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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) 2017 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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"""The stats manager.""" |
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import re |
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from glances.stats import GlancesStats |
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from glances.compat import iteritems |
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from glances.logger import logger |
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# SNMP OID regexp pattern to short system name dict |
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oid_to_short_system_name = {'.*Linux.*': 'linux', |
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'.*Darwin.*': 'mac', |
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'.*BSD.*': 'bsd', |
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'.*Windows.*': 'windows', |
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'.*Cisco.*': 'cisco', |
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'.*VMware ESXi.*': 'esxi', |
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'.*NetApp.*': 'netapp'} |
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class GlancesStatsClientSNMP(GlancesStats): |
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"""This class stores, updates and gives stats for the SNMP client.""" |
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def __init__(self, config=None, args=None): |
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super(GlancesStatsClientSNMP, self).__init__() |
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# Init the configuration |
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self.config = config |
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# Init the arguments |
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self.args = args |
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# OS name is used because OID is differents between system |
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self.os_name = None |
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# Load AMPs, plugins and exports modules |
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self.load_modules(self.args) |
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def check_snmp(self): |
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"""Chek if SNMP is available on the server.""" |
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# Import the SNMP client class |
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from glances.snmp import GlancesSNMPClient |
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# Create an instance of the SNMP client |
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clientsnmp = GlancesSNMPClient(host=self.args.client, |
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port=self.args.snmp_port, |
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version=self.args.snmp_version, |
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community=self.args.snmp_community, |
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user=self.args.snmp_user, |
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auth=self.args.snmp_auth) |
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# If we cannot grab the hostname, then exit... |
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ret = clientsnmp.get_by_oid("1.3.6.1.2.1.1.5.0") != {} |
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if ret: |
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# Get the OS name (need to grab the good OID...) |
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oid_os_name = clientsnmp.get_by_oid("1.3.6.1.2.1.1.1.0") |
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try: |
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self.system_name = self.get_system_name(oid_os_name['1.3.6.1.2.1.1.1.0']) |
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logger.info("SNMP system name detected: {}".format(self.system_name)) |
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except KeyError: |
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self.system_name = None |
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logger.warning("Cannot detect SNMP system name") |
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return ret |
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def get_system_name(self, oid_system_name): |
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"""Get the short os name from the OS name OID string.""" |
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short_system_name = None |
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if oid_system_name == '': |
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return short_system_name |
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# Find the short name in the oid_to_short_os_name dict |
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for r, v in iteritems(oid_to_short_system_name): |
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if re.search(r, oid_system_name): |
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short_system_name = v |
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break |
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return short_system_name |
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def update(self): |
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"""Update the stats using SNMP.""" |
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# For each plugins, call the update method |
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for p in self._plugins: |
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if self._plugins[p].is_disable(): |
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# If current plugin is disable |
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# then continue to next plugin |
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continue |
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# Set the input method to SNMP |
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self._plugins[p].input_method = 'snmp' |
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self._plugins[p].short_system_name = self.system_name |
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# Update the stats... |
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try: |
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self._plugins[p].update() |
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except Exception as e: |
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logger.error("Update {} failed: {}".format(p, e)) |
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else: |
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# ... the history |
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self._plugins[p].update_stats_history() |
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# ... and the views |
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self._plugins[p].update_views() |
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nicolargo /
glances
