Add: Session Runnable to read incomming data, decode and print it

src/main/java/ch/unibas/dmi/dbis/cs108/casono/server/network/Session.java

@@ -1,13 +1,65 @@
 package ch.unibas.dmi.dbis.cs108.casono.server.network;
 
-public interface Session {
-    /**
-     * Outlines an interface all session implementations have to conform to
- */
+import java.io.DataInputStream;
+import java.io.DataOutputStream;
+import java.io.EOFException;
+import java.io.IOException;
+import java.net.Socket;
+import java.nio.charset.StandardCharsets;
 
-    SessionId id();
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
 
-    void send(byte[] payload);
+public class Session implements Runnable {
+    private SessionId id;
+    private Thread thread;
+    private Socket socket;
+    private DataInputStream in;
+    private DataOutputStream out;
+    private Logger logger;
+    
+    public Session(Socket socket) throws IOException {
+        this.id = new SessionId();
+        this.thread = new Thread(this, "session-" + this.id.value());
+        this.socket = socket;
+        this.in = new DataInputStream(socket.getInputStream());
+        this.out = new DataOutputStream(socket.getOutputStream());
 
-    void close();
+        this.logger = LogManager.getLogger(Session.class.toString() + id.value());
+        this.logger.info("Created new session");
+    }
+
+    public SessionId getId() {
+        return this.id;
+    }
+
+    public void start() {
+        thread.start();
+    }
+
+    public String read() throws IOException {
+        int length = in.readInt();
+        byte[] payload = new byte[length];
+        in.readFully(payload);
+        return new String(payload, StandardCharsets.UTF_8);
+    }
+
+    public void close() throws IOException {
+        socket.close();
+    }
+
+    @Override
+    public void run() {
+        while (true) {
+            try {
+                System.out.println("Recieved: " + read());
+            } catch (EOFException e) {
+                logger.info("Client disconnected");
+                break;
+            } catch (IOException e) {
+                e.printStackTrace();
+                break;
+            }
+        }
+    }
 }