mirror of
https://github.com/open-webui/open-webui
synced 2024-11-07 17:19:53 +00:00
111 lines
3.0 KiB
Python
111 lines
3.0 KiB
Python
import os
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import logging
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import json
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from contextlib import contextmanager
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from peewee_migrate import Router
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from apps.webui.internal.wrappers import register_connection
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from typing import Optional, Any
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from typing_extensions import Self
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from sqlalchemy import create_engine, types, Dialect
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from sqlalchemy.ext.declarative import declarative_base
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from sqlalchemy.orm import sessionmaker, scoped_session
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from sqlalchemy.sql.type_api import _T
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from config import SRC_LOG_LEVELS, DATA_DIR, DATABASE_URL, BACKEND_DIR
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log = logging.getLogger(__name__)
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log.setLevel(SRC_LOG_LEVELS["DB"])
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class JSONField(types.TypeDecorator):
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impl = types.Text
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cache_ok = True
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def process_bind_param(self, value: Optional[_T], dialect: Dialect) -> Any:
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return json.dumps(value)
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def process_result_value(self, value: Optional[_T], dialect: Dialect) -> Any:
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if value is not None:
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return json.loads(value)
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def copy(self, **kw: Any) -> Self:
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return JSONField(self.impl.length)
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def db_value(self, value):
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return json.dumps(value)
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def python_value(self, value):
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if value is not None:
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return json.loads(value)
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# Check if the file exists
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if os.path.exists(f"{DATA_DIR}/ollama.db"):
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# Rename the file
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os.rename(f"{DATA_DIR}/ollama.db", f"{DATA_DIR}/webui.db")
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log.info("Database migrated from Ollama-WebUI successfully.")
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else:
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pass
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# Workaround to handle the peewee migration
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# This is required to ensure the peewee migration is handled before the alembic migration
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def handle_peewee_migration(DATABASE_URL):
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try:
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# Replace the postgresql:// with postgres:// and %40 with @ in the DATABASE_URL
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db = register_connection(
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DATABASE_URL.replace("postgresql://", "postgres://").replace("%40", "@")
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)
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migrate_dir = BACKEND_DIR / "apps" / "webui" / "internal" / "migrations"
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router = Router(db, logger=log, migrate_dir=migrate_dir)
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router.run()
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db.close()
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# check if db connection has been closed
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except Exception as e:
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log.error(f"Failed to initialize the database connection: {e}")
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raise
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finally:
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# Properly closing the database connection
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if db and not db.is_closed():
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db.close()
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# Assert if db connection has been closed
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assert db.is_closed(), "Database connection is still open."
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handle_peewee_migration(DATABASE_URL)
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SQLALCHEMY_DATABASE_URL = DATABASE_URL
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if "sqlite" in SQLALCHEMY_DATABASE_URL:
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engine = create_engine(
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SQLALCHEMY_DATABASE_URL, connect_args={"check_same_thread": False}
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)
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else:
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engine = create_engine(SQLALCHEMY_DATABASE_URL, pool_pre_ping=True)
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SessionLocal = sessionmaker(
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autocommit=False, autoflush=False, bind=engine, expire_on_commit=False
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)
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Base = declarative_base()
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Session = scoped_session(SessionLocal)
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# Dependency
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def get_session():
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db = SessionLocal()
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try:
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yield db
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finally:
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db.close()
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get_db = contextmanager(get_session)
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