ConnectKit-Database 2.2.0

Wrapper for connection to database

ConnectKit Database [en|ru]

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ConnectKit Database is a wrapper under SQLAlchemy with some utils.

Include pydantic settings, custom json serializer, template code.

Installation

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Three types of connectors are supported:

-[x] PostgreSQL (sync/async) -[x] MySQL (MariaDB) (sync/async) -[x] Sqlite3 (sync/async)

By default, the DB connector package is not installed (exclude built-in sqlite3), extras are specified for installation.

To install sync versions:

pip install ConnectKit-Database[postgresql]  # Install driver for PostgreSQL

pip install ConnectKit-Database[mysql]       # Install driver for MySQL/MariaDB

pip install ConnectKit-Database[all]         # Install all sync drivers

To install async versions:

pip install ConnectKit-Database[asyncpg]        # Install driver for PostgreSQL

pip install ConnectKit-Database[aiomysql]       # Install driver for MySQL/MariaDB

pip install ConnectKit-Database[aiosqlite]      # Install driver for Sqlite3

pip install ConnectKit-Database[asyncall]       # Install all async drivers

Usage

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Environment variables are used for connection by default. Variables are extracted from the environment or .env file:

DB_ADDR=               # Address for default connection to postgres or mysql(mariadb)
DB_PORT=5432           # Port for default connection to postgres or mysql(mariadb)
DB_ADAPTER=postgresql  # Select default connection dialect (from postgresql, mysql and sqlite)
DB_USERNAME=postgres   # Username for default connection postgres or mysql(mariadb)
DB_PASSWORD=           # Password for default connection postgres or mysql(mariadb)
DB_NAME=postgres       # Database for postgres or mysql(mariadb), filepath for sqlite
DB_POOL_RECYCLE=3600   # Global pool recycle timeout for driver session
DB_ECHO: bool = False  # Global log all sql statements (for debug purposes)

These variables are frozen.

To open a connection, the Database and AsyncDatabase context managers are used:

from database import Database, AsyncDatabase, AsyncSession

with Database() as db:
    db.execute(...)

async with AsyncDatabase() as db:
    await db.execute(...)


# For FastAPI:

async def db_dependency() -> AsyncSession:
    async with AsyncDatabase() as db:
        yield await db.execute(...)

The default Base can be used to create models:

from database import Base
from sqlalchemy.orm import Mapped


class Model(Base):
    id: Mapped[int]

To initialize ORM models via Base for default connection:

from database import init_default_base, async_init_default_base
from database import Base

init_default_base(Base.metadata)

await async_init_default_base(Base.metadata)

or via context managers:

from database import Database, AsyncDatabase
from database import Base

Database().init_base(Base.metadata)

await (AsyncDatabase().init_base(Base.metadata))

License

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ConnectKit Database is MIT License.