add migrations and switch to sqlalchemy

cef_3M/sql.py

@@ -1,52 +1,14 @@
-import pymysql
-import config
-from typing import Tuple
+from sqlalchemy import create_engine
+from sqlalchemy.orm import sessionmaker
+from .sql_generated import *
+import configparser
 
-pymysql.install_as_MySQLdb()
+alembic = configparser.ConfigParser()
+alembic.read("alembic.ini")
 
-import MySQLdb as maraidb
+engine = create_engine(
+    alembic.get("alembic", "sqlalchemy.url")
+)
 
-DB: pymysql = maraidb.connect(user=config.MARIADB_USER, password=config.MARIADB_PASSWORD, db=config.MARIADB_DB, autocommit=True)
-DB.autocommit(True)
+SessionMaker = sessionmaker(autocommit=False, autoflush=False, bind=engine)
 
-def reconnect(f):
-    def wrap(*args, **kwargs):
-        DB.ping()
-        return f(*args, **kwargs)
-    return wrap
-
-@reconnect
-def SqlExecute(query, *args):
-    cursor = DB.cursor(pymysql.cursors.DictCursor)
-    cursor.execute(query, args)
-    cursor.close()
-    return cursor.lastrowid
-
-@reconnect
-def SqlExecuteFetchOne(query, *args):
-    cursor = DB.cursor(pymysql.cursors.DictCursor)
-    cursor.execute(query, args)
-    row = cursor.fetchone()
-    cursor.close()
-    return row
-
-@reconnect
-def MultipleSqlExecuteFetchOne(*queries: Tuple[str, tuple]):
-    cursor = DB.cursor(pymysql.cursors.DictCursor)
-    ret = []
-    for query, args in queries:
-        cursor.execute(query, args)
-        ret.append(cursor.fetchone())
-    cursor.close()
-    return ret
-
-@reconnect
-def SqlExecuteFetchAll(query, *args):
-    cursor = DB.cursor(pymysql.cursors.DictCursor)
-    cursor.execute(query, args)
-    rows = cursor.fetchall()
-    cursor.close()
-    return rows
-
-
-CACHE = {}