https://pythonbasics.org

#!/usr/bin/env python3 import os import sys import time from http.server import BaseHTTPRequestHandler, HTTPServer import logging import traceback import re import locale import subprocess import configparser """ @package docstring Resources dashboard Starts a webserver on a specific port of the monitored server and serves a simple webpage containing the monitored sensors graphs. Installation: - Copy dashboard.cfg in /usr/local/etc/dashboard.cfg and customize it - Copy dashboard.py in /usr/local/bin/dashboard.py Usage: Start the server: /usr/local/bin/dashboard.py /usr/local/etc/dashboard.cfg @author Daniele Verducci This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see . """ NAME = 'dashboard' VERSION = '0.1' DESCRIPTION = 'A simple system resources dashboard' class WebServer(BaseHTTPRequestHandler): def __init__(self, configPath): ''' Sets up locale (needed for parsing numbers) ''' # Get system locale from $LANG (i.e. "en_GB.UTF-8") systemLocale = os.getenv('LANG') if not systemLocale: raise ValueError('System environment variabile $LANG is not set!') locale.setlocale(locale.LC_ALL, systemLocale) ''' Reads the config ''' self._log = logging.getLogger('main') if not os.path.exists(configPath) or not os.path.isfile(configPath): raise ValueError('configPath must be a file') self.config = configparser.ConfigParser(interpolation=None) # Disable interpolation because contains regexp self.config.read(configPath) self.hostname = os.uname()[1] def do_GET(self): self.readSensors() self.send_response(200) self.send_header("Content-type", "text/html") self.end_headers() self.wfile.write(bytes("https://pythonbasics.org", "utf-8")) self.wfile.write(bytes("

Request: %s

" % self.path, "utf-8")) self.wfile.write(bytes("", "utf-8")) self.wfile.write(bytes("

This is an example web server.

", "utf-8")) self.wfile.write(bytes("", "utf-8")) def readSensors(): return if __name__ == '__main__': import argparse parser = argparse.ArgumentParser( prog = NAME + '.py', description = NAME + ' ' + VERSION + '\n' + DESCRIPTION, formatter_class = argparse.RawTextHelpFormatter ) parser.add_argument('configFile', help="configuration file path") parser.add_argument('-q', '--quiet', action='store_true', help="suppress non-essential output") args = parser.parse_args() if args.quiet: level = logging.WARNING else: level = logging.INFO logging.basicConfig(level=level) port = httpd = HTTPServer(('localhost', port), Server) logging.info('Serving on port {}'.format(port)) try: httpd.serve_forever() except KeyboardInterrupt: pass except Exception as e: logging.critical(traceback.format_exc()) print('ERROR: {}'.format(e)) sys.exit(1) finally: httpd.server_close() sys.exit(0)