Upgrade to Java 21, fix Docker image, add server integration test

.github/workflows/build.yml

@@ -15,10 +15,10 @@ jobs:
     steps:
       - name: Checkout code
         uses: actions/checkout@v2
-      - name: Set up JDK 17
-        uses: actions/setup-java@v3
+      - name: Set up JDK 21
+        uses: actions/setup-java@v4
         with:
-          java-version: 17
+          java-version: 21
           distribution: 'temurin'
       # Step that caches and restores maven dependencies
       - name: Cache maven dependencies
@@ -32,3 +32,7 @@ jobs:
         run: sudo apt-get install -y genisoimage
       - name: Build with Maven
         run: mvn -B install --file pom.xml
+      - name: Build Docker image
+        uses: docker/build-push-action@v5
+        with:
+          tags: philippvk/minigolf:latest

.github/workflows/release.yml

@@ -18,10 +18,10 @@ jobs:
         uses: metcalfc/[email protected]
         with:
           myToken: ${{ secrets.GITHUB_TOKEN }}
-      - name: Set up JDK 17
-        uses: actions/setup-java@v3
+      - name: Set up JDK 21
+        uses: actions/setup-java@v4
         with:
-          java-version: 17
+          java-version: 21
           distribution: 'temurin'
       # Step that caches and restores maven dependencies
       - name: Cache maven dependencies

Dockerfile

@@ -1,16 +1,15 @@
 #
 # Build stage
 #
-FROM maven:3.6.0-jdk-8-slim AS build
+FROM maven:3.9.7-eclipse-temurin-21 AS build
 COPY . /home/app/
 RUN mvn -f /home/app/pom.xml -pl server -am clean package
 
 #
 # Package stage
 #
-FROM openjdk:8-alpine
+FROM eclipse-temurin:21-alpine
 COPY --from=build /home/app/server/target/server-*.jar /home/minigolf/server.jar
-COPY tracks/ /home/minigolf/tracks/
 EXPOSE 4242
 WORKDIR /home/minigolf
 ENTRYPOINT ["java","-jar","server.jar"]

README.md

@@ -35,7 +35,7 @@ The Java Applet-based Minigolf Client was one of the most popular multiplayer ga
 
 ### Prerequisites
 - Clone this repo: `git clone [email protected]:PhilippvK/playforia-minigolf.git`
-- Install Java Development Kit 17 (https://adoptium.net/en-GB/temurin/releases/)
+- Install Java Development Kit 21 (https://adoptium.net/en-GB/temurin/releases/)
 - Install Apache `maven` for building: https://maven.apache.org/install.html
 - *Optional:* Install IntelliJ IDEA Java IDE (https://www.jetbrains.com/idea/download/) and import this repository as project
 
@@ -62,7 +62,13 @@ java -jar client.jar -server 192.168.1.7 -lang en_US # Replace IP with the one o
 
 #### Running Minigolf Server in Docker Container
 
-We provide an experimental Dockerfile for easy hosting of the server application. You can either build the image by yourself or download the pre-build images from [quay.io](https://quay.io/repository/philippvk/minigolf) via `docker pull quay.io/philippvk/minigolf:latest`.
+We provide an experimental Dockerfile for easy hosting of the server application. 
+You can either build and run the image:
+```sh
+docker build -t pfmg .
+docker run pfmg
+```
+or download the pre-built images from [quay.io](https://quay.io/repository/philippvk/minigolf) via `docker pull quay.io/philippvk/minigolf:latest`.
 
 Running the Editor is quite straightforward as it can be started like expected: `java -jar editor.jar`
 
@@ -83,7 +89,7 @@ Client CLI options:
 ## Compatibility
 
 Tested:
-- Ubuntu 22.04 with Java version `17.0.6`
+- Ubuntu 22.04 with Java version `21.0.3`
 - Windows 10/11
 
 ## Problems

client/pom.xml

@@ -15,8 +15,8 @@
         <project.mainClass>org.moparforia.client.Launcher</project.mainClass>
         <project.name>Playforia Minigolf Client</project.name>
         <project.download.directory>${project.build.directory}/downloads</project.download.directory>
-        <project.jre.osx.link>https://github.com/adoptium/temurin17-binaries/releases/download/jdk-17.0.7%2B7/OpenJDK17U-jre_x64_mac_hotspot_17.0.7_7.tar.gz</project.jre.osx.link>
-        <project.jre.osx.name>jdk-17.0.7+7-jre</project.jre.osx.name>
+        <project.jre.osx.link>https://github.com/adoptium/temurin21-binaries/releases/download/jdk-21.0.2%2B13/OpenJDK21U-jre_aarch64_mac_hotspot_21.0.2_13.tar.gz</project.jre.osx.link>
+        <project.jre.osx.name>jdk-21.0.2+13-jre</project.jre.osx.name>
     </properties>
 
