Add Javalin framework to Discovery

SymphonyDiscovery/pom.xml

@@ -26,6 +26,12 @@
             <artifactId>log4j-core</artifactId>
             <version>2.24.2</version>
         </dependency>
+
+        <dependency>
+            <groupId>io.javalin</groupId>
+            <artifactId>javalin</artifactId>
+            <version>6.3.0</version>
+        </dependency>
     </dependencies>
 
     <build>

SymphonyDiscovery/src/main/java/io/github/lumijiez/JavalinConfig.java

@@ -0,0 +1,12 @@
+package io.github.lumijiez;
+
+import com.google.gson.Gson;
+import io.javalin.Javalin;
+
+public class JavalinConfig {
+    public static Gson gson = new Gson();
+
+    public static void setup(Javalin app) {
+        app.get("/check", ctx -> ctx.result("OK"));
+    }
+}

SymphonyDiscovery/src/main/java/io/github/lumijiez/Main.java

@@ -1,7 +1,13 @@
 package io.github.lumijiez;
 
+import io.javalin.Javalin;
+
 public class Main {
     public static void main(String[] args) {
+        Javalin app = Javalin.create().start(8083);
+        JavalinConfig.setup(app);
+
+
         System.out.print("Discovery service up and running");
     }
 }

SymphonyDiscovery/src/main/java/io/github/lumijiez/models/requests/RegisterRequest.java

@@ -0,0 +1,19 @@
+package io.github.lumijiez.models.requests;
+
+public class RegisterRequest {
+    public String hostname;
+    public String port;
+
+    public RegisterRequest(String hostname, String port) {
+        this.hostname = hostname;
+        this.port = port;
+    }
+
+    public String getHostname() {
+        return hostname;
+    }
+
+    public String getPort() {
+        return port;
+    }
+}