User data pinning, version validation checks, fixes

bukkit/src/main/java/net/william278/husksync/BukkitHuskSync.java

@@ -77,6 +77,7 @@ public class BukkitHuskSync extends JavaPlugin implements HuskSync {
     public void onEnable() {
         // Process initialization stages
         CompletableFuture.supplyAsync(() -> {
+
             // Set the logging adapter and resource reader
             this.logger = new BukkitLogger(this.getLogger());
             this.resourceReader = new BukkitResourceReader(this);
@@ -117,12 +118,19 @@ public class BukkitHuskSync extends JavaPlugin implements HuskSync {
         }).thenApply(succeeded -> {
             // Prepare migrators
             if (succeeded) {
+                logger.debug("m0");
                 availableMigrators = new ArrayList<>();
+                logger.debug("m1");
                 availableMigrators.add(new LegacyMigrator(this));
+                logger.debug("m2");
                 final Plugin mySqlPlayerDataBridge = Bukkit.getPluginManager().getPlugin("MySqlPlayerDataBridge");
+                logger.debug("m3");
                 if (mySqlPlayerDataBridge != null) {
+                    logger.debug("m4");
                     availableMigrators.add(new MpdbMigrator(this, mySqlPlayerDataBridge));
+                    logger.debug("m5");
                 }
+                logger.debug("m6 - Successfully prepared migrators");
             }
             return succeeded;
         }).thenApply(succeeded -> {
@@ -198,17 +206,22 @@ public class BukkitHuskSync extends JavaPlugin implements HuskSync {
             // Check for updates
             if (succeeded && settings.getBooleanValue(Settings.ConfigOption.CHECK_FOR_UPDATES)) {
                 getLoggingAdapter().log(Level.INFO, "Checking for updates...");
-                new UpdateChecker(getVersion(), getLoggingAdapter()).logToConsole();
+                new UpdateChecker(getPluginVersion(), getLoggingAdapter()).logToConsole();
             }
             return succeeded;
         }).thenAccept(succeeded -> {
             // Handle failed initialization
             if (!succeeded) {
-                getLoggingAdapter().log(Level.SEVERE, "Failed to initialize HuskSync. " + "The plugin will now be disabled");
+                getLoggingAdapter().log(Level.SEVERE, "Failed to initialize HuskSync. The plugin will now be disabled");
                 getServer().getPluginManager().disablePlugin(this);
             } else {
-                getLoggingAdapter().log(Level.INFO, "Successfully enabled HuskSync v" + getVersion());
+                getLoggingAdapter().log(Level.INFO, "Successfully enabled HuskSync v" + getPluginVersion());
             }
+        }).exceptionally(exception -> {
+            getLoggingAdapter().log(Level.SEVERE, "An exception occurred initializing HuskSync. (" + exception.getMessage() + ") The plugin will now be disabled.");
+            exception.printStackTrace();
+            getServer().getPluginManager().disablePlugin(this);
+            return null;
         });
     }
 
@@ -217,7 +230,7 @@ public class BukkitHuskSync extends JavaPlugin implements HuskSync {
         if (this.eventListener != null) {
             this.eventListener.handlePluginDisable();
         }
-        getLoggingAdapter().log(Level.INFO, "Successfully disabled HuskSync v" + getVersion());
+        getLoggingAdapter().log(Level.INFO, "Successfully disabled HuskSync v" + getPluginVersion());
     }
 
     @Override
@@ -281,8 +294,13 @@ public class BukkitHuskSync extends JavaPlugin implements HuskSync {
     }
 
     @Override
-    public @NotNull String getVersion() {
-        return getDescription().getVersion();
+    public @NotNull Version getPluginVersion() {
+        return Version.pluginVersion(getDescription().getVersion());
+    }
+
+    @Override
+    public @NotNull Version getMinecraftVersion() {
+        return Version.minecraftVersion(Bukkit.getBukkitVersion());
     }
 
     @Override

bukkit/src/main/java/net/william278/husksync/listener/BukkitEventListener.java

@@ -53,12 +53,12 @@ public class BukkitEventListener extends EventListener implements Listener {
     public void onInventoryClose(@NotNull InventoryCloseEvent event) {
         if (event.getPlayer() instanceof Player player) {
             final OnlineUser user = BukkitPlayer.adapt(player);
-            if (huskSync.getDataEditor().isEditingInventoryData(user)) {
+            if (plugin.getDataEditor().isEditingInventoryData(user)) {
                 try {
                     BukkitSerializer.serializeItemStackArray(event.getInventory().getContents()).thenAccept(
                             serializedInventory -> super.handleMenuClose(user, new ItemData(serializedInventory)));
                 } catch (DataSerializationException e) {
-                    huskSync.getLoggingAdapter().log(Level.SEVERE,
+                    plugin.getLoggingAdapter().log(Level.SEVERE,
                             "Failed to serialize inventory data during menu close", e);
                 }
             }

bukkit/src/main/java/net/william278/husksync/migrator/LegacyMigrator.java

@@ -32,6 +32,8 @@ public class LegacyMigrator extends Migrator {
     private String sourcePlayersTable;
     private String sourceDataTable;
 
+    private final String minecraftVersion;
+
     public LegacyMigrator(@NotNull HuskSync plugin) {
         super(plugin);
         this.hslConverter = HSLConverter.getInstance();
@@ -42,6 +44,7 @@ public class LegacyMigrator extends Migrator {
         this.sourceDatabase = plugin.getSettings().getStringValue(Settings.ConfigOption.DATABASE_NAME);
         this.sourcePlayersTable = "husksync_players";
         this.sourceDataTable = "husksync_data";
+        this.minecraftVersion = plugin.getMinecraftVersion().getWithoutMeta();
     }
 
     @Override
@@ -110,7 +113,7 @@ public class LegacyMigrator extends Migrator {
                 }
                 plugin.getLoggingAdapter().log(Level.INFO, "Completed download of " + dataToMigrate.size() + " entries from the legacy database!");
                 plugin.getLoggingAdapter().log(Level.INFO, "Converting HuskSync 1.x data to the latest HuskSync user data format...");
-                dataToMigrate.forEach(data -> data.toUserData(hslConverter).thenAccept(convertedData ->
+                dataToMigrate.forEach(data -> data.toUserData(hslConverter, minecraftVersion).thenAccept(convertedData ->
                         plugin.getDatabase().ensureUser(data.user()).thenRun(() ->
                                 plugin.getDatabase().setUserData(data.user(), convertedData, DataSaveCause.LEGACY_MIGRATION)
                                         .exceptionally(exception -> {
@@ -246,7 +249,8 @@ public class LegacyMigrator extends Migrator {
                               @NotNull String serializedAdvancements, @NotNull String serializedLocation) {
 
         @NotNull
-        public CompletableFuture<UserData> toUserData(@NotNull HSLConverter converter) {
+        public CompletableFuture<UserData> toUserData(@NotNull HSLConverter converter,
+                                                      @NotNull String minecraftVersion) {
             return CompletableFuture.supplyAsync(() -> {
                 try {
                     final DataSerializer.StatisticData legacyStatisticData = converter
@@ -278,7 +282,8 @@ public class LegacyMigrator extends Migrator {
                             new ItemData(serializedInventory), new ItemData(serializedEnderChest),
                             new PotionEffectData(serializedPotionEffects), convertedAdvancements,
                             convertedStatisticData, convertedLocationData,
-                            new PersistentDataContainerData(new HashMap<>()));
+                            new PersistentDataContainerData(new HashMap<>()),
+                            minecraftVersion);
                 } catch (IOException e) {
                     throw new RuntimeException(e);
                 }

bukkit/src/main/java/net/william278/husksync/migrator/MpdbMigrator.java

@@ -35,6 +35,7 @@ public class MpdbMigrator extends Migrator {
     private String sourceInventoryTable;
     private String sourceEnderChestTable;
     private String sourceExperienceTable;
+    private final String minecraftVersion;
 
     public MpdbMigrator(@NotNull BukkitHuskSync plugin, @NotNull Plugin mySqlPlayerDataBridge) {
         super(plugin);
@@ -47,6 +48,8 @@ public class MpdbMigrator extends Migrator {
         this.sourceInventoryTable = "mpdb_inventory";
         this.sourceEnderChestTable = "mpdb_enderchest";
         this.sourceExperienceTable = "mpdb_experience";
+        this.minecraftVersion = plugin.getMinecraftVersion().getWithoutMeta();
+
     }
 
     @Override
@@ -106,7 +109,7 @@ public class MpdbMigrator extends Migrator {
                 }
                 plugin.getLoggingAdapter().log(Level.INFO, "Completed download of " + dataToMigrate.size() + " entries from the MySQLPlayerDataBridge database!");
                 plugin.getLoggingAdapter().log(Level.INFO, "Converting raw MySQLPlayerDataBridge data to HuskSync user data...");
-                dataToMigrate.forEach(data -> data.toUserData(mpdbConverter).thenAccept(convertedData ->
+                dataToMigrate.forEach(data -> data.toUserData(mpdbConverter, minecraftVersion).thenAccept(convertedData ->
                         plugin.getDatabase().ensureUser(data.user()).thenRun(() ->
                                         plugin.getDatabase().setUserData(data.user(), convertedData, DataSaveCause.MPDB_MIGRATION))
                                 .exceptionally(exception -> {
@@ -257,7 +260,8 @@ public class MpdbMigrator extends Migrator {
          * @return A {@link CompletableFuture} that will resolve to the converted {@link UserData} object
          */
         @NotNull
-        public CompletableFuture<UserData> toUserData(@NotNull MPDBConverter converter) {
+        public CompletableFuture<UserData> toUserData(@NotNull MPDBConverter converter,
+                                                      @NotNull String minecraftVersion) {
             return CompletableFuture.supplyAsync(() -> {
                 // Combine inventory and armour
                 final Inventory inventory = Bukkit.createInventory(null, InventoryType.PLAYER);
@@ -278,7 +282,8 @@ public class MpdbMigrator extends Migrator {
                         new StatisticsData(new HashMap<>(), new HashMap<>(), new HashMap<>(), new HashMap<>()),
                         new LocationData("world", UUID.randomUUID(), "NORMAL", 0, 0, 0,
                                 0f, 0f),
-                        new PersistentDataContainerData(new HashMap<>()));
+                        new PersistentDataContainerData(new HashMap<>()),
+                        minecraftVersion);
             });
         }
     }

bukkit/src/main/java/net/william278/husksync/player/BukkitPlayer.java

@@ -6,6 +6,7 @@ import net.md_5.bungee.api.chat.BaseComponent;
 import net.william278.husksync.BukkitHuskSync;
 import net.william278.husksync.data.*;
 import net.william278.husksync.editor.ItemEditorMenu;
+import net.william278.husksync.util.Version;
 import org.apache.commons.lang.ArrayUtils;
 import org.bukkit.*;
 import org.bukkit.advancement.Advancement;
@@ -434,6 +435,12 @@ public class BukkitPlayer extends OnlineUser {
         }
     }
 
