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117 lines
4.2 KiB
Python
117 lines
4.2 KiB
Python
2 months ago
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from sqlalchemy import inspect
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from sqlalchemy import Integer
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from ... import create_engine
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from ... import exc
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from ...schema import Column
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from ...schema import DropConstraint
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from ...schema import ForeignKeyConstraint
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from ...schema import MetaData
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from ...schema import Table
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from ...testing.provision import create_db
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from ...testing.provision import drop_all_schema_objects_pre_tables
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from ...testing.provision import drop_db
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from ...testing.provision import get_temp_table_name
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from ...testing.provision import log
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from ...testing.provision import run_reap_dbs
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from ...testing.provision import temp_table_keyword_args
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@create_db.for_db("mssql")
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def _mssql_create_db(cfg, eng, ident):
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with eng.connect().execution_options(isolation_level="AUTOCOMMIT") as conn:
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conn.exec_driver_sql("create database %s" % ident)
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conn.exec_driver_sql(
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"ALTER DATABASE %s SET ALLOW_SNAPSHOT_ISOLATION ON" % ident
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)
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conn.exec_driver_sql(
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"ALTER DATABASE %s SET READ_COMMITTED_SNAPSHOT ON" % ident
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)
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conn.exec_driver_sql("use %s" % ident)
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conn.exec_driver_sql("create schema test_schema")
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conn.exec_driver_sql("create schema test_schema_2")
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@drop_db.for_db("mssql")
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def _mssql_drop_db(cfg, eng, ident):
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with eng.connect().execution_options(isolation_level="AUTOCOMMIT") as conn:
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_mssql_drop_ignore(conn, ident)
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def _mssql_drop_ignore(conn, ident):
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try:
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# typically when this happens, we can't KILL the session anyway,
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# so let the cleanup process drop the DBs
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# for row in conn.exec_driver_sql(
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# "select session_id from sys.dm_exec_sessions "
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# "where database_id=db_id('%s')" % ident):
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# log.info("killing SQL server session %s", row['session_id'])
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# conn.exec_driver_sql("kill %s" % row['session_id'])
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conn.exec_driver_sql("drop database %s" % ident)
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log.info("Reaped db: %s", ident)
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return True
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except exc.DatabaseError as err:
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log.warning("couldn't drop db: %s", err)
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return False
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@run_reap_dbs.for_db("mssql")
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def _reap_mssql_dbs(url, idents):
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log.info("db reaper connecting to %r", url)
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eng = create_engine(url)
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with eng.connect().execution_options(isolation_level="AUTOCOMMIT") as conn:
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log.info("identifiers in file: %s", ", ".join(idents))
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to_reap = conn.exec_driver_sql(
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"select d.name from sys.databases as d where name "
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"like 'TEST_%' and not exists (select session_id "
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"from sys.dm_exec_sessions "
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"where database_id=d.database_id)"
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)
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all_names = {dbname.lower() for (dbname,) in to_reap}
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to_drop = set()
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for name in all_names:
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if name in idents:
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to_drop.add(name)
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dropped = total = 0
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for total, dbname in enumerate(to_drop, 1):
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if _mssql_drop_ignore(conn, dbname):
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dropped += 1
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log.info(
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"Dropped %d out of %d stale databases detected", dropped, total
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)
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@temp_table_keyword_args.for_db("mssql")
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def _mssql_temp_table_keyword_args(cfg, eng):
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return {}
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@get_temp_table_name.for_db("mssql")
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def _mssql_get_temp_table_name(cfg, eng, base_name):
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return "##" + base_name
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@drop_all_schema_objects_pre_tables.for_db("mssql")
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def drop_all_schema_objects_pre_tables(cfg, eng):
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with eng.connect().execution_options(isolation_level="AUTOCOMMIT") as conn:
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inspector = inspect(conn)
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for schema in (None, "dbo", cfg.test_schema, cfg.test_schema_2):
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for tname in inspector.get_table_names(schema=schema):
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tb = Table(
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tname,
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MetaData(),
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Column("x", Integer),
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Column("y", Integer),
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schema=schema,
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)
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for fk in inspect(conn).get_foreign_keys(tname, schema=schema):
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conn.execute(
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DropConstraint(
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ForeignKeyConstraint(
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[tb.c.x], [tb.c.y], name=fk["name"]
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)
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)
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)
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