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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 14:31:17 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 14:31:17 +0000 |
commit | 8020f71afd34d7696d7933659df2d763ab05542f (patch) | |
tree | 2fdf1b5447ffd8bdd61e702ca183e814afdcb4fc /collectors/python.d.plugin/w1sensor/w1sensor.chart.py | |
parent | Initial commit. (diff) | |
download | netdata-upstream.tar.xz netdata-upstream.zip |
Adding upstream version 1.37.1.upstream/1.37.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'collectors/python.d.plugin/w1sensor/w1sensor.chart.py')
-rw-r--r-- | collectors/python.d.plugin/w1sensor/w1sensor.chart.py | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/collectors/python.d.plugin/w1sensor/w1sensor.chart.py b/collectors/python.d.plugin/w1sensor/w1sensor.chart.py new file mode 100644 index 0000000..c4f847b --- /dev/null +++ b/collectors/python.d.plugin/w1sensor/w1sensor.chart.py @@ -0,0 +1,97 @@ +# -*- coding: utf-8 -*- +# Description: 1-wire temperature monitor netdata python.d module +# Author: Diomidis Spinellis <http://www.spinellis.gr> +# SPDX-License-Identifier: GPL-3.0-or-later + +import os +import re + +from bases.FrameworkServices.SimpleService import SimpleService + +# default module values (can be overridden per job in `config`) +update_every = 5 + +# Location where 1-Wire devices can be found +W1_DIR = '/sys/bus/w1/devices/' + +# Lines matching the following regular expression contain a temperature value +RE_TEMP = re.compile(r' t=(\d+)') + +ORDER = [ + 'temp', +] + +CHARTS = { + 'temp': { + 'options': [None, '1-Wire Temperature Sensor', 'Celsius', 'Temperature', 'w1sensor.temp', 'line'], + 'lines': [] + } +} + +# Known and supported family members +# Based on linux/drivers/w1/w1_family.h and w1/slaves/w1_therm.c +THERM_FAMILY = { + '10': 'W1_THERM_DS18S20', + '22': 'W1_THERM_DS1822', + '28': 'W1_THERM_DS18B20', + '3b': 'W1_THERM_DS1825', + '42': 'W1_THERM_DS28EA00', +} + + +class Service(SimpleService): + """Provide netdata service for 1-Wire sensors""" + + def __init__(self, configuration=None, name=None): + SimpleService.__init__(self, configuration=configuration, name=name) + self.order = ORDER + self.definitions = CHARTS + self.probes = [] + + def check(self): + """Auto-detect available 1-Wire sensors, setting line definitions + and probes to be monitored.""" + try: + file_names = os.listdir(W1_DIR) + except OSError as err: + self.error(err) + return False + + lines = [] + for file_name in file_names: + if file_name[2] != '-': + continue + if not file_name[0:2] in THERM_FAMILY: + continue + + self.probes.append(file_name) + identifier = file_name[3:] + name = identifier + config_name = self.configuration.get('name_' + identifier) + if config_name: + name = config_name + lines.append(['w1sensor_temp_' + identifier, name, 'absolute', + 1, 10]) + self.definitions['temp']['lines'] = lines + return len(self.probes) > 0 + + def get_data(self): + """Return data read from sensors.""" + data = dict() + + for file_name in self.probes: + file_path = W1_DIR + file_name + '/w1_slave' + identifier = file_name[3:] + try: + with open(file_path, 'r') as device_file: + for line in device_file: + matched = RE_TEMP.search(line) + if matched: + # Round to one decimal digit to filter-out noise + value = round(int(matched.group(1)) / 1000., 1) + value = int(value * 10) + data['w1sensor_temp_' + identifier] = value + except (OSError, IOError) as err: + self.error(err) + continue + return data or None |