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"""
Alembic migrations environment for CX AI Agent
"""
import asyncio
import os
import sys
from logging.config import fileConfig
from sqlalchemy import pool
from sqlalchemy.engine import Connection
from sqlalchemy.ext.asyncio import async_engine_from_config
from alembic import context
# Add parent directory to path
sys.path.insert(0, os.path.dirname(os.path.dirname(__file__)))
# Import models
from mcp.database.models import Base
# Alembic Config object
config = context.config
# Interpret the config file for Python logging
if config.config_file_name is not None:
fileConfig(config.config_file_name)
# Add metadata
target_metadata = Base.metadata
# Get database URL from environment or use default
database_url = os.getenv("DATABASE_URL", "sqlite+aiosqlite:///./data/cx_agent.db")
# Convert postgres:// to postgresql:// for SQLAlchemy
if database_url.startswith("postgres://"):
database_url = database_url.replace("postgres://", "postgresql+asyncpg://", 1)
# Override sqlalchemy.url in alembic config
config.set_main_option("sqlalchemy.url", database_url)
def run_migrations_offline() -> None:
"""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.
"""
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 do_run_migrations(connection: Connection) -> None:
"""Run migrations with connection"""
context.configure(
connection=connection,
target_metadata=target_metadata,
compare_type=True,
compare_server_default=True,
)
with context.begin_transaction():
context.run_migrations()
async def run_async_migrations() -> None:
"""Run migrations in 'online' mode with async engine"""
configuration = config.get_section(config.config_ini_section)
configuration["sqlalchemy.url"] = database_url
connectable = async_engine_from_config(
configuration,
prefix="sqlalchemy.",
poolclass=pool.NullPool,
)
async with connectable.connect() as connection:
await connection.run_sync(do_run_migrations)
await connectable.dispose()
def run_migrations_online() -> None:
"""Run migrations in 'online' mode"""
asyncio.run(run_async_migrations())
if context.is_offline_mode():
run_migrations_offline()
else:
run_migrations_online()
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