Fixed Exception dialog disapearing after a view second when exception occurs during app startup.
Problem was caused by splashscreen timeout, wx closing averything else if there is no more main frame.
Changes:
- no more timeout for splashscreen
- use wx.App OnInit method to give first operation to mainloop, object are then now created in mainloop
- main loop is then created _before_ showing splash screen
- no more wxyield or wx processevent tricks needed to display splash screen
- exception handler not blocking anymore on dialog (callafter)
- because of mainloop being there before everything, exit must be called explicitely if exception caught during startup -> exit parameter in handle_exception + try/except around startup calls
UNTESTED ON WINDOWS
#!/usr/bin/env python
# -*- coding: utf-8 -*-
# This file is part of Beremiz runtime.
#
# Copyright (C) 2007: Edouard TISSERANT and Laurent BESSARD
#
# See COPYING.Runtime file for copyrights details.
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
from __future__ import absolute_import
from __future__ import print_function
import time
import json
from autobahn.twisted import wamp
from autobahn.twisted.websocket import WampWebSocketClientFactory, connectWS
from autobahn.wamp import types, auth
from autobahn.wamp.serializer import MsgPackSerializer
from twisted.internet.defer import inlineCallbacks
from twisted.internet.protocol import ReconnectingClientFactory
_WampSession = None
_PySrv = None
ExposedCalls = [
"StartPLC",
"StopPLC",
"ForceReload",
"GetPLCstatus",
"NewPLC",
"MatchMD5",
"SetTraceVariablesList",
"GetTraceVariables",
"RemoteExec",
"GetLogMessage",
"ResetLogCount",
]
# Those two lists are meant to be filled by customized runtime
# or User python code.
""" crossbar Events to register to """
SubscribedEvents = []
""" things to do on join (callables) """
DoOnJoin = []
def GetCallee(name):
""" Get Callee or Subscriber corresponding to '.' spearated object path """
names = name.split('.')
obj = _PySrv.plcobj
while names:
obj = getattr(obj, names.pop(0))
return obj
class WampSession(wamp.ApplicationSession):
def onConnect(self):
if "secret" in self.config.extra:
user = self.config.extra["ID"].encode('utf8')
self.join(u"Automation", [u"wampcra"], user)
else:
self.join(u"Automation")
def onChallenge(self, challenge):
if challenge.method == u"wampcra":
secret = self.config.extra["secret"].encode('utf8')
signature = auth.compute_wcs(secret, challenge.extra['challenge'].encode('utf8'))
return signature.decode("ascii")
else:
raise Exception("don't know how to handle authmethod {}".format(challenge.method))
@inlineCallbacks
def onJoin(self, details):
global _WampSession
_WampSession = self
ID = self.config.extra["ID"]
print('WAMP session joined by :', ID)
for name in ExposedCalls:
regoption = types.RegisterOptions(u'exact', u'last', None, None)
yield self.register(GetCallee(name), u'.'.join((ID, name)), regoption)
for name in SubscribedEvents:
yield self.subscribe(GetCallee(name), unicode(name))
for func in DoOnJoin:
yield func(self)
def onLeave(self, details):
global _WampSession
_WampSession = None
print(_('WAMP session left'))
class ReconnectingWampWebSocketClientFactory(WampWebSocketClientFactory, ReconnectingClientFactory):
def clientConnectionFailed(self, connector, reason):
print(_("WAMP Client connection failed (%s) .. retrying .." % time.ctime()))
ReconnectingClientFactory.clientConnectionFailed(self, connector, reason)
def clientConnectionLost(self, connector, reason):
print(_("WAMP Client connection lost (%s) .. retrying .." % time.ctime()))
ReconnectingClientFactory.clientConnectionFailed(self, connector, reason)
def LoadWampClientConf(wampconf):
try:
WSClientConf = json.load(open(wampconf))
return WSClientConf
except ValueError, ve:
print(_("WAMP load error: "), ve)
return None
except Exception:
return None
def LoadWampSecret(secretfname):
try:
WSClientWampSecret = open(secretfname, 'rb').read()
return WSClientWampSecret
except ValueError, ve:
print(_("Wamp secret load error:"), ve)
return None
except Exception:
return None
def RegisterWampClient(wampconf, secretfname):
WSClientConf = LoadWampClientConf(wampconf)
if not WSClientConf:
print(_("WAMP client connection not established!"))
return
WampSecret = LoadWampSecret(secretfname)
if WampSecret is not None:
WSClientConf["secret"] = WampSecret
# create a WAMP application session factory
component_config = types.ComponentConfig(
realm=WSClientConf["realm"],
extra=WSClientConf)
session_factory = wamp.ApplicationSessionFactory(
config=component_config)
session_factory.session = WampSession
# create a WAMP-over-WebSocket transport client factory
transport_factory = ReconnectingWampWebSocketClientFactory(
session_factory,
url=WSClientConf["url"],
serializers=[MsgPackSerializer()])
# start the client from a Twisted endpoint
conn = connectWS(transport_factory)
print(_("WAMP client connecting to :"), WSClientConf["url"])
return conn
def GetSession():
return _WampSession
def SetServer(pysrv):
global _PySrv
_PySrv = pysrv