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# -*- coding: utf-8 -*-
from functools import lru_cache
import logging
import socket
__author__ = 'Artur Barseghyan'
__copyright__ = '2013-2020 Artur Barseghyan'
__license__ = 'MPL-1.1 OR GPL-2.0-only OR LGPL-2.1-or-later'
__all__ = (
'internet_available_only',
'log_info',
)
LOG_INFO = True
LOGGER = logging.getLogger(__name__)
def log_info(func):
"""Log some useful info."""
if not LOG_INFO:
return func
def inner(self, *args, **kwargs):
"""Inner."""
result = func(self, *args, **kwargs)
LOGGER.debug('\n\n%s', func.__name__)
LOGGER.debug('============================')
if func.__doc__:
LOGGER.debug('""" %s """', func.__doc__.strip())
LOGGER.debug('----------------------------')
if result is not None:
LOGGER.debug(result)
LOGGER.debug('\n++++++++++++++++++++++++++++')
return result
return inner
@lru_cache(maxsize=32)
def is_internet_available(host="8.8.8.8", port=53, timeout=3):
"""Check if internet is available.
Host: 8.8.8.8 (google-public-dns-a.google.com)
OpenPort: 53/tcp
Service: domain (DNS/TCP)
"""
try:
socket.setdefaulttimeout(timeout)
socket.socket(socket.AF_INET, socket.SOCK_STREAM).connect((host, port))
return True
except socket.error as ex:
print(ex)
return False
def internet_available_only(func):
def inner(self, *args, **kwargs):
"""Inner."""
if not is_internet_available():
LOGGER.debug('\n\n%s', func.__name__)
LOGGER.debug('============================')
if func.__doc__:
LOGGER.debug('""" %s """', func.__doc__.strip())
LOGGER.debug('----------------------------')
LOGGER.debug("Skipping because no Internet connection available.")
LOGGER.debug('\n++++++++++++++++++++++++++++')
return None
result = func(self, *args, **kwargs)
return result
return inner
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