c39e2077e3
sensors -j give JSON output, which is much easier to parse than raw output. Use this, together with the "path" parameter, to allow robust reading of sensor values. fixes #308
107 lines
4.2 KiB
Python
107 lines
4.2 KiB
Python
# -*- coding: UTF-8 -*-
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# pylint: disable=C0111,R0903
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"""Displays sensor temperature
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Parameters:
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* sensors.path: path to temperature file (default /sys/class/thermal/thermal_zone0/temp).
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* sensors.json: if set to "true", interpret sensors.path as JSON "path" in the output
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of "sensors -j" (i.e. <key1>/<key2>/.../<value>), for example, path could
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be: "coretemp-isa-00000/Core 0/temp1_input" (defaults to "false")
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* sensors.match: (fallback) Line to match against output of 'sensors -u' (default: temp1_input)
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* sensors.match_number: (fallback) which of the matches you want (default -1: last match).
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"""
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import re
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import json
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import logging
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import bumblebee.util
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import bumblebee.input
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import bumblebee.output
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import bumblebee.engine
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log = logging.getLogger(__name__)
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class Module(bumblebee.engine.Module):
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def __init__(self, engine, config):
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super(Module, self).__init__(engine, config,
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bumblebee.output.Widget(full_text=self.temperature))
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self._temperature = "unknown"
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self._mhz = "n/a"
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self._match_number = int(self.parameter("match_number", "-1"))
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self._pattern = re.compile(r"^\s*{}:\s*([\d.]+)$".format(self.parameter("match", "temp1_input")), re.MULTILINE)
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self._json = bumblebee.util.asbool(self.parameter("json", "false"))
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engine.input.register_callback(self, button=bumblebee.input.LEFT_MOUSE, cmd="xsensors")
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self.determine_method()
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def determine_method(self):
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if self.parameter("path") != None and self._json == False:
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self.use_sensors = False # use thermal zone
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else:
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# try to use output of sensors -u
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try:
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output = bumblebee.util.execute("sensors -u")
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self.use_sensors = True
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log.debug("Sensors command available")
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except FileNotFoundError as e:
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log.info("Sensors command not available, using /sys/class/thermal/thermal_zone*/")
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self.use_sensors = False
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def _get_temp_from_sensors(self):
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if self._json == True:
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try:
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output = json.loads(bumblebee.util.execute("sensors -j"))
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for key in self.parameter("path").split("/"):
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output = output[key]
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return int(float(output))
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except Exception as e:
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logging.error("unable to read sensors: {}".format(str(e)))
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return "unknown"
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else:
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output = bumblebee.util.execute("sensors -u")
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match = self._pattern.findall(output)
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if match:
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return int(float(match[self._match_number]))
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return "unknown"
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def get_temp(self):
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if self.use_sensors:
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temperature = self._get_temp_from_sensors()
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log.debug("Retrieve temperature from sensors -u")
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else:
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try:
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temperature = open(self.parameter("path", "/sys/class/thermal/thermal_zone0/temp")).read()[:2]
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log.debug("retrieved temperature from /sys/class/")
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# TODO: Iterate through all thermal zones to determine the correct one and use its value
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# https://unix.stackexchange.com/questions/304845/discrepancy-between-number-of-cores-and-thermal-zones-in-sys-class-thermal
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except IOError:
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temperature = "unknown"
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log.info("Can not determine temperature, please install lm-sensors")
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return temperature
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def get_mhz(self):
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try:
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output = open("/sys/devices/system/cpu/cpufreq/policy0/scaling_cur_freq").read()
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mhz = int(float(output)/1000.0)
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except:
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output = open("/proc/cpuinfo").read()
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m = re.search(r"cpu MHz\s+:\s+(\d+)", output)
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mhz = int(m.group(1))
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if mhz < 1000:
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return "{} MHz".format(mhz)
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else:
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return "{:0.01f} GHz".format(float(mhz)/1000.0)
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def temperature(self, _):
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return u"{}°c @ {}".format(self._temperature, self._mhz)
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def update(self, widgets):
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self._temperature = self.get_temp()
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self._mhz = self.get_mhz()
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# vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4
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