wow-core/me.ahoo.wow.metrics/MetricDomainEventBus

MetricDomainEventBus

open class MetricDomainEventBus<T : DomainEventBus>(delegate: T) : AbstractMetricDecorator<T> , DomainEventBus, Metrizable

Metric decorator for domain event buses that collects metrics on domain event sending and receiving operations. This class wraps any DomainEventBus implementation and adds metrics collection with tags for aggregate name and source identification.

Parameters

the specific type of DomainEventBus being decorated

Inheritors

MetricLocalDomainEventBus

MetricDistributedDomainEventBus

Constructors

MetricDomainEventBus

constructor(delegate: T)

Properties

delegate

override val delegate: T

the original component being decorated, must implement the Decorator interface

source

val source: String

The source identifier derived from the original delegate's class name. This is used for metrics tagging to identify the component type.

topicKind

open override val topicKind: TopicKind

Functions

open override fun close()

Closes the domain event bus and releases any resources. This delegates to the underlying domain event bus implementation.

receive

open override fun receive(namedAggregates: Set<NamedAggregate>): Flux<EventStreamExchange>

Receives event stream exchanges for the specified named aggregates and collects metrics on the operation. Metrics collected include timing and tags for aggregate identification and subscriber information.

send

open override fun send(message: DomainEventStream): Mono<Void>

Sends a domain event stream and collects metrics on the operation. Metrics collected include timing, success/failure rates, and tags for aggregate identification.

tagSource

fun <M> Flux<M>.tagSource(): Flux<M>

Extension function to tag a Flux publisher with the current source identifier. This adds the source tag to metrics collected from this reactive stream.

fun <M> Mono<M>.tagSource(): Mono<M>

Extension function to tag a Mono publisher with the current source identifier. This adds the source tag to metrics collected from this reactive stream.