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

MetricStateEventBus

open class MetricStateEventBus<T : StateEventBus>(delegate: T) : AbstractMetricDecorator<T> , StateEventBus, Metrizable

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

Parameters

the specific type of StateEventBus being decorated

Inheritors

MetricLocalStateEventBus

MetricDistributedStateEventBus

Constructors

MetricStateEventBus

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

The topic kind for state events.

Functions

open override fun close()

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

receive

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

Receives state event 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: StateEvent<*>): Mono<Void>

Sends a state event 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.