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Use global Prometheus registry in FastStream integration #124

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Sep 29, 2025
Merged

Use global Prometheus registry in FastStream integration #124

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5 changes: 2 additions & 3 deletions microbootstrap/bootstrappers/faststream.py
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Original file line number Diff line number Diff line change
Expand Up @@ -76,20 +76,19 @@ def is_ready(self) -> bool:
return bool(self.instrument_config.prometheus_middleware_cls and super().is_ready())

def bootstrap_before(self) -> dict[str, typing.Any]:
self.collector_registry = prometheus_client.CollectorRegistry()
return {
"asgi_routes": (
(
self.instrument_config.prometheus_metrics_path,
prometheus_client.make_asgi_app(self.collector_registry),
prometheus_client.make_asgi_app(prometheus_client.REGISTRY),
),
)
}

def bootstrap_after(self, application: AsgiFastStream) -> AsgiFastStream: # type: ignore[override]
if self.instrument_config.prometheus_middleware_cls and application.broker:
application.broker.add_middleware(
self.instrument_config.prometheus_middleware_cls(registry=self.collector_registry)
self.instrument_config.prometheus_middleware_cls(registry=prometheus_client.REGISTRY)
)
return application

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