reset space

DemoApplication.java

@@ -1,18 +1,12 @@
 import io.javalin.Javalin;
-import com.google.gson.Gson;
 
 public class DemoApplication {
     public static void main(String[] args) {
-        int port = 8080;
-        Javalin app = Javalin.create().start(port);
+        int port = Integer.parseInt(System.getenv().getOrDefault("PORT", "7860"));
 
-        Gson gson = new Gson();
+        Javalin app = Javalin.create().start(port);
 
         app.get("/", ctx -> ctx.result("Hello from Javalin on Hugging Face!"));
-
-        app.get("/user", ctx -> {
-            User user = new User("Kevan", 21);
-            ctx.result(gson.toJson(user));
-        });
+        app.get("/ping", ctx -> ctx.result("pong"));
     }
 }

Dockerfile

@@ -1,41 +1,26 @@
-FROM eclipse-temurin:17-jdk AS build
+FROM openjdk:17-jdk-slim
 
 WORKDIR /app
 
-# Install Maven for dependency fetching
-RUN apt-get update && apt-get install -y maven && rm -rf /var/lib/apt/lists/*
+# Download Javalin + Jetty dependencies
+RUN mkdir libs && \
+    curl -L -o libs/javalin.jar https://repo1.maven.org/maven2/io/javalin/javalin/5.6.1/javalin-5.6.1.jar && \
+    curl -L -o libs/jetty.jar https://repo1.maven.org/maven2/org/eclipse/jetty/jetty-server/11.0.15/jetty-server-11.0.15.jar && \
+    curl -L -o libs/jetty-util.jar https://repo1.maven.org/maven2/org/eclipse/jetty/jetty-util/11.0.15/jetty-util-11.0.15.jar && \
+    curl -L -o libs/jetty-http.jar https://repo1.maven.org/maven2/org/eclipse/jetty/jetty-http/11.0.15/jetty-http-11.0.15.jar && \
+    curl -L -o libs/jetty-io.jar https://repo1.maven.org/maven2/org/eclipse/jetty/jetty-io/11.0.15/jetty-io-11.0.15.jar && \
+    curl -L -o libs/slf4j.jar https://repo1.maven.org/maven2/org/slf4j/slf4j-simple/2.0.7/slf4j-simple-2.0.7.jar && \
+    curl -L -o libs/slf4j-api.jar https://repo1.maven.org/maven2/org/slf4j/slf4j-api/2.0.7/slf4j-api-2.0.7.jar
 
-# Create minimal pom.xml
-RUN echo '<project xmlns="http://maven.apache.org/POM/4.0.0" \
-  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" \
-  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 \
-  http://maven.apache.org/xsd/maven-4.0.0.xsd"> \
-  <modelVersion>4.0.0</modelVersion> \
-  <groupId>com.example</groupId> \
-  <artifactId>javalin-demo</artifactId> \
-  <version>1.0</version> \
-  <dependencies> \
-    <dependency><groupId>io.javalin</groupId><artifactId>javalin</artifactId><version>5.6.1</version></dependency> \
-    <dependency><groupId>com.google.code.gson</groupId><artifactId>gson</artifactId><version>2.10.1</version></dependency> \
-  </dependencies> \
-</project>' > pom.xml
+# Copy your Java source code
+COPY DemoApplication.java /app/
 
-# Download dependencies into libs/
-RUN mvn dependency:copy-dependencies -DoutputDirectory=libs
+# Compile the Java file with dependencies
+RUN javac -cp "libs/*" DemoApplication.java
 
-# Copy sources
-COPY DemoApplication.java User.java ./
+# Expose Hugging Face PORT
+ENV PORT=7860
+EXPOSE 7860
 
-# Compile including libs and current dir
-RUN javac -cp "libs/*:." DemoApplication.java User.java && \
-    jar cfe app.jar DemoApplication *.class
-
-FROM eclipse-temurin:17-jre
-WORKDIR /app
-
-COPY --from=build /app/app.jar .
-COPY --from=build /app/libs ./libs
-
-EXPOSE 8080
-
-CMD ["java", "-cp", "app.jar:libs/*", "DemoApplication"]
+# Run the app
+CMD ["java", "-cp", ".:libs/*", "DemoApplication"]

User.java

@@ -1,9 +0,0 @@
-public class User {
-    private String name;
-    private int age;
-
-    public User(String name, int age) {
-        this.name = name;
-        this.age = age;
-    }
-}

pom.xml

@@ -1,56 +0,0 @@
-<project xmlns="http://maven.apache.org/POM/4.0.0" 
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 
-                             http://maven.apache.org/xsd/maven-4.0.0.xsd">
-    <modelVersion>4.0.0</modelVersion>
-    <groupId>com.example</groupId>
-    <artifactId>javalin-demo</artifactId>
-    <version>0.0.1-SNAPSHOT</version>
-    <properties>
-        <java.version>17</java.version>
-    </properties>
-
-    <dependencies>
-        <!-- Javalin -->
-        <dependency>
-            <groupId>io.javalin</groupId>
-            <artifactId>javalin-bundle</artifactId>
-            <version>5.6.1</version>
-        </dependency>
-
-        <!-- JSON serialization -->
-        <dependency>
-            <groupId>com.fasterxml.jackson.core</groupId>
-            <artifactId>jackson-databind</artifactId>
-            <version>2.16.4</version>
-        </dependency>
-    </dependencies>
-
-    <build>
-        <plugins>
-            <!-- Package JAR -->
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-compiler-plugin</artifactId>
-                <version>3.11.0</version>
-                <configuration>
-                    <source>${java.version}</source>
-                    <target>${java.version}</target>
-                </configuration>
-            </plugin>
-
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-jar-plugin</artifactId>
-                <version>3.3.0</version>
-                <configuration>
-                    <archive>
-                        <manifest>
-                            <mainClass>DemoApplication</mainClass>
-                        </manifest>
-                    </archive>
-                </configuration>
-            </plugin>
-        </plugins>
-    </build>
-</project>