+    @NotNull
+    @Override
+    public Version getMinecraftVersion() {
+        return Version.minecraftVersion(Bukkit.getBukkitVersion());
+    }
+
     @Override
     public boolean hasPermission(@NotNull String node) {
         return player.hasPermission(node);

common/src/main/java/net/william278/husksync/HuskSync.java

@@ -10,6 +10,7 @@ import net.william278.husksync.migrator.Migrator;
 import net.william278.husksync.player.OnlineUser;
 import net.william278.husksync.redis.RedisManager;
 import net.william278.husksync.util.Logger;
+import net.william278.husksync.util.Version;
 import org.jetbrains.annotations.NotNull;
 
 import java.util.List;
@@ -18,32 +19,122 @@ import java.util.Set;
 import java.util.UUID;
 import java.util.concurrent.CompletableFuture;
 
+/**
+ * Abstract implementation of the HuskSync plugin.
+ */
 public interface HuskSync {
 
-    @NotNull Set<OnlineUser> getOnlineUsers();
+    /**
+     * Returns a set of online players.
+     *
+     * @return a set of online players as {@link OnlineUser}
+     */
+    @NotNull
+    Set<OnlineUser> getOnlineUsers();
 
-    @NotNull Optional<OnlineUser> getOnlineUser(@NotNull UUID uuid);
+    /**
+     * Returns an online user by UUID if they exist
+     *
+     * @param uuid the UUID of the user to get
+     * @return an online user as {@link OnlineUser}
+     */
+    @NotNull
+    Optional<OnlineUser> getOnlineUser(@NotNull UUID uuid);
 
-    @NotNull Database getDatabase();
+    /**
+     * Returns the database implementation
+     *
+     * @return the {@link Database} implementation
+     */
+    @NotNull
+    Database getDatabase();
 
-    @NotNull RedisManager getRedisManager();
+    /**
+     * Returns the redis manager implementation
+     *
+     * @return the {@link RedisManager} implementation
+     */
 
-    @NotNull DataAdapter getDataAdapter();
+    @NotNull
+    RedisManager getRedisManager();
 
-    @NotNull DataEditor getDataEditor();
+    /**
+     * Returns the data adapter implementation
+     *
+     * @return the {@link DataAdapter} implementation
+     */
+    @NotNull
+    DataAdapter getDataAdapter();
 
-    @NotNull EventCannon getEventCannon();
+    /**
+     * Returns the data editor implementation
+     *
+     * @return the {@link DataEditor} implementation
+     */
+    @NotNull
+    DataEditor getDataEditor();
 
-    @NotNull List<Migrator> getAvailableMigrators();
+    /**
+     * Returns the event firing cannon
+     *
+     * @return the {@link EventCannon} implementation
+     */
+    @NotNull
+    EventCannon getEventCannon();
 
-    @NotNull Settings getSettings();
+    /**
+     * Returns a list of available data {@link Migrator}s
+     *
+     * @return a list of {@link Migrator}s
+     */
+    @NotNull
+    List<Migrator> getAvailableMigrators();
 
-    @NotNull Locales getLocales();
+    /**
+     * Returns the plugin {@link Settings}
+     *
+     * @return the {@link Settings}
+     */
+    @NotNull
+    Settings getSettings();
 
-    @NotNull Logger getLoggingAdapter();
+    /**
+     * Returns the plugin {@link Locales}
+     *
+     * @return the {@link Locales}
+     */
+    @NotNull
+    Locales getLocales();
 
-    @NotNull String getVersion();
+    /**
+     * Returns the plugin {@link Logger}
+     *
+     * @return the {@link Logger}
+     */
+    @NotNull
+    Logger getLoggingAdapter();
 
+    /**
+     * Returns the plugin version
+     *
+     * @return the plugin {@link Version}
+     */
+    @NotNull
+    Version getPluginVersion();
+
+    /**
+     * Returns the Minecraft version implementation
+     *
+     * @return the Minecraft {@link Version}
+     */
+    @NotNull
+    Version getMinecraftVersion();
+
+    /**
+     * Reloads the {@link Settings} and {@link Locales} from their respective config files
+     *
+     * @return a {@link CompletableFuture} that will be completed when the plugin reload is complete and if it was successful
+     */
     CompletableFuture<Boolean> reload();
 
 }

common/src/main/java/net/william278/husksync/api/BaseHuskSyncAPI.java

@@ -3,7 +3,7 @@ package net.william278.husksync.api;
 import net.william278.husksync.HuskSync;
 import net.william278.husksync.data.DataSaveCause;
 import net.william278.husksync.data.UserData;
-import net.william278.husksync.data.VersionedUserData;
+import net.william278.husksync.data.UserDataSnapshot;
 import net.william278.husksync.player.OnlineUser;
 import net.william278.husksync.player.User;
 import org.jetbrains.annotations.NotNull;
@@ -74,7 +74,7 @@ public abstract class BaseHuskSyncAPI {
             if (user instanceof OnlineUser) {
                 return Optional.of(((OnlineUser) user).getUserData().join());
             } else {
-                return plugin.getDatabase().getCurrentUserData(user).join().map(VersionedUserData::userData);
+                return plugin.getDatabase().getCurrentUserData(user).join().map(UserDataSnapshot::userData);
             }
         });
     }
@@ -108,16 +108,16 @@ public abstract class BaseHuskSyncAPI {
     }
 
     /**
-     * Returns the saved {@link VersionedUserData} records for the given {@link User}
+     * Returns the saved {@link UserDataSnapshot} records for the given {@link User}
      *
-     * @param user the {@link User} to get the {@link VersionedUserData} for
-     * @return future returning a list {@link VersionedUserData} for the given {@link User} if they exist,
+     * @param user the {@link User} to get the {@link UserDataSnapshot} for
+     * @return future returning a list {@link UserDataSnapshot} for the given {@link User} if they exist,
      * otherwise an empty {@link Optional}
      * @apiNote The length of the list of VersionedUserData will correspond to the configured
      * {@code max_user_data_records} config option
      * @since 2.0
      */
-    public final CompletableFuture<List<VersionedUserData>> getSavedUserData(@NotNull User user) {
+    public final CompletableFuture<List<UserDataSnapshot>> getSavedUserData(@NotNull User user) {
         return CompletableFuture.supplyAsync(() -> plugin.getDatabase().getUserData(user).join());
     }
 

common/src/main/java/net/william278/husksync/command/EnderChestCommand.java

@@ -4,7 +4,7 @@ import net.william278.husksync.HuskSync;
 import net.william278.husksync.data.DataSaveCause;
 import net.william278.husksync.data.ItemData;
 import net.william278.husksync.data.UserData;
-import net.william278.husksync.data.VersionedUserData;
+import net.william278.husksync.data.UserDataSnapshot;
 import net.william278.husksync.editor.ItemEditorMenu;
 import net.william278.husksync.player.OnlineUser;
 import net.william278.husksync.player.User;
@@ -55,15 +55,15 @@ public class EnderChestCommand extends CommandBase implements TabCompletable {
                         .ifPresent(player::sendMessage)));
     }
 
-    private void showEnderChestMenu(@NotNull OnlineUser player, @NotNull VersionedUserData versionedUserData,
+    private void showEnderChestMenu(@NotNull OnlineUser player, @NotNull UserDataSnapshot userDataSnapshot,
                                     @NotNull User dataOwner, final boolean allowEdit) {
         CompletableFuture.runAsync(() -> {
-            final UserData data = versionedUserData.userData();
+            final UserData data = userDataSnapshot.userData();
             final ItemEditorMenu menu = ItemEditorMenu.createEnderChestMenu(data.getEnderChestData(),
                     dataOwner, player, plugin.getLocales(), allowEdit);
             plugin.getLocales().getLocale("viewing_ender_chest_of", dataOwner.username,
                             DateFormat.getDateTimeInstance(DateFormat.SHORT, DateFormat.SHORT, Locale.getDefault())
-                                    .format(versionedUserData.versionTimestamp()))
+                                    .format(userDataSnapshot.versionTimestamp()))
                     .ifPresent(player::sendMessage);
             final ItemData enderChestDataOnClose = plugin.getDataEditor().openItemEditorMenu(player, menu).join();
             if (!menu.canEdit) {
@@ -72,7 +72,8 @@ public class EnderChestCommand extends CommandBase implements TabCompletable {
             final UserData updatedUserData = new UserData(data.getStatusData(), data.getInventoryData(),
                     enderChestDataOnClose, data.getPotionEffectsData(), data.getAdvancementData(),
                     data.getStatisticsData(), data.getLocationData(),
-                    data.getPersistentDataContainerData());
+                    data.getPersistentDataContainerData(),
+                    plugin.getMinecraftVersion().getWithoutMeta());
             plugin.getDatabase().setUserData(dataOwner, updatedUserData, DataSaveCause.ENDER_CHEST_COMMAND_EDIT).join();
             plugin.getRedisManager().sendUserDataUpdate(dataOwner, updatedUserData).join();
         });

common/src/main/java/net/william278/husksync/command/HuskSyncCommand.java

@@ -34,7 +34,7 @@ public class HuskSyncCommand extends CommandBase implements TabCompletable, Cons
                     plugin.getLocales().getLocale("error_no_permission").ifPresent(player::sendMessage);
                     return;
                 }
-                final UpdateChecker updateChecker = new UpdateChecker(plugin.getVersion(), plugin.getLoggingAdapter());
+                final UpdateChecker updateChecker = new UpdateChecker(plugin.getPluginVersion(), plugin.getLoggingAdapter());
                 updateChecker.fetchLatestVersion().thenAccept(latestVersion -> {
                     if (updateChecker.isUpdateAvailable(latestVersion)) {
                         player.sendMessage(new MineDown("[HuskSync](#00fb9a bold) [| A new update is available:](#00fb9a) [HuskSync " + updateChecker.fetchLatestVersion() + "](#00fb9a bold)" +
@@ -57,7 +57,7 @@ public class HuskSyncCommand extends CommandBase implements TabCompletable, Cons
             case "migrate" ->
                     plugin.getLocales().getLocale("error_console_command_only").ifPresent(player::sendMessage);
             default -> plugin.getLocales().getLocale("error_invalid_syntax",
-                            "/husksync <update/info/reload>")
+                            "/husksync <update/about/reload>")
                     .ifPresent(player::sendMessage);
         }
     }
@@ -65,14 +65,14 @@ public class HuskSyncCommand extends CommandBase implements TabCompletable, Cons
     @Override
     public void onConsoleExecute(@NotNull String[] args) {
         if (args.length < 1) {
-            plugin.getLoggingAdapter().log(Level.INFO, "Console usage: \"husksync <update/info/reload/migrate>\"");
+            plugin.getLoggingAdapter().log(Level.INFO, "Console usage: \"husksync <update/about/reload/migrate>\"");
             return;
         }
         switch (args[0].toLowerCase()) {
             case "update", "version" ->
-                    new UpdateChecker(plugin.getVersion(), plugin.getLoggingAdapter()).logToConsole();
+                    new UpdateChecker(plugin.getPluginVersion(), plugin.getLoggingAdapter()).logToConsole();
             case "info", "about" -> plugin.getLoggingAdapter().log(Level.INFO, plugin.getLocales().stripMineDown(
-                    Locales.PLUGIN_INFORMATION.replace("%version%", plugin.getVersion())));
+                    Locales.PLUGIN_INFORMATION.replace("%version%", plugin.getPluginVersion().toString())));
             case "reload" -> {
                 plugin.reload();
                 plugin.getLoggingAdapter().log(Level.INFO, "Reloaded config & message files.");
@@ -105,7 +105,7 @@ public class HuskSyncCommand extends CommandBase implements TabCompletable, Cons
                 });
             }
             default -> plugin.getLoggingAdapter().log(Level.INFO,
-                    "Invalid syntax. Console usage: \"husksync <update/info/reload/migrate>\"");
+                    "Invalid syntax. Console usage: \"husksync <update/about/reload/migrate>\"");
         }
     }
 
