--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libervia/backend/memory/migration/env.py	Fri Jun 02 11:49:51 2023 +0200
@@ -0,0 +1,93 @@
+import asyncio
+from logging.config import fileConfig
+from sqlalchemy import pool
+from sqlalchemy.ext.asyncio import create_async_engine
+from alembic import context
+from libervia.backend.memory import sqla_config
+from libervia.backend.memory.sqla_mapping import Base
+
+# this is the Alembic Config object, which provides
+# access to the values within the .ini file in use.
+config = context.config
+
+# Interpret the config file for Python logging.
+# This line sets up loggers basically.
+fileConfig(config.config_file_name)
+
+# add your model's MetaData object here
+# for 'autogenerate' support
+# from myapp import mymodel
+# target_metadata = mymodel.Base.metadata
+target_metadata = Base.metadata
+
+# other values from the config, defined by the needs of env.py,
+# can be acquired:
+# my_important_option = config.get_main_option("my_important_option")
+# ... etc.
+
+
+def run_migrations_offline():
+    """Run migrations in 'offline' mode.
+
+    This configures the context with just a URL
+    and not an Engine, though an Engine is acceptable
+    here as well.  By skipping the Engine creation
+    we don't even need a DBAPI to be available.
+
+    Calls to context.execute() here emit the given string to the
+    script output.
+
+    """
+    db_config = sqla_config.get_db_config()
+    context.configure(
+        url=db_config["url"],
+        target_metadata=target_metadata,
+        literal_binds=True,
+        dialect_opts={"paramstyle": "named"},
+    )
+
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+def include_name(name, type_, parent_names):
+    if type_ == "table":
+        if name.startswith("pubsub_items_fts"):
+            return False
+    return True
+
+
+def do_run_migrations(connection):
+    context.configure(
+        connection=connection,
+        target_metadata=target_metadata,
+        render_as_batch=True,
+        include_name=include_name
+    )
+
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+async def run_migrations_online():
+    """Run migrations in 'online' mode.
+
+    In this scenario we need to create an Engine
+    and associate a connection with the context.
+
+    """
+    db_config = sqla_config.get_db_config()
+    engine = create_async_engine(
+        db_config["url"],
+        poolclass=pool.NullPool,
+        future=True,
+    )
+
+    async with engine.connect() as connection:
+        await connection.run_sync(do_run_migrations)
+
+
+if context.is_offline_mode():
+    run_migrations_offline()
+else:
+    asyncio.run(run_migrations_online())