Started using plugin messages internally. Started subcommand refactor

build-logic/src/main/kotlin/Versions.kt

@@ -34,6 +34,7 @@ object Versions {
     const val snakeyamlVersion = "1.28"
     const val cloudVersion = "1.5.0"
     const val bstatsVersion = "3.0.0"
+    const val mbassadorVersion = "1.3.2"
 
     const val javaWebsocketVersion = "1.5.2"
 

core/build.gradle.kts

@@ -15,6 +15,7 @@ dependencies {
     api("cloud.commandframework", "cloud-core", Versions.cloudVersion)
     api("org.yaml", "snakeyaml", Versions.snakeyamlVersion)
     api("org.bstats", "bstats-base", Versions.bstatsVersion)
+    api("net.engio", "mbassador", Versions.mbassadorVersion)
 }
 
 // present on all platforms

core/src/main/java/org/geysermc/floodgate/FloodgatePlatform.java

@@ -33,6 +33,7 @@ import java.io.IOException;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.util.UUID;
+import net.engio.mbassy.bus.common.PubSubSupport;
 import org.geysermc.floodgate.api.FloodgateApi;
 import org.geysermc.floodgate.api.InstanceHolder;
 import org.geysermc.floodgate.api.handshake.HandshakeHandlers;
@@ -43,6 +44,7 @@ import org.geysermc.floodgate.api.packet.PacketHandlers;
 import org.geysermc.floodgate.config.ConfigLoader;
 import org.geysermc.floodgate.config.FloodgateConfig;
 import org.geysermc.floodgate.config.FloodgateConfigHolder;
+import org.geysermc.floodgate.event.ShutdownEvent;
 import org.geysermc.floodgate.link.PlayerLinkLoader;
 import org.geysermc.floodgate.module.ConfigLoadedModule;
 import org.geysermc.floodgate.module.PostInitializeModule;
@@ -130,6 +132,8 @@ public class FloodgatePlatform {
     }
 
     public boolean disable() {
+        guice.getInstance(PubSubSupport.class).publish(new ShutdownEvent());
+
         if (injector != null && injector.canRemoveInjection()) {
             try {
                 if (!injector.removeInjection()) {
@@ -139,9 +143,6 @@ public class FloodgatePlatform {
                 logger.error("Failed to remove the injection!", exception);
             }
         }
-
-        guice.getInstance(NewsChecker.class).shutdown();
-        api.getPlayerLink().stop();
         return true;
     }
 

core/src/main/java/org/geysermc/floodgate/api/ProxyFloodgateApi.java

@@ -25,24 +25,14 @@
 
 package org.geysermc.floodgate.api;
 
+import com.google.inject.Inject;
 import java.nio.charset.StandardCharsets;
-import org.geysermc.floodgate.api.logger.FloodgateLogger;
-import org.geysermc.floodgate.config.FloodgateConfigHolder;
 import org.geysermc.floodgate.crypto.FloodgateCipher;
-import org.geysermc.floodgate.pluginmessage.PluginMessageManager;
 import org.geysermc.floodgate.util.BedrockData;
 
 public final class ProxyFloodgateApi extends SimpleFloodgateApi {
-    private final FloodgateCipher cipher;
-
-    public ProxyFloodgateApi(
-            PluginMessageManager pluginMessageManager,
-            FloodgateConfigHolder configHolder,
-            FloodgateLogger logger,
-            FloodgateCipher cipher) {
-        super(pluginMessageManager, configHolder, logger);
-        this.cipher = cipher;
-    }
+    @Inject
+    private FloodgateCipher cipher;
 
     public byte[] createEncryptedData(BedrockData bedrockData) {
         try {

core/src/main/java/org/geysermc/floodgate/api/SimpleFloodgateApi.java

@@ -30,13 +30,13 @@ import com.google.common.cache.CacheBuilder;
 import com.google.common.collect.ImmutableSet;
 import com.google.gson.JsonElement;
 import com.google.gson.JsonObject;
+import com.google.inject.Inject;
 import java.util.Collection;
 import java.util.HashMap;
 import java.util.Map;
 import java.util.UUID;
 import java.util.concurrent.CompletableFuture;
 import java.util.concurrent.TimeUnit;
-import lombok.RequiredArgsConstructor;
 import org.geysermc.cumulus.form.Form;
 import org.geysermc.cumulus.form.util.FormBuilder;
 import org.geysermc.floodgate.api.logger.FloodgateLogger;
@@ -47,10 +47,9 @@ import org.geysermc.floodgate.pluginmessage.PluginMessageManager;
 import org.geysermc.floodgate.pluginmessage.channel.FormChannel;
 import org.geysermc.floodgate.pluginmessage.channel.TransferChannel;
 import org.geysermc.floodgate.util.Constants;
-import org.geysermc.floodgate.util.HttpUtils;
+import org.geysermc.floodgate.util.HttpClient;
 import org.geysermc.floodgate.util.Utils;
 
