class __Server:
def __init__(self):
scheduler = IOLoopScheduler(IOLoop.current())
self._app = Application([
(r'/exchange', ExchangeHandler),
(r'/', MainHandler),
])
self.orders = PriorityQueue()
self.posted_orders = []
self.fulfilled_orders = []
self.messages = Subject()
only_messages = self.messages \
.filter(lambda msg: msg[0] == 'message') \
.map(lambda msg: msg[1].split(',')) \
.publish()
def queue_order(msg):
self.orders.put(Order.from_list(msg))
only_messages \
.filter(lambda msg: msg[0] == 'order') \
.map(lambda msg: msg[1:]) \
.subscribe(queue_order)
def process_order(time):
try:
order = self.orders.get_nowait()
print('processing order: {} [{}]'.format(
order, order.timestamp))
matching = None
for posted in self.posted_orders:
if posted.matches(order):
matching = posted
break
if matching is None:
self.posted_orders.append(order)
print('could not find match, posted order count is {}'.
format(len(self.posted_orders)))
else:
self.posted_orders.remove(posted)
self.fulfilled_orders.append(posted)
self.fulfilled_orders.append(order)
print('order fulfilled: {}'.format(order))
print('fulfilled by: {}'.format(posted))
except QueueEmpty:
pass
Observable.interval(100,
scheduler=scheduler).subscribe(process_order)
only_messages.connect()
def start(self):
self._app.listen(8888)
from tornado.queues import PriorityQueue q = PriorityQueue() q.put((1, 'medium-priority item')) q.put((0, 'high-priority item')) q.put((10, 'low-priority item')) print(q.get_nowait()) print(q.get_nowait()) print(q.get_nowait())
#!urs/bin/env python #coding:utf-8 # PriorityQueue：一个又优先级的Queue最小的最最优先。 # 写入条目通常是元组，类似（proority number, data）。 from tornado.queues import PriorityQueue q = PriorityQueue() q.put((1, 'medium-priority item')) q.put((0, 'high-priority item')) q.put((10, 'low-priority item')) print(q.get_nowait()) print(q.get_nowait()) print(q.get_nowait())
