Add healthchecks

src/main/java/com/backend/starter/HealthCheckManager.java

@@ -0,0 +1,12 @@
+package com.backend.starter;
+
+import io.vertx.ext.healthchecks.HealthCheckHandler;
+import io.vertx.ext.healthchecks.Status;
+
+public class HealthCheckManager {
+  public static void configureHealthChecks(HealthCheckHandler healthCheckHandler) {
+    healthCheckHandler.register("App connection", promise -> {
+      promise.complete(Status.OK());
+    });
+  }
+}

src/main/java/com/backend/starter/MainVerticle.java

@@ -2,19 +2,30 @@
 
 import io.vertx.core.AbstractVerticle;
 import io.vertx.core.Promise;
+import io.vertx.ext.healthchecks.HealthCheckHandler;
+import io.vertx.ext.healthchecks.HealthChecks;
+import io.vertx.ext.web.Router;
 
 public class MainVerticle extends AbstractVerticle {
 
   @Override
   public void start(Promise<Void> startPromise) throws Exception {
-    vertx.createHttpServer().requestHandler(req -> {
-      req.response()
-        .putHeader("content-type", "text/plain")
-        .end("Hello from Vert.x!");
-    }).listen(8888, http -> {
+    HealthCheckHandler healthCheckHandler = HealthCheckHandler
+      .createWithHealthChecks(HealthChecks.create(vertx));
+    HealthCheckManager.configureHealthChecks(healthCheckHandler);
+
+    Router router = Router.router(vertx);
+    router.get("/ping").handler(healthCheckHandler);
+    router.get("/*").handler(routingContext -> {
+      routingContext.response()
+        .putHeader("content-type", "text/plain; charset=utf-8")
+        .end("Hello smolthing \uD83D\uDCA9.");
+    });
+
+    vertx.createHttpServer().requestHandler(router).listen(8888, http -> {
       if (http.succeeded()) {
         startPromise.complete();
-        System.out.println("HTTP server started on port 8888");
+        System.out.println("HTTP server is running on port 8888");
       } else {
         startPromise.fail(http.cause());
       }