airflow sqlite 源码
airflow sqlite 代码
文件路径：/airflow/providers/sqlite/hooks/sqlite.py
#
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
from __future__ import annotations
import sqlite3
from airflow.providers.common.sql.hooks.sql import DbApiHook
class SqliteHook(DbApiHook):
"""Interact with SQLite."""
conn_name_attr = 'sqlite_conn_id'
default_conn_name = 'sqlite_default'
conn_type = 'sqlite'
hook_name = 'Sqlite'
placeholder = '?'
def get_conn(self) -> sqlite3.dbapi2.Connection:
"""Returns a sqlite connection object"""
conn_id = getattr(self, self.conn_name_attr)
airflow_conn = self.get_connection(conn_id)
conn = sqlite3.connect(airflow_conn.host)
return conn
def get_uri(self) -> str:
"""Override DbApiHook get_uri method for get_sqlalchemy_engine()"""
conn_id = getattr(self, self.conn_name_attr)
airflow_conn = self.get_connection(conn_id)
return f"sqlite:///{airflow_conn.host}"
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