Make the purge progress run more balanced (Fixes #696)

src/main/java/fr/xephi/authme/AuthMe.java

@@ -44,6 +44,11 @@ import fr.xephi.authme.settings.SettingsMigrationService;
 import fr.xephi.authme.settings.SpawnLoader;
 import fr.xephi.authme.settings.properties.DatabaseSettings;
 import fr.xephi.authme.settings.properties.EmailSettings;
+
+import static fr.xephi.authme.settings.properties.EmailSettings.MAIL_ACCOUNT;
+import static fr.xephi.authme.settings.properties.EmailSettings.MAIL_PASSWORD;
+import static fr.xephi.authme.settings.properties.EmailSettings.RECALL_PLAYERS;
+
 import fr.xephi.authme.settings.properties.HooksSettings;
 import fr.xephi.authme.settings.properties.PluginSettings;
 import fr.xephi.authme.settings.properties.PurgeSettings;
@@ -51,6 +56,7 @@ import fr.xephi.authme.settings.properties.RestrictionSettings;
 import fr.xephi.authme.settings.properties.SecuritySettings;
 import fr.xephi.authme.settings.properties.SettingsFieldRetriever;
 import fr.xephi.authme.settings.propertymap.PropertyMap;
+import fr.xephi.authme.task.PurgeTask;
 import fr.xephi.authme.util.BukkitService;
 import fr.xephi.authme.util.CollectionUtils;
 import fr.xephi.authme.util.FileUtils;
@@ -58,6 +64,18 @@ import fr.xephi.authme.util.GeoLiteAPI;
 import fr.xephi.authme.util.MigrationService;
 import fr.xephi.authme.util.StringUtils;
 import fr.xephi.authme.util.Utils;
+
+import java.io.File;
+import java.sql.SQLException;
+import java.util.ArrayList;
+import java.util.Calendar;
+import java.util.Collection;
+import java.util.Date;
+import java.util.List;
+import java.util.Set;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.logging.Logger;
+
 import org.apache.logging.log4j.LogManager;
 import org.bukkit.Bukkit;
 import org.bukkit.Location;
@@ -70,20 +88,6 @@ import org.bukkit.plugin.java.JavaPlugin;
 import org.bukkit.scheduler.BukkitScheduler;
 import org.bukkit.scheduler.BukkitTask;
 
-import java.io.File;
-import java.sql.SQLException;
-import java.util.ArrayList;
-import java.util.Calendar;
-import java.util.Collection;
-import java.util.Date;
-import java.util.List;
-import java.util.concurrent.ConcurrentHashMap;
-import java.util.logging.Logger;
-
-import static fr.xephi.authme.settings.properties.EmailSettings.MAIL_ACCOUNT;
-import static fr.xephi.authme.settings.properties.EmailSettings.MAIL_PASSWORD;
-import static fr.xephi.authme.settings.properties.EmailSettings.RECALL_PLAYERS;
-
 /**
  * The AuthMe main class.
  */
@@ -688,33 +692,21 @@ public class AuthMe extends JavaPlugin {
         if (!newSettings.getProperty(PurgeSettings.USE_AUTO_PURGE) || autoPurging) {
             return;
         }
+
         autoPurging = true;
-        getServer().getScheduler().runTaskAsynchronously(this, new Runnable() {
+
-            @Override
+        ConsoleLogger.info("AutoPurging the Database...");
-            public void run() {
+        Calendar calendar = Calendar.getInstance();
-                ConsoleLogger.info("AutoPurging the Database...");
+        calendar.add(Calendar.DATE, -newSettings.getProperty(PurgeSettings.DAYS_BEFORE_REMOVE_PLAYER));
-                Calendar calendar = Calendar.getInstance();
+        long until = calendar.getTimeInMillis();
-                calendar.add(Calendar.DATE, -newSettings.getProperty(PurgeSettings.DAYS_BEFORE_REMOVE_PLAYER));
+        Set<String> cleared = database.autoPurgeDatabase(until);
-                long until = calendar.getTimeInMillis();
+        if (CollectionUtils.isEmpty(cleared)) {
-                List<String> cleared = database.autoPurgeDatabase(until);
+            return;
-                if (CollectionUtils.isEmpty(cleared)) {
+        }
-                    return;
+
-                }
+        ConsoleLogger.info("AutoPurging the Database: " + cleared.size() + " accounts removed!");
-                ConsoleLogger.info("AutoPurging the Database: " + cleared.size() + " accounts removed!");
+        ConsoleLogger.info("Purging user accounts...");
-                if (newSettings.getProperty(PurgeSettings.REMOVE_ESSENTIALS_FILES) && pluginHooks.isEssentialsAvailable())
+        new PurgeTask(plugin, newSettings, Bukkit.getConsoleSender(), cleared).runTaskTimer(plugin, 0, 1);
-                    dataManager.purgeEssentials(cleared);
-                if (newSettings.getProperty(PurgeSettings.REMOVE_PLAYER_DAT))
-                    dataManager.purgeDat(cleared);
-                if (newSettings.getProperty(PurgeSettings.REMOVE_LIMITED_CREATIVE_INVENTORIES))
-                    dataManager.purgeLimitedCreative(cleared);
-                if (newSettings.getProperty(PurgeSettings.REMOVE_ANTI_XRAY_FILE))
-                    dataManager.purgeAntiXray(cleared);
-                if (newSettings.getProperty(PurgeSettings.REMOVE_PERMISSIONS))
-                    dataManager.purgePermissions(cleared);
-                ConsoleLogger.info("AutoPurge Finished!");
-                autoPurging = false;
-            }
-        });
     }
 
