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logger.py
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logger.py
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"""Cyberjunky's 3Commas bot helpers."""
### credits got to Cyberjunky for using his logging code ###
import datetime
import json
import logging
import os
import queue
import threading
import time
from logging.handlers import TimedRotatingFileHandler as _TimedRotatingFileHandler
import apprise
class NotificationHandler:
"""Notification class."""
def __init__(self, program, enabled=False, notify_urls=None):
self.program = program
self.message = ""
if enabled and notify_urls:
self.apobj = apprise.Apprise()
urls = json.loads(notify_urls)
for url in urls:
self.apobj.add(url)
self.queue = queue.Queue()
self.start_worker()
self.enabled = True
else:
self.enabled = False
def start_worker(self):
"""Start notification worker."""
threading.Thread(target=self.process_queue, daemon=True).start()
def process_queue(self):
"""Process the queue."""
while True:
message, attachments = self.queue.get()
if attachments:
self.apobj.notify(body=message, attach=attachments)
else:
self.apobj.notify(body=message)
self.queue.task_done()
def queue_notification(self, message):
"""Queue notification messages."""
if self.enabled:
message.encode(encoding="UTF-8", errors="strict")
now = datetime.datetime.now()
self.message += now.strftime("%H:%M:%S") + f" - {message}\n\n"
def send_notification(self):
"""Send the notification messages if there are any."""
if self.enabled and self.message:
msg = f"[{self.program}]\n\n" + self.message
self.queue.put((msg, []))
self.message = ""
class TimedRotatingFileHandler(_TimedRotatingFileHandler):
"""Override original code to fix bug with not deleting old logfiles."""
def __init__(
self, filename="", when="midnight", interval=1, backupCount=7, encoding="utf-8"
):
super().__init__(
filename=filename,
when=when,
interval=int(interval),
backupCount=int(backupCount),
encoding=encoding,
)
def getFilesToDelete(self):
"""Find all logfiles present."""
dirname, basename = os.path.split(self.baseFilename)
filenames = os.listdir(dirname)
result = []
prefix = basename + "."
plen = len(prefix)
for filename in filenames:
if filename[:plen] == prefix:
suffix = filename[plen:]
if self.extMatch.match(suffix):
result.append(os.path.join(dirname, filename))
result.sort()
if len(result) < self.backupCount:
result = []
else:
result = result[: len(result) - self.backupCount]
return result
def doRollover(self):
"""Delete old logfiles but keep latest backupCount amount."""
super().doRollover()
self.close()
timetuple = time.localtime(time.time())
dfn = self.baseFilename + "." + time.strftime(self.suffix, timetuple)
if os.path.exists(dfn):
os.remove(dfn)
os.rename(self.baseFilename, dfn)
if self.backupCount > 0:
for oldlog in self.getFilesToDelete():
os.remove(oldlog)
self.stream = open(self.baseFilename, "w")
currenttime = int(time.time())
newrolloverat = self.computeRollover(currenttime)
while newrolloverat <= currenttime:
newrolloverat = newrolloverat + self.interval
self.rolloverAt = newrolloverat
class Logger:
"""Logger class."""
my_logger = None
def __init__(
self,
datadir,
program,
notificationhandler,
logstokeep,
debug_enabled,
notify_enabled,
):
"""Logger init."""
self.my_logger = logging.getLogger()
self.datadir = datadir
self.program = program
self.notify_enabled = notify_enabled
self.notificationhandler = notificationhandler
if debug_enabled:
self.my_logger.setLevel(logging.DEBUG)
self.my_logger.propagate = False
else:
self.my_logger.setLevel(logging.INFO)
self.my_logger.propagate = False
date_fmt = "%Y-%m-%d %H:%M:%S"
formatter = logging.Formatter(
f"%(asctime)s - {program} - %(levelname)s - %(message)s", date_fmt
)
console_formatter = logging.Formatter(
f"%(asctime)s - {program} - %(levelname)s - %(message)s", date_fmt
)
# Create directory if not exists
if not os.path.exists(f"{self.datadir}/logs"):
os.makedirs(f"{self.datadir}/logs")
# Log to file and rotate if needed
file_handle = TimedRotatingFileHandler(
filename=f"{self.datadir}/logs/{self.program}.log",
backupCount=logstokeep,
encoding="utf-8",
)
file_handle.setFormatter(formatter)
self.my_logger.addHandler(file_handle)
# Log to console
console_handle = logging.StreamHandler()
if debug_enabled:
console_handle.setLevel(logging.DEBUG)
else:
console_handle.setLevel(logging.INFO)
console_handle.setFormatter(console_formatter)
self.my_logger.addHandler(console_handle)
self.info("Started on %s" % time.strftime("%A %H:%M:%S %Y-%m-%d"))
if self.notify_enabled:
self.info("Notifications are enabled")
else:
self.info("Notifications are disabled")
def log(self, message, level="info"):
"""Call the log levels."""
if level == "info":
self.my_logger.info(message)
elif level == "warning":
self.my_logger.warning(message)
elif level == "error":
self.my_logger.error(message)
elif level == "debug":
self.my_logger.debug(message)
def info(self, message, notify=False):
"""Info level."""
self.log(message, "info")
if self.notify_enabled and notify:
self.notificationhandler.queue_notification(message)
def warning(self, message, notify=True):
"""Warning level."""
self.log(message, "warning")
if self.notify_enabled and notify:
self.notificationhandler.queue_notification(message)
def error(self, message, notify=True):
"""Error level."""
self.log(message, "error")
if self.notify_enabled and notify:
self.notificationhandler.queue_notification(message)
def debug(self, message, notify=False):
"""Debug level."""
self.log(message, "debug")
if self.notify_enabled and notify:
self.notificationhandler.queue_notification(message)