translator.py
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#!/usr/bin/python
# -*- coding: utf-8 -*-
#Autor: Erickson Silva
#Email: <erickson.silva@lavid.ufpb.br>
#LAViD - Laboratório de Aplicações de Vídeo Digital
import os
import pika
import json
from PortGlosa import traduzir
from thread import start_new_thread
from time import sleep
# credentials = pika.PlainCredentials('test', 'test')
# conn_send = pika.BlockingConnection(pika.ConnectionParameters(host='150.165.205.10', credentials=credentials))
# conn_receive = pika.BlockingConnection(pika.ConnectionParameters(host='150.165.205.10', credentials=credentials))
conn_send = pika.BlockingConnection(pika.ConnectionParameters(host='localhost',heartbeat_interval=0))
conn_receive = pika.BlockingConnection(pika.ConnectionParameters(host='localhost',heartbeat_interval=0))
def run(ch, method, properties, body):
print "Translating...",
body = json.loads(body)
try:
gloss = traduzir(body["text"].encode("utf-8"))
body["gloss"] = gloss
del body["text"]
except KeyError:
pass
send_to_queue(body, properties)
print "OK"
def send_to_queue(body, props):
try:
channel = conn_send.channel()
except KeyError:
reload_connection_send()
channel = conn_send.channel()
queue = "translations"
channel.queue_declare(queue=queue)
channel.basic_publish(exchange='',
routing_key=queue,
properties=pika.BasicProperties(correlation_id = props.correlation_id),
body=json.dumps(body))
channel.close()
def receive_from_queue():
try:
channel = conn_receive.channel()
except KeyError:
reload_connection_receive()
channel = conn_receive.channel()
queue = "extractions"
channel.queue_declare(queue=queue)
channel.basic_qos(prefetch_count=1)
channel.basic_consume(run,
queue=queue,
no_ack=True)
channel.start_consuming()
channel.close()
def reload_connection_send():
global conn_send
try:
conn_send.close()
except:
pass
conn_send = pika.BlockingConnection(pika.ConnectionParameters(host='localhost',heartbeat_interval=0))
def reload_connection_receive():
global conn_receive
try:
conn_receive.close()
except:
pass
conn_receive = pika.BlockingConnection(pika.ConnectionParameters(host='localhost',heartbeat_interval=0))
def keep_alive(conn_send, conn_receive):
while True:
sleep(30)
try:
conn_send.process_data_events()
conn_receive.process_data_events()
except:
continue
#start_new_thread(keep_alive, (conn_send, conn_receive))
while True:
try:
receive_from_queue()
except KeyboardInterrupt:
conn_send.close()
conn_receive.close()
os._exit(0)