tutorial/py.twisted/PythonServer.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,
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# KIND, either express or implied. See the License for the
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import sys, glob
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 *

from shared.ttypes import SharedStruct

from zope.interface import implements
from twisted.internet import reactor

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

class CalculatorHandler:
  implements(Calculator.Iface)  
  def __init__(self):
    self.log = {}

  def ping(self):
    print 'ping()'

  def add(self, n1, n2):
    print 'add(%d,%d)' % (n1, n2)
    return n1+n2

  def calculate(self, logid, work):
    print 'calculate(%d, %r)' % (logid, work)

    if work.op == Operation.ADD:
      val = work.num1 + work.num2
    elif work.op == Operation.SUBTRACT:
      val = work.num1 - work.num2
    elif work.op == Operation.MULTIPLY:
      val = work.num1 * work.num2
    elif work.op == Operation.DIVIDE:
      if work.num2 == 0:
        x = InvalidOperation()
        x.what = work.op
        x.why = 'Cannot divide by 0'
        raise x
      val = work.num1 / work.num2
    else:
      x = InvalidOperation()
      x.what = work.op
      x.why = 'Invalid operation'
      raise x

    log = SharedStruct()
    log.key = logid
    log.value = '%d' % (val)
    self.log[logid] = log

    return val

  def getStruct(self, key):
    print 'getStruct(%d)' % (key)
    return self.log[key]

  def zip(self):
    print 'zip()'

if __name__ == '__main__':
    handler = CalculatorHandler()
    processor = Calculator.Processor(handler)
    pfactory = TBinaryProtocol.TBinaryProtocolFactory()
    server = reactor.listenTCP(9090,
                TTwisted.ThriftServerFactory(processor,
                pfactory), interface="127.0.0.1")
    reactor.run()