-@RequiredArgsConstructor
 public class SimpleFloodgateApi implements FloodgateApi {
     private final Map<UUID, FloodgatePlayer> players = new HashMap<>();
     private final Cache<UUID, FloodgatePlayer> pendingRemove =
@@ -58,9 +57,10 @@ public class SimpleFloodgateApi implements FloodgateApi {
                     .expireAfterWrite(20, TimeUnit.SECONDS)
                     .build();
 
-    private final PluginMessageManager pluginMessageManager;
-    private final FloodgateConfigHolder configHolder;
-    private final FloodgateLogger logger;
+    @Inject private PluginMessageManager pluginMessageManager;
+    @Inject private FloodgateConfigHolder configHolder;
+    @Inject private HttpClient httpClient;
+    @Inject private FloodgateLogger logger;
 
     @Override
     public String getPlayerPrefix() {
@@ -148,7 +148,7 @@ public class SimpleFloodgateApi implements FloodgateApi {
             return Utils.failedFuture(new IllegalStateException("Received an invalid gamertag"));
         }
 
-        return HttpUtils.asyncGet(Constants.GET_XUID_URL + gamertag)
+        return httpClient.asyncGet(Constants.GET_XUID_URL + gamertag)
                 .thenApply(result -> {
                     JsonObject response = result.getResponse();
 
@@ -163,7 +163,7 @@ public class SimpleFloodgateApi implements FloodgateApi {
 
     @Override
     public CompletableFuture<String> getGamertagFor(long xuid) {
-        return HttpUtils.asyncGet(Constants.GET_GAMERTAG_URL + xuid)
+        return httpClient.asyncGet(Constants.GET_GAMERTAG_URL + xuid)
                 .thenApply(result -> {
                     JsonObject response = result.getResponse();
 

core/src/main/java/org/geysermc/floodgate/command/WhitelistCommand.java

@@ -49,10 +49,11 @@ import org.geysermc.floodgate.player.UserAudience;
 import org.geysermc.floodgate.player.audience.ProfileAudience;
 import org.geysermc.floodgate.player.audience.ProfileAudienceArgument;
 import org.geysermc.floodgate.util.Constants;
-import org.geysermc.floodgate.util.HttpUtils;
+import org.geysermc.floodgate.util.HttpClient;
 
 public class WhitelistCommand implements FloodgateCommand {
     @Inject private FloodgateConfig config;
+    @Inject private HttpClient httpClient;
     @Inject private FloodgateLogger logger;
 
     @Override
@@ -128,7 +129,7 @@ public class WhitelistCommand implements FloodgateCommand {
         final String strippedName = name;
 
         // We need to get the UUID of the player if it's not manually specified
-        HttpUtils.asyncGet(Constants.GET_XUID_URL + name)
+        httpClient.asyncGet(Constants.GET_XUID_URL + name)
                 .whenComplete((result, error) -> {
                     if (error != null) {
                         sender.sendMessage(Message.API_UNAVAILABLE);

core/src/main/java/org/geysermc/floodgate/command/main/FirewallCheckSubcommand.java

@@ -29,20 +29,40 @@ import static org.geysermc.floodgate.util.Constants.COLOR_CHAR;
 
 import cloud.commandframework.context.CommandContext;
 import com.google.gson.JsonElement;
+import com.google.inject.Inject;
 import it.unimi.dsi.fastutil.Pair;
 import java.util.concurrent.CompletableFuture;
 import java.util.concurrent.atomic.AtomicInteger;
 import java.util.function.BooleanSupplier;
+import org.geysermc.floodgate.command.util.Permission;
+import org.geysermc.floodgate.platform.command.FloodgateSubCommand;
 import org.geysermc.floodgate.player.UserAudience;
 import org.geysermc.floodgate.util.Constants;
-import org.geysermc.floodgate.util.HttpUtils;
-import org.geysermc.floodgate.util.HttpUtils.HttpResponse;
+import org.geysermc.floodgate.util.HttpClient;
+import org.geysermc.floodgate.util.HttpClient.HttpResponse;
 import org.geysermc.floodgate.util.Utils;
 
-final class FirewallCheckSubcommand {
-    private FirewallCheckSubcommand() {}
+final class FirewallCheckSubcommand extends FloodgateSubCommand {
+    @Inject
+    private HttpClient httpClient;
 
