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# -*- coding: utf-8 -*-
from __future__ import (print_function)
from leap.base.checks import LeapNetworkChecker
from leap.base.constants import ROUTE_CHECK_INTERVAL
from leap.util.coroutines import (launch_thread, process_events)
from time import sleep
class NetworkChecker(object):
"""
Manages network checking thread that makes sure we have a working network
connection.
"""
def __init__(self, *args, **kwargs):
self.status_signals = kwargs.pop('status_signals', None)
self.watcher_cb = kwargs.pop('status_signals', None)
def start(self):
self._launch_recurrent_network_checks((self.watcher_cb,))
def stop(self):
raise NotImplementedError
def run_checks(self):
pass
#private methods
#here all the observers in fail_callbacks expect one positional argument,
#which is exception so we can try by passing a lambda with logger to
#check it works.
def _network_checks_thread(self, fail_callbacks):
print('fail_callbacks: %s' % fail_callbacks)
print(len(fail_callbacks))
observer_dict = dict(((
observer, process_events(observer)) for observer in fail_callbacks))
netchecker = LeapNetworkChecker()
while True:
try:
netchecker.check_internet_connection()
sleep(ROUTE_CHECK_INTERVAL)
except Exception as exc:
for obs in observer_dict:
observer_dict[obs].send(exc)
def _launch_recurrent_network_checks(fail_callbacks):
print(type(fail_callbacks))
watcher = launch_thread(
network_checks_thread,
(fail_callbacks,))
return watcher
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