ac-tool/backend/server/db/pool.py
Vadym Samoilenko 8da149b84e Migrate storage from JSON files to PostgreSQL (asyncpg)
- Add asyncpg connection pool (db/pool.py) with JSONB codec registration
- Add schema.sql with users, clients, dropdown_categories, export_templates, sheets tables
- Add migrate_json.py one-time migration script for existing JSON data
- Rewrite user_store, sheets/manager, api/clients, api/dropdowns, api/export as async DB-backed
- Update all callers (auth, sheets, admin, ai_command, export) to await async functions
- Add postgres:16-alpine service to docker-compose with named volume and health check
- App container depends_on postgres; DATABASE_URL injected via env
- Schema applied automatically on startup; global categories seeded if DB is empty

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-03-23 19:51:37 +00:00

44 lines
1.1 KiB
Python

"""
asyncpg connection pool with JSONB codec registration.
Call init_pool() once at startup and close_pool() at shutdown.
"""
import json
import logging
import asyncpg
logger = logging.getLogger(__name__)
_pool: asyncpg.Pool | None = None
async def _init_conn(conn: asyncpg.Connection):
"""Register JSONB/JSON codecs so Python dicts/lists are passed transparently."""
await conn.set_type_codec('jsonb', encoder=json.dumps, decoder=json.loads, schema='pg_catalog')
await conn.set_type_codec('json', encoder=json.dumps, decoder=json.loads, schema='pg_catalog')
async def init_pool(dsn: str):
global _pool
_pool = await asyncpg.create_pool(
dsn,
min_size=2,
max_size=10,
command_timeout=30,
init=_init_conn,
)
logger.info("PostgreSQL pool initialized")
async def close_pool():
global _pool
if _pool:
await _pool.close()
_pool = None
logger.info("PostgreSQL pool closed")
def get_pool() -> asyncpg.Pool:
if _pool is None:
raise RuntimeError("Database pool not initialized — call init_pool() first")
return _pool