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import queue
from Pyro5.api import expose, behavior, serve, register_dict_to_class
from workitem import Workitem
# For 'workitem.Workitem' we register a deserialization hook to be able to get these back from Pyro
register_dict_to_class("workitem.Workitem", Workitem.from_dict)
@expose
@behavior(instance_mode="single")
class DispatcherQueue(object):
def __init__(self):
self.workqueue = queue.Queue()
self.resultqueue = queue.Queue()
def putWork(self, item):
self.workqueue.put(item)
def getWork(self, timeout=5):
try:
return self.workqueue.get(block=True, timeout=timeout)
except queue.Empty:
raise ValueError("no items in queue")
def putResult(self, item):
self.resultqueue.put(item)
def getResult(self, timeout=5):
try:
return self.resultqueue.get(block=True, timeout=timeout)
except queue.Empty:
raise ValueError("no result available")
def workQueueSize(self):
return self.workqueue.qsize()
def resultQueueSize(self):
return self.resultqueue.qsize()
# main program
serve({
DispatcherQueue: "example.distributed.dispatcher"
})
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