Update 2025-04-24_11:44:19
This commit is contained in:
oib
@ -0,0 +1,220 @@
|
||||
# dialects/oracle/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 create_engine
|
||||
from ... import exc
|
||||
from ... import inspect
|
||||
from ...engine import url as sa_url
|
||||
from ...testing.provision import configure_follower
|
||||
from ...testing.provision import create_db
|
||||
from ...testing.provision import drop_all_schema_objects_post_tables
|
||||
from ...testing.provision import drop_all_schema_objects_pre_tables
|
||||
from ...testing.provision import drop_db
|
||||
from ...testing.provision import follower_url_from_main
|
||||
from ...testing.provision import log
|
||||
from ...testing.provision import post_configure_engine
|
||||
from ...testing.provision import run_reap_dbs
|
||||
from ...testing.provision import set_default_schema_on_connection
|
||||
from ...testing.provision import stop_test_class_outside_fixtures
|
||||
from ...testing.provision import temp_table_keyword_args
|
||||
from ...testing.provision import update_db_opts
|
||||
|
||||
|
||||
@create_db.for_db("oracle")
|
||||
def _oracle_create_db(cfg, eng, ident):
|
||||
# NOTE: make sure you've run "ALTER DATABASE default tablespace users" or
|
||||
# similar, so that the default tablespace is not "system"; reflection will
|
||||
# fail otherwise
|
||||
with eng.begin() as conn:
|
||||
conn.exec_driver_sql("create user %s identified by xe" % ident)
|
||||
conn.exec_driver_sql("create user %s_ts1 identified by xe" % ident)
|
||||
conn.exec_driver_sql("create user %s_ts2 identified by xe" % ident)
|
||||
conn.exec_driver_sql("grant dba to %s" % (ident,))
|
||||
conn.exec_driver_sql("grant unlimited tablespace to %s" % ident)
|
||||
conn.exec_driver_sql("grant unlimited tablespace to %s_ts1" % ident)
|
||||
conn.exec_driver_sql("grant unlimited tablespace to %s_ts2" % ident)
|
||||
# these are needed to create materialized views
|
||||
conn.exec_driver_sql("grant create table to %s" % ident)
|
||||
conn.exec_driver_sql("grant create table to %s_ts1" % ident)
|
||||
conn.exec_driver_sql("grant create table to %s_ts2" % ident)
|
||||
|
||||
|
||||
@configure_follower.for_db("oracle")
|
||||
def _oracle_configure_follower(config, ident):
|
||||
config.test_schema = "%s_ts1" % ident
|
||||
config.test_schema_2 = "%s_ts2" % ident
|
||||
|
||||
|
||||
def _ora_drop_ignore(conn, dbname):
|
||||
try:
|
||||
conn.exec_driver_sql("drop user %s cascade" % dbname)
|
||||
log.info("Reaped db: %s", dbname)
|
||||
return True
|
||||
except exc.DatabaseError as err:
|
||||
log.warning("couldn't drop db: %s", err)
|
||||
return False
|
||||
|
||||
|
||||
@drop_all_schema_objects_pre_tables.for_db("oracle")
|
||||
def _ora_drop_all_schema_objects_pre_tables(cfg, eng):
|
||||
_purge_recyclebin(eng)
|
||||
_purge_recyclebin(eng, cfg.test_schema)
|
||||
|
||||
|
||||
@drop_all_schema_objects_post_tables.for_db("oracle")
|
||||
def _ora_drop_all_schema_objects_post_tables(cfg, eng):
|
||||
with eng.begin() as conn:
|
||||
for syn in conn.dialect._get_synonyms(conn, None, None, None):
|
||||
conn.exec_driver_sql(f"drop synonym {syn['synonym_name']}")
|
||||
|
||||
for syn in conn.dialect._get_synonyms(
|
||||
conn, cfg.test_schema, None, None
|
||||
):
|
||||
conn.exec_driver_sql(
|
||||
f"drop synonym {cfg.test_schema}.{syn['synonym_name']}"
|
||||
)
|
||||
|
||||
for tmp_table in inspect(conn).get_temp_table_names():
|
||||
conn.exec_driver_sql(f"drop table {tmp_table}")
|
||||
|
||||
|
||||
@drop_db.for_db("oracle")
|
||||
def _oracle_drop_db(cfg, eng, ident):
|
||||
with eng.begin() as conn:
