104 lines
3.3 KiB
Python
104 lines
3.3 KiB
Python
###############################################################################
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#
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# The MIT License (MIT)
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#
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# Copyright (c) Crossbar.io Technologies GmbH
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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# THE SOFTWARE.
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#
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###############################################################################
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from os import environ
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import sys
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import decimal
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from twisted.internet.defer import inlineCallbacks
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from autobahn import wamp
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from autobahn.twisted.wamp import ApplicationSession, ApplicationRunner
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class Calculator(ApplicationSession):
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@inlineCallbacks
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def onJoin(self, details):
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self.clear()
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yield self.register(self)
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print("Ok, calculator procedures registered!")
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@wamp.register(u'com.example.calculator.clear')
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def clear(self, arg=None):
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self.op = None
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self.current = decimal.Decimal(0)
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return str(self.current)
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@wamp.register(u'com.example.calculator.calc')
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def calc(self, op, num):
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num = decimal.Decimal(num)
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if self.op:
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if self.op == "+":
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self.current += num
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elif self.op == "-":
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self.current -= num
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elif self.op == "*":
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self.current *= num
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elif self.op == "/":
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self.current /= num
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self.op = op
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else:
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self.op = op
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self.current = num
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res = str(self.current)
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if op == "=":
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self.clear()
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return res
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if __name__ == '__main__':
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decimal.getcontext().prec = 20
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import sys
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import argparse
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# parse command line arguments
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parser = argparse.ArgumentParser()
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parser.add_argument("--web", type=int, default=8080,
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help='Web port to use for embedded Web server. Use 0 to disable.')
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parser.add_argument("--router", type=str, default=None,
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help='If given, connect to this WAMP router. Else run an embedded router on 9000.')
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args = parser.parse_args()
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from twisted.python import log
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log.startLogging(sys.stdout)
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# run WAMP application component
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from autobahn.twisted.wamp import ApplicationRunner
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runner = ApplicationRunner(
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environ.get("AUTOBAHN_DEMO_ROUTER", u"ws://127.0.0.1:8080/ws"),
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u"crossbardemo",
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)
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runner.run(Calculator)
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