sqlbot_agent/main_service.py

import copy
import logging
from functools import wraps
import util.utils
from logging_config import LOGGING_CONFIG
from service.cus_vanna_srevice import CustomVanna, QdrantClient, TTLCacheWrapper
from decouple import config
import flask
from util import load_ddl_doc
from flask import Flask, Response, jsonify, request


logger = logging.getLogger(__name__)
def connect_database(vn):
    db_type = config('DATA_SOURCE_TYPE', default='sqlite')
    if db_type == 'sqlite':
        vn.connect_to_sqlite(config('SQLITE_DATABASE_URL', default=''))
    elif db_type == 'mysql':
        vn.connect_to_mysql(host=config('MYSQL_DATABASE_HOST', default=''),
                            port=int(config('MYSQL_DATABASE_PORT', default=3306)),
                            user=config('MYSQL_DATABASE_USER', default=''),
                            password=config('MYSQL_DATABASE_PASSWORD', default=''),
                            database=config('MYSQL_DATABASE_DBNAME', default=''))
    elif db_type == 'dameng':
        # 待补充
        vn.connect_to_dameng(
            host=config('DAMENG_DATABASE_HOST', default=''),
            port=config('DAMENG_DATABASE_PORT', default=3306),
            user=config('DAMENG_DATABASE_USER', default=''),
            password=config('DAMENG_DATABASE_PASSWORD', default=''),
        )
    else:
        pass


def load_train_data_ddl(vn: CustomVanna):
    vn.train()


def create_vana():
    logger.info("----------------create vana ---------")
    q_client = QdrantClient(":memory:") if config('QDRANT_TYPE', default='memory') == 'memory' else QdrantClient(
        url=config('QDRANT_DB_HOST', default=''), port=config('QDRANT_DB_PORT', default=6333))
    vn = CustomVanna(
        vector_store_config={"client": q_client},
        llm_config={
            "api_key": config('CHAT_MODEL_API_KEY', default=''),
            "api_base": config('CHAT_MODEL_BASE_URL', default=''),
            "model": config('CHAT_MODEL_NAME', default=''),
            'temperature':config('CHAT_MODEL_TEMPERATURE', default=0.7, cast=float),
            'max_tokens':config('CHAT_MODEL_MAX_TOKEN', default=5000),
        },
    )

    return vn


def init_vn(vn):
    logger.info("--------------init vana-----connect to datasouce db----")
    connect_database(vn)

    if config('IS_FIRST_LOAD', default=False, cast=bool):
        load_ddl_doc.add_ddl(vn)
        load_ddl_doc.add_documentation(vn)
        load_train_data_ddl(vn)
    return vn


from vanna.flask import VannaFlaskApp
vn = create_vana()
app = VannaFlaskApp(vn,chart=False)
app.cache = TTLCacheWrapper(app.cache, ttl = config('TTL_CACHE', cast=int,default=60*60))
init_vn(vn)
cache = app.cache
@app.flask_app.route("/yj_sqlbot/api/v0/generate_sql_2", methods=["GET"])
def generate_sql_2():
    """
    Generate SQL from a question
    ---
    parameters:
      - name: user
        in: query
      - name: question
        in: query
        type: string
        required: true
    responses:
      200:
        schema:
          type: object
          properties:
            type:
              type: string
              default: sql
            id:
              type: string
            text:
              type: string
    """
    logger.info("Start to generate sql in main")
    question = flask.request.args.get("question")

    if question is None:
        return jsonify({"type": "error", "error": "No question provided"})
    try:
        id = cache.generate_id(question=question)
        user_id = request.args.get("user_id")
        logger.info(f"Generate sql for {question}")
        data = vn.generate_sql_2(question=question, cache=cache, user_id=user_id)
        logger.info("Generate sql result is {0}".format(data))
        data['id'] = id
        sql = data["resp"]["sql"]
        logger.info("generate sql is : "+ sql)
        cache.set(id=id, field="question", value=question)
        cache.set(id=id, field="sql", value=sql)
        data["type"]="success"
        return jsonify(data)
    except Exception as e:
        logger.error(f"generate sql failed:{e}")
        return jsonify({"type": "error", "error": str(e)})

def session_save(func):
    @wraps(func)
    def wrapper(*args, **kwargs):
        id=request.args.get("id")
        user_id = request.args.get("user_id")
        logger.info(f"   id: {id},user_id: {user_id}")
        result = func(*args, **kwargs)

        datas=[]
        session_len = int(config("SESSION_LENGTH", default=2))
        if cache.exists(id=user_id, field="data"):
            datas = copy.deepcopy(cache.get(id=user_id, field="data"))
        data = {
            "id": id,
            "question":cache.get(id=id, field="question"),
            "sql":cache.get(id=id, field="sql")
        }
        datas.append(data)
        logger.info("datas is {0}".format(datas))
        if len(datas) > session_len and session_len > 0:
            datas=datas[-session_len:]
        # 删除id对应的所有缓存值,因为已经run_sql完毕，改用user_id保存为上下文
        cache.delete(id=id, field="question")
        cache.set(id=user_id, field="data", value=copy.deepcopy(datas))
        logger.info(f" user data {cache.get(user_id, field='data')}")
        return result

    return wrapper



@app.flask_app.route("/yj_sqlbot/api/v0/run_sql_2", methods=["GET"])
@session_save
@app.requires_cache(["sql"])
def run_sql_2(id: str, sql: str):
    """
    Run SQL
    ---
    parameters:
      - name: user_id
        in: query
        required: true
      - name: id
        in: query|body
        type: string
        required: true
      - name: page_size
        in: query
      -name: page_num
        in: query
    responses:
      200:
        schema:
          type: object
          properties:
            type:
              type: string
              default: df
            id:
              type: string
            df:
              type: object
            should_generate_chart:
              type: boolean
    """
    logger.info("Start to run sql in main")
    try:
        if not vn.run_sql_is_set:
            return jsonify(
                {
                    "type": "error",
                    "error": "Please connect to a database using vn.connect_to_... in order to run SQL queries.",
                }
            )

        # count_sql = f"SELECT COUNT(*) AS total_count FROM ({sql}) AS subquery"
        # df_count = vn.run_sql(count_sql)
        # print(df_count,"is type",type(df_count))
        # total_count = df_count.to_dict(orient="records")[0]["total_count"]
        # logger.info("Total count is {0}".format(total_count))
        df = vn.run_sql(sql=sql)
        result = df.to_dict(orient='records')
        logger.info("df ---------------{0}   {1}".format(result,type(result)))
        return jsonify(
            {
                "type": "success",
                "id": id,
                "df": result,
            }
        )

    except Exception as e:
        logger.error(f"run sql failed:{e}")
        return jsonify({"type": "sql_error", "error": str(e)})


@app.flask_app.route("/yj_sqlbot/api/v0/verify", methods=["GET"])
def verify_user():
    try:
        id = request.args.get("user_id")
        users = config('ALLOWED_USERS', default='')
        users = users.split(',')
        logger.info(f"allowed users {users}")
        for user in users:
            if user == id:
                return jsonify({"type": "success", "verify": True})
            else:
                return jsonify({"type": "success", "verify": False})
    except Exception as e:
        logger.error(f"verify user failed:{e}")
        return jsonify({"type": "error", "error": str(e)})



if __name__ == '__main__':

    app.run(host='0.0.0.0', port=8084, debug=False)