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import random
import sys
import Pyro4
from Pyro4.util import SerializerBase
from workitem import Workitem
# For 'workitem.Workitem' we register a deserialization hook to be able to get these back from Pyro
SerializerBase.register_dict_to_class("workitem.Workitem", Workitem.from_dict)
NUMBER_OF_ITEMS = 40
def main():
print("\nThis program will calculate Prime Factorials of a bunch of random numbers.")
print("The more workers you will start (on different cpus/cores/machines),")
print("the faster you will get the complete list of results!\n")
with Pyro4.core.Proxy("PYRONAME:example.distributed.dispatcher") as dispatcher:
placework(dispatcher)
numbers = collectresults(dispatcher)
printresults(numbers)
def placework(dispatcher):
print("placing work items into dispatcher queue.")
for i in range(NUMBER_OF_ITEMS):
if sys.version_info < (3, 0):
# python 2.x range arguments needs to be within C int range
number = random.randint(3211, 12000) * random.randint(3211, 11000)
else:
# python 3.x allows arbitrary size range
number = random.randint(3211, 4999999) * random.randint(3211, 999999)
item = Workitem(i + 1, number)
dispatcher.putWork(item)
def collectresults(dispatcher):
print("getting results from dispatcher queue.")
numbers = {}
while len(numbers) < NUMBER_OF_ITEMS:
try:
item = dispatcher.getResult()
except ValueError:
print("Not all results available yet (got %d out of %d). Work queue size: %d" %
(len(numbers), NUMBER_OF_ITEMS, dispatcher.workQueueSize()))
else:
print("Got result: %s (from %s)" % (item, item.processedBy))
numbers[item.data] = item.result
if dispatcher.resultQueueSize() > 0:
print("there's still stuff in the dispatcher result queue, that is odd...")
return numbers
def printresults(numbers):
print("\nComputed Prime Factorials follow:")
for (number, factorials) in numbers.items():
print("%d --> %s" % (number, factorials))
if __name__ == "__main__":
main()
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