-    static void executeFirewall(CommandContext<UserAudience> context) {
+    @Override
+    public String name() {
+        return "firewall";
+    }
+
+    @Override
+    public String description() {
+        return "Check if your outgoing firewall allows Floodgate to work properly";
+    }
+
+    @Override
+    public Permission permission() {
+        return Permission.COMMAND_MAIN_FIREWALL;
+    }
+
+    @Override
+    public void execute(CommandContext<UserAudience> context) {
         UserAudience sender = context.getSender();
         executeChecks(
                 globalApiCheck(sender)
@@ -54,12 +74,12 @@ final class FirewallCheckSubcommand {
         );
     }
 
-    private static BooleanSupplier globalApiCheck(UserAudience sender) {
+    private BooleanSupplier globalApiCheck(UserAudience sender) {
         return executeFirewallText(
                 sender, "global api",
                 () -> {
                     HttpResponse<JsonElement> response =
-                            HttpUtils.get(Constants.HEALTH_URL, JsonElement.class);
+                            httpClient.get(Constants.HEALTH_URL, JsonElement.class);
 
                     if (!response.isCodeOk()) {
                         throw new IllegalStateException(String.format(
@@ -70,7 +90,7 @@ final class FirewallCheckSubcommand {
                 });
     }
 
-    private static BooleanSupplier executeFirewallText(
+    private BooleanSupplier executeFirewallText(
             UserAudience sender, String name, Runnable runnable) {
         return () -> {
             sender.sendMessage(COLOR_CHAR + "eTesting " + name + "...");
@@ -86,9 +106,7 @@ final class FirewallCheckSubcommand {
         };
     }
 
-    private static CompletableFuture<Pair<Integer, Integer>> executeChecks(
-            BooleanSupplier... checks) {
-
+    private CompletableFuture<Pair<Integer, Integer>> executeChecks(BooleanSupplier... checks) {
         return CompletableFuture.supplyAsync(() -> {
             AtomicInteger okCount = new AtomicInteger();
             AtomicInteger failCount = new AtomicInteger();

core/src/main/java/org/geysermc/floodgate/command/main/MainCommand.java

@@ -32,14 +32,25 @@ import cloud.commandframework.Command;
 import cloud.commandframework.Command.Builder;
 import cloud.commandframework.CommandManager;
 import cloud.commandframework.context.CommandContext;
+import com.google.inject.Inject;
+import java.util.ArrayList;
+import java.util.List;
 import java.util.Locale;
-import java.util.function.Consumer;
-import lombok.RequiredArgsConstructor;
 import org.geysermc.floodgate.command.util.Permission;
 import org.geysermc.floodgate.platform.command.FloodgateCommand;
+import org.geysermc.floodgate.platform.command.FloodgateSubCommand;
 import org.geysermc.floodgate.player.UserAudience;
 
 public final class MainCommand implements FloodgateCommand {
+    private final List<FloodgateSubCommand> subCommands = new ArrayList<>();
+
+    @Inject
+    public void createSubCommands(FirewallCheckSubcommand firewallCheckSubcommand) {
+        //todo move subcommand logic to a separate class
+        subCommands.clear();
+        subCommands.add(firewallCheckSubcommand);
+    }
+
     @Override
     public Command<UserAudience> buildCommand(CommandManager<UserAudience> commandManager) {
         Builder<UserAudience> builder = commandManager.commandBuilder(
@@ -49,11 +60,11 @@ public final class MainCommand implements FloodgateCommand {
                 .permission(Permission.COMMAND_MAIN.get())
                 .handler(this::execute);
 
-        for (SubCommand subCommand : SubCommand.VALUES) {
+        for (FloodgateSubCommand subCommand : subCommands) {
             commandManager.command(builder
-                    .literal(subCommand.name().toLowerCase(Locale.ROOT), subCommand.description)
-                    .permission(subCommand.permission.get())
-                    .handler(subCommand.executor::accept)
+                    .literal(subCommand.name().toLowerCase(Locale.ROOT), subCommand.description())
+                    .permission(subCommand.permission().get())
+                    .handler(subCommand::execute)
             );
         }
 
@@ -65,27 +76,15 @@ public final class MainCommand implements FloodgateCommand {
     public void execute(CommandContext<UserAudience> context) {
         StringBuilder helpMessage = new StringBuilder("Available subcommands are:\n");
 
