SQLAlchemy

The logfire.instrument_sqlalchemy() method will create a span for every query executed by a SQLAlchemy engine.

Installation

Install logfire with the sqlalchemy extra:

pipuv

pip install 'logfire[sqlalchemy]'

uv add 'logfire[sqlalchemy]'

Usage

Let's see a minimal example below. You can run it with python main.py:

Instrument a Single EngineInstrument Multiple Engines

main.py

import logfire
from sqlalchemy import create_engine

logfire.configure()

engine = create_engine("sqlite:///:memory:")
logfire.instrument_sqlalchemy(engine=engine)

main.py

import logfire
from sqlalchemy import create_engine

logfire.configure()

engine_one = create_engine("sqlite:///:memory:")
engine_two = create_engine("sqlite:///:memory:")
logfire.instrument_sqlalchemy(engines=[engine_one, engine_two])

The keyword arguments of logfire.instrument_sqlalchemy() are passed to the SQLAlchemyInstrumentor().instrument() method of the OpenTelemetry SQLAlchemy Instrumentation package, read more about it here.

Warning

It's best to use the engine or engines arguments. If no engine is specified, then instrument_sqlalchemy may only work if it's called before sqlalchemy is imported, in which case all engines are instrumented.

Tip

If you use SQLModel, you can use the same SQLAlchemyInstrumentor to instrument it.