57 lines
1.7 KiB
Kotlin
57 lines
1.7 KiB
Kotlin
package fr.dcproject.event
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import fr.dcproject.entity.Article
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import fr.postgresjson.entity.Serializable
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import fr.postgresjson.entity.immutable.UuidEntity
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import io.ktor.application.*
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import io.ktor.util.AttributeKey
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import io.ktor.util.KtorExperimentalAPI
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import kotlinx.coroutines.DisposableHandle
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import org.joda.time.DateTime
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open class Notification(
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val type: String,
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val createdAt: DateTime = DateTime.now()
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) : Serializable
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open class EntityEvent(
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val target: UuidEntity,
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type: String,
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val action: String
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) : Notification(type) {
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enum class Type(val event: EventDefinition<ArticleUpdate>) {
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UPDATE_ARTICLE(EventDefinition<ArticleUpdate>())
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}
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}
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class ArticleUpdate(
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target: Article
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) : EntityEvent(target, "article", "update")
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/**
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* Installation Class
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*/
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class EventNotification {
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class Configuration(private val monitor: ApplicationEvents) {
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private val subscribers = mutableListOf<DisposableHandle>()
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fun <T: Notification> subscribe(definition: EventDefinition<T>, handler: EventHandler<T>): DisposableHandle {
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return monitor.subscribe(definition, handler).also {
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subscribers.add(it)
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}
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}
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}
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companion object Feature : ApplicationFeature<Application, Configuration, EventNotification> {
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override val key = AttributeKey<EventNotification>("EventNotification")
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@KtorExperimentalAPI
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override fun install(
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pipeline: Application,
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configure: Configuration.() -> Unit
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): EventNotification {
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Configuration(pipeline.environment.monitor).apply(configure)
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return EventNotification()
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}
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}
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}
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