Introduction to Programming

Periodic service as a microservice

Vert.x also allows us to create a periodic service, which does something at a regular interval. Here is an example:

package com.packt.javapath.ch18demo.microservices;import io.vertx.rxjava.core.AbstractVerticle;import java.time.LocalTime;import java.time.temporal.ChronoUnit;public class PeriodicService1 extends AbstractVerticle {  public void start() throws Exception {     LocalTime start = LocalTime.now();     vertx.setPeriodic(1000, v-> {         System.out.println("Beep!");         if(ChronoUnit.SECONDS.between(start, LocalTime.now()) > 3 ){             vertx.undeploy(deploymentID());         }     });     System.out.println("Vertical PeriodicService1 is deployed");  }  public void stop() throws Exception {     System.out.println("Vertical PeriodicService1 is ...