Update 2025-04-13_16:25:39

venv/lib/python3.11/site-packages/sqlalchemy/dialects/mysql/provision.py

@@ -0,0 +1,114 @@
+# dialects/mysql/provision.py
+# Copyright (C) 2005-2025 the SQLAlchemy authors and contributors
+# <see AUTHORS file>
+#
+# This module is part of SQLAlchemy and is released under
+# the MIT License: https://www.opensource.org/licenses/mit-license.php
+# mypy: ignore-errors
+
+from ... import exc
+from ...testing.provision import configure_follower
+from ...testing.provision import create_db
+from ...testing.provision import drop_db
+from ...testing.provision import generate_driver_url
+from ...testing.provision import temp_table_keyword_args
+from ...testing.provision import upsert
+
+
+@generate_driver_url.for_db("mysql", "mariadb")
+def generate_driver_url(url, driver, query_str):
+    backend = url.get_backend_name()
+
+    # NOTE: at the moment, tests are running mariadbconnector
+    # against both mariadb and mysql backends.   if we want this to be
+    # limited, do the decision making here to reject a "mysql+mariadbconnector"
+    # URL.  Optionally also re-enable the module level
+    # MySQLDialect_mariadbconnector.is_mysql flag as well, which must include
+    # a unit and/or functional test.
+
+    # all the Jenkins tests have been running mysqlclient Python library
+    # built against mariadb client drivers for years against all MySQL /
+    # MariaDB versions going back to MySQL 5.6, currently they can talk
+    # to MySQL databases without problems.
+
+    if backend == "mysql":
+        dialect_cls = url.get_dialect()
+        if dialect_cls._is_mariadb_from_url(url):
+            backend = "mariadb"
+
+    new_url = url.set(
+        drivername="%s+%s" % (backend, driver)
+    ).update_query_string(query_str)
+
+    if driver == "mariadbconnector":
+        new_url = new_url.difference_update_query(["charset"])
+    elif driver == "mysqlconnector":
+        new_url = new_url.update_query_pairs(
+            [("collation", "utf8mb4_general_ci")]
+        )
+
+    try:
+        new_url.get_dialect()
+    except exc.NoSuchModuleError:
+        return None
+    else:
+        return new_url
+
+
+@create_db.for_db("mysql", "mariadb")
+def _mysql_create_db(cfg, eng, ident):
+    with eng.begin() as conn:
+        try:
+            _mysql_drop_db(cfg, conn, ident)
+        except Exception:
+            pass
+
+    with eng.begin() as conn:
+        conn.exec_driver_sql(
+            "CREATE DATABASE %s CHARACTER SET utf8mb4" % ident
+        )
+        conn.exec_driver_sql(
+            "CREATE DATABASE %s_test_schema CHARACTER SET utf8mb4" % ident
+        )
+        conn.exec_driver_sql(
+            "CREATE DATABASE %s_test_schema_2 CHARACTER SET utf8mb4" % ident
+        )
+
+
+@configure_follower.for_db("mysql", "mariadb")
+def _mysql_configure_follower(config, ident):
+    config.test_schema = "%s_test_schema" % ident
+    config.test_schema_2 = "%s_test_schema_2" % ident
+
+
+@drop_db.for_db("mysql", "mariadb")
+def _mysql_drop_db(cfg, eng, ident):
+    with eng.begin() as conn:
+        conn.exec_driver_sql("DROP DATABASE %s_test_schema" % ident)
+        conn.exec_driver_sql("DROP DATABASE %s_test_schema_2" % ident)
+        conn.exec_driver_sql("DROP DATABASE %s" % ident)
+
+
+@temp_table_keyword_args.for_db("mysql", "mariadb")
+def _mysql_temp_table_keyword_args(cfg, eng):
+    return {"prefixes": ["TEMPORARY"]}
+
+
+@upsert.for_db("mariadb")
+def _upsert(
+    cfg, table, returning, *, set_lambda=None, sort_by_parameter_order=False
+):
+    from sqlalchemy.dialects.mysql import insert
+
+    stmt = insert(table)
+
+    if set_lambda:
+        stmt = stmt.on_duplicate_key_update(**set_lambda(stmt.inserted))
+    else:
+        pk1 = table.primary_key.c[0]
+        stmt = stmt.on_duplicate_key_update({pk1.key: pk1})
+
+    stmt = stmt.returning(
+        *returning, sort_by_parameter_order=sort_by_parameter_order
+    )
+    return stmt