dify对接RAGflow Agent

一、概述

在前面几篇文章，介绍了RAGflow Agent，实现了text-to-sql功能，以及RAGflow Agent api接口调用。

文章链接如下：

https://www.cnblogs.com/xiao987334176/p/18816166

https://www.cnblogs.com/xiao987334176/p/18816547

二、dify对接

dify对接很简单，直接调用RAGflow Agent api接口，就可以了。

新建工作流

新建一个工作流，选择chatflow

 修改流程，效果如下：

 重点看代码执行

 完整代码如下：

import requests
import json

API_HOST = "http://10.44.32.14:8081"
API_KEY = "ragflow-U2N***"
AGENT_ID = "002b4af814f411f0a9a80242c0a83006"
question = ""

# 请求url
url = API_HOST + "/api/v1/agents/" + AGENT_ID + "/completions"
# print(url)

# 自定义请求头
headers = {
    "Authorization": "Bearer %s" % API_KEY,
    "Content-Type": "application/json",
}


class AgentStreamResponse:
    def __init__(self, arg1):
        self.arg1 = arg1

    def get_session_id(self):
        """
        获取会话 ID
        """
        data = {"id": AGENT_ID}
        response = requests.post(url, data=data, headers=headers)
        try:
            line_list = []
            with requests.post(
                url, json=data, headers=headers, stream=True, timeout=30
            ) as response:
                if response.status_code == 200:
                    for line in response.iter_lines():
                        if line:  # 过滤掉空行
                            # print(line.decode("utf-8"))
                            line_list.append(line.decode("utf-8"))
                else:
                    print(f"请求失败，状态码: {response.status_code}")
                    return False

            # print("line_list",line_list)

            first_line = line_list[0]
            # 提取data内容
            line_row = first_line.split("data:")[1]
            # json解析
            line_dict = json.loads(line_row)
            # 获取session_id
            session_id = line_dict["data"]["session_id"]
            return session_id
        except requests.exceptions.RequestException as e:
            print(f"请求错误: {e}")
            return False

    def get_stream_data(self):
        """
        获取流式数据
        """
        try:
            session_id = self.get_session_id()
            data = {
                "id": AGENT_ID,
                "question": self.arg1,
                "stream": "true",
                "session_id": session_id,
            }
            with requests.post(
                url, json=data, headers=headers, stream=True, timeout=30
            ) as response:
                if response.status_code == 200:
                    list_data = []
                    for line in response.iter_lines():
                        if line:  # 过滤掉空行
                            print(line.decode("utf-8"))
                            list_data.append(line.decode("utf-8"))
                    last_data = list_data[-2]
                    # 提取data内容
                    line_row = last_data.split("data:")[1]
                    # json解析
                    line_dict = json.loads(line_row)
                    # 获取session_id
                    answer = line_dict["data"]["answer"]
                    return answer
                    # return list_data[-2]
                else:
                    print(f"请求失败，状态码: {response.status_code}")
                    return False
        except requests.exceptions.RequestException as e:
            print(f"请求错误: {e}")
            return False


def main(arg1: str) -> dict:
    agent_stream_response = AgentStreamResponse(arg1)
    result = agent_stream_response.get_stream_data()
    return {
        "result": result,
    }

注意修改变量：API_HOST ，API_KEY，AGENT_ID

发布应用，效果如下：

执行代码，会出现超时：Run failed: error: timeout

解决方法，请参考链接：https://www.cnblogs.com/xiao987334176/p/18816719