Bridge: изменение настроек сервера в реальном времени (onlinemode)

В виду того, что задействуется рефлексия, а spigot не валяется ни на
одном репозитарии, для корректной компиляции приходится лепить фейковые
классы. Надеюсь в будующем я придумаю как избавится от такого костыля.

bridge-mcserver-fake/build.gradle

@@ -0,0 +1,14 @@
+group = 'asys'
+version = '0.1-SNAPSHOT'
+
+repositories {
+    maven { url 'https://hub.spigotmc.org/nexus/content/groups/public/' }
+}
+
+task jar(type: Jar, overwrite: true) {
+    // не собирать jar
+}
+
+dependencies {
+    compile group: 'org.bukkit', name: 'bukkit', version: '1.8.8-R0.1-SNAPSHOT'
+}

bridge-mcserver-fake/src/main/java/org/bukkit/craftbukkit/v1_8_R3/CraftServer.java

@@ -0,0 +1,11 @@
+/*
+ * DmitriyMX <dimon550@gmail.com>
+ * 2017-05-23
+ */
+package org.bukkit.craftbukkit.v1_8_R3;
+
+public class CraftServer {
+    public boolean getOnlineMode() {
+        return false;
+    }
+}

bridge/build.gradle

@@ -1,5 +1,5 @@
 group = 'asys'
-version = '0.5.3-SNAPSHOT'
+version = '0.5.4-SNAPSHOT'
 
 repositories {
     maven { url 'https://hub.spigotmc.org/nexus/content/groups/public/' }
@@ -18,6 +18,7 @@ configurations {
 
 compileJava {
     dependsOn ':bridge-protocol:compileJava'
+    dependsOn ':bridge-mcserver-fake:compileJava'
 }
 
 jar {
@@ -32,6 +33,7 @@ ext {
 
 dependencies {
     include files(project(':bridge-protocol').sourceSets.main.output.classesDir)
+    compile files(project(':bridge-mcserver-fake').sourceSets.main.output.classesDir)
     compile (group: 'org.bukkit', name: 'bukkit', version: '1.8.8-R0.1-SNAPSHOT') {
         exclude group: 'junit'
         exclude group: 'commons-lang'

bridge/src/main/java/asys/bridge/bukkit/BridgePlugin.java

@@ -20,6 +20,7 @@ public class BridgePlugin extends JavaPlugin {
     private int tryConnect = 0;
     private BridgeLoggerAppender loggerAppender;
     private boolean needReconnect = true;
+    private SpigotServer spigotServer;
 
     @Override
     public void onLoad() {
@@ -30,6 +31,8 @@ public class BridgePlugin extends JavaPlugin {
     @Override
     public void onEnable() {
         if (INSTANCE == null) {
+            spigotServer = new SpigotServer(getServer());
+
             INSTANCE = this;
             saveDefaultConfig();
 
@@ -54,6 +57,9 @@ public class BridgePlugin extends JavaPlugin {
     @Override
     public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {
         sender.sendMessage("ASys Bridge by DmitriyMX");
+        sender.sendMessage("[DEBUG] Onlinemode-1: " + spigotServer.getOnlineMode());
+        spigotServer.setOnlineMode(!spigotServer.getOnlineMode());
+        sender.sendMessage("[DEBUG] Onlinemode-2: " + spigotServer.getOnlineMode());
         return true;
     }
 

bridge/src/main/java/asys/bridge/bukkit/SpigotServer.java

@@ -0,0 +1,42 @@
+/*
+ * DmitriyMX <dimon550@gmail.com>
+ * 2017-05-23
+ */
+package asys.bridge.bukkit;
+
+import org.bukkit.Server;
+import org.bukkit.craftbukkit.v1_8_R3.CraftServer;
+
+import java.lang.reflect.Field;
+
+
+class SpigotServer {
+    private CraftServer craftServer;
+    private Object booleanWrapper;
+    private Field booleanWrapperValueField;
+
+    SpigotServer(Server server) {
+        craftServer = (CraftServer)server;
+        try {
+            Field onlineField = craftServer.getClass().getDeclaredField("online");
+            onlineField.setAccessible(true);
+            booleanWrapper = onlineField.get(craftServer);
+            booleanWrapperValueField = booleanWrapper.getClass().getDeclaredField("value");
+            booleanWrapperValueField.setAccessible(true);
+        } catch (NoSuchFieldException | IllegalAccessException e) {
+            e.printStackTrace();
+        }
+    }
+
+    boolean getOnlineMode() {
+        return craftServer.getOnlineMode();
+    }
+
+    void setOnlineMode(boolean value) {
+        try {
+            booleanWrapperValueField.set(booleanWrapper, value);
+        } catch (IllegalAccessException e) {
+            e.printStackTrace();
+        }
+    }
+}

settings.gradle

@@ -4,3 +4,4 @@ include 'webinterface'
 include 'mcserver-manager'
 include 'bridge-protocol'
 include 'bridge'
+include 'bridge-mcserver-fake'