@@ -129,6 +129,6 @@ public class HuskSyncCommand extends CommandBase implements TabCompletable, Cons
             plugin.getLocales().getLocale("error_no_permission").ifPresent(player::sendMessage);
             return;
         }
-        player.sendMessage(new MineDown(Locales.PLUGIN_INFORMATION.replace("%version%", plugin.getVersion())));
+        player.sendMessage(new MineDown(Locales.PLUGIN_INFORMATION.replace("%version%", plugin.getPluginVersion().toString())));
     }
 }

common/src/main/java/net/william278/husksync/command/InventoryCommand.java

@@ -4,7 +4,7 @@ import net.william278.husksync.HuskSync;
 import net.william278.husksync.data.DataSaveCause;
 import net.william278.husksync.data.ItemData;
 import net.william278.husksync.data.UserData;
-import net.william278.husksync.data.VersionedUserData;
+import net.william278.husksync.data.UserDataSnapshot;
 import net.william278.husksync.editor.ItemEditorMenu;
 import net.william278.husksync.player.OnlineUser;
 import net.william278.husksync.player.User;
@@ -55,15 +55,15 @@ public class InventoryCommand extends CommandBase implements TabCompletable {
                         .ifPresent(player::sendMessage)));
     }
 
-    private void showInventoryMenu(@NotNull OnlineUser player, @NotNull VersionedUserData versionedUserData,
+    private void showInventoryMenu(@NotNull OnlineUser player, @NotNull UserDataSnapshot userDataSnapshot,
                                    @NotNull User dataOwner, boolean allowEdit) {
         CompletableFuture.runAsync(() -> {
-            final UserData data = versionedUserData.userData();
+            final UserData data = userDataSnapshot.userData();
             final ItemEditorMenu menu = ItemEditorMenu.createInventoryMenu(data.getInventoryData(),
                     dataOwner, player, plugin.getLocales(), allowEdit);
             plugin.getLocales().getLocale("viewing_inventory_of", dataOwner.username,
                             DateFormat.getDateTimeInstance(DateFormat.SHORT, DateFormat.SHORT, Locale.getDefault())
-                                    .format(versionedUserData.versionTimestamp()))
+                                    .format(userDataSnapshot.versionTimestamp()))
                     .ifPresent(player::sendMessage);
             final ItemData inventoryDataOnClose = plugin.getDataEditor().openItemEditorMenu(player, menu).join();
             if (!menu.canEdit) {
@@ -72,7 +72,8 @@ public class InventoryCommand extends CommandBase implements TabCompletable {
             final UserData updatedUserData = new UserData(data.getStatusData(), inventoryDataOnClose,
                     data.getEnderChestData(), data.getPotionEffectsData(), data.getAdvancementData(),
                     data.getStatisticsData(), data.getLocationData(),
-                    data.getPersistentDataContainerData());
+                    data.getPersistentDataContainerData(),
+                    plugin.getMinecraftVersion().getWithoutMeta());
             plugin.getDatabase().setUserData(dataOwner, updatedUserData, DataSaveCause.INVENTORY_COMMAND_EDIT).join();
             plugin.getRedisManager().sendUserDataUpdate(dataOwner, updatedUserData).join();
         });

common/src/main/java/net/william278/husksync/command/UserDataCommand.java

@@ -14,7 +14,7 @@ import java.util.stream.Collectors;
 
 public class UserDataCommand extends CommandBase implements TabCompletable {
 
-    private final String[] COMMAND_ARGUMENTS = {"view", "list", "delete", "restore"};
+    private final String[] COMMAND_ARGUMENTS = {"view", "list", "delete", "restore", "pin"};
 
     public UserDataCommand(@NotNull HuskSync implementor) {
         super("userdata", Permission.COMMAND_USER_DATA, implementor, "playerdata");
@@ -24,7 +24,7 @@ public class UserDataCommand extends CommandBase implements TabCompletable {
     public void onExecute(@NotNull OnlineUser player, @NotNull String[] args) {
         if (args.length < 1) {
             plugin.getLocales().getLocale("error_invalid_syntax",
-                            "/userdata <view|list|delete|restore> <username> [version_uuid]")
+                            "/userdata <view/list/delete/restore/pin> <username> [version_uuid]")
                     .ifPresent(player::sendMessage);
             return;
         }
@@ -160,6 +160,47 @@ public class UserDataCommand extends CommandBase implements TabCompletable {
                             .ifPresent(player::sendMessage);
                 }
             }
+            case "pin" -> {
+                if (args.length < 3) {
+                    plugin.getLocales().getLocale("error_invalid_syntax",
+                                    "/userdata pin <username> <version_uuid>")
+                            .ifPresent(player::sendMessage);
+                    return;
+                }
+                final String username = args[1];
+                try {
+                    final UUID versionUuid = UUID.fromString(args[2]);
+                    CompletableFuture.runAsync(() -> plugin.getDatabase().getUserByName(username.toLowerCase()).thenAccept(
+                            optionalUser -> optionalUser.ifPresentOrElse(
+                                    user -> plugin.getDatabase().getUserData(user, versionUuid).thenAccept(
+                                            optionalUserData -> optionalUserData.ifPresentOrElse(userData -> {
+                                                if (userData.pinned()) {
+                                                    plugin.getDatabase().unpinUserData(user, versionUuid).join();
+                                                    plugin.getLocales().getLocale("data_unpinned",
+                                                                    versionUuid.toString().split("-")[0],
+                                                                    versionUuid.toString(),
+                                                                    user.username,
+                                                                    user.uuid.toString())
+                                                            .ifPresent(player::sendMessage);
+                                                } else {
+                                                    plugin.getDatabase().pinUserData(user, versionUuid).join();
+                                                    plugin.getLocales().getLocale("data_pinned",
+                                                                    versionUuid.toString().split("-")[0],
+                                                                    versionUuid.toString(),
+                                                                    user.username,
+                                                                    user.uuid.toString())
+                                                            .ifPresent(player::sendMessage);
+                                                }
+                                            }, () -> plugin.getLocales().getLocale("error_invalid_version_uuid")
+                                                    .ifPresent(player::sendMessage))),
+                                    () -> plugin.getLocales().getLocale("error_invalid_player")
+                                            .ifPresent(player::sendMessage))));
+                } catch (IllegalArgumentException e) {
+                    plugin.getLocales().getLocale("error_invalid_syntax",
+                                    "/userdata pin <username> <version_uuid>")
+                            .ifPresent(player::sendMessage);
+                }
+            }
         }
     }
 

common/src/main/java/net/william278/husksync/config/Settings.java

@@ -119,7 +119,7 @@ public class Settings {
         CHECK_FOR_UPDATES("check_for_updates", OptionType.BOOLEAN, true),
 
         CLUSTER_ID("cluster_id", OptionType.STRING, ""),
-        DEBUG_LOGGING("debug_logging", OptionType.BOOLEAN, true),
+        DEBUG_LOGGING("debug_logging", OptionType.BOOLEAN, false),
 
         DATABASE_HOST("database.credentials.host", OptionType.STRING, "localhost"),
         DATABASE_PORT("database.credentials.port", OptionType.INTEGER, 3306),

common/src/main/java/net/william278/husksync/data/UserData.java

@@ -65,6 +65,12 @@ public class UserData {
     @SerializedName("persistent_data_container")
     protected PersistentDataContainerData persistentDataContainerData;
 
+    /**
+     * Stores the version of Minecraft this data was generated in
+     */
+    @SerializedName("minecraft_version")
+    protected String minecraftVersion;
+
     /**
      * Stores the version of the data format being used
      */
@@ -74,7 +80,8 @@ public class UserData {
     public UserData(@NotNull StatusData statusData, @NotNull ItemData inventoryData,
                     @NotNull ItemData enderChestData, @NotNull PotionEffectData potionEffectData,
                     @NotNull List<AdvancementData> advancementData, @NotNull StatisticsData statisticData,
-                    @NotNull LocationData locationData, @NotNull PersistentDataContainerData persistentDataContainerData) {
+                    @NotNull LocationData locationData, @NotNull PersistentDataContainerData persistentDataContainerData,
+                    @NotNull String minecraftVersion) {
         this.statusData = statusData;
         this.inventoryData = inventoryData;
         this.enderChestData = enderChestData;
@@ -83,6 +90,7 @@ public class UserData {
         this.statisticData = statisticData;
         this.locationData = locationData;
         this.persistentDataContainerData = persistentDataContainerData;
+        this.minecraftVersion = minecraftVersion;
         this.formatVersion = CURRENT_FORMAT_VERSION;
     }
 
@@ -123,4 +131,9 @@ public class UserData {
         return persistentDataContainerData;
     }
 
+    @NotNull
+    public String getMinecraftVersion() {
+        return minecraftVersion;
+    }
+
 }

common/src/main/java/net/william278/husksync/data/UserDataSnapshot.java

@@ -13,21 +13,23 @@ import java.util.UUID;
  * @param userData         The {@link UserData} that has been versioned
  * @param cause            The {@link DataSaveCause} that caused this data to be saved
  */
-public record VersionedUserData(@NotNull UUID versionUUID, @NotNull Date versionTimestamp,
-                                @NotNull DataSaveCause cause, @NotNull UserData userData) implements Comparable<VersionedUserData> {
+public record UserDataSnapshot(@NotNull UUID versionUUID, @NotNull Date versionTimestamp,
+                               @NotNull DataSaveCause cause, boolean pinned,
+                               @NotNull UserData userData) implements Comparable<UserDataSnapshot> {
 
