#!/usr/bin/env python3
import pika
import uuid
import argparse
parser = argparse.ArgumentParser()
parser.add_argument('-H', '--host', default='localhost', help='default: localhost')
parser.add_argument('-q', '--queue')
parser.add_argument('-m', '--message')
args = parser.parse_args()
class RpcClient(object):
def __init__(self):
self.connection = pika.BlockingConnection(
pika.ConnectionParameters(host=args.host))
self.channel = self.connection.channel()
result = self.channel.queue_declare(queue='', exclusive=True)
self.callback_queue = result.method.queue
self.channel.basic_consume(
queue=self.callback_queue,
on_message_callback=self.on_response,
auto_ack=True)
self.response = None
self.corr_id = None
def on_response(self, ch, method, props, body):
if self.corr_id == props.correlation_id:
self.response = body
def call(self, msg):
self.response = None
self.corr_id = str(uuid.uuid4())
self.channel.basic_publish(
exchange='',
routing_key=args.queue,
properties=pika.BasicProperties(
reply_to=self.callback_queue,
correlation_id=self.corr_id,
),
body=msg)
self.connection.process_data_events(time_limit=None)
return self.response
rpc = RpcClient()
response = rpc.call(args.message)
print(str(response))