36 lines
1.3 KiB
Python
Executable File
36 lines
1.3 KiB
Python
Executable File
#!/usr/bin/env python
|
|
import puka
|
|
import uuid
|
|
|
|
class FibonacciRpcClient(object):
|
|
def __init__(self):
|
|
self.client = client = puka.Client("amqp://localhost/")
|
|
promise = client.connect()
|
|
client.wait(promise)
|
|
|
|
promise = client.queue_declare(exclusive=True)
|
|
self.callback_queue = client.wait(promise)['queue']
|
|
|
|
self.consume_promise = client.basic_consume(queue=self.callback_queue,
|
|
no_ack=True)
|
|
|
|
def call(self, n):
|
|
correlation_id = str(uuid.uuid4())
|
|
# We don't need to wait on promise from publish, let it happen async.
|
|
self.client.basic_publish(exchange='',
|
|
routing_key='rpc_queue',
|
|
headers={'reply_to': self.callback_queue,
|
|
'correlation_id': correlation_id},
|
|
body=str(n))
|
|
while True:
|
|
msg_result = self.client.wait(self.consume_promise)
|
|
if msg_result['headers']['correlation_id'] == correlation_id:
|
|
return int(msg_result['body'])
|
|
|
|
|
|
fibonacci_rpc = FibonacciRpcClient()
|
|
|
|
print " [x] Requesting fib(30)"
|
|
response = fibonacci_rpc.call(30)
|
|
print " [.] Got %r" % (response,)
|