|
||||
# cx_Oracle seems to occasionally leak open connections when a large
|
||||
# suite it run, even if we confirm we have zero references to
|
||||
# connection objects.
|
||||
# while there is a "kill session" command in Oracle Database,
|
||||
# it unfortunately does not release the connection sufficiently.
|
||||
_ora_drop_ignore(conn, ident)
|
||||
_ora_drop_ignore(conn, "%s_ts1" % ident)
|
||||
_ora_drop_ignore(conn, "%s_ts2" % ident)
|
||||
|
||||
|
||||
@stop_test_class_outside_fixtures.for_db("oracle")
|
||||
def _ora_stop_test_class_outside_fixtures(config, db, cls):
|
||||
try:
|
||||
_purge_recyclebin(db)
|
||||
except exc.DatabaseError as err:
|
||||
log.warning("purge recyclebin command failed: %s", err)
|
||||
|
||||
# clear statement cache on all connections that were used
|
||||
# https://github.com/oracle/python-cx_Oracle/issues/519
|
||||
|
||||
for cx_oracle_conn in _all_conns:
|
||||
try:
|
||||
sc = cx_oracle_conn.stmtcachesize
|
||||
except db.dialect.dbapi.InterfaceError:
|
||||
# connection closed
|
||||
pass
|
||||
else:
|
||||
cx_oracle_conn.stmtcachesize = 0
|
||||
cx_oracle_conn.stmtcachesize = sc
|
||||
_all_conns.clear()
|
||||
|
||||
|
||||
def _purge_recyclebin(eng, schema=None):
|
||||
with eng.begin() as conn:
|
||||
if schema is None:
|
||||
# run magic command to get rid of identity sequences
|
||||
# https://floo.bar/2019/11/29/drop-the-underlying-sequence-of-an-identity-column/ # noqa: E501
|
||||
conn.exec_driver_sql("purge recyclebin")
|
||||
else:
|
||||
# per user: https://community.oracle.com/tech/developers/discussion/2255402/how-to-clear-dba-recyclebin-for-a-particular-user # noqa: E501
|
||||
for owner, object_name, type_ in conn.exec_driver_sql(
|
||||
"select owner, object_name,type from "
|
||||
"dba_recyclebin where owner=:schema and type='TABLE'",
|
||||
{"schema": conn.dialect.denormalize_name(schema)},
|
||||
).all():
|
||||
conn.exec_driver_sql(f'purge {type_} {owner}."{object_name}"')
|
||||
|
||||
|
||||
_all_conns = set()
|
||||
|
||||
|
||||
@post_configure_engine.for_db("oracle")
|
||||
def _oracle_post_configure_engine(url, engine, follower_ident):
|
||||
from sqlalchemy import event
|
||||
|
||||
@event.listens_for(engine, "checkout")
|
||||
def checkout(dbapi_con, con_record, con_proxy):
|
||||
_all_conns.add(dbapi_con)
|
||||
|
||||
@event.listens_for(engine, "checkin")
|
||||
def checkin(dbapi_connection, connection_record):
|
||||
# work around cx_Oracle issue:
|
||||
# https://github.com/oracle/python-cx_Oracle/issues/530
|
||||
# invalidate oracle connections that had 2pc set up
|
||||
if "cx_oracle_xid" in connection_record.info:
|
||||
connection_record.invalidate()
|
||||
|
||||
|
||||
@run_reap_dbs.for_db("oracle")
|
||||
def _reap_oracle_dbs(url, idents):
|
||||
log.info("db reaper connecting to %r", url)
|
||||
eng = create_engine(url)
|
||||
with eng.begin() as conn:
|
||||
log.info("identifiers in file: %s", ", ".join(idents))
|
||||
|
||||
to_reap = conn.exec_driver_sql(
|
||||
"select u.username from all_users u where username "
|
||||
"like 'TEST_%' and not exists (select username "
|
||||
"from v$session where username=u.username)"
|
||||
)
|
||||
all_names = {username.lower() for (username,) in to_reap}
|
||||
to_drop = set()
|
||||
for name in all_names:
|
||||
if name.endswith("_ts1") or name.endswith("_ts2"):
|
||||
continue
|
||||
elif name in idents:
|
||||
to_drop.add(name)
|
||||
if "%s_ts1" % name in all_names:
|
||||
to_drop.add("%s_ts1" % name)
|
||||
if "%s_ts2" % name in all_names:
|
||||
to_drop.add("%s_ts2" % name)
|
||||
|
||||
dropped = total = 0
|
||||
for total, username in enumerate(to_drop, 1):
|
||||
if _ora_drop_ignore(conn, username):
|
||||
dropped += 1
|
||||
log.info(
|
||||
"Dropped %d out of %d stale databases detected", dropped, total
|
||||
)
|
||||
|
||||
|
||||
@follower_url_from_main.for_db("oracle")
|
||||
def _oracle_follower_url_from_main(url, ident):
|
||||
url = sa_url.make_url(url)
|
||||
return url.set(username=ident, password="xe")
|
||||
|
||||
|
||||
@temp_table_keyword_args.for_db("oracle")
|
||||
def _oracle_temp_table_keyword_args(cfg, eng):
|
||||
return {
|
||||
"prefixes": ["GLOBAL TEMPORARY"],
|
||||
"oracle_on_commit": "PRESERVE ROWS",
|
||||
}
|
||||
|
||||
|
||||
@set_default_schema_on_connection.for_db("oracle")
|
||||
def _oracle_set_default_schema_on_connection(
|
||||
cfg, dbapi_connection, schema_name
|
||||
):
|
||||
cursor = dbapi_connection.cursor()
|
||||
cursor.execute("ALTER SESSION SET CURRENT_SCHEMA=%s" % schema_name)
|
||||
cursor.close()
|
||||
|
||||
|
||||
@update_db_opts.for_db("oracle")
|
||||
def _update_db_opts(db_url, db_opts, options):
|
||||
"""Set database options (db_opts) for a test database that we created."""
|
||||
if (
|
||||
options.oracledb_thick_mode
|
||||
and sa_url.make_url(db_url).get_driver_name() == "oracledb"
|
||||
):
|
||||
db_opts["thick_mode"] = True
|
||||
Reference in New Issue
Block a user