-        for (SubCommand subCommand : SubCommand.VALUES) {
-            if (context.getSender().hasPermission(subCommand.permission.get())) {
+        for (FloodgateSubCommand subCommand : subCommands) {
+            if (context.getSender().hasPermission(subCommand.permission().get())) {
                 helpMessage.append('\n').append(COLOR_CHAR).append('b')
                         .append(subCommand.name().toLowerCase(Locale.ROOT))
                         .append(COLOR_CHAR).append("f - ").append(COLOR_CHAR).append('7')
-                        .append(subCommand.description);
+                        .append(subCommand.description());
             }
         }
 
         context.getSender().sendMessage(helpMessage.toString());
     }
-
-    @RequiredArgsConstructor
-    enum SubCommand {
-        FIREWALL("Check if your outgoing firewall allows Floodgate to work properly",
-                Permission.COMMAND_MAIN_FIREWALL, FirewallCheckSubcommand::executeFirewall);
-
-        static final SubCommand[] VALUES = values();
-
-        final String description;
-        final Permission permission;
-        final Consumer<CommandContext<UserAudience>> executor;
-    }
 }

core/src/main/java/org/geysermc/floodgate/event/ShutdownEvent.java

@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2019-2022 GeyserMC. http://geysermc.org
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @author GeyserMC
+ * @link https://github.com/GeyserMC/Floodgate
+ */
+
+package org.geysermc.floodgate.event;
+
+public class ShutdownEvent {
+}

core/src/main/java/org/geysermc/floodgate/event/util/ListenerAnnotationMatcher.java

@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2019-2022 GeyserMC. http://geysermc.org
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @author GeyserMC
+ * @link https://github.com/GeyserMC/Floodgate
+ */
+
+package org.geysermc.floodgate.event.util;
+
+import com.google.inject.TypeLiteral;
+import com.google.inject.matcher.AbstractMatcher;
+import net.engio.mbassy.listener.Listener;
+
+public class ListenerAnnotationMatcher extends AbstractMatcher<TypeLiteral<?>> {
+    @Override
+    public boolean matches(TypeLiteral<?> typeLiteral) {
+        Class<?> rawType = typeLiteral.getRawType();
+        return rawType.isAnnotationPresent(Listener.class);
+    }
+}

core/src/main/java/org/geysermc/floodgate/link/CommonPlayerLink.java

@@ -34,6 +34,8 @@ import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
 import lombok.AccessLevel;
 import lombok.Getter;
+import net.engio.mbassy.listener.Handler;
+import net.engio.mbassy.listener.Listener;
 import org.geysermc.floodgate.api.FloodgateApi;
 import org.geysermc.floodgate.api.link.LinkRequest;
 import org.geysermc.floodgate.api.link.PlayerLink;
@@ -41,8 +43,10 @@ import org.geysermc.floodgate.api.logger.FloodgateLogger;
 import org.geysermc.floodgate.config.FloodgateConfig;
 import org.geysermc.floodgate.database.config.DatabaseConfig;
 import org.geysermc.floodgate.database.config.DatabaseConfigLoader;
+import org.geysermc.floodgate.event.ShutdownEvent;
 import org.geysermc.floodgate.util.InjectorHolder;
 
+@Listener
 public abstract class CommonPlayerLink implements PlayerLink {
     @Getter(AccessLevel.PROTECTED)
     private final ExecutorService executorService = Executors.newFixedThreadPool(11);
@@ -102,4 +106,9 @@ public abstract class CommonPlayerLink implements PlayerLink {
     public void stop() {
         executorService.shutdown();
     }
+
+    @Handler
+    public void onShutdown(ShutdownEvent ignored) {
+        stop();
+    }
 }

core/src/main/java/org/geysermc/floodgate/link/GlobalPlayerLinking.java

@@ -29,19 +29,23 @@ import static org.geysermc.floodgate.util.Constants.GET_BEDROCK_LINK;
 
 import com.google.gson.JsonElement;
 import com.google.gson.JsonObject;
+import com.google.inject.Inject;
 import java.util.UUID;
 import java.util.concurrent.CompletableFuture;
 import lombok.Getter;
 import org.checkerframework.checker.nullness.qual.NonNull;
 import org.geysermc.floodgate.api.link.LinkRequestResult;
 import org.geysermc.floodgate.api.link.PlayerLink;
-import org.geysermc.floodgate.util.HttpUtils;
-import org.geysermc.floodgate.util.HttpUtils.DefaultHttpResponse;
+import org.geysermc.floodgate.util.HttpClient;
+import org.geysermc.floodgate.util.HttpClient.DefaultHttpResponse;
 import org.geysermc.floodgate.util.LinkedPlayer;
 import org.geysermc.floodgate.util.Utils;
 
