Add automatic shutdown when proxy is empty

README.md

@@ -22,7 +22,7 @@ GeyserConnect is a server that Minecraft: Bedrock Edition clients can connect to
 	- [x] Add
 	- [x] Remove
 	- [x] Edit
-- [ ] Stop Geyser server after its idle for a while
+- [x] Stop Geyser server after its idle for a while
 - [x] Config file
 - [x] Fix server images not loading straight away on Win10
 - [x] Per server online/offline mode

src/main/java/org/geysermc/connect/GeyserConnectConfig.java

@@ -76,6 +76,9 @@ public class GeyserConnectConfig {
 
         @JsonProperty("debug-mode")
         private boolean debugMode;
+
+        @JsonProperty("shutdown-time")
+        private int shutdownTime;
     }
 
     @Getter

src/main/java/org/geysermc/connect/MasterServer.java

@@ -29,6 +29,7 @@ package org.geysermc.connect;
 import com.nukkitx.protocol.bedrock.*;
 import com.nukkitx.protocol.bedrock.v390.Bedrock_v390;
 import lombok.Getter;
+import lombok.Setter;
 import org.geysermc.connect.utils.Server;
 import org.geysermc.connector.utils.FileUtils;
 import org.geysermc.connect.proxy.GeyserProxyBootstrap;
@@ -78,6 +79,10 @@ public class MasterServer {
     @Getter
     private AbstractStorageManager storageManager;
 
+    @Setter
+    @Getter
+    private long lastDisconnectTime = 0l;
+
     public MasterServer() {
         this.instance = this;
 
@@ -97,6 +102,8 @@ public class MasterServer {
 
         this.generalThreadPool = Executors.newScheduledThreadPool(32);
 
+        boolean enableShutdownTimer = geyserConnectConfig.getGeyser().getShutdownTime() != -1;
+
         // Start a timer to keep the thread running
         timer = new Timer();
         TimerTask task = new TimerTask() { public void run() { } };
@@ -157,9 +164,7 @@ public class MasterServer {
     public void shutdown() {
         shuttingDown = true;
 
-        if (geyserProxy != null) {
-            geyserProxy.onDisable();
-        }
+        shutdownGeyserProxy();
 
         generalThreadPool.shutdown();
         storageManager.closeStorage();
@@ -172,4 +177,11 @@ public class MasterServer {
             geyserProxy.onEnable();
         }
     }
+
+    public void shutdownGeyserProxy() {
+        if (geyserProxy != null) {
+            geyserProxy.onDisable();
+            geyserProxy = null;
+        }
+    }
 }

src/main/java/org/geysermc/connect/proxy/ProxyConnectorServerEventHandler.java

@@ -32,6 +32,8 @@ import org.geysermc.connector.network.ConnectorServerEventHandler;
 import org.geysermc.connect.MasterServer;
 import org.geysermc.connect.utils.Player;
 
+import java.util.concurrent.TimeUnit;
+
 public class ProxyConnectorServerEventHandler extends ConnectorServerEventHandler {
 
     private final GeyserConnector connector;
@@ -56,6 +58,21 @@ public class ProxyConnectorServerEventHandler extends ConnectorServerEventHandle
             if (player != null) {
                 MasterServer.getInstance().getLogger().debug("Player disconnected from Geyser proxy: " + player.getDisplayName() + " (" + disconnectReason + ")");
                 MasterServer.getInstance().getPlayers().remove(session.getAuthData().getXboxUUID());
+
+                // Set the last disconnect time
+                MasterServer.getInstance().setLastDisconnectTime(System.currentTimeMillis());
+
+                int shutdownTime = MasterServer.getInstance().getGeyserConnectConfig().getGeyser().getShutdownTime();
+
+                if (shutdownTime != -1) {
+                    MasterServer.getInstance().getGeneralThreadPool().schedule(() -> {
+                        if (System.currentTimeMillis() - MasterServer.getInstance().getLastDisconnectTime() > shutdownTime * 1000
+                                && connector != null
+                                && connector.getPlayers().size() <= 0) {
+                            MasterServer.getInstance().shutdownGeyserProxy();
+                        }
+                    }, shutdownTime, TimeUnit.SECONDS);
+                }
             }
         });
     }

src/main/resources/config.yml

@@ -28,6 +28,10 @@ geyser:
   # If debug messages should be sent through console, has to be enabled in both places to work
   debug-mode: false
 
+  # The time to wait after the last player disconnects to shutdown the proxy
+  # In seconds, set to -1 to disable
+  shutdown-time: 300
+
 # A global list of servers sent to all clients
 servers:
   - address: "play.cubecraft.net"