     <dependencies>
@@ -84,7 +84,7 @@
             <plugin>
                 <groupId>com.googlecode.maven-download-plugin</groupId>
                 <artifactId>download-maven-plugin</artifactId>
-                <version>1.6.8</version>
+                <version>1.9.0</version>
                 <executions>
                     <execution>
                       <id>download-osx-jre</id>
@@ -104,7 +104,6 @@
             <plugin>
                 <groupId>sh.tak.appbundler</groupId>
                 <artifactId>appbundle-maven-plugin</artifactId>
-                <version>1.2.0</version>
                 <configuration>
                     <bundleName>${project.name}</bundleName>
                     <iconFile>src/main/resources/icons/playforia.icns</iconFile>
@@ -133,7 +132,6 @@
             <plugin>
                 <groupId>com.akathist.maven.plugins.launch4j</groupId>
                 <artifactId>launch4j-maven-plugin</artifactId>
-                <version>2.3.3</version>
                 <executions>
                     <execution>
                         <id>windows-build</id>
@@ -154,7 +152,7 @@
                             <icon>src/main/resources/icons/playforia.ico</icon>
                             <jre>
                                 <path>jre</path>
-                                <minVersion>17</minVersion>
+                                <minVersion>21</minVersion>
                             </jre>
                             <versionInfo>
                                 <fileVersion>1.0.0.0</fileVersion>
@@ -174,7 +172,7 @@
             <plugin>
                 <artifactId>plantuml-generator-maven-plugin</artifactId>
                 <groupId>de.elnarion.maven</groupId>
-                <version>1.1.2</version>
+                <version>2.4.1</version>
                 <executions>
                     <execution>
                         <id>generate-simple-diagram</id>

client/src/test/java/org/moparforia/client/LauncherCLITest.java

@@ -5,6 +5,7 @@
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.extension.ExtendWith;
 import org.mockito.junit.jupiter.MockitoExtension;
+import org.mockito.quality.Strictness;
 import picocli.CommandLine;
 
 import javax.swing.JFrame;
@@ -42,7 +43,7 @@ class LauncherCLITest {
     void setUp() throws Exception {
         // Mock game
         launcher = mock(Launcher.class, withSettings()
-                .lenient()
+                .strictness(Strictness.LENIENT)
                 .withoutAnnotations());
 
         // Use real methods

pom.xml

@@ -7,6 +7,11 @@
     <packaging>pom</packaging>
     <version>2.1.2.0-BETA</version>
     <name>Playforia Minigolf</name>
+    <organization>
+        <name>Playforia</name>
+    </organization>
+    <inceptionYear>2002</inceptionYear>
+    <description>An online multiplayer minigolf game</description>
 