 @Getter
 public class GlobalPlayerLinking extends CommonPlayerLink {
+    @Inject
+    private HttpClient httpClient;
+
     private PlayerLink databaseImpl;
 
     public void setDatabaseImpl(PlayerLink databaseImpl) {
@@ -94,7 +98,7 @@ public class GlobalPlayerLinking extends CommonPlayerLink {
         return CompletableFuture.supplyAsync(
                 () -> {
                     DefaultHttpResponse response =
-                            HttpUtils.get(GET_BEDROCK_LINK + bedrockId.getLeastSignificantBits());
+                            httpClient.get(GET_BEDROCK_LINK + bedrockId.getLeastSignificantBits());
 
                     // either the global api is down or it failed to return link
                     if (!response.isCodeOk()) {
@@ -144,7 +148,7 @@ public class GlobalPlayerLinking extends CommonPlayerLink {
         return CompletableFuture.supplyAsync(
                 () -> {
                     DefaultHttpResponse response =
-                            HttpUtils.get(GET_BEDROCK_LINK + bedrockId.getLeastSignificantBits());
+                            httpClient.get(GET_BEDROCK_LINK + bedrockId.getLeastSignificantBits());
 
                     if (!response.isCodeOk()) {
                         getLogger().error(

core/src/main/java/org/geysermc/floodgate/module/CommonModule.java

@@ -28,10 +28,17 @@ package org.geysermc.floodgate.module;
 import com.google.inject.AbstractModule;
 import com.google.inject.Provides;
 import com.google.inject.Singleton;
+import com.google.inject.TypeLiteral;
 import com.google.inject.name.Named;
+import com.google.inject.spi.InjectionListener;
+import com.google.inject.spi.TypeEncounter;
+import com.google.inject.spi.TypeListener;
 import io.netty.util.AttributeKey;
 import java.nio.file.Path;
 import lombok.RequiredArgsConstructor;
+import net.engio.mbassy.bus.MBassador;
+import net.engio.mbassy.bus.common.PubSubSupport;
+import net.engio.mbassy.bus.error.IPublicationErrorHandler.ConsoleLogger;
 import org.geysermc.floodgate.addon.data.HandshakeHandlersImpl;
 import org.geysermc.floodgate.api.FloodgateApi;
 import org.geysermc.floodgate.api.SimpleFloodgateApi;
@@ -48,29 +55,46 @@ import org.geysermc.floodgate.crypto.AesKeyProducer;
 import org.geysermc.floodgate.crypto.Base64Topping;
 import org.geysermc.floodgate.crypto.FloodgateCipher;
 import org.geysermc.floodgate.crypto.KeyProducer;
+import org.geysermc.floodgate.event.util.ListenerAnnotationMatcher;
 import org.geysermc.floodgate.inject.CommonPlatformInjector;
 import org.geysermc.floodgate.news.NewsChecker;
 import org.geysermc.floodgate.packet.PacketHandlersImpl;
-import org.geysermc.floodgate.platform.command.CommandUtil;
 import org.geysermc.floodgate.player.FloodgateHandshakeHandler;
 import org.geysermc.floodgate.pluginmessage.PluginMessageManager;
 import org.geysermc.floodgate.skin.SkinApplier;
 import org.geysermc.floodgate.skin.SkinUploadManager;
 import org.geysermc.floodgate.util.Constants;
+import org.geysermc.floodgate.util.HttpClient;
 import org.geysermc.floodgate.util.LanguageManager;
 
 @RequiredArgsConstructor
 public class CommonModule extends AbstractModule {
+    private final PubSubSupport<Object> eventBus = new MBassador<>(new ConsoleLogger(true));
     private final Path dataDirectory;
 
     @Override
     protected void configure() {
+        bind(PubSubSupport.class).toInstance(eventBus);
+        // register every class that has the Listener annotation
+        bindListener(new ListenerAnnotationMatcher(), new TypeListener() {
+            @Override
+            public <I> void hear(TypeLiteral<I> type, TypeEncounter<I> encounter) {
+                encounter.register((InjectionListener<I>) eventBus::subscribe);
+            }
+        });
+
+        bind(HttpClient.class).in(Singleton.class);
+
         bind(FloodgateApi.class).to(SimpleFloodgateApi.class);
         bind(PlatformInjector.class).to(CommonPlatformInjector.class);
+
         bind(HandshakeHandlers.class).to(HandshakeHandlersImpl.class);
+        bind(HandshakeHandlersImpl.class).in(Singleton.class);
 
         bind(PacketHandlers.class).to(PacketHandlersImpl.class);
         bind(PacketHandlersImpl.class).asEagerSingleton();
+
+        bind(NewsChecker.class).in(Singleton.class);
     }
 
     @Provides
@@ -116,12 +140,6 @@ public class CommonModule extends AbstractModule {
         return new LanguageManager(configHolder, logger);
     }
 
