Add IPMI driver.
Change-Id: Ic3b9aac6aa0184949b4bf85644d8e6c07ef3df1f
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kwapi/drivers/ipmi.py
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59
kwapi/drivers/ipmi.py
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# -*- coding: utf-8 -*-
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#
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# Author: François Rossigneux <francois.rossigneux@inria.fr>
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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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import subprocess
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import time
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from driver import Driver
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class Ipmi(Driver):
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"""Driver for IPMI cards."""
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def __init__(self, probe_ids, **kwargs):
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"""Initializes the IPMI driver.
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Keyword arguments:
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probe_ids -- list containing the probes IDs
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(a wattmeter monitor sometimes several probes)
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kwargs -- keyword (device) defining the device to read (/dev/ttyUSB0)
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"""
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Driver.__init__(self, probe_ids, kwargs)
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def run(self):
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"""Starts the driver thread."""
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while not self.stop_request_pending():
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measurements = {}
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measurements['w'] = self.get_watts()
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self.send_measurements(self.probe_ids[0], measurements)
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time.sleep(1)
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def get_watts(self):
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"""Returns the power consumption."""
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command = 'ipmitool '
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command += '-S ' + kwargs.get('cache_file') + ' '
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command += '-I ' + kwargs.get('interface') + ' '
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command += '-H ' + kwargs.get('host') + ' '
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command += '-U ' + kwargs.get('username', 'root') + ' '
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command += '-P ' + kwargs.get('password') + ' '
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command += 'sensor reading "System Level" | cut -f2 -d"|"'
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output, error = subprocess.Popen(command,
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shell=True,
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stdout=subprocess.PIPE,
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stderr=subprocess.STDOUT
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).communicate()
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return int(output)
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