Source code for airflow.providers.sqlite.hooks.sqlite

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from __future__ import annotations

import sqlite3
from urllib.parse import unquote

from airflow.providers.common.sql.hooks.sql import DbApiHook


[docs]class SqliteHook(DbApiHook): """Interact with SQLite."""
[docs] conn_name_attr = "sqlite_conn_id"
[docs] default_conn_name = "sqlite_default"
[docs] conn_type = "sqlite"
[docs] hook_name = "Sqlite"
def __init__(self, *args, **kwargs): super().__init__(*args, **kwargs) self._placeholder: str = "?"
[docs] def get_conn(self) -> sqlite3.dbapi2.Connection: """Return SQLite connection object.""" sqlalchemy_uri = self.get_uri() # The sqlite3 connection does not use the sqlite scheme. # See https://docs.sqlalchemy.org/en/14/dialects/sqlite.html#uri-connections for details. sqlite_uri = sqlalchemy_uri.replace("sqlite:///", "file:") conn = sqlite3.connect(sqlite_uri, uri=True) return conn
[docs] def get_uri(self) -> str: """Override DbApiHook get_uri method for get_sqlalchemy_engine().""" conn_id = self.get_conn_id() airflow_conn = self.get_connection(conn_id) if airflow_conn.conn_type is None: airflow_conn.conn_type = self.conn_type airflow_uri = unquote(airflow_conn.get_uri()) # For sqlite, there is no schema in the connection URI. So we need to drop the trailing slash. airflow_sqlite_uri = airflow_uri.replace("/?", "?") # The sqlite connection has one more slash for path specification. # See https://docs.sqlalchemy.org/en/14/dialects/sqlite.html#connect-strings for details. sqlalchemy_uri = airflow_sqlite_uri.replace("sqlite://", "sqlite:///") return sqlalchemy_uri

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