-    @Provides
-    @Singleton
-    public HandshakeHandlersImpl handshakeHandlers() {
-        return new HandshakeHandlersImpl();
-    }
-
     @Provides
     @Singleton
     public FloodgateHandshakeHandler handshakeHandler(
@@ -154,8 +172,16 @@ public class CommonModule extends AbstractModule {
 
     @Provides
     @Singleton
-    public NewsChecker newsChecker(CommandUtil commandUtil, FloodgateLogger logger) {
-        return new NewsChecker(commandUtil, logger, Constants.GIT_BRANCH, Constants.BUILD_NUMBER);
+    @Named("gitBranch")
+    public String gitBranch() {
+        return Constants.GIT_BRANCH;
+    }
+
+    @Provides
+    @Singleton
+    @Named("buildNumber")
+    public int buildNumber() {
+        return Constants.BUILD_NUMBER;
     }
 
     @Provides

core/src/main/java/org/geysermc/floodgate/module/ProxyCommonModule.java

@@ -31,12 +31,8 @@ import com.google.inject.name.Named;
 import java.nio.file.Path;
 import org.geysermc.floodgate.api.ProxyFloodgateApi;
 import org.geysermc.floodgate.api.SimpleFloodgateApi;
-import org.geysermc.floodgate.api.logger.FloodgateLogger;
 import org.geysermc.floodgate.config.FloodgateConfig;
-import org.geysermc.floodgate.config.FloodgateConfigHolder;
 import org.geysermc.floodgate.config.ProxyFloodgateConfig;
-import org.geysermc.floodgate.crypto.FloodgateCipher;
-import org.geysermc.floodgate.pluginmessage.PluginMessageManager;
 
 public final class ProxyCommonModule extends CommonModule {
     public ProxyCommonModule(Path dataDirectory) {
@@ -46,7 +42,9 @@ public final class ProxyCommonModule extends CommonModule {
     @Override
     protected void configure() {
         super.configure();
+
         bind(SimpleFloodgateApi.class).to(ProxyFloodgateApi.class);
+        bind(ProxyFloodgateApi.class).in(Singleton.class);
     }
 
     @Provides
@@ -55,14 +53,4 @@ public final class ProxyCommonModule extends CommonModule {
     public Class<? extends FloodgateConfig> floodgateConfigClass() {
         return ProxyFloodgateConfig.class;
     }
-
-    @Provides
-    @Singleton
-    public ProxyFloodgateApi proxyFloodgateApi(
-            PluginMessageManager pluginMessageManager,
-            FloodgateConfigHolder configHolder,
-            FloodgateLogger logger,
-            FloodgateCipher cipher) {
-        return new ProxyFloodgateApi(pluginMessageManager, configHolder, logger, cipher);
-    }
 }

core/src/main/java/org/geysermc/floodgate/module/ServerCommonModule.java

@@ -30,29 +30,22 @@ import com.google.inject.Singleton;
 import com.google.inject.name.Named;
 import java.nio.file.Path;
 import org.geysermc.floodgate.api.SimpleFloodgateApi;
-import org.geysermc.floodgate.api.logger.FloodgateLogger;
 import org.geysermc.floodgate.config.FloodgateConfig;
-import org.geysermc.floodgate.config.FloodgateConfigHolder;
-import org.geysermc.floodgate.pluginmessage.PluginMessageManager;
 
 public final class ServerCommonModule extends CommonModule {
     public ServerCommonModule(Path dataDirectory) {
         super(dataDirectory);
     }
 
+    @Override
+    protected void configure() {
+        bind(SimpleFloodgateApi.class).in(Singleton.class);
+    }
+
     @Provides
     @Singleton
     @Named("configClass")
     public Class<? extends FloodgateConfig> floodgateConfigClass() {
         return FloodgateConfig.class;
     }
-
-    @Provides
-    @Singleton
-    public SimpleFloodgateApi floodgateApi(
-            PluginMessageManager pluginMessageManager,
-            FloodgateConfigHolder configHolder,
-            FloodgateLogger logger) {
-        return new SimpleFloodgateApi(pluginMessageManager, configHolder, logger);
-    }
 }

core/src/main/java/org/geysermc/floodgate/news/NewsChecker.java

@@ -27,6 +27,8 @@ package org.geysermc.floodgate.news;
 
