def send_to_frontend(queue_name, response_message, request_id):
try:
Connection.channel.queue_declare(queue_name)
msg_json = {
'requestId': request_id,
'result': response_message
}
print("\n================================== RESPONSE MESSAGE ==================================\n"
+ json.dumps(msg_json, indent=2) + "\n"
"======================================================================================\n")
Connection.channel.basic_publish(exchange='', routing_key=queue_name, body=json.dumps(msg_json))
return True
except StreamLostError:
Connection.connect_to_rabbitmq()
return False
else:
print(op + " not succeeded")
else:
msg = "Error: operation not valid"
print(msg)
send_to_frontend(queue_name, msg, request_id)
print("================================== Waiting for task message ==================================")
print("Initializing parameters...")
Config.initialize_parameters()
print("Parameters initialized")
print("Connecting to RabbitMQ...")
Connection.connect_to_rabbitmq()
print("Connection to RabbitMQ succeeded")
print("Connecting to the Database...")
db = DatabaseManager(Config.mysql_address, Config.mysql_db, Config.mysql_user, Config.mysql_pwd)
if db.isConnected() is False:
print("Error database connection")
else:
print("Connection to the Database succeeded")
Connection.channel.queue_declare('tasks')
Connection.channel.basic_consume(queue='tasks', on_message_callback=callback, auto_ack=True)
print("Start consuming")
print("================================== Waiting for task message ==================================")
Connection.channel.start_consuming()