worker.py :  » Database » Python-Remote-Objects » Pyro-3.10 » examples » distributed-computing2 » Python Open Source

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Python Open Source » Database » Python Remote Objects 
Python Remote Objects » Pyro 3.10 » examples » distributed computing2 » worker.py
#!/usr/bin/env python
import Pyro.core
import Pyro.errors
import Queue
from workitem import Workitem
import os, socket, sys
from math import sqrt

WORKERNAME = "Worker_%d@%s" % (os.getpid(), socket.gethostname())
Pyro.core.initClient()


def factorize(n):
  def isPrime(n):
    return not [x for x in xrange(2,int(sqrt(n))+1) if n%x == 0]
  primes = []
  candidates = xrange(2,n+1)
  candidate = 2
  while not primes and candidate in candidates:
    if n%candidate == 0 and isPrime(candidate):
      primes = primes + [candidate] + factorize(n/candidate)
    candidate += 1            
  return primes
    
def process(item):
  print "factorizing",item.data,"-->",
  sys.stdout.flush()
  item.result=factorize(int(item.data))
  print item.result
  item.processedBy = WORKERNAME

def main():
  dispatcher = Pyro.core.getProxyForURI("PYRONAME://:Distributed2.dispatcher")
  print "This is worker",WORKERNAME
  
  print "getting work from dispatcher."
  
  while True:
    try:
      item = dispatcher.getWork()
    except Queue.Empty:
      print "no work available yet."
    else:
      process(item)
      dispatcher.putResult(item)
      


if __name__=="__main__":
  main()
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