     // Return the spawn location of a player
@@ -825,4 +817,7 @@ public class AuthMe extends JavaPlugin {
         return pluginHooks;
     }
 
+    public void notifyAutoPurgeEnd() {
+        this.autoPurging = false;
+    }
 }

src/main/java/fr/xephi/authme/DataManager.java

@@ -6,16 +6,14 @@ import fr.xephi.authme.settings.NewSetting;
 import fr.xephi.authme.settings.properties.PurgeSettings;
 import fr.xephi.authme.util.BukkitService;
 import fr.xephi.authme.util.Utils;
-import org.bukkit.Bukkit;
 import org.bukkit.OfflinePlayer;
 import org.bukkit.Server;
 
 import javax.inject.Inject;
 import java.io.File;
-import java.util.ArrayList;
-import java.util.List;
 
 import static fr.xephi.authme.util.StringUtils.makePath;
+import java.util.Set;
 
 /**
  */
@@ -34,25 +32,14 @@ public class DataManager {
 
     DataManager() { }
 
-    private List<OfflinePlayer> getOfflinePlayers(List<String> names) {
+    public void purgeAntiXray(Set<String> cleared) {
-        List<OfflinePlayer> result = new ArrayList<>();
-        for (OfflinePlayer op : Bukkit.getOfflinePlayers()) {
-            for (String name : names) {
-                if (name.equalsIgnoreCase(op.getName())) {
-                    result.add(op);
-                }
-            }
-        }
-        return result;
-    }
-
-    public void purgeAntiXray(List<String> cleared) {
         int i = 0;
         File dataFolder = new File("." + File.separator + "plugins" + File.separator + "AntiXRayData"
             + File.separator + "PlayerData");
         if (!dataFolder.exists() || !dataFolder.isDirectory()) {
             return;
         }
+
         for (String file : dataFolder.list()) {
             if (cleared.contains(file.toLowerCase())) {
                 File playerFile = new File(dataFolder, file);
@@ -61,10 +48,11 @@ public class DataManager {
                 }
             }
         }
+
         ConsoleLogger.info("AutoPurge: Removed " + i + " AntiXRayData Files");
     }
 
-    public synchronized void purgeLimitedCreative(List<String> cleared) {
+    public synchronized void purgeLimitedCreative(Set<String> cleared) {
         int i = 0;
         File dataFolder = new File("." + File.separator + "plugins" + File.separator + "LimitedCreative"
             + File.separator + "inventories");
@@ -101,17 +89,18 @@ public class DataManager {
         ConsoleLogger.info("AutoPurge: Removed " + i + " LimitedCreative Survival, Creative and Adventure files");
     }
 
