Spring 5 EnableWebSocket and EnableScheduling "Unexpected use of scheduler" issue workaround

poc.kt

package io.mikael.poc

import org.slf4j.LoggerFactory
import org.springframework.boot.SpringApplication
import org.springframework.boot.autoconfigure.SpringBootApplication
import org.springframework.context.annotation.Bean
import org.springframework.context.annotation.Configuration
import org.springframework.scheduling.annotation.EnableScheduling
import org.springframework.scheduling.annotation.Scheduled
import org.springframework.scheduling.concurrent.ThreadPoolTaskScheduler
import org.springframework.stereotype.Service
import org.springframework.web.socket.CloseStatus
import org.springframework.web.socket.TextMessage
import org.springframework.web.socket.WebSocketSession
import org.springframework.web.socket.config.annotation.EnableWebSocket
import org.springframework.web.socket.config.annotation.WebSocketConfigurer
import org.springframework.web.socket.config.annotation.WebSocketHandlerRegistry
import org.springframework.web.socket.handler.TextWebSocketHandler
import java.time.OffsetDateTime

fun main(args: Array<String>) {
    SpringApplication.run(Application::class.java, *args)
}

@SpringBootApplication
@EnableScheduling
class Application

@Configuration
@EnableWebSocket
class WebSocketConfig() : WebSocketConfigurer {

    override fun registerWebSocketHandlers(registry: WebSocketHandlerRegistry) {
        registry.addHandler(myHandler(), "/myHandler")
    }

    @Bean
    fun myHandler() = MyMessageHandler()

    @Bean
    fun taskScheduler() = ThreadPoolTaskScheduler().apply {
        poolSize = 1
        threadNamePrefix = "scheduler"
    }

}

@Service
class UpdateService {

    companion object {
        private val log = LoggerFactory.getLogger(UpdateService::class.java)
    }

    @Scheduled(fixedDelay = 600_000, initialDelay = 5_000)
    fun update() {
        log.info("Updating at ${OffsetDateTime.now()}")
    }

}

class MyMessageHandler : TextWebSocketHandler() {

    override fun afterConnectionClosed(session: WebSocketSession, status: CloseStatus) {
    }

    override fun afterConnectionEstablished(session: WebSocketSession) {
        session.sendMessage(TextMessage("You are now connected to the server. This is the first message."))
    }

    override fun handleTextMessage(session: WebSocketSession, textMessage: TextMessage) {
        println("Message received: ${textMessage.payload}")
    }
}