     /**
-     * Version {@link UserData} into a {@link VersionedUserData}, assigning it a random {@link UUID} and the current timestamp {@link Date}
+     * Version {@link UserData} into a {@link UserDataSnapshot}, assigning it a random {@link UUID} and the current timestamp {@link Date}
      * </p>
      * Note that this method will set {@code cause} to {@link DataSaveCause#API}
      *
      * @param userData The {@link UserData} to version
-     * @return A new {@link VersionedUserData}
+     * @return A new {@link UserDataSnapshot}
      * @implNote This isn't used to version data that is going to be set to a database to prevent UUID collisions.<p>
      * Database implementations should instead use their own UUID generation functions.
      */
-    public static VersionedUserData version(@NotNull UserData userData) {
-        return new VersionedUserData(UUID.randomUUID(), new Date(), DataSaveCause.API, userData);
+    public static UserDataSnapshot create(@NotNull UserData userData) {
+        return new UserDataSnapshot(UUID.randomUUID(), new Date(),
+                DataSaveCause.API, false, userData);
     }
 
     /**
@@ -37,7 +39,7 @@ public record VersionedUserData(@NotNull UUID versionUUID, @NotNull Date version
      * @return the comparison result; the more recent UserData is greater than the less recent UserData
      */
     @Override
-    public int compareTo(@NotNull VersionedUserData other) {
+    public int compareTo(@NotNull UserDataSnapshot other) {
         return Long.compare(this.versionTimestamp.getTime(), other.versionTimestamp.getTime());
     }
 

common/src/main/java/net/william278/husksync/database/Database.java

@@ -3,7 +3,7 @@ package net.william278.husksync.database;
 import net.william278.husksync.data.DataAdapter;
 import net.william278.husksync.data.DataSaveCause;
 import net.william278.husksync.data.UserData;
-import net.william278.husksync.data.VersionedUserData;
+import net.william278.husksync.data.UserDataSnapshot;
 import net.william278.husksync.event.EventCannon;
 import net.william278.husksync.migrator.Migrator;
 import net.william278.husksync.player.User;
@@ -157,40 +157,41 @@ public abstract class Database {
      * Get the current uniquely versioned user data for a given user, if it exists.
      *
      * @param user the user to get data for
-     * @return an optional containing the {@link VersionedUserData}, if it exists, or an empty optional if it does not
+     * @return an optional containing the {@link UserDataSnapshot}, if it exists, or an empty optional if it does not
      */
-    public abstract CompletableFuture<Optional<VersionedUserData>> getCurrentUserData(@NotNull User user);
+    public abstract CompletableFuture<Optional<UserDataSnapshot>> getCurrentUserData(@NotNull User user);
 
     /**
-     * Get all {@link VersionedUserData} entries for a user from the database.
+     * Get all {@link UserDataSnapshot} entries for a user from the database.
      *
      * @param user The user to get data for
-     * @return A future returning a list of a user's {@link VersionedUserData} entries
+     * @return A future returning a list of a user's {@link UserDataSnapshot} entries
      */
-    public abstract CompletableFuture<List<VersionedUserData>> getUserData(@NotNull User user);
+    public abstract CompletableFuture<List<UserDataSnapshot>> getUserData(@NotNull User user);
 
     /**
-     * Gets a specific {@link VersionedUserData} entry for a user from the database, by its UUID.
+     * Gets a specific {@link UserDataSnapshot} entry for a user from the database, by its UUID.
      *
      * @param user        The user to get data for
-     * @param versionUuid The UUID of the {@link VersionedUserData} entry to get
-     * @return A future returning an optional containing the {@link VersionedUserData}, if it exists, or an empty optional if it does not
+     * @param versionUuid The UUID of the {@link UserDataSnapshot} entry to get
+     * @return A future returning an optional containing the {@link UserDataSnapshot}, if it exists, or an empty optional if it does not
      */
-    public abstract CompletableFuture<Optional<VersionedUserData>> getUserData(@NotNull User user, @NotNull UUID versionUuid);
+    public abstract CompletableFuture<Optional<UserDataSnapshot>> getUserData(@NotNull User user, @NotNull UUID versionUuid);
 
     /**
-     * <b>(Internal)</b> Prune user data for a given user to the maximum value as configured
+     * <b>(Internal)</b> Prune user data for a given user to the maximum value as configured.
      *
      * @param user The user to prune data for
      * @return A future returning void when complete
+     * @implNote Data snapshots marked as {@code pinned} are exempt from rotation
      */
-    protected abstract CompletableFuture<Void> pruneUserData(@NotNull User user);
+    protected abstract CompletableFuture<Void> rotateUserData(@NotNull User user);
 
     /**
-     * Deletes a specific {@link VersionedUserData} entry for a user from the database, by its UUID.
+     * Deletes a specific {@link UserDataSnapshot} entry for a user from the database, by its UUID.
      *
      * @param user        The user to get data for
-     * @param versionUuid The UUID of the {@link VersionedUserData} entry to delete
+     * @param versionUuid The UUID of the {@link UserDataSnapshot} entry to delete
      * @return A future returning void when complete
      */
     public abstract CompletableFuture<Boolean> deleteUserData(@NotNull User user, @NotNull UUID versionUuid);
@@ -202,10 +203,30 @@ public abstract class Database {
      * @param user     The user to add data for
      * @param userData The {@link UserData} to set. The implementation should version it with a random UUID and the current timestamp during insertion.
      * @return A future returning void when complete
-     * @see VersionedUserData#version(UserData)
+     * @see UserDataSnapshot#create(UserData)
      */
     public abstract CompletableFuture<Void> setUserData(@NotNull User user, @NotNull UserData userData, @NotNull DataSaveCause dataSaveCause);
 
+    /**
+     * Pin a saved {@link UserDataSnapshot} by given version UUID, setting it's {@code pinned} state to {@code true}.
+     *
+     * @param user        The user to pin the data for
+     * @param versionUuid The UUID of the user's {@link UserDataSnapshot} entry to pin
+     * @return A future returning a boolean; {@code true} if the operation completed successfully, {@code false} if it failed
+     * @see UserDataSnapshot#pinned()
+     */
+    public abstract CompletableFuture<Void> pinUserData(@NotNull User user, @NotNull UUID versionUuid);
+
+    /**
+     * Unpin a saved {@link UserDataSnapshot} by given version UUID, setting it's {@code pinned} state to {@code false}.
+     *
+     * @param user        The user to unpin the data for
+     * @param versionUuid The UUID of the user's {@link UserDataSnapshot} entry to unpin
+     * @return A future returning a boolean; {@code true} if the operation completed successfully, {@code false} if it failed
+     * @see UserDataSnapshot#pinned()
+     */
+    public abstract CompletableFuture<Void> unpinUserData(@NotNull User user, @NotNull UUID versionUuid);
+
     /**
      * Wipes <b>all</b> {@link UserData} entries from the database.
      * <b>This should never be used</b>, except when preparing tables for migration.

common/src/main/java/net/william278/husksync/database/MySqlDatabase.java

@@ -13,8 +13,8 @@ import org.jetbrains.annotations.NotNull;
 import java.io.ByteArrayInputStream;
 import java.io.IOException;
 import java.sql.*;
-import java.util.*;
 import java.util.Date;
+import java.util.*;
 import java.util.concurrent.CompletableFuture;
 import java.util.logging.Level;
 
@@ -206,11 +206,11 @@ public class MySqlDatabase extends Database {
     }
 
     @Override
-    public CompletableFuture<Optional<VersionedUserData>> getCurrentUserData(@NotNull User user) {
+    public CompletableFuture<Optional<UserDataSnapshot>> getCurrentUserData(@NotNull User user) {
         return CompletableFuture.supplyAsync(() -> {
             try (Connection connection = getConnection()) {
                 try (PreparedStatement statement = connection.prepareStatement(formatStatementTables("""
-                        SELECT `version_uuid`, `timestamp`, `save_cause`, `data`
+                        SELECT `version_uuid`, `timestamp`, `save_cause`, `pinned`, `data`
                         FROM `%user_data_table%`
                         WHERE `player_uuid`=?
                         ORDER BY `timestamp` DESC
@@ -221,10 +221,11 @@ public class MySqlDatabase extends Database {
                         final Blob blob = resultSet.getBlob("data");
                         final byte[] dataByteArray = blob.getBytes(1, (int) blob.length());
                         blob.free();
-                        return Optional.of(new VersionedUserData(
+                        return Optional.of(new UserDataSnapshot(
                                 UUID.fromString(resultSet.getString("version_uuid")),
                                 Date.from(resultSet.getTimestamp("timestamp").toInstant()),
                                 DataSaveCause.getCauseByName(resultSet.getString("save_cause")),
+                                resultSet.getBoolean("pinned"),
                                 getDataAdapter().fromBytes(dataByteArray)));
                     }
                 }
@@ -236,12 +237,12 @@ public class MySqlDatabase extends Database {
     }
 
     @Override
-    public CompletableFuture<List<VersionedUserData>> getUserData(@NotNull User user) {
+    public CompletableFuture<List<UserDataSnapshot>> getUserData(@NotNull User user) {
         return CompletableFuture.supplyAsync(() -> {
-            final List<VersionedUserData> retrievedData = new ArrayList<>();
+            final List<UserDataSnapshot> retrievedData = new ArrayList<>();
             try (Connection connection = getConnection()) {
                 try (PreparedStatement statement = connection.prepareStatement(formatStatementTables("""
-                        SELECT `version_uuid`, `timestamp`, `save_cause`, `data`
+                        SELECT `version_uuid`, `timestamp`, `save_cause`, `pinned`, `data`
                         FROM `%user_data_table%`
                         WHERE `player_uuid`=?
                         ORDER BY `timestamp` DESC;"""))) {
@@ -251,10 +252,11 @@ public class MySqlDatabase extends Database {
                         final Blob blob = resultSet.getBlob("data");
                         final byte[] dataByteArray = blob.getBytes(1, (int) blob.length());
                         blob.free();
-                        final VersionedUserData data = new VersionedUserData(
+                        final UserDataSnapshot data = new UserDataSnapshot(
                                 UUID.fromString(resultSet.getString("version_uuid")),
                                 Date.from(resultSet.getTimestamp("timestamp").toInstant()),
                                 DataSaveCause.getCauseByName(resultSet.getString("save_cause")),
+                                resultSet.getBoolean("pinned"),
                                 getDataAdapter().fromBytes(dataByteArray));
                         retrievedData.add(data);
                     }
@@ -268,11 +270,11 @@ public class MySqlDatabase extends Database {
     }
 
