tutorial/py.twisted/PythonClient.py

#!/usr/bin/env python

#
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
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# KIND, either express or implied. See the License for the
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import glob
import sys
sys.path.append('gen-py.twisted')
sys.path.insert(0, glob.glob('../../lib/py/build/lib*')[0])

from tutorial import Calculator
from tutorial.ttypes import InvalidOperation, Operation, Work

from twisted.internet.defer import inlineCallbacks
from twisted.internet import reactor
from twisted.internet.protocol import ClientCreator

from thrift.transport import TTwisted
from thrift.protocol import TBinaryProtocol


@inlineCallbacks
def main(client):
    yield client.ping()
    print('ping()')

    sum = yield client.add(1, 1)
    print(('1+1=%d' % (sum)))

    work = Work()

    work.op = Operation.DIVIDE
    work.num1 = 1
    work.num2 = 0

    try:
        quotient = yield client.calculate(1, work)
        print('Whoa? You know how to divide by zero?')
        print('FYI the answer is %d' % quotient)
    except InvalidOperation as e:
        print(('InvalidOperation: %r' % e))

    work.op = Operation.SUBTRACT
    work.num1 = 15
    work.num2 = 10

    diff = yield client.calculate(1, work)
    print(('15-10=%d' % (diff)))

    log = yield client.getStruct(1)
    print(('Check log: %s' % (log.value)))
    reactor.stop()


if __name__ == '__main__':
    d = ClientCreator(reactor,
                      TTwisted.ThriftClientProtocol,
                      Calculator.Client,
                      TBinaryProtocol.TBinaryProtocolFactory(),
                      ).connectTCP("127.0.0.1", 9090)
    d.addCallback(lambda conn: conn.client)
    d.addCallback(main)

    reactor.run()