83 lines
2.7 KiB
Python
83 lines
2.7 KiB
Python
#!/usr/bin/env python3
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import os
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import datetime
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import traceback
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import sys
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import sendmail
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class Logger(object):
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"""
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builds log files, writes the log messages.
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If a critical error occurs, handles the bugtracking and error
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messages.
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"""
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def __init__(self, config):
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"""
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logs everything & sends bugtracking messages.
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:param config: config file
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"""
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self.config = config
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# initialize logging
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if config["logging"]["logpath"]:
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self.logpath = os.path.join(self.config["logging"]["logpath"], str(datetime.datetime.now()))
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else:
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self.logpath = os.path.join("logs", str(datetime.datetime.now()))
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print("Path of logfile: " + self.logpath)
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# intialize shutdown contact
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try:
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self.no_shutdown_contact = False
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self.contact = self.config['mail']['contact']
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except KeyError:
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self.no_shutdown_contact = True
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def log(self, message):
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"""
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Writing an error message & sometimes a traceback to a logfile in logs/
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and prints it.
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:param message: (string) Logger message to be displayed
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"""
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time = str(datetime.datetime.now())
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line = "[" + time + "] " + message + "\n"
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with open(self.logpath, 'a') as f:
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try:
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f.write(line)
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except UnicodeEncodeError:
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message = "Failed to save log message due to UTF-8 error. "
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message = message + self.generate_tb(sys.exc_info())
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self.log(message)
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print(line, end="")
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def generate_tb(self, exc):
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tb = traceback.extract_tb(exc[2]) # returns StackSummary object
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tb = "\n".join(tb.format()) # string of the actual traceback
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message = ("Traceback (most recent call last):\n",
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tb,
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exc[0].__name__) # the type of the Exception
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message = "".join(message) # concatenate to full traceback message
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return message
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def shutdown(self, tb):
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""" If something breaks, it shuts down the bot and messages the owner.
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:param tb: (string) traceback
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"""
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logmessage = "Shit went wrong, closing down.\n" + tb + "\n\n"
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if self.no_shutdown_contact:
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self.log(logmessage)
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return
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logmessage = logmessage + "Sending message to " + self.contact
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self.log(logmessage)
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try:
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mailer = sendmail.Mailer(self.config)
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mailer.send(tb, self.contact, "Ticketfrei Crash Report", attachment=self.logpath)
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except:
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self.log("Error while shutdown: " + self.generate_tb(sys.exc_info()))
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print()
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