+++ /dev/null
-import logging, logging.handlers, os, time, queue, threading, subprocess
-import traceback, smtplib
-import email.mime.text, email.utils
-
-# Logging configuration
-syslogLevel = logging.INFO
-mailLevel = logging.CRITICAL # must be "larger" than syslog level!
-from config import mailAddress
-printLevel = logging.DEBUG
-
-# Mail logging handler
-def sendeMail(subject, text, receivers, sender='sphinx@hacksaar.de', replyTo=None):
- assert isinstance(receivers, list)
- if not len(receivers): return # nothing to do
- # construct content
- msg = email.mime.text.MIMEText(text.encode('UTF-8'), 'plain', 'UTF-8')
- msg['Subject'] = subject
- msg['Date'] = email.utils.formatdate(localtime=True)
- msg['From'] = sender
- msg['To'] = ', '.join(receivers)
- if replyTo is not None:
- msg['Reply-To'] = replyTo
- # put into envelope and send
- s = smtplib.SMTP('localhost')
- s.sendmail(sender, receivers, msg.as_string())
- s.quit()
-
-# logging function
-class Logger:
- def __init__ (self):
- self.syslog = logging.getLogger("tuerd")
- self.syslog.setLevel(logging.DEBUG)
- self.syslog.addHandler(logging.handlers.SysLogHandler(address = '/dev/log',
- facility = logging.handlers.SysLogHandler.LOG_LOCAL0))
-
- def _log (self, lvl, what):
- thestr = "%s[%d]: %s" % ("tuerd", os.getpid(), what)
- # console log
- if lvl >= printLevel:
- print(thestr)
- # syslog
- if lvl >= syslogLevel:
- self.syslog.log(lvl, thestr)
- # mail log
- if lvl >= mailLevel and mailAddress is not None:
- sendeMail('Kritischer Türfehler', what, mailAddress)
-
- def debug(self, what):
- self._log(logging.DEBUG, what)
- def info(self, what):
- self._log(logging.INFO, what)
- def warning(self, what):
- self._log(logging.WARNING, what)
- def error(self, what):
- self._log(logging.ERROR, what)
- def critical(self, what):
- self._log(logging.CRITICAL, what)
-
-logger = Logger()
-
-# run a Python command asynchronously
-def fire_and_forget(f):
- def _fire_and_forget():
- try:
- f()
- except Exception:
- logger.critical("fire_and_forget: Got exception out of callback:\n%s" % traceback.format_exc())
- t = threading.Thread(target=_fire_and_forget)
- t.start()
-
-# run a command asynchronously and log the return value if not 0
-# prefix must be a string identifying the code position where the call came from
-def fire_and_forget_cmd (cmd, log_prefix):
- logger.debug("Firing and forgetting command from %s: %s" % (log_prefix,str(cmd)))
- def _fire_and_forget_cmd ():
- with open("/dev/null", "w") as fnull:
- retcode = subprocess.call(cmd, stdout=fnull, stderr=fnull)
- if retcode is not 0:
- logger.error("%sReturn code %d at command: %s" % (log_prefix,retcode,str(cmd)))
- fire_and_forget(_fire_and_forget_cmd)
-
-# Threaded callback class
-class ThreadFunction():
- _CALL = 0
- _TERM = 1
-
- def __init__(self, f, name):
- self.name = name
- self._f = f
- self._q = queue.Queue()
- self._t = threading.Thread(target=self._thread_func)
- self._t.start()
-
- def _thread_func(self):
- while True:
- (cmd, data) = self._q.get()
- # run command
- if cmd == ThreadFunction._CALL:
- try:
- self._f(*data)
- except Exception as e:
- logger.critical("ThreadFunction: Got exception out of handler thread %s:\n%s" % (self.name, traceback.format_exc()))
- elif cmd == ThreadFunction._TERM:
- assert data is None
- break
- else:
- logger.error("ThreadFunction: Command %d does not exist" % cmd)
-
- def __call__(self, *arg):
- self._q.put((ThreadFunction._CALL, arg))
-
- def stop(self):
- # empty the queue
- try:
- while True:
- self._q.get_nowait()
- except queue.Empty:
- pass
- # now wait till the job-in-progress is done
- self._q.put((ThreadFunction._TERM, None))
- self._t.join()
-
-# Thread timer-repeater class: Call a function every <sleep_time> seconds
-class ThreadRepeater():
- def __init__(self, f, sleep_time, name):
- self.name = name
- self._f = f
- self._stop = False
- self._sleep_time = sleep_time
- self._t = threading.Thread(target=self._thread_func)
- self._t.start()
-
- def _thread_func(self):
- while True:
- if self._stop:
- break
- try:
- self._f()
- except Exception as e:
- logger.critical("ThreadRepeater: Got exception out of handler thread %s:\n%s" % (self.name, traceback.format_exc()))
- time.sleep(self._sleep_time)
-
- def stop(self):
- self._stop = True
- self._t.join()
projects / saartuer.git / blobdiff