ktor-server-core/io.ktor.server.application/PluginBuilder/on

on

fun <HookHandler> on(hook: Hook<HookHandler>, handler: HookHandler)

Specifies a handler for a specific hook. A hook can be a specific place in time or event during the request processing like application shutdown, an exception during call processing, etc.

See also

Example:

val ResourceManager = createApplicationPlugin("ResourceManager") {
    val resources: List<Closeable> = TODO()

    on(MonitoringEvent(ApplicationStopped)) {
        resources.forEach { it.close() }
    }
}
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