     @Override
-    public CompletableFuture<Optional<VersionedUserData>> getUserData(@NotNull User user, @NotNull UUID versionUuid) {
+    public CompletableFuture<Optional<UserDataSnapshot>> getUserData(@NotNull User user, @NotNull UUID versionUuid) {
         return CompletableFuture.supplyAsync(() -> {
             try (Connection connection = getConnection()) {
                 try (PreparedStatement statement = connection.prepareStatement(formatStatementTables("""
-                        SELECT `version_uuid`, `timestamp`, `save_cause`, `data`
+                        SELECT `version_uuid`, `timestamp`, `save_cause`, `pinned`, `data`
                         FROM `%user_data_table%`
                         WHERE `player_uuid`=? AND `version_uuid`=?
                         ORDER BY `timestamp` DESC
@@ -284,10 +286,11 @@ public class MySqlDatabase extends Database {
                         final Blob blob = resultSet.getBlob("data");
                         final byte[] dataByteArray = blob.getBytes(1, (int) blob.length());
                         blob.free();
-                        return Optional.of(new VersionedUserData(
+                        return Optional.of(new UserDataSnapshot(
                                 UUID.fromString(resultSet.getString("version_uuid")),
                                 Date.from(resultSet.getTimestamp("timestamp").toInstant()),
                                 DataSaveCause.getCauseByName(resultSet.getString("save_cause")),
+                                resultSet.getBoolean("pinned"),
                                 getDataAdapter().fromBytes(dataByteArray)));
                     }
                 }
@@ -299,16 +302,19 @@ public class MySqlDatabase extends Database {
     }
 
     @Override
-    protected CompletableFuture<Void> pruneUserData(@NotNull User user) {
-        return CompletableFuture.runAsync(() -> getUserData(user).thenAccept(data -> {
-            if (data.size() > maxUserDataRecords) {
+    protected CompletableFuture<Void> rotateUserData(@NotNull User user) {
+        return CompletableFuture.runAsync(() -> {
+            final List<UserDataSnapshot> unpinnedUserData = getUserData(user).join().stream()
+                    .filter(dataSnapshot -> !dataSnapshot.pinned()).toList();
+            if (unpinnedUserData.size() > maxUserDataRecords) {
                 try (Connection connection = getConnection()) {
                     try (PreparedStatement statement = connection.prepareStatement(formatStatementTables("""
                             DELETE FROM `%user_data_table%`
                             WHERE `player_uuid`=?
+                            AND `pinned` IS FALSE
                             ORDER BY `timestamp` ASC
                             LIMIT %entry_count%;""".replace("%entry_count%",
-                            Integer.toString(data.size() - maxUserDataRecords))))) {
+                            Integer.toString(unpinnedUserData.size() - maxUserDataRecords))))) {
                         statement.setString(1, user.uuid.toString());
                         statement.executeUpdate();
                     }
@@ -316,7 +322,7 @@ public class MySqlDatabase extends Database {
                     getLogger().log(Level.SEVERE, "Failed to prune user data from the database", e);
                 }
             }
-        }));
+        });
     }
 
     @Override
@@ -361,7 +367,45 @@ public class MySqlDatabase extends Database {
                     getLogger().log(Level.SEVERE, "Failed to set user data in the database", e);
                 }
             }
-        }).thenRun(() -> pruneUserData(user).join());
+        }).thenRun(() -> rotateUserData(user).join());
+    }
+
+    @Override
+    public CompletableFuture<Void> pinUserData(@NotNull User user, @NotNull UUID versionUuid) {
+        return CompletableFuture.runAsync(() -> {
+            try (Connection connection = getConnection()) {
+                try (PreparedStatement statement = connection.prepareStatement(formatStatementTables("""
+                        UPDATE `%user_data_table%`
+                        SET `pinned`=TRUE
+                        WHERE `player_uuid`=? AND `version_uuid`=?
+                        LIMIT 1;"""))) {
+                    statement.setString(1, user.uuid.toString());
+                    statement.setString(2, versionUuid.toString());
+                    statement.executeUpdate();
+                }
+            } catch (SQLException e) {
+                getLogger().log(Level.SEVERE, "Failed to pin user data in the database", e);
+            }
+        });
+    }
+
+    @Override
+    public CompletableFuture<Void> unpinUserData(@NotNull User user, @NotNull UUID versionUuid) {
+        return CompletableFuture.runAsync(() -> {
+            try (Connection connection = getConnection()) {
+                try (PreparedStatement statement = connection.prepareStatement(formatStatementTables("""
+                        UPDATE `%user_data_table%`
+                        SET `pinned`=FALSE
+                        WHERE `player_uuid`=? AND `version_uuid`=?
+                        LIMIT 1;"""))) {
+                    statement.setString(1, user.uuid.toString());
+                    statement.setString(2, versionUuid.toString());
+                    statement.executeUpdate();
+                }
+            } catch (SQLException e) {
+                getLogger().log(Level.SEVERE, "Failed to unpin user data in the database", e);
+            }
+        });
     }
 
     @Override

common/src/main/java/net/william278/husksync/editor/DataEditor.java

@@ -4,7 +4,7 @@ import net.william278.husksync.command.Permission;
 import net.william278.husksync.config.Locales;
 import net.william278.husksync.data.AdvancementData;
 import net.william278.husksync.data.ItemData;
-import net.william278.husksync.data.VersionedUserData;
+import net.william278.husksync.data.UserDataSnapshot;
 import net.william278.husksync.player.OnlineUser;
 import net.william278.husksync.player.User;
 import org.jetbrains.annotations.NotNull;
@@ -13,7 +13,6 @@ import java.text.DateFormat;
 import java.text.SimpleDateFormat;
 import java.util.*;
 import java.util.concurrent.CompletableFuture;
-import java.util.stream.Collectors;
 
 /**
  * Provides methods for displaying and editing user data
@@ -74,13 +73,13 @@ public class DataEditor {
     }
 
     /**
-     * Display a chat menu detailing information about {@link VersionedUserData}
+     * Display a chat menu detailing information about {@link UserDataSnapshot}
      *
      * @param user      The online user to display the message to
-     * @param userData  The {@link VersionedUserData} to display information about
-     * @param dataOwner The {@link User} who owns the {@link VersionedUserData}
+     * @param userData  The {@link UserDataSnapshot} to display information about
+     * @param dataOwner The {@link User} who owns the {@link UserDataSnapshot}
      */
-    public void displayDataOverview(@NotNull OnlineUser user, @NotNull VersionedUserData userData,
+    public void displayDataOverview(@NotNull OnlineUser user, @NotNull UserDataSnapshot userData,
                                     @NotNull User dataOwner) {
         locales.getLocale("data_manager_title",
                         userData.versionUUID().toString().split("-")[0],
@@ -91,6 +90,9 @@ public class DataEditor {
         locales.getLocale("data_manager_timestamp",
                         new SimpleDateFormat("MMM dd yyyy, HH:mm:ss.sss").format(userData.versionTimestamp()))
                 .ifPresent(user::sendMessage);
+        if (userData.pinned()) {
+            locales.getLocale("data_manager_pinned").ifPresent(user::sendMessage);
+        }
         locales.getLocale("data_manager_cause",
                         userData.cause().name().toLowerCase().replaceAll("_", " "))
                 .ifPresent(user::sendMessage);
@@ -120,7 +122,8 @@ public class DataEditor {
         }
     }
 
-    private @NotNull String generateAdvancementPreview(@NotNull List<AdvancementData> advancementData) {
+    @NotNull
+    private String generateAdvancementPreview(@NotNull List<AdvancementData> advancementData) {
         final StringJoiner joiner = new StringJoiner("\n");
         final List<AdvancementData> advancementsToPreview = advancementData.stream().filter(dataItem ->
                 !dataItem.key.startsWith("minecraft:recipes/")).toList();
@@ -140,13 +143,13 @@ public class DataEditor {
     }
 
     /**
-     * Display a chat list detailing a player's saved list of {@link VersionedUserData}
+     * Display a chat list detailing a player's saved list of {@link UserDataSnapshot}
      *
      * @param user         The online user to display the message to
-     * @param userDataList The list of {@link VersionedUserData} to display
-     * @param dataOwner    The {@link User} who owns the {@link VersionedUserData}
+     * @param userDataList The list of {@link UserDataSnapshot} to display
+     * @param dataOwner    The {@link User} who owns the {@link UserDataSnapshot}
      */
-    public void displayDataList(@NotNull OnlineUser user, @NotNull List<VersionedUserData> userDataList,
+    public void displayDataList(@NotNull OnlineUser user, @NotNull List<UserDataSnapshot> userDataList,
                                 @NotNull User dataOwner) {
         locales.getLocale("data_list_title",
                         dataOwner.username, dataOwner.uuid.toString())
@@ -154,7 +157,7 @@ public class DataEditor {
 
         final String[] numberedIcons = "①②③④⑤⑥⑦⑧⑨⑩⑪⑫⑬⑭⑮⑯⑰⑱⑲⑳".split("");
         for (int i = 0; i < Math.min(20, userDataList.size()); i++) {
-            final VersionedUserData userData = userDataList.get(i);
+            final UserDataSnapshot userData = userDataList.get(i);
             locales.getLocale("data_list_item",
                             numberedIcons[i],
                             DateFormat.getDateTimeInstance(DateFormat.SHORT, DateFormat.SHORT, Locale.getDefault())
@@ -162,7 +165,8 @@ public class DataEditor {
                             userData.versionUUID().toString().split("-")[0],
                             userData.versionUUID().toString(),
                             userData.cause().name().toLowerCase().replaceAll("_", " "),
-                            dataOwner.username)
+                            dataOwner.username,
+                            userData.pinned() ? "※" : "  ")
                     .ifPresent(user::sendMessage);
         }
     }

common/src/main/java/net/william278/husksync/hook/PlanDataExtension.java

@@ -8,7 +8,7 @@ import com.djrapitops.plan.extension.annotation.PluginInfo;
 import com.djrapitops.plan.extension.annotation.StringProvider;
 import com.djrapitops.plan.extension.icon.Color;
 import com.djrapitops.plan.extension.icon.Family;
-import net.william278.husksync.data.VersionedUserData;
+import net.william278.husksync.data.UserDataSnapshot;
 import net.william278.husksync.database.Database;
 import net.william278.husksync.player.User;
 import org.jetbrains.annotations.NotNull;
@@ -21,14 +21,16 @@ import java.util.regex.Pattern;
 
 @PluginInfo(
         name = "HuskSync",
-        iconName = "arrow-right-arrow-left",
+        iconName = "cube",
         iconFamily = Family.SOLID,
-        color = Color.LIGHT_BLUE
+        color = Color.NONE
 )
 public class PlanDataExtension implements DataExtension {
 
     private Database database;
 
