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refactor: rewrite migration procedure as loop

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This commit is contained in:
Jann Stute
2026-07-06 16:29:46 +02:00
parent e383cab402
commit cc78c1abb9
1 changed files with 20 additions and 67 deletions
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src/tagstudio/core/library/alchemy/library.py
+20 -67
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@@ -569,73 +569,26 @@ class Library:
# TODO: every migration step should either complete sucessfully or be aborted fully
# - the migration steps seem to have try-except cases to catch a previously failed
# migration
# TODO: the migration and the version update should have fate-sharing
if loaded_db_version < 7:
# changes: value_type, tags
self.__apply_db7_migration(session)
loaded_db_version = 7
self.set_version(session, DB_VERSION_CURRENT_KEY, 7)
session.commit()
if loaded_db_version < 8:
# changes: tag_colors
self.__apply_db8_migration(session)
loaded_db_version = 8
self.set_version(session, DB_VERSION_CURRENT_KEY, 8)
session.commit()
if loaded_db_version < 9:
# changes: entries
self.__apply_db9_migration(session)
loaded_db_version = 9
self.set_version(session, DB_VERSION_CURRENT_KEY, 9)
session.commit()
if loaded_db_version < 100:
# changes: tag_parents
self.__apply_db100_migration(session)
loaded_db_version = 100
self.set_version(session, DB_VERSION_CURRENT_KEY, 100)
session.commit()
if loaded_db_version < 101:
# changes: versions
self.__apply_db101_migration(session)
loaded_db_version = 101
self.set_version(session, DB_VERSION_CURRENT_KEY, 101)
session.commit()
if loaded_db_version < 102:
# changes: tag_parents
self.__apply_db102_migration(session)
loaded_db_version = 102
self.set_version(session, DB_VERSION_CURRENT_KEY, 102)
session.commit()
if loaded_db_version < 103:
# changes: tags
self.__apply_db103_migration(session)
loaded_db_version = 103
self.set_version(session, DB_VERSION_CURRENT_KEY, 103)
session.commit()
if loaded_db_version < 104:
# changes: deletes preferences
self.__apply_db104_migration(session, library_dir)
loaded_db_version = 104
self.set_version(session, DB_VERSION_CURRENT_KEY, 104)
session.commit()
if loaded_db_version < 200:
# changes: field tables
self.__apply_db200_migration(session)
loaded_db_version = 200
self.set_version(session, DB_VERSION_CURRENT_KEY, 200)
session.commit()
if loaded_db_version < 201 and initial_db_version < 200:
# changes: field tables
self.__apply_db201_migration(session)
loaded_db_version = 201
self.set_version(session, DB_VERSION_CURRENT_KEY, 201)
session.commit()
if loaded_db_version < 202:
# changes: tag_parents
self.__apply_db202_migration(session)
loaded_db_version = 202
self.set_version(session, DB_VERSION_CURRENT_KEY, 202)
session.commit()
# (migration_method, db_version, initial_db_version)
migrations = [
(self.__apply_db7_migration, 7, None), # changes: value_type, tags
(self.__apply_db8_migration, 8, None), # changes: tag_colors
(self.__apply_db9_migration, 9, None), # changes: entries
(self.__apply_db100_migration, 100, None), # changes: tag_parents
(self.__apply_db101_migration, 101, None), # changes: versions
(self.__apply_db102_migration, 102, None), # changes: tag_parents
(self.__apply_db103_migration, 103, None), # changes: tags
(self.__apply_db104_migration, 104, None), # changes: deletes preferences
(self.__apply_db200_migration, 200, None), # changes: field tables
(self.__apply_db201_migration, 201, 200), # changes: field tables
(self.__apply_db202_migration, 202, None), # changes: tag_parents
]
for migration, v, iv in migrations:
if loaded_db_version < v and (iv is None or initial_db_version < iv):
migration(session)
loaded_db_version = v
self.set_version(session, DB_VERSION_CURRENT_KEY, v)
session.commit()
assert loaded_db_version == DB_VERSION, (
"Ran all migrations, but the DB is still not on the newest version"