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flask - Watson assistant deployment on Flask+WSGI server (gunicorn or wsgi)

问题描述

I am deploying my watson assistant chatbot on Flask + Gunicorn + Nginx.

I am able to successfully dockerize and run , but something is breaking my code. Multiple watson assistant sessions are being created while I send the messages to watson services. While I try to reply for an intent I get answer for another intent or slot or does not understand message

I have reviewed all the tutorials on digital ocean and github, but I think creating chatbot session should be handled differently.

app.py

from flask import Flask, render_template,Response,make_response,jsonify
import os
from ibm_watson import AssistantV2
import random
from random import randint
import json
#import report
from io import StringIO

app = Flask(__name__)

conversation = AssistantV2(
    iam_apikey = 'key',
    url='https://gateway.watsonplatform.net/assistant/api',
    version='2019-05-19')
session = conversation.create_session("someid").get_result()
variables  = None
#context_val = {}

@app.route('/')
@app.route('/index')
def chat():
    return render_template('chat.html')

@app.route('/send_message/<message>')
def send_mesage(message):
    text = ''
    response = conversation.message(
        assistant_id = 'id',
        session_id= session['session_id'],input={'text': str(message),'options': {
      'return_context': True}}
        ).get_result()
    variables =  response['output'].get('user_defined')
    #context = response['context']['skills']['main skill']['user_defined']

    for i in response['output']['generic']:
        text = text+ i['text']+'\n'
        return text
if __name__ == "__main__":
    app.run(host='0.0.0.0')

wsgi.py

from app import app

if __name__ == "__main__":
    app.run()

Dockerfile

FROM python:3.6
WORKDIR /app
ADD . /app
RUN chgrp -R 0 /app/app.log && chmod -R g=u /app/app.log
RUN pip install -r requirements.txt
EXPOSE 8080
CMD ["gunicorn", "-b", "0.0.0.0:8080", "app", "-p 8080:8080"]
RUN chmod 770 /app
USER 1001

标签： flaskibm-cloudgunicornwsgiwatson-assistant

解决方案

通过 V2 API使用IBM Watson Assistant 时，您需要注意以下对象：

  • 首先，您创建一个Assistant。它管理与 Watson Assistant 的连接。
  • 接下来，会话是聊天中的每个用户交互。
  • 最后，一条消息在会话中流向 Watson，并返回一个响应。

您可能已经在文档中看到过这个简单的代码示例，您自己的代码 - 在一般层面上 - 类似。要使其工作，您需要为每个用户会话创建 Watson 会话，然后将消息作为相应会话的一部分发送。这样，聊天上下文就可以正确保存。您的代码当前初始化 Watson 并创建一次会话。您需要为每个用户创建一个会话。查看会话管理。

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