+    private static final String UNKNOWN_STRING = "N/A";
+
     //todo add more providers
     protected PlanDataExtension(@NotNull Database database) {
         this.database = database;
@@ -45,7 +47,7 @@ public class PlanDataExtension implements DataExtension {
         };
     }
 
-    private CompletableFuture<Optional<VersionedUserData>> getCurrentUserData(@NotNull UUID uuid) {
+    private CompletableFuture<Optional<UserDataSnapshot>> getCurrentUserData(@NotNull UUID uuid) {
         return CompletableFuture.supplyAsync(() -> {
             final Optional<User> optionalUser = database.getUser(uuid).join();
             if (optionalUser.isPresent()) {
@@ -56,11 +58,11 @@ public class PlanDataExtension implements DataExtension {
     }
 
     @NumberProvider(
-            text = "Data Sync Time",
+            text = "Sync Time",
             description = "The last time the user had their data synced with the server.",
             iconName = "clock",
             iconFamily = Family.SOLID,
-            format = FormatType.TIME_MILLISECONDS,
+            format = FormatType.DATE_SECOND,
             priority = 1
     )
     public long getCurrentDataTimestamp(@NotNull UUID uuid) {
@@ -70,7 +72,7 @@ public class PlanDataExtension implements DataExtension {
     }
 
     @StringProvider(
-            text = "Data Version ID",
+            text = "Version ID",
             description = "ID of the data version that the user is currently using.",
             iconName = "bolt",
             iconFamily = Family.SOLID,
@@ -80,7 +82,7 @@ public class PlanDataExtension implements DataExtension {
         return getCurrentUserData(uuid).join().map(
                         versionedUserData -> versionedUserData.versionUUID().toString()
                                 .split(Pattern.quote("-"))[0])
-                .orElse("unknown");
+                .orElse(UNKNOWN_STRING);
     }
 
     @NumberProvider(

common/src/main/java/net/william278/husksync/listener/EventListener.java

@@ -4,7 +4,6 @@ import net.william278.husksync.HuskSync;
 import net.william278.husksync.config.Settings;
 import net.william278.husksync.data.ItemData;
 import net.william278.husksync.data.DataSaveCause;
-import net.william278.husksync.data.UserData;
 import net.william278.husksync.player.OnlineUser;
 import org.jetbrains.annotations.NotNull;
 
@@ -23,7 +22,7 @@ public abstract class EventListener {
     /**
      * The plugin instance
      */
-    protected final HuskSync huskSync;
+    protected final HuskSync plugin;
 
     /**
      * Set of UUIDs current awaiting item synchronization. Events will be cancelled for these users
@@ -35,8 +34,8 @@ public abstract class EventListener {
      */
     private boolean disabling;
 
-    protected EventListener(@NotNull HuskSync huskSync) {
-        this.huskSync = huskSync;
+    protected EventListener(@NotNull HuskSync plugin) {
+        this.plugin = plugin;
         this.usersAwaitingSync = new HashSet<>();
         this.disabling = false;
     }
@@ -49,18 +48,15 @@ public abstract class EventListener {
         CompletableFuture.runAsync(() -> {
             try {
                 // Hold reading data for the network latency threshold, to ensure the source server has set the redis key
-                Thread.sleep(Math.min(0, huskSync.getSettings().getIntegerValue(Settings.ConfigOption.SYNCHRONIZATION_NETWORK_LATENCY_MILLISECONDS)));
+                Thread.sleep(Math.max(0, plugin.getSettings().getIntegerValue(Settings.ConfigOption.SYNCHRONIZATION_NETWORK_LATENCY_MILLISECONDS)));
             } catch (InterruptedException e) {
-                huskSync.getLoggingAdapter().log(Level.SEVERE, "An exception occurred handling a player join", e);
+                plugin.getLoggingAdapter().log(Level.SEVERE, "An exception occurred handling a player join", e);
             } finally {
-                huskSync.getRedisManager().getUserServerSwitch(user).thenAccept(changingServers -> {
-                    huskSync.getLoggingAdapter().info("Handling server change check " + ((changingServers) ? "true" : "false"));
+                plugin.getRedisManager().getUserServerSwitch(user).thenAccept(changingServers -> {
                     if (!changingServers) {
-                        huskSync.getLoggingAdapter().info("User is not changing servers");
                         // Fetch from the database if the user isn't changing servers
-                        setUserFromDatabase(user).thenRun(() -> handleSynchronisationCompletion(user));
+                        setUserFromDatabase(user).thenAccept(succeeded -> handleSynchronisationCompletion(user, succeeded));
                     } else {
-                        huskSync.getLoggingAdapter().info("User is changing servers, setting from db");
                         final int TIME_OUT_MILLISECONDS = 3200;
                         CompletableFuture.runAsync(() -> {
                             final AtomicInteger currentMilliseconds = new AtomicInteger(0);
@@ -70,20 +66,19 @@ public abstract class EventListener {
                             executor.scheduleAtFixedRate(() -> {
                                 if (user.isOffline()) {
                                     executor.shutdown();
-                                    huskSync.getLoggingAdapter().info("Cancelled sync, user gone offline!");
                                     return;
                                 }
                                 if (disabling || currentMilliseconds.get() > TIME_OUT_MILLISECONDS) {
                                     executor.shutdown();
-                                    setUserFromDatabase(user).thenRun(() -> handleSynchronisationCompletion(user));
-                                    huskSync.getLoggingAdapter().info("Setting user from db as fallback");
+                                    setUserFromDatabase(user)
+                                            .thenAccept(succeeded -> handleSynchronisationCompletion(user, succeeded));
                                     return;
                                 }
-                                huskSync.getRedisManager().getUserData(user).thenAccept(redisUserData ->
+                                plugin.getRedisManager().getUserData(user).thenAccept(redisUserData ->
                                         redisUserData.ifPresent(redisData -> {
-                                            huskSync.getLoggingAdapter().info("Setting user from redis!");
-                                            user.setData(redisData, huskSync.getSettings(), huskSync.getEventCannon())
-                                                    .thenRun(() -> handleSynchronisationCompletion(user)).join();
+                                            user.setData(redisData, plugin.getSettings(), plugin.getEventCannon(),
+                                                            plugin.getLoggingAdapter(), plugin.getMinecraftVersion())
+                                                    .thenAccept(succeeded -> handleSynchronisationCompletion(user, succeeded)).join();
                                             executor.shutdown();
                                         })).join();
                                 currentMilliseconds.addAndGet(200);
@@ -95,18 +90,39 @@ public abstract class EventListener {
         });
     }
 
-    private CompletableFuture<Void> setUserFromDatabase(@NotNull OnlineUser user) {
-        return huskSync.getDatabase().getCurrentUserData(user)
-                .thenAccept(databaseUserData -> databaseUserData.ifPresent(databaseData ->
-                        user.setData(databaseData.userData(), huskSync.getSettings(),
-                                huskSync.getEventCannon()).join()));
+    /**
+     * Set a user's data from the database
+     *
+     * @param user The user to set the data for
+     * @return Whether the data was successfully set
+     */
+    private CompletableFuture<Boolean> setUserFromDatabase(@NotNull OnlineUser user) {
+        return plugin.getDatabase().getCurrentUserData(user).thenApply(databaseUserData -> {
+            if (databaseUserData.isPresent()) {
+                return user.setData(databaseUserData.get().userData(), plugin.getSettings(), plugin.getEventCannon(),
+                        plugin.getLoggingAdapter(), plugin.getMinecraftVersion()).join();
+            }
+            return true;
+        });
     }
 
-    private void handleSynchronisationCompletion(@NotNull OnlineUser user) {
-        huskSync.getLocales().getLocale("synchronisation_complete").ifPresent(user::sendActionBar);
-        usersAwaitingSync.remove(user.uuid);
-        huskSync.getDatabase().ensureUser(user).join();
-        huskSync.getEventCannon().fireSyncCompleteEvent(user);
+    /**
+     * Handle a player's synchronization completion
+     *
+     * @param user      The {@link OnlineUser} to handle
+     * @param succeeded Whether the synchronization succeeded
+     */
+    private void handleSynchronisationCompletion(@NotNull OnlineUser user, boolean succeeded) {
+        if (succeeded) {
+            plugin.getLocales().getLocale("synchronisation_complete").ifPresent(user::sendActionBar);
+            usersAwaitingSync.remove(user.uuid);
+            plugin.getDatabase().ensureUser(user).join();
+            plugin.getEventCannon().fireSyncCompleteEvent(user);
+        } else {
+            plugin.getLocales().getLocale("synchronisation_failed")
+                    .ifPresent(user::sendMessage);
+            plugin.getDatabase().ensureUser(user).join();
+        }
     }
 
     public final void handlePlayerQuit(@NotNull OnlineUser user) {
@@ -118,42 +134,42 @@ public abstract class EventListener {
         if (usersAwaitingSync.contains(user.uuid)) {
             return;
         }
-        huskSync.getRedisManager().setUserServerSwitch(user).thenRun(() -> user.getUserData().thenAccept(
-                userData -> huskSync.getRedisManager().setUserData(user, userData).thenRun(
-                        () -> huskSync.getDatabase().setUserData(user, userData, DataSaveCause.DISCONNECT).join())));
+        plugin.getRedisManager().setUserServerSwitch(user).thenRun(() -> user.getUserData().thenAccept(
+                userData -> plugin.getRedisManager().setUserData(user, userData).thenRun(
+                        () -> plugin.getDatabase().setUserData(user, userData, DataSaveCause.DISCONNECT).join())));
         usersAwaitingSync.remove(user.uuid);
     }
 
     public final void handleWorldSave(@NotNull List<OnlineUser> usersInWorld) {
-        if (disabling || !huskSync.getSettings().getBooleanValue(Settings.ConfigOption.SYNCHRONIZATION_SAVE_ON_WORLD_SAVE)) {
+        if (disabling || !plugin.getSettings().getBooleanValue(Settings.ConfigOption.SYNCHRONIZATION_SAVE_ON_WORLD_SAVE)) {
             return;
         }
         CompletableFuture.runAsync(() -> usersInWorld.forEach(user ->
-                huskSync.getDatabase().setUserData(user, user.getUserData().join(), DataSaveCause.WORLD_SAVE).join()));
+                plugin.getDatabase().setUserData(user, user.getUserData().join(), DataSaveCause.WORLD_SAVE).join()));
     }
 
     public final void handlePluginDisable() {
         disabling = true;
 
