EventPublisher

class safir.metrics.EventPublisher(application, event_class)

Bases: Generic[P]

Interface for event publishers.

Represents a generic publisher of application metrics events.

Parameters:

• application (str) – Name of the application to include in events.

• event_class (type[TypeVar(P, bound= EventPayload)]) – Fully-enriched class to which payloads will be converted before publication.

Methods Summary

construct_event(payload)	Construct the full event as it will be published.
publish(payload)	Publish an event payload.

Methods Documentation

construct_event(payload)

Construct the full event as it will be published.

Parameters:

• pyaload – Payload to publish.

• payload (TypeVar(P, bound= EventPayload))

Returns:

Enriched event model including generic metadata and Avro schema configuration.

Return type:

EventPayload

abstractmethod async publish(payload)

Publish an event payload.

Parameters:

payload (TypeVar(P, bound= EventPayload)) – Payload to publish.

Returns:

Full, enriched-with-metadata event model that was published. This will be an object of a class derived from both the type of the payload and EventMetadata, but it is typed as the latter since that is the newly-added information that may be of interest to the caller and therefore the most likely to be accessed.

Return type:

EventMetadata