AbstractInfluxdbRepository, self).__init__()
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self.conf = cfg.CONF
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self._influxdb_client = influxdb.InfluxDBClient(
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self.conf.influxdb.ip_address,
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self.conf.influxdb.port,
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self.conf.influxdb.user,
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self.conf.influxdb.password)
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if self.conf.influxdb.db_per_tenant:
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self.data_points_class = data_points.DataPointsAsDict
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else:
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self.data_points_class = data_points.DataPointsAsList
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def write_batch(self, data_points):
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if self.conf.influxdb.db_per_tenant:
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for tenant_id, tenant_data_points in data_points.items():
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database = '%s_%s' % (self.conf.influxdb.database_name,
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tenant_id)
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self._write_batch(tenant_data_points, database)
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else:
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self._write_batch(data_points, self.conf.influxdb.database_name)
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def _write_batch(self, data_points, database):
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# NOTE (brtknr): Loop twice to ensure database is created if missing.
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for retry in range(2):
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try:
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batch_size = self.conf.influxdb.batch_size
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self._influxdb_client.write_points(data_points, 'ms',
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protocol='line',
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database=database,
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batch_size=batch_size)
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break
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except influxdb.exceptions.InfluxDBClientError as ex:
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# When a databse is not found, the returned exception resolves
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# to: {"error":"database not found: \"test\""}
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if DATABASE_NOT_FOUND_MSG in str(ex):
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self._influxdb_client.create_database(database)
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# NOTE (brtknr): Only apply default retention policy at
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# database creation time so that existing policies are
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# not overridden since administrators may want different
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# retention policy per tenant.
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hours = self.conf.influxdb.default_retention_hours
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if hours > 0:
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rp = '{}h'.format(hours)
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default_rp = dict(database=database, default=True,
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name=rp, duration=rp,
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replication='1')
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self._influxdb_client.create_retention_policy(**default_rp)
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else:
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raise
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