     <modules>
         <module>server</module>
@@ -18,24 +23,24 @@
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.mainClass>test.mainClass</project.mainClass>
-        <picocli.version>4.5.2</picocli.version>
+        <picocli.version>4.7.6</picocli.version>
     </properties>
     <build>
         <pluginManagement>
             <plugins>
                 <plugin>
                     <groupId>org.apache.maven.plugins</groupId>
                     <artifactId>maven-compiler-plugin</artifactId>
-                    <version>3.11.0</version>
+                    <version>3.13.0</version>
                     <configuration>
-                        <source>17</source>
-                        <target>17</target>
+                        <source>21</source>
+                        <target>21</target>
                     </configuration>
                 </plugin>
                 <plugin>
                     <groupId>org.apache.maven.plugins</groupId>
                     <artifactId>maven-shade-plugin</artifactId>
-                    <version>3.2.4</version>
+                    <version>3.5.3</version>
                     <executions>
                         <execution>
                             <phase>package</phase>
@@ -55,6 +60,7 @@
                                         </manifestEntries>
                                     </transformer>
                                 </transformers>
+                                <createDependencyReducedPom>false</createDependencyReducedPom>
                             </configuration>
                         </execution>
                     </executions>
@@ -67,16 +73,20 @@
                 <plugin>
                     <groupId>com.akathist.maven.plugins.launch4j</groupId>
                     <artifactId>launch4j-maven-plugin</artifactId>
-                    <version>1.7.25</version>
+                    <version>2.5.0</version>
                 </plugin>
                 <plugin>
                     <groupId>org.codehaus.mojo</groupId>
                     <artifactId>exec-maven-plugin</artifactId>
-                    <version>3.0.0</version>
+                    <version>3.3.0</version>
                 </plugin>
                 <plugin>
+                    <groupId>org.apache.maven.plugins</groupId>
                     <artifactId>maven-surefire-plugin</artifactId>
-                    <version>2.22.2</version>
+                    <version>3.2.5</version>
+                    <configuration>
+                        <argLine>-XX:+EnableDynamicAgentLoading</argLine>
+                    </configuration>
                 </plugin>
             </plugins>
         </pluginManagement>
@@ -105,37 +115,31 @@
             <dependency>
                 <groupId>org.junit.jupiter</groupId>
                 <artifactId>junit-jupiter-engine</artifactId>
-                <version>5.6.2</version>
+                <version>5.10.2</version>
                 <scope>test</scope>
             </dependency>
             <dependency>
                 <groupId>org.mockito</groupId>
                 <artifactId>mockito-core</artifactId>
-                <version>3.5.10</version>
+                <version>5.12.0</version>
                 <scope>test</scope>
             </dependency>
             <dependency>
                 <groupId>org.mockito</groupId>
                 <artifactId>mockito-junit-jupiter</artifactId>
-                <version>3.5.10</version>
+                <version>5.12.0</version>
                 <scope>test</scope>
             </dependency>
             <dependency>
                 <groupId>com.github.marschall</groupId>
                 <artifactId>memoryfilesystem</artifactId>
-                <version>2.1.0</version>
-                <scope>test</scope>
-            </dependency>
-            <dependency>
-                <groupId>org.softsmithy.lib</groupId>
-                <artifactId>softsmithy-lib-core</artifactId>
-                <version>2.1.1</version>
+                <version>2.8.0</version>
                 <scope>test</scope>
             </dependency>
             <dependency>
                 <groupId>de.elnarion.util</groupId>
                 <artifactId>plantuml-generator-util</artifactId>
-                <version>1.1.2</version>
+                <version>2.4.1</version>
             </dependency>
         </dependencies>
     </dependencyManagement>

server/pom.xml

@@ -81,7 +81,7 @@
             <plugin>
                 <artifactId>plantuml-generator-maven-plugin</artifactId>
                 <groupId>de.elnarion.maven</groupId>
-                <version>1.1.2</version>
+                <version>2.4.1</version>
                 <executions>
                     <execution>
                         <id>generate-simple-diagram</id>

server/src/main/java/org/moparforia/server/Server.java

@@ -50,6 +50,9 @@ public class Server implements Runnable {
     private int port;
     private Optional<String> tracksDirectory;
 
+    private Channel serverChannel;
+    private boolean running;
+
     private HashMap<LobbyType, Lobby> lobbies = new HashMap<LobbyType, Lobby>();
     //private ArrayList<LobbyRef> lobbies = new ArrayList<LobbyRef>();
     //private HashMap<Integer, Game> games = new HashMap<Integer, Game>();
@@ -188,17 +191,23 @@ public void start() {
         bootstrap.setOption("child.tcpNoDelay", true);
         bootstrap.setOption("child.keepAlive", true);
         try {
-            bootstrap.bind(new InetSocketAddress(host, port));
+            this.serverChannel = bootstrap.bind(new InetSocketAddress(host, port));
+            this.running = true;
             new Thread(this).start();
         } catch (Exception ex) {
             ex.printStackTrace();
         }
     }
 
+    public void stop() throws InterruptedException {
+        this.serverChannel.close().sync();
+        this.running = false;
+    }
+
     @Override
     public void run() {
         System.out.println("Started server on host " + this.host + " with port " + this.port);
-        while (true) {
+        while (this.running) {
             try {
                 Thread.sleep(10);
                 Iterator<Event> iterator = events.iterator();

server/src/main/java/org/moparforia/server/event/ClientDisconnectedEvent.java

@@ -18,7 +18,7 @@ public void process(Server server) {
         Player player;
         if ((player = (Player)channel.getAttachment()) != null) {
             if (player.getLobby() != null) {
-              player.getLobby().removePlayer(player, Lobby.PART_REASON_USERLEFT,null);
+              player.getLobby().removePlayer(player, Lobby.PART_REASON_USERLEFT);
             }
         }
         System.out.println("Client disconnected: " + channel);

server/src/main/java/org/moparforia/server/net/packethandlers/QuitHandler.java

@@ -28,7 +28,7 @@ public Pattern getPattern() {
     public boolean handle(Server server, Packet packet, Matcher message) {
         Player player = (Player) packet.getChannel().getAttachment();
         if (message.group(1).contains("lobby")) {
-            player.getLobby().removePlayer(player, Lobby.PART_REASON_USERLEFT, null);
+            player.getLobby().removePlayer(player, Lobby.PART_REASON_USERLEFT);
         }
         packet.getChannel().disconnect();
         packet.getChannel().close();