-    public synchronized void purgeDat(List<String> cleared) {
+    public synchronized void purgeDat(Set<OfflinePlayer> cleared) {
         int i = 0;
-        File dataFolder = new File(server.getWorldContainer(),
+        File dataFolder = new File(server.getWorldContainer()
-            makePath(settings.getProperty(PurgeSettings.DEFAULT_WORLD), "players"));
+                , makePath(settings.getProperty(PurgeSettings.DEFAULT_WORLD), "players"));
-        List<OfflinePlayer> offlinePlayers = getOfflinePlayers(cleared);
+
-        for (OfflinePlayer player : offlinePlayers) {
+        for (OfflinePlayer offlinePlayer : cleared) {
-            File playerFile = new File(dataFolder, Utils.getUUIDorName(player) + ".dat");
+            File playerFile = new File(dataFolder, Utils.getUUIDorName(offlinePlayer) + ".dat");
             if (playerFile.delete()) {
                 i++;
             }
         }
+
         ConsoleLogger.info("AutoPurge: Removed " + i + " .dat Files");
     }
 
@@ -120,7 +109,7 @@ public class DataManager {
      *
      * @param cleared List of String
      */
-    public void purgeEssentials(List<String> cleared) {
+    public void purgeEssentials(Set<OfflinePlayer> cleared) {
         int i = 0;
         File essentialsDataFolder = pluginHooks.getEssentialsDataFolder();
         if (essentialsDataFolder == null) {
@@ -132,9 +121,9 @@ public class DataManager {
         if (!userDataFolder.exists() || !userDataFolder.isDirectory()) {
             return;
         }
-        List<OfflinePlayer> offlinePlayers = getOfflinePlayers(cleared);
+
-        for (OfflinePlayer player : offlinePlayers) {
+        for (OfflinePlayer offlinePlayer : cleared) {
-            File playerFile = new File(userDataFolder, Utils.getUUIDorName(player) + ".yml");
+            File playerFile = new File(userDataFolder, Utils.getUUIDorName(offlinePlayer) + ".yml");
             if (playerFile.exists() && playerFile.delete()) {
                 i++;
             }
@@ -145,10 +134,12 @@ public class DataManager {
 
     // TODO: What is this method for? Is it correct?
     // TODO: Make it work with OfflinePlayers group data.
-    public synchronized void purgePermissions(List<String> cleared) {
+    public synchronized void purgePermissions(Set<OfflinePlayer> cleared) {
-        for (String name : cleared) {
+        for (OfflinePlayer offlinePlayer : cleared) {
+            String name = offlinePlayer.getName();
             permissionsManager.removeAllGroups(bukkitService.getPlayerExact(name));
         }
+
         ConsoleLogger.info("AutoPurge: Removed permissions from " + cleared.size() + " player(s).");
     }
 }

src/main/java/fr/xephi/authme/command/executable/authme/PurgeBannedPlayersCommand.java

@@ -5,14 +5,18 @@ import fr.xephi.authme.command.CommandService;
 import fr.xephi.authme.command.ExecutableCommand;
 import fr.xephi.authme.datasource.DataSource;
 import fr.xephi.authme.hooks.PluginHooks;
-import fr.xephi.authme.settings.properties.PurgeSettings;
+import fr.xephi.authme.task.PurgeTask;
 import fr.xephi.authme.util.BukkitService;
-import org.bukkit.OfflinePlayer;
+
-import org.bukkit.command.CommandSender;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
 
 import javax.inject.Inject;
-import java.util.ArrayList;
+import org.bukkit.ChatColor;
-import java.util.List;
+
+import org.bukkit.OfflinePlayer;
+import org.bukkit.command.CommandSender;
 
 /**
  * Command for purging data of banned players. Depending on the settings
@@ -35,24 +39,17 @@ public class PurgeBannedPlayersCommand implements ExecutableCommand {
     @Override
     public void executeCommand(CommandSender sender, List<String> arguments, CommandService commandService) {
         // Get the list of banned players
-        List<String> bannedPlayers = new ArrayList<>();
+        Set<String> bannedPlayers = new HashSet<>();
         for (OfflinePlayer offlinePlayer : bukkitService.getBannedPlayers()) {
             bannedPlayers.add(offlinePlayer.getName().toLowerCase());
         }
 
