What's Changed
There were a lot of time since 0.5.7 OpenTelemetry release and now we completed Observability features we planned! FastStream supports Prometheus metrics in a native way!
Special thanks to @roma-frolov and @draincoder (again) for it!
To collect Prometheus metrics for your FastStream application you just need to install special distribution
pip install faststream[prometheus]And use PrometheusMiddleware. Also, it could be helpful to use our ASGI to serve metrics endpoint in the same app.
from prometheus_client import CollectorRegistry, make_asgi_app
from faststream.asgi import AsgiFastStream
from faststream.nats import NatsBroker
from faststream.nats.prometheus import NatsPrometheusMiddleware
registry = CollectorRegistry()
broker = NatsBroker(
middlewares=(
NatsPrometheusMiddleware(registry=registry),
)
)
app = AsgiFastStream(
broker,
asgi_routes=[
("/metrics", make_asgi_app(registry)),
]
)Moreover, we have a ready-to-use Grafana dashboard you can just import and use!
To find more information about Prometheus support, just visit our documentation.
All changes
- docs: Correct minimum FastAPI version for lifespan handling by @tim-hutchinson in #1853
- add aiogram example by @IvanKirpichnikov in #1858
- Feature: Prometheus Middleware by @roma-frolov in #1791
- Add in-progress tutorial to how-to section by @sheldygg in #1859
- docs: Add info about Grafana dashboard by @draincoder in #1863
New Contributors
- @tim-hutchinson made their first contribution in #1853
Full Changelog: 0.5.27...0.5.28