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wecom_it_smart_desk/backend/alembic/env.py
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# =============================================================================
# Alembic migration environment
# Handles both sync (alembic CLI) and async (app runtime) database URLs
# =============================================================================
from logging.config import fileConfig
from sqlalchemy import engine_from_config, pool
from alembic import context
from app.config import settings
from app.database import Base
import app.models # noqa: F401
config = context.config
# Convert async URL to sync for alembic CLI operations
# aiosqlite -> sqlite, asyncpg -> psycopg2
db_url = settings.database_url
db_url = db_url.replace("+aiosqlite", "").replace("+asyncpg", "")
config.set_main_option("sqlalchemy.url", db_url)
if config.config_file_name is not None:
fileConfig(config.config_file_name)
target_metadata = Base.metadata
def run_migrations_offline() -> None:
"""Generate SQL scripts without connecting to the database."""
url = config.get_main_option("sqlalchemy.url")
context.configure(
url=url,
target_metadata=target_metadata,
literal_binds=True,
dialect_opts={"paramstyle": "named"},
)
with context.begin_transaction():
context.run_migrations()
def run_migrations_online() -> None:
"""Connect to the database and run migrations."""
connectable = engine_from_config(
config.get_section(config.config_ini_section, {}),
prefix="sqlalchemy.",
poolclass=pool.NullPool,
)
with connectable.connect() as connection:
context.configure(
connection=connection,
target_metadata=target_metadata,
)
with context.begin_transaction():
context.run_migrations()
if context.is_offline_mode():
run_migrations_offline()
else:
run_migrations_online()