+        //todo: note this should may run async because it may executes a SQL-Query
         // Purge the banned players
         dataSource.purgeBanned(bannedPlayers);
-        if (commandService.getProperty(PurgeSettings.REMOVE_ESSENTIALS_FILES)
-            && pluginHooks.isEssentialsAvailable())
-            plugin.dataManager.purgeEssentials(bannedPlayers);
-        if (commandService.getProperty(PurgeSettings.REMOVE_PLAYER_DAT))
-            plugin.dataManager.purgeDat(bannedPlayers);
-        if (commandService.getProperty(PurgeSettings.REMOVE_LIMITED_CREATIVE_INVENTORIES))
-            plugin.dataManager.purgeLimitedCreative(bannedPlayers);
-        if (commandService.getProperty(PurgeSettings.REMOVE_ANTI_XRAY_FILE))
-            plugin.dataManager.purgeAntiXray(bannedPlayers);
 
         // Show a status message
-        sender.sendMessage("[AuthMe] Database has been purged correctly");
+        sender.sendMessage(ChatColor.GOLD + "Purging user accounts...");
+        new PurgeTask(plugin, plugin.getSettings(), sender, bannedPlayers).runTaskTimer(plugin, 0, 1);
     }
 }

src/main/java/fr/xephi/authme/command/executable/authme/PurgeCommand.java

@@ -5,13 +5,15 @@ import fr.xephi.authme.command.CommandService;
 import fr.xephi.authme.command.ExecutableCommand;
 import fr.xephi.authme.datasource.DataSource;
 import fr.xephi.authme.hooks.PluginHooks;
-import fr.xephi.authme.settings.properties.PurgeSettings;
+import fr.xephi.authme.task.PurgeTask;
+import fr.xephi.authme.util.BukkitService;
 import org.bukkit.ChatColor;
 import org.bukkit.command.CommandSender;
 
 import javax.inject.Inject;
 import java.util.Calendar;
 import java.util.List;
+import java.util.Set;
 
 /**
  * Command for purging the data of players which have not been since for a given number
@@ -27,6 +29,9 @@ public class PurgeCommand implements ExecutableCommand {
     @Inject
     private PluginHooks pluginHooks;
 
+    @Inject
+    private BukkitService bukkitService;
+
     @Inject
     private AuthMe plugin;
 
@@ -56,24 +61,13 @@ public class PurgeCommand implements ExecutableCommand {
         calendar.add(Calendar.DATE, -days);
         long until = calendar.getTimeInMillis();
 
+        //todo: note this should may run async because it may executes a SQL-Query
         // Purge the data, get the purged values
-        List<String> purged = dataSource.autoPurgeDatabase(until);
+        Set<String> purged = dataSource.autoPurgeDatabase(until);
 
         // Show a status message
         sender.sendMessage(ChatColor.GOLD + "Deleted " + purged.size() + " user accounts");
-
+        sender.sendMessage(ChatColor.GOLD + "Purging user accounts...");
-        // Purge other data
+        new PurgeTask(plugin, plugin.getSettings(), sender, purged).runTaskTimer(plugin, 0, 1);
-        if (commandService.getProperty(PurgeSettings.REMOVE_ESSENTIALS_FILES)
-            && pluginHooks.isEssentialsAvailable())
-            plugin.dataManager.purgeEssentials(purged);
-        if (commandService.getProperty(PurgeSettings.REMOVE_PLAYER_DAT))
-            plugin.dataManager.purgeDat(purged);
-        if (commandService.getProperty(PurgeSettings.REMOVE_LIMITED_CREATIVE_INVENTORIES))
-            plugin.dataManager.purgeLimitedCreative(purged);
-        if (commandService.getProperty(PurgeSettings.REMOVE_ANTI_XRAY_FILE))
-            plugin.dataManager.purgeAntiXray(purged);
-
-        // Show a status message
-        sender.sendMessage(ChatColor.GREEN + "[AuthMe] Database has been purged correctly");
     }
 }

src/main/java/fr/xephi/authme/datasource/CacheDataSource.java

@@ -15,6 +15,7 @@ import fr.xephi.authme.security.crypts.HashedPassword;
 
 import java.util.ArrayList;
 import java.util.List;
+import java.util.Set;
 import java.util.concurrent.Callable;
 import java.util.concurrent.Executors;
 import java.util.concurrent.TimeUnit;
@@ -137,11 +138,12 @@ public class CacheDataSource implements DataSource {
     }
 
