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# -*- coding: utf-8 -*- |
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# |
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# This file is part of Glances. |
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# |
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# Copyright (C) 2015 Nicolargo <[email protected]> |
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# |
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# Glances is free software; you can redistribute it and/or modify |
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# it under the terms of the GNU Lesser General Public License as published by |
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# the Free Software Foundation, either version 3 of the License, or |
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# (at your option) any later version. |
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# |
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# Glances is distributed in the hope that it will be useful, |
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# but WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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# GNU Lesser General Public License for more details. |
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# |
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# You should have received a copy of the GNU Lesser General Public License |
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# along with this program. If not, see <http://www.gnu.org/licenses/>. |
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"""InfluxDB interface class.""" |
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import sys |
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from glances.compat import NoOptionError, NoSectionError |
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from glances.logger import logger |
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from glances.exports.glances_export import GlancesExport |
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from influxdb import InfluxDBClient |
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from influxdb.client import InfluxDBClientError |
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from influxdb.influxdb08 import InfluxDBClient as InfluxDBClient08 |
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from influxdb.influxdb08.client import InfluxDBClientError as InfluxDBClientError08 |
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# Constants for tracking specific behavior |
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INFLUXDB_08 = '0.8' |
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INFLUXDB_09PLUS = '0.9+' |
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class Export(GlancesExport): |
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"""This class manages the InfluxDB export module.""" |
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def __init__(self, config=None, args=None): |
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"""Init the InfluxDB export IF.""" |
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super(Export, self).__init__(config=config, args=args) |
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# Load the InfluxDB configuration file |
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self.host = None |
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self.port = None |
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self.user = None |
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self.password = None |
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self.db = None |
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self.prefix = None |
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self.tags = None |
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self.export_enable = self.load_conf() |
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if not self.export_enable: |
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sys.exit(2) |
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# Init the InfluxDB client |
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self.client = self.init() |
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def load_conf(self, section="influxdb"): |
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"""Load the InfluxDb configuration in the Glances configuration file.""" |
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if self.config is None: |
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return False |
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try: |
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self.host = self.config.get_value(section, 'host') |
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self.port = self.config.get_value(section, 'port') |
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self.user = self.config.get_value(section, 'user') |
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self.password = self.config.get_value(section, 'password') |
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self.db = self.config.get_value(section, 'db') |
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except NoSectionError: |
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logger.critical("No InfluxDB configuration found") |
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return False |
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except NoOptionError as e: |
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logger.critical("Error in the InfluxDB configuration (%s)" % e) |
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return False |
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else: |
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logger.debug("Load InfluxDB from the Glances configuration file") |
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# Prefix is optional |
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try: |
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self.prefix = self.config.get_value(section, 'prefix') |
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except NoOptionError: |
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pass |
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# Tags are optional, comma separated key:value pairs. |
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try: |
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self.tags = self.config.get_value(section, 'tags') |
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except NoOptionError: |
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pass |
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return True |
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def init(self): |
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"""Init the connection to the InfluxDB server.""" |
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if not self.export_enable: |
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return None |
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try: |
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db = InfluxDBClient(host=self.host, |
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port=self.port, |
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username=self.user, |
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password=self.password, |
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database=self.db) |
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get_all_db = [i['name'] for i in db.get_list_database()] |
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self.version = INFLUXDB_09PLUS |
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except InfluxDBClientError: |
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# https://github.com/influxdb/influxdb-python/issues/138 |
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logger.info("Trying fallback to InfluxDB v0.8") |
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db = InfluxDBClient08(host=self.host, |
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port=self.port, |
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username=self.user, |
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password=self.password, |
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database=self.db) |
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get_all_db = [i['name'] for i in db.get_list_database()] |
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self.version = INFLUXDB_08 |
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except InfluxDBClientError08 as e: |
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logger.critical("Cannot connect to InfluxDB database '%s' (%s)" % (self.db, e)) |
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sys.exit(2) |
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if self.db in get_all_db: |
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logger.info( |
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"Stats will be exported to InfluxDB server: {0}".format(db._baseurl)) |
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else: |
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logger.critical("InfluxDB database '%s' did not exist. Please create it" % self.db) |
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sys.exit(2) |
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return db |
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def export(self, name, columns, points): |
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"""Write the points to the InfluxDB server.""" |
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logger.debug("Export {0} stats to InfluxDB".format(name)) |
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# Manage prefix |
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if self.prefix is not None: |
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name = self.prefix + '.' + name |
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# Create DB input |
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if self.version == INFLUXDB_08: |
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data = [{'name': name, 'columns': columns, 'points': [points]}] |
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else: |
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# Convert all int to float (mandatory for InfluxDB>0.9.2) |
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# Correct issue#750 and issue#749 |
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for i, _ in enumerate(points): |
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try: |
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points[i] = float(points[i]) |
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except (TypeError, ValueError) as e: |
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logger.debug("InfluxDB error diring stat convertion %s=%s (%s)" % (columns[i], points[i], e)) |
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data = [{'measurement': name, |
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'tags': self.parse_tags(self.tags), |
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'fields': dict(zip(columns, points))}] |
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# Write input to the InfluxDB database |
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try: |
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self.client.write_points(data) |
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except Exception as e: |
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logger.error("Cannot export {0} stats to InfluxDB ({1})".format(name, e)) |
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nicolargo /
glances
