Vert.x Game Server

This project is an implementation of the Game server on top of Vert.x.

It provides the HTTP endpoints and websockets for the game part of the demo.

Structure

The projects is composed by 3 verticles:

MainVerticle just deploys the 2 other verticles
ServerVerticle creates a HTTP server and manage HTTP requests and web sockets, data is computed by the GameVerticle
GameVerticle manages the game. It is written in Groovy

This architecture lets us increase the number of instances of the GameVerticle to face the load. The ServerVerticle and GameVerticle are communicating using the event bus. So, potentially, the GameVerticle instances can be located on different computers.

Build and Run

mvn clean package -DskipTests

It generates a fat jar in target: game-service-1.0.0-SNAPSHOT-fat.jar

Launch it with: java -jar target/game-service-1.0.0-SNAPSHOT-fat.jar - cluster

Tests are simulating a couple of loads, so may takes a bit of time to run.

Fast run for dev

mvn compile exec:exec@run

Redeploy for Dev

vertx run src/main/java/com/redhat/middleware/keynote/MainVerticle.java -cluster -cp target/game-service.jar --redeploy=src/main/**/* --launcher-class=io.vertx.core.Launcher --on-redeploy="mvn compile package -DskipTests"

Configuration

You can pass a configuration object using: -conf my-configuration.json.

This configuration can contain:

game-verticle-instances : the number of GameVerticle instances, 1 by default, can be 0
server-verticle-instances : the number of ServerVerticle instances, 4 by default, can be 0
port: the HTTP server port, 9001 by default
number-of-teams: the number of teams, 4 by default
score-broadcast-interval: the period in ms between 2 score broadcast, 2500 by default