     @Override
-    public List<String> autoPurgeDatabase(long until) {
+    public Set<String> autoPurgeDatabase(long until) {
-        List<String> cleared = source.autoPurgeDatabase(until);
+        Set<String> cleared = source.autoPurgeDatabase(until);
         for (String name : cleared) {
             cachedAuths.invalidate(name);
         }
+
         return cleared;
     }
 
@@ -187,7 +189,7 @@ public class CacheDataSource implements DataSource {
     }
 
     @Override
-    public synchronized void purgeBanned(final List<String> banned) {
+    public synchronized void purgeBanned(final Set<String> banned) {
         source.purgeBanned(banned);
         cachedAuths.invalidateAll(banned);
     }

src/main/java/fr/xephi/authme/datasource/DataSource.java

@@ -4,6 +4,7 @@ import fr.xephi.authme.cache.auth.PlayerAuth;
 import fr.xephi.authme.security.crypts.HashedPassword;
 
 import java.util.List;
+import java.util.Set;
 
 /**
  * Interface for manipulating {@link PlayerAuth} objects from a data source.
@@ -74,7 +75,7 @@ public interface DataSource {
      * @param until The minimum last login
      * @return The account names that have been removed
      */
-    List<String> autoPurgeDatabase(long until);
+    Set<String> autoPurgeDatabase(long until);
 
     /**
      * Remove a user record from the database.
@@ -126,7 +127,7 @@ public interface DataSource {
      *
      * @param banned the list of players to delete
      */
-    void purgeBanned(List<String> banned);
+    void purgeBanned(Set<String> banned);
 
     /**
      * Return the data source type.

src/main/java/fr/xephi/authme/datasource/FlatFile.java

@@ -17,7 +17,9 @@ import java.io.FileReader;
 import java.io.FileWriter;
 import java.io.IOException;
 import java.util.ArrayList;
+import java.util.HashSet;
 import java.util.List;
+import java.util.Set;
 
 /**
  * Deprecated flat file datasource. The only method guaranteed to work is {@link FlatFile#getAllAuths()}
@@ -227,11 +229,11 @@ public class FlatFile implements DataSource {
     }
 
     @Override
-    public List<String> autoPurgeDatabase(long until) {
+    public Set<String> autoPurgeDatabase(long until) {
         BufferedReader br = null;
         BufferedWriter bw = null;
         ArrayList<String> lines = new ArrayList<>();
-        List<String> cleared = new ArrayList<>();
+        Set<String> cleared = new HashSet<>();
         try {
             br = new BufferedReader(new FileReader(source));
             String line;
@@ -256,6 +258,7 @@ public class FlatFile implements DataSource {
             silentClose(br);
             silentClose(bw);
         }
+
         return cleared;
     }
 
@@ -414,7 +417,7 @@ public class FlatFile implements DataSource {
     }
 
     @Override
-    public void purgeBanned(List<String> banned) {
+    public void purgeBanned(Set<String> banned) {
         BufferedReader br = null;
         BufferedWriter bw = null;
         ArrayList<String> lines = new ArrayList<>();

src/main/java/fr/xephi/authme/datasource/MySQL.java

@@ -24,7 +24,9 @@ import java.sql.SQLException;
 import java.sql.Statement;
 import java.sql.Types;
 import java.util.ArrayList;
+import java.util.HashSet;
 import java.util.List;
+import java.util.Set;
 
