b9274c27a25a_kuzu_11_migration.py•2.9 kB
"""kuzu-11-migration
Revision ID: b9274c27a25a
Revises: e4ebee1091e7
Create Date: 2025-07-24 17:11:52.174737
"""
import os
from typing import Sequence, Union
from cognee.infrastructure.databases.graph.kuzu.kuzu_migrate import (
kuzu_migration,
read_kuzu_storage_version,
)
import kuzu
# revision identifiers, used by Alembic.
revision: str = "b9274c27a25a"
down_revision: Union[str, None] = "e4ebee1091e7"
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None
def upgrade() -> None:
# This migration is only for multi-user Cognee mode
if os.getenv("ENABLE_BACKEND_ACCESS_CONTROL", "false").lower() == "true":
from cognee.base_config import get_base_config
base_config = get_base_config()
databases_root = os.path.join(base_config.system_root_directory, "databases")
if not os.path.isdir(databases_root):
raise FileNotFoundError(f"Directory not found: {databases_root}")
for current_path, dirnames, _ in os.walk(databases_root):
# If file is kuzu graph database
if ".pkl" in current_path[-4:]:
kuzu_db_version = read_kuzu_storage_version(current_path)
if (
kuzu_db_version == "0.9.0" or kuzu_db_version == "0.8.2"
) and kuzu_db_version != kuzu.__version__:
# Try to migrate kuzu database to latest version
kuzu_migration(
new_db=current_path + "_new",
old_db=current_path,
new_version=kuzu.__version__,
old_version=kuzu_db_version,
overwrite=True,
)
else:
from cognee.infrastructure.databases.graph import get_graph_config
graph_config = get_graph_config()
if graph_config.graph_database_provider.lower() == "kuzu":
if os.path.exists(graph_config.graph_file_path):
kuzu_db_version = read_kuzu_storage_version(graph_config.graph_file_path)
if (
kuzu_db_version == "0.9.0" or kuzu_db_version == "0.8.2"
) and kuzu_db_version != kuzu.__version__:
# Try to migrate kuzu database to latest version
kuzu_migration(
new_db=graph_config.graph_file_path + "_new",
old_db=graph_config.graph_file_path,
new_version=kuzu.__version__,
old_version=kuzu_db_version,
overwrite=True,
)
def downgrade() -> None:
# To downgrade you will have to manually change the backup old kuzu graph databases
# stored in the user folder to its previous name and remove the new kuzu graph
# database that replaced it
pass