-        huskSync.getOnlineUsers().stream().filter(user -> !usersAwaitingSync.contains(user.uuid)).forEach(user ->
-                huskSync.getDatabase().setUserData(user, user.getUserData().join(), DataSaveCause.SERVER_SHUTDOWN).join());
+        plugin.getOnlineUsers().stream().filter(user -> !usersAwaitingSync.contains(user.uuid)).forEach(user ->
+                plugin.getDatabase().setUserData(user, user.getUserData().join(), DataSaveCause.SERVER_SHUTDOWN).join());
 
-        huskSync.getDatabase().close();
-        huskSync.getRedisManager().close();
+        plugin.getDatabase().close();
+        plugin.getRedisManager().close();
     }
 
     public final void handleMenuClose(@NotNull OnlineUser user, @NotNull ItemData menuInventory) {
         if (disabling) {
             return;
         }
-        huskSync.getDataEditor().closeInventoryMenu(user, menuInventory);
+        plugin.getDataEditor().closeInventoryMenu(user, menuInventory);
     }
 
     public final boolean cancelMenuClick(@NotNull OnlineUser user) {
         if (disabling) {
             return true;
         }
-        return huskSync.getDataEditor().cancelInventoryEdit(user);
+        return plugin.getDataEditor().cancelInventoryEdit(user);
     }
 
     public final boolean cancelPlayerEvent(@NotNull OnlineUser user) {

common/src/main/java/net/william278/husksync/player/OnlineUser.java

@@ -6,12 +6,16 @@ import net.william278.husksync.data.*;
 import net.william278.husksync.editor.ItemEditorMenu;
 import net.william278.husksync.event.EventCannon;
 import net.william278.husksync.event.PreSyncEvent;
+import net.william278.husksync.util.Logger;
+import net.william278.husksync.util.Version;
 import org.jetbrains.annotations.NotNull;
 
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.List;
 import java.util.UUID;
 import java.util.concurrent.CompletableFuture;
+import java.util.logging.Level;
 
 /**
  * Represents a logged-in {@link User}
@@ -159,16 +163,32 @@ public abstract class OnlineUser extends User {
      */
     public abstract boolean isOffline();
 
+    /**
+     * Returns the implementing Minecraft server version
+     *
+     * @return The Minecraft server version
+     */
+    @NotNull
+    public abstract Version getMinecraftVersion();
+
     /**
      * Set {@link UserData} to a player
      *
      * @param data     The data to set
      * @param settings Plugin settings, for determining what needs setting
-     * @return a future that will be completed when done
+     * @return a future returning a boolean when complete; if the sync was successful, the future will return {@code true}
      */
-    public final CompletableFuture<Void> setData(@NotNull UserData data, @NotNull Settings settings,
-                                                 @NotNull EventCannon eventCannon) {
-        return CompletableFuture.runAsync(() -> {
+    public final CompletableFuture<Boolean> setData(@NotNull UserData data, @NotNull Settings settings,
+                                                    @NotNull EventCannon eventCannon, @NotNull Logger logger,
+                                                    @NotNull Version serverMinecraftVersion) {
+        return CompletableFuture.supplyAsync(() -> {
+            // Prevent synchronizing newer versions of Minecraft
+            if (Version.minecraftVersion(data.getMinecraftVersion()).compareTo(serverMinecraftVersion) > 0) {
+                logger.log(Level.SEVERE, "Cannot set data for player " + username + " with Minecraft version \""
+                                         + data.getMinecraftVersion() + "\" because it is newer than the server's version, \""
+                                         + serverMinecraftVersion + "\"");
+                return false;
+            }
             final PreSyncEvent preSyncEvent = (PreSyncEvent) eventCannon.firePreSyncEvent(this, data).join();
             final UserData finalData = preSyncEvent.getUserData();
             final List<CompletableFuture<Void>> dataSetOperations = new ArrayList<>() {{
@@ -197,7 +217,14 @@ public abstract class OnlineUser extends User {
                     }
                 }
             }};
-            CompletableFuture.allOf(dataSetOperations.toArray(new CompletableFuture[0])).join();
+            // Apply operations in parallel, join when complete
+            return CompletableFuture.allOf(dataSetOperations.toArray(new CompletableFuture[0])).thenApply(unused -> true)
+                    .exceptionally(exception -> {
+                        // Handle synchronisation exceptions
+                        logger.log(Level.SEVERE, "Failed to set data for player " + username + " (" + exception.getMessage() + ")");
+                        exception.printStackTrace();
+                        return false;
+                    }).join();
         });
 
     }
@@ -240,7 +267,8 @@ public abstract class OnlineUser extends User {
         return CompletableFuture.supplyAsync(
                 () -> new UserData(getStatus().join(), getInventory().join(),
                         getEnderChest().join(), getPotionEffects().join(), getAdvancements().join(),
-                        getStatistics().join(), getLocation().join(), getPersistentDataContainer().join()));
+                        getStatistics().join(), getLocation().join(), getPersistentDataContainer().join(),
+                        getMinecraftVersion().getWithoutMeta()));
     }
 
 }

common/src/main/java/net/william278/husksync/redis/RedisManager.java

@@ -83,10 +83,16 @@ public class RedisManager {
                             final RedisMessage redisMessage = RedisMessage.fromJson(message);
                             plugin.getOnlineUser(redisMessage.targetUserUuid).ifPresent(user -> {
                                 final UserData userData = plugin.getDataAdapter().fromBytes(redisMessage.data);
-                                user.setData(userData, plugin.getSettings(), plugin.getEventCannon()).thenRun(() -> {
-                                    plugin.getLocales().getLocale("data_update_complete")
-                                            .ifPresent(user::sendActionBar);
-                                    plugin.getEventCannon().fireSyncCompleteEvent(user);
+                                user.setData(userData, plugin.getSettings(), plugin.getEventCannon(),
+                                        plugin.getLoggingAdapter(), plugin.getMinecraftVersion()).thenAccept(succeeded -> {
+                                    if (succeeded) {
+                                        plugin.getLocales().getLocale("data_update_complete")
+                                                .ifPresent(user::sendActionBar);
+                                        plugin.getEventCannon().fireSyncCompleteEvent(user);
+                                    } else {
+                                        plugin.getLocales().getLocale("data_update_failed")
+                                                .ifPresent(user::sendMessage);
+                                    }
                                 });
                             });
                         }

common/src/main/java/net/william278/husksync/util/UpdateChecker.java

@@ -13,31 +13,31 @@ public class UpdateChecker {
 
     private final static int SPIGOT_PROJECT_ID = 97144;
     private final Logger logger;
-    private final VersionUtils.Version currentVersion;
+    private final Version currentVersion;
 
-    public UpdateChecker(@NotNull String currentVersion, @NotNull Logger logger) {
-        this.currentVersion = VersionUtils.Version.of(currentVersion);
+    public UpdateChecker(@NotNull Version currentVersion, @NotNull Logger logger) {
+        this.currentVersion = currentVersion;
         this.logger = logger;
     }
 
-    public CompletableFuture<VersionUtils.Version> fetchLatestVersion() {
+    public CompletableFuture<Version> fetchLatestVersion() {
         return CompletableFuture.supplyAsync(() -> {
             try {
                 final URL url = new URL("https://api.spigotmc.org/legacy/update.php?resource=" + SPIGOT_PROJECT_ID);
                 URLConnection urlConnection = url.openConnection();
-                return VersionUtils.Version.of(new BufferedReader(new InputStreamReader(urlConnection.getInputStream())).readLine());
+                return Version.pluginVersion(new BufferedReader(new InputStreamReader(urlConnection.getInputStream())).readLine());
             } catch (Exception e) {
                 logger.log(Level.WARNING, "Failed to fetch the latest plugin version", e);
             }
-            return new VersionUtils.Version();
+            return new Version();
         });
     }
 
-    public boolean isUpdateAvailable(@NotNull VersionUtils.Version latestVersion) {
+    public boolean isUpdateAvailable(@NotNull Version latestVersion) {
         return latestVersion.compareTo(currentVersion) > 0;
     }
 
-    public VersionUtils.Version getCurrentVersion() {
+    public Version getCurrentVersion() {
         return currentVersion;
     }
 

common/src/main/java/net/william278/husksync/util/Version.java

@@ -0,0 +1,84 @@
+package net.william278.husksync.util;
+
+import org.jetbrains.annotations.NotNull;
+
+import java.util.Arrays;
+import java.util.StringJoiner;
+import java.util.regex.Pattern;
+
+public class Version implements Comparable<Version> {
+    private final static String VERSION_SEPARATOR = ".";
+    private final static String MINECRAFT_META_SEPARATOR = "-";
+    private final static String PLUGIN_META_SEPARATOR = "+";
+
+    private int[] versions = new int[]{};
+    @NotNull
+    private String metadata = "";
+    @NotNull
+    private String metaSeparator = "";
+
+    protected Version() {
+    }
+
+    private Version(@NotNull String version, @NotNull String metaSeparator) {
+        this.parse(version, metaSeparator);
+        this.metaSeparator = metaSeparator;
+    }
+
+    @NotNull
+    public static Version pluginVersion(@NotNull String versionString) {
+        return new Version(versionString, PLUGIN_META_SEPARATOR);
+    }
+
+    @NotNull
+    public static Version minecraftVersion(@NotNull String versionString) {
+        return new Version(versionString, MINECRAFT_META_SEPARATOR);
+    }
+
+    private void parse(@NotNull String version, @NotNull String metaSeparator) {
+        int metaIndex = version.indexOf(metaSeparator);
+        if (metaIndex > 0) {
+            this.metadata = version.substring(metaIndex + 1);
+            version = version.substring(0, metaIndex);
+        }
+        String[] versions = version.split(Pattern.quote(VERSION_SEPARATOR));
+        this.versions = Arrays.stream(versions).mapToInt(Integer::parseInt).toArray();
+    }
+
+    @Override
+    public int compareTo(@NotNull Version other) {
+        int length = Math.max(this.versions.length, other.versions.length);
+        for (int i = 0; i < length; i++) {
+            int a = i < this.versions.length ? this.versions[i] : 0;
+            int b = i < other.versions.length ? other.versions[i] : 0;
+
+            if (a < b) return -1;
+            if (a > b) return 1;
+        }
+
+        return 0;
+    }
+
+    @Override
+    public String toString() {
+        final StringJoiner joiner = new StringJoiner(VERSION_SEPARATOR);
+        for (int version : this.versions) {
+            joiner.add(String.valueOf(version));
+        }
+        return joiner + this.metaSeparator + this.metadata;
+    }
+
+    @NotNull
+    public String getWithoutMeta() {
+        final StringJoiner joiner = new StringJoiner(VERSION_SEPARATOR);
+        for (int version : this.versions) {
+            joiner.add(String.valueOf(version));
+        }
+        return joiner.toString();
+    }
+
+    @NotNull
+    public String getMetadata() {
+        return this.metadata;
+    }
+}

