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###############################################################################
#
# The MIT License (MIT)
#
# Copyright (c) typedef int GmbH
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
###############################################################################
import math
from os import environ
from twisted.internet import reactor
from twisted.internet.defer import inlineCallbacks
from autobahn import wamp
from autobahn.wamp.exception import ApplicationError
from autobahn.twisted.wamp import ApplicationSession, ApplicationRunner
@wamp.error("com.myapp.error1")
class AppError1(Exception):
"""
An application specific exception that is decorated with a WAMP URI,
and hence can be automapped by Autobahn.
"""
class Component(ApplicationSession):
"""
Example WAMP application frontend that catches exceptions.
"""
@inlineCallbacks
def onJoin(self, details):
print("session attached")
# catching standard exceptions
##
for x in [2, 0, -2]:
try:
res = yield self.call('com.myapp.sqrt', x)
except Exception as e:
print("Error: {} {}".format(e, e.args))
else:
print("Result: {}".format(res))
# catching WAMP application exceptions
##
for name in ['foo', 'a', '*' * 11, 'Hello']:
try:
res = yield self.call('com.myapp.checkname', name)
except ApplicationError as e:
print("Error: {} {} {} {}".format(e, e.error, e.args, e.kwargs))
else:
print("Result: {}".format(res))
# defining and automapping WAMP application exceptions
##
self.define(AppError1)
try:
yield self.call('com.myapp.compare', 3, 17)
except AppError1 as e:
print("Compare Error: {}".format(e))
print("Exiting; we received only errors we expected.")
self.leave()
def onDisconnect(self):
print("disconnected")
reactor.stop()
if __name__ == '__main__':
url = environ.get("AUTOBAHN_DEMO_ROUTER", "ws://127.0.0.1:8080/ws")
realm = "crossbardemo"
runner = ApplicationRunner(url, realm)
runner.run(Component)
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