210 lines
6.1 KiB
Python
210 lines
6.1 KiB
Python
#!/usr/bin/env python3
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import sys
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#import pymysql.cursors
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#pymysql.install_as_MySQLdb
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#import sqlalchemy.pool as pool
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from sqlalchemy import create_engine
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import traceback
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#mypool=None
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#engine = create_engine('sqlite:///:memory:', echo=True)
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engine=None
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class SqlClass:
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cursors_connect=None
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disable_pool=False
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pymysql_install=False
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pool_size=15
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def __init__(self, connection):
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self.max_overflow=-1
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self.error_connection=""
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# Data of connection
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self.connection=connection
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# Sql connection
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self.conn=None
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self.connected=False
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self.pool_recycle=3600
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self.connect()
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def connect(self):
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global engine
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if not SqlClass.disable_pool:
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if not engine:
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try:
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if self.connection['db_type']=='pymysql':
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import pymysql.cursors
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SqlClass.cursors_connect=pymysql.cursors.DictCursor
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else:
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import MySQLdb.cursors
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SqlClass.cursors_connect=MySQLdb.cursors.DictCursor
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engine=create_engine("mysql+%s://%s:%s@%s/%s?charset=utf8mb4" % (self.connection['db_type'], self.connection['user'], self.connection['password'], self.connection['host'], self.connection['db']), pool_recycle=self.pool_recycle, echo_pool=True, pool_size=self.pool_size, pool_pre_ping=True)
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except:
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e = sys.exc_info()[0]
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v = sys.exc_info()[1]
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self.error_connection="Error in connection: %s %s" % (e, v)
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#self.conn.close()
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raise NameError(self.error_connection)
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self.conn=engine.raw_connection()
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#self.conn.ping(True)
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else:
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if self.connection['db_type']=='pymysql':
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import pymysql.cursors
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if not SqlClass.pymysql_install:
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pymysql.install_as_MySQLdb
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SqlClass.pymysql_install=True
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self.conn=pymysql.connect(self.connection['host'],
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user=self.connection['user'],
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passwd=self.connection['password'],
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db=self.connection['db'],
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charset='utf8mb4',
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cursorclass=pymysql.cursors.DictCursor)
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else:
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import MySQLdb.cursors
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self.conn=MySQLdb.connect(self.connection['host'],
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user=self.connection['user'],
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passwd=self.connection['password'],
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db=self.connection['db'],
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charset='utf8mb4',
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cursorclass=MySQLdb.cursors.DictCursor)
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pass
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"""
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if self.conn==None:
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try:
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def getconn():
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return pymysql.connect(self.connection['host'],
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user=self.connection['user'],
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passwd=self.connection['password'],
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db=self.connection['db'],
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charset='utf8mb4',
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cursorclass=pymysql.cursors.DictCursor)
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if mypool==None:
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mypool=pool.QueuePool(getconn, max_overflow=self.max_overflow, pool_size=self.pool_size, recycle=self.pool_recycle, use_threadlocal=True)
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self.conn=mypool.connect()
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self.conn.ping(True)
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self.connected=True
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except:
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e = sys.exc_info()[0]
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v = sys.exc_info()[1]
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self.error_connection="Error in connection: %s %s" % (e, v)
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self.conn.close()
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raise NameError(self.error_connection)
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"""
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#Make def query more simple if not debugging.
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def query(self, sql_query, arguments=[], name_connection="default"):
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cursor=self.conn.cursor(SqlClass.cursors_connect)
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try:
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cursor.execute(sql_query, arguments)
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self.conn.commit()
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return cursor
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except:
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e = sys.exc_info()[0]
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v = sys.exc_info()[1]
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if hasattr(cursor, '_last_executed'):
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sql_query=cursor._last_executed
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self.error_connection="Error in query ||%s||Values: %s" % (sql_query, str(arguments))
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self.conn.close()
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#return False
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raise NameError(self.error_connection)
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#self.connect()
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#if fetch_type=="ASSOC":
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#fetch_type=MySQLdb.cursors.DictCursor
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#with self.conn.cursor(MySQLdb.cursors.DictCursor) as cursor:
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"""
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cursor=self.conn.cursor(pymysql.cursors.DictCursor)
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try:
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cursor.execute(sql_query, arguments)
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self.conn.commit()
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return cursor
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except:
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e = sys.exc_info()[0]
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v = sys.exc_info()[1]
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if hasattr(cursor, '_last_executed'):
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sql_query=cursor._last_executed
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#, traceback.format_exc()
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self.error_connection="Error in query ||%s||Values: %s" % (sql_query, str(arguments))
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#return False
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raise NameError(self.error_connection)
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"""
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#Fetcho row return dictionary if is defined in query.
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#def fetch(self, cursor):
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#return cursor.fetchone()
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def __del__(self):
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if self.conn:
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self.conn.close()
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def close(self, name_connection="default"):
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if self.conn:
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self.conn.close()
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self.conn=None
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pass
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