 /**
  */
@@ -610,8 +612,8 @@ public class MySQL implements DataSource {
     }
 
     @Override
-    public synchronized List<String> autoPurgeDatabase(long until) {
+    public synchronized Set<String> autoPurgeDatabase(long until) {
-        List<String> list = new ArrayList<>();
+        Set<String> list = new HashSet<>();
         String select = "SELECT " + col.NAME + " FROM " + tableName + " WHERE " + col.LAST_LOGIN + "<?;";
         String delete = "DELETE FROM " + tableName + " WHERE " + col.LAST_LOGIN + "<?;";
         try (Connection con = getConnection();
@@ -628,6 +630,7 @@ public class MySQL implements DataSource {
         } catch (SQLException ex) {
             logSqlException(ex);
         }
+
         return list;
     }
 
@@ -738,7 +741,7 @@ public class MySQL implements DataSource {
     }
 
     @Override
-    public synchronized void purgeBanned(List<String> banned) {
+    public synchronized void purgeBanned(Set<String> banned) {
         String sql = "DELETE FROM " + tableName + " WHERE " + col.NAME + "=?;";
         try (Connection con = getConnection(); PreparedStatement pst = con.prepareStatement(sql)) {
             for (String name : banned) {

src/main/java/fr/xephi/authme/datasource/SQLite.java

@@ -16,7 +16,9 @@ import java.sql.ResultSet;
 import java.sql.SQLException;
 import java.sql.Statement;
 import java.util.ArrayList;
+import java.util.HashSet;
 import java.util.List;
+import java.util.Set;
 
 /**
  */
@@ -285,8 +287,8 @@ public class SQLite implements DataSource {
     }
 
     @Override
-    public List<String> autoPurgeDatabase(long until) {
+    public Set<String> autoPurgeDatabase(long until) {
-        List<String> list = new ArrayList<>();
+        Set<String> list = new HashSet<>();
         String select = "SELECT " + col.NAME + " FROM " + tableName + " WHERE " + col.LAST_LOGIN + "<?;";
         String delete = "DELETE FROM " + tableName + " WHERE " + col.LAST_LOGIN + "<?;";
         try (PreparedStatement selectPst = con.prepareStatement(select);
@@ -302,6 +304,7 @@ public class SQLite implements DataSource {
         } catch (SQLException ex) {
             logSqlException(ex);
         }
+
         return list;
     }
 
@@ -425,7 +428,7 @@ public class SQLite implements DataSource {
     }
 
     @Override
-    public void purgeBanned(List<String> banned) {
+    public void purgeBanned(Set<String> banned) {
         String sql = "DELETE FROM " + tableName + " WHERE " + col.NAME + "=?;";
         try (PreparedStatement pst = con.prepareStatement(sql)) {
             for (String name : banned) {