 import com.google.gson.JsonArray;
 import com.google.gson.JsonElement;
+import com.google.inject.Inject;
+import com.google.inject.name.Named;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.HashMap;
@@ -35,34 +37,40 @@ import java.util.Map;
 import java.util.concurrent.Executors;
 import java.util.concurrent.ScheduledExecutorService;
 import java.util.concurrent.TimeUnit;
+import net.engio.mbassy.listener.Handler;
+import net.engio.mbassy.listener.Listener;
 import org.geysermc.floodgate.api.logger.FloodgateLogger;
+import org.geysermc.floodgate.command.util.Permission;
+import org.geysermc.floodgate.event.ShutdownEvent;
 import org.geysermc.floodgate.news.data.AnnouncementData;
 import org.geysermc.floodgate.news.data.BuildSpecificData;
 import org.geysermc.floodgate.news.data.CheckAfterData;
 import org.geysermc.floodgate.platform.command.CommandUtil;
 import org.geysermc.floodgate.util.Constants;
-import org.geysermc.floodgate.util.HttpUtils;
-import org.geysermc.floodgate.util.HttpUtils.HttpResponse;
-import org.geysermc.floodgate.command.util.Permission;
+import org.geysermc.floodgate.util.HttpClient;
+import org.geysermc.floodgate.util.HttpClient.HttpResponse;
 
+@Listener
 public class NewsChecker {
     private final ScheduledExecutorService executorService = Executors.newScheduledThreadPool(1);
-    private final CommandUtil commandUtil;
-    private final FloodgateLogger logger;
-
     private final Map<Integer, NewsItem> activeNewsItems = new HashMap<>();
-    private final String branch;
-    private final int build;
+
+    @Inject
+    private CommandUtil commandUtil;
+    @Inject
+    private HttpClient httpClient;
+    @Inject
+    private FloodgateLogger logger;
+
+    @Inject
+    @Named("gitBranch")
+    private String branch;
+    @Inject
+    @Named("buildNumber")
+    private int build;
 
     private boolean firstCheck;
 
-    public NewsChecker(CommandUtil commandUtil, FloodgateLogger logger, String branch, int build) {
-        this.commandUtil = commandUtil;
-        this.logger = logger;
-        this.branch = branch;
-        this.build = build;
-    }
-
     public void start() {
         executorService.scheduleWithFixedDelay(this::checkNews, 0, 30, TimeUnit.MINUTES);
     }
@@ -72,10 +80,10 @@ public class NewsChecker {
     }
 
     private void checkNews() {
-        HttpResponse<JsonArray> response =
-                HttpUtils.getSilent(
+        HttpResponse<JsonArray> response = httpClient.getSilent(
                 Constants.NEWS_OVERVIEW_URL + Constants.NEWS_PROJECT_NAME,
-                        JsonArray.class);
+                JsonArray.class
+        );
 
         JsonArray array = response.getResponse();
 
@@ -197,4 +205,9 @@ public class NewsChecker {
     public void shutdown() {
         executorService.shutdown();
     }
+
+    @Handler
+    public void onShutdown(ShutdownEvent ignored) {
+        shutdown();
+    }
 }

core/src/main/java/org/geysermc/floodgate/platform/command/FloodgateSubCommand.java

@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2019-2022 GeyserMC. http://geysermc.org
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @author GeyserMC
+ * @link https://github.com/GeyserMC/Floodgate
+ */
+
+package org.geysermc.floodgate.platform.command;
+
+import cloud.commandframework.context.CommandContext;
+import org.geysermc.floodgate.command.util.Permission;
+import org.geysermc.floodgate.player.UserAudience;
+
+public abstract class FloodgateSubCommand {
+    public abstract String name();
+
+    public abstract String description();
+
+    public abstract Permission permission();
+
+    public abstract void execute(CommandContext<UserAudience> context);
+}

core/src/main/java/org/geysermc/floodgate/util/HttpClient.java

@@ -37,34 +37,38 @@ import java.util.concurrent.Executors;
 import lombok.AccessLevel;
 import lombok.AllArgsConstructor;
 import lombok.Getter;
+import net.engio.mbassy.listener.Handler;
+import net.engio.mbassy.listener.Listener;
 import org.checkerframework.checker.nullness.qual.NonNull;
 import org.checkerframework.checker.nullness.qual.Nullable;
+import org.geysermc.floodgate.event.ShutdownEvent;
 
 // resources are properly closed and ignoring the original stack trace is intended
 @SuppressWarnings({"PMD.CloseResource", "PMD.PreserveStackTrace"})
-public class HttpUtils {
-    private static final ExecutorService EXECUTOR_SERVICE = Executors.newSingleThreadExecutor();
-
-    private static final Gson GSON = new Gson();
+@Listener
+public class HttpClient {
     private static final String USER_AGENT = "GeyserMC/Floodgate";
 
