First check for threaded network checks.

TODO: tests.

2 files changed, 57 insertions, 0 deletions

diff --git a/src/leap/base/constants.py b/src/leap/base/constants.py
index 7a1415fb..8a76b6b4 100644
--- a/src/leap/base/constants.py
+++ b/src/leap/base/constants.py
@@ -28,3 +28,5 @@ DEFAULT_PROVIDER_DEFINITION = {
     u'version': u'0.1.0'}
 
 MAX_ICMP_PACKET_LOSS = 10
+
+ROUTE_CHECK_INTERVAL = 120
diff --git a/src/leap/base/network.py b/src/leap/base/network.py
new file mode 100644
index 00000000..58f903e1
--- /dev/null
+++ b/src/leap/base/network.py
@@ -0,0 +1,55 @@
+# -*- 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
+
+