fastapi-satella-metrics

fastapi-satella-metrics is an application to seamlessly measure your FastAPI application using Satella's metrics.

Example use:

import fastapi
from fastapi_satella_metrics import SatellaMetricsMiddleware
app = fastapi.FastAPI()
app.add_middleware(SatellaMetricsMiddleware)

If you want to exclude /metrics endpoint from being metricized:

app.add_middleware(SatellaMetricsMiddleware, exclude_metrics_endpoint=True)

Or to use your metrics:

summary_metric = getMetric(
    "requests_summary", "summary", quantiles=[0.2, 0.5, 0.9, 0.95, 0.99]
)
histogram_metric = getMetric("requests_histogram", "histogram")
response_codes_metric = getMetric("requests_response_codes", "counter")

app.add_middleware(
    SatellaMetricsMiddleware,
    summary_metric=summary_metric,
    histogram_metric=histogram_metric,
    response_codes_metric=response_codes_metric,
)

To launch a Prometheus exporter use the following snippet:

from satella.instrumentation.metrics.exporters import PrometheusHTTPExporterThread
phet = PrometheusHTTPExporterThread('0.0.0.0', 8080, {'service_name': 'my_service'})
phet.start()

Or, if you desire to export your metrics within FastAPI, just use:

import fastapi
from fastapi_satella_metrics.prometheus_exporter import PrometheusExporter
app = fastapi.FastAPI()
app.include_router(PrometheusExporter({'service_name': 'my_service'}))