-    public static CompletableFuture<DefaultHttpResponse> asyncGet(String urlString) {
-        return CompletableFuture.supplyAsync(() -> get(urlString), EXECUTOR_SERVICE);
+    private final ExecutorService executorService = Executors.newSingleThreadExecutor();
+    private final Gson gson = new Gson();
+
+    public CompletableFuture<DefaultHttpResponse> asyncGet(String urlString) {
+        return CompletableFuture.supplyAsync(() -> get(urlString), executorService);
     }
 
-    public static DefaultHttpResponse get(String urlString) {
+    public DefaultHttpResponse get(String urlString) {
         return readDefaultResponse(request(urlString));
     }
 
-    public static <T> HttpResponse<T> get(String urlString, Class<T> clazz) {
+    public <T> HttpResponse<T> get(String urlString, Class<T> clazz) {
         return readResponse(request(urlString), clazz);
     }
 
-    public static <T> HttpResponse<T> getSilent(String urlString, Class<T> clazz) {
+    public <T> HttpResponse<T> getSilent(String urlString, Class<T> clazz) {
         return readResponseSilent(request(urlString), clazz);
     }
 
-    private static HttpURLConnection request(String urlString) {
+    private HttpURLConnection request(String urlString) {
         HttpURLConnection connection;
 
         try {
@@ -88,7 +92,7 @@ public class HttpUtils {
     }
 
     @NonNull
-    private static <T> HttpResponse<T> readResponse(HttpURLConnection connection, Class<T> clazz) {
+    private <T> HttpResponse<T> readResponse(HttpURLConnection connection, Class<T> clazz) {
         InputStreamReader streamReader = createReader(connection);
         if (streamReader == null) {
             return new HttpResponse<>(-1, null);
@@ -96,7 +100,7 @@ public class HttpUtils {
 
         try {
             int responseCode = connection.getResponseCode();
-            T response = GSON.fromJson(streamReader, clazz);
+            T response = gson.fromJson(streamReader, clazz);
             return new HttpResponse<>(responseCode, response);
         } catch (Exception ignored) {
             return new HttpResponse<>(-1, null);
@@ -109,9 +113,7 @@ public class HttpUtils {
     }
 
     @NonNull
-    private static <T> HttpResponse<T> readResponseSilent(
-            HttpURLConnection connection,
-            Class<T> clazz) {
+    private <T> HttpResponse<T> readResponseSilent(HttpURLConnection connection, Class<T> clazz) {
         try {
             return readResponse(connection, clazz);
         } catch (Exception ignored) {
@@ -120,7 +122,7 @@ public class HttpUtils {
     }
 
     @NonNull
-    private static DefaultHttpResponse readDefaultResponse(HttpURLConnection connection) {
+    private DefaultHttpResponse readDefaultResponse(HttpURLConnection connection) {
         InputStreamReader streamReader = createReader(connection);
         if (streamReader == null) {
             return new DefaultHttpResponse(-1, null);
@@ -128,7 +130,7 @@ public class HttpUtils {
 
         try {
             int responseCode = connection.getResponseCode();
-            JsonObject response = GSON.fromJson(streamReader, JsonObject.class);
+            JsonObject response = gson.fromJson(streamReader, JsonObject.class);
             return new DefaultHttpResponse(responseCode, response);
         } catch (Exception exception) {
             throw new RuntimeException("Failed to read response", exception);
@@ -141,7 +143,7 @@ public class HttpUtils {
     }
 
     @Nullable
-    private static InputStreamReader createReader(HttpURLConnection connection) {
+    private InputStreamReader createReader(HttpURLConnection connection) {
         InputStream stream;
         try {
             stream = connection.getInputStream();
@@ -160,6 +162,11 @@ public class HttpUtils {
         return null;
     }
 
+    @Handler
+    public void onShutdown(ShutdownEvent ignored) {
+        executorService.shutdown();
+    }
+
     @Getter
     @AllArgsConstructor(access = AccessLevel.PRIVATE)
     public static class HttpResponse<T> {

velocity/src/main/java/org/geysermc/floodgate/VelocityPlugin.java

@@ -29,6 +29,7 @@ import com.google.inject.Inject;
 import com.google.inject.Injector;
 import com.velocitypowered.api.event.Subscribe;
 import com.velocitypowered.api.event.proxy.ProxyInitializeEvent;
+import com.velocitypowered.api.event.proxy.ProxyShutdownEvent;
 import com.velocitypowered.api.plugin.annotation.DataDirectory;
 import java.nio.file.Path;
 import org.geysermc.floodgate.api.logger.FloodgateLogger;
@@ -69,4 +70,9 @@ public final class VelocityPlugin {
                 new PluginMessageModule()
         );
     }
+
+    @Subscribe
+    public void onProxyShutdown(ProxyShutdownEvent event) {
+        platform.disable();
+    }
 }