feat(db): add generated column for tags in db migration

Author: psychedelicious

invokeai/app/services/shared/sqlite/sqlite_util.py

@@ -19,6 +19,7 @@
 from invokeai.app.services.shared.sqlite_migrator.migrations.migration_14 import build_migration_14
 from invokeai.app.services.shared.sqlite_migrator.migrations.migration_15 import build_migration_15
 from invokeai.app.services.shared.sqlite_migrator.migrations.migration_16 import build_migration_16
+from invokeai.app.services.shared.sqlite_migrator.migrations.migration_17 import build_migration_17
 from invokeai.app.services.shared.sqlite_migrator.sqlite_migrator_impl import SqliteMigrator
 
 
@@ -55,6 +56,7 @@ def init_db(config: InvokeAIAppConfig, logger: Logger, image_files: ImageFileSto
     migrator.register_migration(build_migration_14())
     migrator.register_migration(build_migration_15())
     migrator.register_migration(build_migration_16())
+    migrator.register_migration(build_migration_17())
     migrator.run_migrations()
 
     return db

invokeai/app/services/shared/sqlite_migrator/migrations/migration_17.py

@@ -0,0 +1,35 @@
+import sqlite3
+
+from invokeai.app.services.shared.sqlite_migrator.sqlite_migrator_common import Migration
+
+
+class Migration17Callback:
+    def __call__(self, cursor: sqlite3.Cursor) -> None:
+        self._add_workflows_tags_col(cursor)
+
+    def _add_workflows_tags_col(self, cursor: sqlite3.Cursor) -> None:
+        """
+        - Adds `tags` column to the workflow_library table. It is a generated column that extracts the tags from the
+            workflow JSON.
+        """
+
+        cursor.execute(
+            "ALTER TABLE workflow_library ADD COLUMN tags TEXT GENERATED ALWAYS AS (json_extract(workflow, '$.tags')) VIRTUAL;"
+        )
+
+
+def build_migration_17() -> Migration:
+    """
+    Build the migration from database version 16 to 17.
+
+    This migration does the following:
+        - Adds `tags` column to the workflow_library table. It is a generated column that extracts the tags from the
+            workflow JSON.
+    """
+    migration_17 = Migration(
+        from_version=16,
+        to_version=17,
+        callback=Migration17Callback(),
+    )
+
+    return migration_17