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"""
Base Connection Classs
"""
from __future__ import (division, unicode_literals, print_function)
import logging
from leap.base.authentication import Authentication
logger = logging.getLogger(name=__name__)
class Connection(Authentication):
# JSONLeapConfig
#spec = {}
def __init__(self, *args, **kwargs):
self.connection_state = None
self.desired_connection_state = None
#XXX FIXME diamond inheritance gotcha..
#If you inherit from >1 class,
#super is only initializing one
#of the bases..!!
# I think we better pass config as a constructor
# parameter -- kali 2012-08-30 04:33
super(Connection, self).__init__(*args, **kwargs)
def connect(self):
"""
entry point for connection process
"""
pass
def disconnect(self):
"""
disconnects client
"""
pass
def shutdown(self):
"""
shutdown and quit
"""
self.desired_con_state = self.status.DISCONNECTED
def connection_state(self):
"""
returns the current connection state
"""
return self.status.current
def desired_connection_state(self):
"""
returns the desired_connection state
"""
return self.desired_connection_state
def get_icon_name(self):
"""
get icon name from status object
"""
return self.status.get_state_icon()
#
# private methods
#
def _disconnect(self):
"""
private method for disconnecting
"""
if self.subp is not None:
self.subp.terminate()
self.subp = None
# XXX signal state changes! :)
def _is_alive(self):
"""
don't know yet
"""
pass
def _connect(self):
"""
entry point for connection cascade methods.
"""
#conn_result = ConState.DISCONNECTED
try:
conn_result = self._try_connection()
except UnrecoverableError as except_msg:
logger.error("FATAL: %s" % unicode(except_msg))
conn_result = self.status.UNRECOVERABLE
except Exception as except_msg:
self.error_queue.append(except_msg)
logger.error("Failed Connection: %s" %
unicode(except_msg))
return conn_result
class ConnectionError(Exception):
"""
generic connection error
"""
def __str__(self):
if len(self.args) >= 1:
return repr(self.args[0])
else:
raise self()
class UnrecoverableError(ConnectionError):
"""
we cannot do anything about it, sorry
"""
pass
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