Vetariasn: An new framework for developing great application

Usage

This is API example.

# An simple CRUD example.
import vetariasn as vt

class Employee(vt.orm.Base):
    # vt.orm.Base is an subclass of sqlalchemy.orm.DeclarativeBase
    # __tablename__ is optional. Convention over Configuration.
    uid = vt.orm.op.Column(int, primary_key=True) # vt.orm.op == sqlalchemy
    name = vt.orm.op.Column(str, unique=True, nullable=False)

class Message(vt.transient.Base):
    # vt.transient: in-memory sqlite ORM API.
    seq = vt.orm.op.Column(int, primary_key=True)
    sender = vt.orm.op.Column(int, primary_key=True)
    target = vt.orm.op.Column(int, primary_key=True)
    content = vt.orm.op.Column(vt.orm.op.Text(), nullable=False)

# Create.
@vt.http.get("/create-employee")
async def create_employee(name: str):
    async with vt.orm.Session() as session:
        uid = vt.algo.calc_seqid() # Snowflake UID
        # An simple creation operation
        result = (await session.execute(
            vt.orm.op.select(Employee)
            .where(Employee.name == name)
        )).fetchone()
        if result is not None:
            return {"uid": result._tuple()[0].uid, "already": True}
        session.add(Employee(uid=uid, name=name))
        await session.commit()
    return {"uid": uid, "already": False}

# Read.
@vt.http.get("/get-employee/{name}")
async def get_employee_by_name(name: str):
    async with vt.orm.Session() as session:
        result = (await session.execute(
            vt.orm.op.select(Employee)
            .where(Employee.name == name)
        )).fetchone()
        if result is None:
            return {"found": False, "uid": 0, "name": ""}
        employee = result._tuple()[0]
        return {"found": True, "uid": employee.uid, "name": employee.name}

# Start system.
if __name__ == "__main__":
    vt.run()

Environment Variables

Variable	Description
VETA_DB_URL	Database URL (Sqlalchemy Async)
VETA_HTTP_PORT	HTTP Web Port