common/src/main/java/net/william278/husksync/util/VersionUtils.java

@@ -1,61 +0,0 @@
-package net.william278.husksync.util;
-
-import java.util.Arrays;
-
-public class VersionUtils {
-
-    private final static char META_SEPARATOR = '+';
-    private final static String VERSION_SEPARATOR = "\\.";
-
-
-    public static class Version implements Comparable<Version> {
-        public int[] versions = new int[]{};
-        public String metadata = "";
-
-        public Version() {
-        }
-
-        public Version(String version) {
-            this.parse(version);
-        }
-
-        public static Version of(String version) {
-            return new Version(version);
-        }
-
-        private void parse(String version) {
-            int metaIndex = version.indexOf(META_SEPARATOR);
-            if (metaIndex > 0) {
-                this.metadata = version.substring(metaIndex + 1);
-                version = version.substring(0, metaIndex);
-            }
-            String[] versions = version.split(VERSION_SEPARATOR);
-            this.versions = Arrays.stream(versions).mapToInt(Integer::parseInt).toArray();
-        }
-
-        @Override
-        public int compareTo(Version version) {
-            int length = Math.max(this.versions.length, version.versions.length);
-            for (int i = 0; i < length; i++) {
-                int a = i < this.versions.length ? this.versions[i] : 0;
-                int b = i < version.versions.length ? version.versions[i] : 0;
-
-                if (a < b) return -1;
-                if (a > b) return 1;
-            }
-
-            return 0;
-        }
-
-        @Override
-        public String toString() {
-            StringBuilder stringBuffer = new StringBuilder();
-            for (int version : this.versions) {
-                stringBuffer.append(version).append('.');
-            }
-            stringBuffer.deleteCharAt(stringBuffer.length() - 1);
-            return stringBuffer.append('+').append(this.metadata).toString();
-        }
-    }
-
-}

common/src/main/resources/config.yml

@@ -7,7 +7,7 @@
 language: 'en-gb'
 check_for_updates: true
 cluster_id: ''
-debug_logging: true
+debug_logging: false
 
 database:
   credentials:

common/src/main/resources/database/mysql_schema.sql

@@ -11,7 +11,7 @@ CREATE TABLE IF NOT EXISTS `%users_table%`
 CREATE TABLE IF NOT EXISTS `%user_data_table%`
 (
     `version_uuid` char(36)    NOT NULL UNIQUE,
-    `player_uuid`  char(36)    NOT NULL UNIQUE,
+    `player_uuid`  char(36)    NOT NULL,
     `timestamp`    datetime    NOT NULL,
     `save_cause`   varchar(32) NOT NULL,
     `pinned`       boolean     NOT NULL DEFAULT FALSE,

common/src/main/resources/locales/en-gb.yml

@@ -1,4 +1,5 @@
 synchronisation_complete: '[⏵ Data synchronised!](#00fb9a)'
+synchronisation_failed: '[⏵ Failed to synchronise your data! Please contact an administrator.](#ff7e5e)'
 reload_complete: '[HuskSync](#00fb9a bold) [| Reloaded config and message files.](#00fb9a)'
 error_invalid_syntax: '[Error:](#ff3300) [Incorrect syntax. Usage: %1%](#ff7e5e)'
 error_invalid_player: '[Error:](#ff3300) [Could not find a player by that name.](#ff7e5e)'
@@ -12,15 +13,19 @@ ender_chest_viewer_menu_title: '&0%1%''s Ender Chest'
 inventory_viewer_opened: '[Viewing snapshot of](#00fb9a) [%1%](#00fb9a bold) [''s inventory as of ⌚ %2%](#00fb9a)'
 ender_chest_viewer_opened: '[Viewing snapshot of](#00fb9a) [%1%](#00fb9a bold) [''s Ender Chest as of ⌚ %2%](#00fb9a)'
 data_update_complete: '[🔔 Your data has been updated!](#00fb9a)'
+data_update_failed: '[🔔 Failed to update your data! Please contact an administrator.](#ff7e5e)'
 data_manager_title: '[Viewing user data snapshot](#00fb9a) [%1%](#00fb9a show_text=&7Version UUID:\\n&8%2%) [for](#00fb9a) [%3%](#00fb9a bold show_text=&7Player UUID:\\n&8%4%)[:](#00fb9a)'
-data_manager_timestamp: '[⌚ %1%](#ffc43b-#f5c962 show_text=&7Version timestamp:\\n&7When the data was saved)'
-data_manager_cause: '[⚑ %1%](#23a825-#36f539 show_text=&7Save cause:\\n&7What caused the data to be saved)\\n'
+data_manager_timestamp: '[⌚ %1%](#ffc43b-#f5c962 show_text=&7Version timestamp:\\n&8When the data was saved)'
+data_manager_pinned: '[※ Snapshot pinned](#d8ff2b show_text=&7Pinned:\\n&8This user data snapshot won''t be automatically rotated.)'
+data_manager_cause: '[⚑ %1%](#23a825-#36f539 show_text=&7Save cause:\\n&8What caused the data to be saved)\\n'
 data_manager_status: '[%1%](red)[/](gray)[%2%](red)[×](gray)[❤](red show_text=&7Health points)   [%3%](yellow)[×](gray)[🍖](yellow show_text=&7Hunger points)   [ʟᴠ](green)[.](gray)[%4%](green show_text=&7XP level)   [🏹 %5%](dark_aqua show_text=&7Game mode)'
-data_manager_advancements_statistics: '[⭐ Advancements: %1%](color=#ffc43b-#f5c962 show_text=&7%2%)   [⌛ Play Time: %3%ʜʀs](color=#62a9f5-#7ab8fa show_text=&7⚠ Based on in-game statistics)'
+data_manager_advancements_statistics: '[⭐ Advancements: %1%](color=#ffc43b-#f5c962 show_text=&7Advancements you have progress in:\\n&8%2%)   [⌛ Play Time: %3%ʜʀs](color=#62a9f5-#7ab8fa show_text=&7In-game play time\\n&8⚠ Based on in-game statistics)'
 data_manager_item_buttons: '[[🪣 Inventory…]](color=#a17b5f-#f5b98c show_text=&7Click to view run_command=/inventory %1% %2%)   [[⌀ Ender Chest…]](#b649c4-#d254ff show_text=&7Click to view run_command=/enderchest %1% %2%)\\n'
-data_manager_management_buttons: '[Manage:](gray) [[❌ Delete…]](#ff3300 show_text=&7Click to delete this snapshot of user data.\\nThis will not affect the user''s current data.\\n&#ff3300&⚠ This cannot be undone! run_command=/userdata delete %1% %2%)   [[⏪ Restore…]](#00fb9a show_text=&7Click to restore this user data.\\nThis will set the user''s data to this snapshot.\\n&#ff3300&⚠ %1%''s current data will be overwritten! run_command=/userdata restore %1% %2%)\\n'
+data_manager_management_buttons: '[Manage:](gray) [[❌ Delete…]](#ff3300 show_text=&7Click to delete this snapshot of user data.\\n&8This will not affect the user''s current data.\\n&#ff3300&⚠ This cannot be undone! run_command=/userdata delete %1% %2%)   [[⏪ Restore…]](#00fb9a show_text=&7Click to restore this user data.\\n&8This will set the user''s data to this snapshot.\\n&#ff3300&⚠ %1%''s current data will be overwritten! run_command=/userdata restore %1% %2%)   [[※ Pin/Unpin…]](#d8ff2b show_text=&7Click to pin or unpin this user data snapshot\\n&8Pinned snapshots won''t be automatically rotated run_command=/userdata pin %1% %2%)\\n'
 data_manager_advancements_preview_remaining: '&7and %1% more…'
 data_list_title: '[List of](#00fb9a) [%1%](#00fb9a bold show_text=&7UUID: %2%)[''s user data snapshots:](#00fb9a)\\n'
-data_list_item: '[%1%](gray show_text=&7Snapshot %3% run_command=/userdata view %6% %4%)   [%2%](color=#ffc43b-#f5c962 show_text=&7Version timestamp&7\\n&8When the data was saved run_command=/userdata view %6% %4%)   [⚡ %3%](color=#62a9f5-#7ab8fa show_text=&7Version UUID:&7\\n&8%4% run_command=/userdata view %6% %4%)   [⚑ %5%](#23a825-#36f539 show_text=&7Save cause\\n&8What caused the data to be saved run_command=/userdata view %6% %4%)'
-data_deleted: '[❌ Successfully deleted user data snapshot](#00fb9a) [%1%](#00fb9a show_text=&7Version UUID:\\n&7%2%) [for](#00fb9a) [%3%.](#00fb9a show_text=&7Player UUID:\\n&7%4%)'
-data_restored: '[⏪ Successfully restored](#00fb9a) [%1%](#00fb9a show_text=&7Player UUID:\\n&7%2%)[''s current user data from snapshot](#00fb9a) [%3%.](#00fb9a show_text=&7Version UUID:\\n&7%4%)'
+data_list_item: '[%1%](gray show_text=&7Data snapshot %3% run_command=/userdata view %6% %4%) [%7%](#d8ff2b show_text=&7Pinned:\\n&8Pinned snapshots won''t be automatically rotated. run_command=/userdata view %6% %4%) [%2%](color=#ffc43b-#f5c962 show_text=&7Version timestamp:&7\\n&8When the data was saved run_command=/userdata view %6% %4%)   [⚡ %3%](color=#62a9f5-#7ab8fa show_text=&7Version UUID:&7\\n&8%4% run_command=/userdata view %6% %4%)   [⚑ %5%](#23a825-#36f539 show_text=&7Save cause:\\n&8What caused the data to be saved run_command=/userdata view %6% %4%)'
+data_deleted: '[❌ Successfully deleted user data snapshot](#00fb9a) [%1%](#00fb9a show_text=&7Version UUID:\\n&8%2%) [for](#00fb9a) [%3%.](#00fb9a show_text=&7Player UUID:\\n&8%4%)'
+data_restored: '[⏪ Successfully restored](#00fb9a) [%1%](#00fb9a show_text=&7Player UUID:\\n&8%2%)[''s current user data from snapshot](#00fb9a) [%3%.](#00fb9a show_text=&7Version UUID:\\n&8%4%)'
+data_pinned: '[※ Successfully pinned user data snapshot](#00fb9a) [%1%](#00fb9a show_text=&7Version UUID:\\n&8%2%) [for](#00fb9a) [%3%.](#00fb9a show_text=&7Player UUID:\\n&8%4%)'
+data_unpinned: '[※ Successfully unpinned user data snapshot](#00fb9a) [%1%](#00fb9a show_text=&7Version UUID:\\n&8%2%) [for](#00fb9a) [%3%.](#00fb9a show_text=&7Player UUID:\\n&8%4%)'