python-fastapi-mm-zhcs-yj-api/database.py

# -*- coding: utf-8 -*-
import sqlalchemy
from sqlalchemy import create_engine
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import sessionmaker
from config import settings
from contextlib import contextmanager

mysql_dwd_config = {
    'drivername': 'mysql+pymysql',
    'username': settings.MYSQL_USER,
    'password': settings.MYSQL_PASSWORD,
    'host': settings.MYSQL_SERVER,
    'port':settings.MYSQL_PORT,
    'database': settings.MYSQL_DB_NAME
}

mysql_dwd_config_sharedb = {
    'drivername': 'mysql+pymysql',
    'username': settings.MYSQL_USER,
    'password': settings.MYSQL_PASSWORD,
    'host': settings.MYSQL_SERVER,
    'port':settings.MYSQL_PORT,
    'database': 'sharedb'
}

if sqlalchemy.__version__ >= '1.4':
    mysql_engine_url = sqlalchemy.engine.URL.create(**mysql_dwd_config)
    mysql_engine_url = mysql_engine_url.update_query_dict({'charset': 'utf8mb4'})

    mysql_engine_url_sharedb = sqlalchemy.engine.URL.create(**mysql_dwd_config_sharedb)
    mysql_engine_url_sharedb = mysql_engine_url_sharedb.update_query_dict({'charset': 'utf8mb4'})
else:
    mysql_engine_url = '{drivername}://{username}:{password}@{host}:{port}/{database}?charset=utf8mb4'.format(**mysql_dwd_config)

    mysql_engine_url_sharedb = '{drivername}://{username}:{password}@{host}:{port}/{database}?charset=utf8mb4'.format(**mysql_dwd_config_sharedb)

engine = create_engine(mysql_engine_url, echo=False, pool_size=10, pool_recycle=360, pool_pre_ping=True)
SessionLocal = sessionmaker(bind=engine)

engine_sharedb = create_engine(mysql_engine_url_sharedb, echo=False, pool_size=3, pool_recycle=360, pool_pre_ping=True)
SessionLocalShareDb = sessionmaker(bind=engine_sharedb)

Base = declarative_base()
def get_db_share():
    try:
        db = SessionLocalShareDb()
        yield db
    finally:
        db.close()
# Dependency
def get_db():
    try:
        db = SessionLocal()
        yield db
    finally:
        db.close()

# 适用scheduler
@contextmanager
def get_local_db():
    try:
        db = SessionLocal()
        yield db
    finally:
        db.close()

@contextmanager
def get_share_db():
    try:
        db = SessionLocalShareDb()
        yield db
    finally:
        db.close()


# def get_db_local():
#    return SessionLocal()



# from database import engine
# from models.geojson_base import *
# from shapely.geometry import shape
# import json
# import pymysql
# # db = get_db_local()
# conn = pymysql.connect(host=settings.MYSQL_SERVER,
#                                user=settings.MYSQL_USER,
#                                password=settings.MYSQL_PASSWORD,
#                                database=settings.MYSQL_DB_NAME,
#                                port=settings.MYSQL_PORT,
#                                charset='utf8mb4')
# cur = conn.cursor()
# with open('/home/python3/zj_geojson.json', 'r', encoding='utf-8') as file:
#     geojson = json.load(file)
# features = geojson.get('features', [])
# for feature in features:
#     # print(feature)
#     name = feature['properties'].get('NAME', '')
#     geom = shape(feature['geometry']).__geo_interface__  # 将Shapely对象转换为GeoJSON
#     # print(geom)
#     properties = json.dumps(feature['properties'], ensure_ascii=False)
#     pac = feature['properties'].get('PAC', '')
#     sql = """
#                 INSERT INTO tp_geojson_data_zj (name, geometry, properties,pac)
#                 VALUES (%s, ST_GeomFromGeoJSON(%s), %s,%s)
#                 """
#     # 执行插入操作
#     cur.execute(sql, (name, json.dumps(geom), properties,pac))
#     conn.commit()
    # 提交事务

    # break
# 提交事务

# db.commit()
# # 关闭会话
# db.close()

#from models.oneshare_base import Base
#from models.knowledge_base import Base
#
# #使用Base的metadata和engine来创建所有表
#Base.metadata.create_all(bind=engine)