src/main/java/fr/xephi/authme/task/PurgeTask.java

@@ -0,0 +1,151 @@
+package fr.xephi.authme.task;
+
+import fr.xephi.authme.AuthMe;
+import fr.xephi.authme.ConsoleLogger;
+import fr.xephi.authme.settings.NewSetting;
+import fr.xephi.authme.settings.properties.PurgeSettings;
+
+import java.util.HashSet;
+import java.util.Set;
+import java.util.UUID;
+
+import org.bukkit.Bukkit;
+import org.bukkit.ChatColor;
+import org.bukkit.OfflinePlayer;
+import org.bukkit.command.CommandSender;
+import org.bukkit.entity.Player;
+import org.bukkit.scheduler.BukkitRunnable;
+
+public class PurgeTask extends BukkitRunnable {
+
+    //how many players we should check for each tick
+    private static final int INTERVALL_CHECK = 5;
+
+    private final AuthMe plugin;
+    private final NewSetting newSetting;
+
+    private final UUID sender;
+    private final Set<String> toPurge;
+
+    private final boolean autoPurging;
+    private final int totalPurgeCount;
+
+    private int currentPage = 0;
+
+    public PurgeTask(AuthMe plugin, NewSetting newSetting, CommandSender sender, Set<String> purged) {
+        this(plugin, newSetting, sender, purged, false);
+    }
+
+    public PurgeTask(AuthMe plugin, NewSetting newSetting, CommandSender sender, Set<String> purged
+            , boolean autoPurging) {
+        this.plugin = plugin;
+        this.newSetting = newSetting;
+
+        if (sender instanceof Player) {
+            this.sender = ((Player) sender).getUniqueId();
+        } else {
+            this.sender = null;
+        }
+
+        this.toPurge = purged;
+        this.totalPurgeCount = purged.size();
+        this.autoPurging = autoPurging;
+
+        //this is commented out because I assume all players in the database already have an lowercase name
+//        toPurge = new HashSet<>(purged.size());
+        //make a new list with lowercase names to make the username test based on a hash
+//        for (String username : purged) {
+//            toPurge.add(username.toLowerCase());
+//        }
+    }
+
+    @Override
+    public void run() {
+        if (toPurge.isEmpty()) {
+            //everything was removed
+            finish();
+            return;
+        }
+
+        Set<OfflinePlayer> playerPortion = new HashSet<OfflinePlayer>(INTERVALL_CHECK);
+        Set<String> namePortion = new HashSet<String>(INTERVALL_CHECK);
+        OfflinePlayer[] offlinePlayers = Bukkit.getOfflinePlayers();
+        for (int i = 0; i < INTERVALL_CHECK; i++) {
+            int nextPosition = (currentPage * INTERVALL_CHECK) + i;
+            if (offlinePlayers.length >= nextPosition) {
+                //no more offline players on this page
+                break;
+            }
+
+            OfflinePlayer offlinePlayer = offlinePlayers[nextPosition];
+            String offlineName = offlinePlayer.getName();
+            //remove to speed up later lookups
+            if (toPurge.remove(offlineName.toLowerCase())) {
+                playerPortion.add(offlinePlayer);
+                namePortion.add(offlinePlayer.getName());
+            }
+        }
+
+        if (!toPurge.isEmpty() && playerPortion.isEmpty()) {
+            ConsoleLogger.info("Finished lookup up offlinePlayers. Begin looking purging player names only");
+
+            //we went through all offlineplayers but there are still names remaining
+            namePortion.addAll(toPurge);
+            toPurge.clear();
+        }
+
+        currentPage++;
+        purgeData(playerPortion, namePortion);
+        if (currentPage % 20 == 0) {
+            int completed = totalPurgeCount - toPurge.size();
+            sendMessage("[AuthMe] Purge progress " + completed + '/' + totalPurgeCount);
+        }
+    }
+
+    private void purgeData(Set<OfflinePlayer> playerPortion, Set<String> namePortion) {
+        // Purge other data
+        if (newSetting.getProperty(PurgeSettings.REMOVE_ESSENTIALS_FILES)
+                && plugin.getPluginHooks().isEssentialsAvailable()) {
+            plugin.dataManager.purgeEssentials(playerPortion);
+        }
+
+        if (newSetting.getProperty(PurgeSettings.REMOVE_PLAYER_DAT)) {
+            plugin.dataManager.purgeDat(playerPortion);
+        }
+
+        if (newSetting.getProperty(PurgeSettings.REMOVE_LIMITED_CREATIVE_INVENTORIES)) {
+            plugin.dataManager.purgeLimitedCreative(namePortion);
+        }
+
+        if (newSetting.getProperty(PurgeSettings.REMOVE_ANTI_XRAY_FILE)) {
+            plugin.dataManager.purgeAntiXray(namePortion);
+        }
+
+        if (newSetting.getProperty(PurgeSettings.REMOVE_PERMISSIONS)) {
+            plugin.dataManager.purgePermissions(playerPortion);
+        }
+    }
+
+    private void finish() {
+        cancel();
+
+        // Show a status message
+        sendMessage(ChatColor.GREEN + "[AuthMe] Database has been purged correctly");
+
+        ConsoleLogger.info("AutoPurge Finished!");
+        if (autoPurging) {
+            plugin.notifyAutoPurgeEnd();
+        }
+    }
+
+    private void sendMessage(String message) {
+        if (sender == null) {
+            Bukkit.getConsoleSender().sendMessage(message);
+        } else {
+            Player player = Bukkit.getPlayer(sender);
+            if (player != null) {
+                player.sendMessage(message);
+            }
+        }
+    }
+}