Don't convert names in config to UUIDs on the main thread

This is pretty messy, but I can't think of a better way to avoid saving about 5 times in a row. Then again, I did just wake up, so my brain may not be on point yet.

plugin/src/main/java/com/lishid/openinv/ConfigUpdater.java

@@ -9,6 +9,7 @@ import java.util.Set;
 import org.bukkit.Material;
 import org.bukkit.OfflinePlayer;
 import org.bukkit.configuration.ConfigurationSection;
+import org.bukkit.scheduler.BukkitRunnable;
 
 public class ConfigUpdater {
 
@@ -20,44 +21,14 @@ public class ConfigUpdater {
         this.plugin = plugin;
     }
 
-    private int getConfigVersion() {
-        return plugin.getConfig().getInt("config-version", 1);
-    }
-
-    private boolean isConfigOutdated() {
-        return getConfigVersion() < CONFIG_VERSION;
-    }
-
     public void checkForUpdates() {
-        if (isConfigOutdated()) {
+        final int version = plugin.getConfig().getInt("config-version", 1);
+        if (version >= CONFIG_VERSION) {
+            return;
+        }
+
         plugin.getLogger().info("Configuration update found! Performing update...");
-            performUpdate();
-            plugin.getLogger().info("Configuration update complete!");
-        }
-    }
 
-    private void performUpdate() {
-        // Update according to the right version
-        switch (getConfigVersion()) {
-            case 1:
-                updateConfig1To2();
-            case 2:
-                updateConfig2To3();
-                break;
-        }
-    }
-
-    private void updateConfig2To3() {
-        plugin.getConfig().set("config-version", 3);
-        plugin.getConfig().set("items.open-inv", null);
-        plugin.getConfig().set("toggles.items.open-inv", null);
-        plugin.getConfig().set("settings.disable-saving", plugin.getConfig().getBoolean("DisableSaving", false));
-        plugin.getConfig().set("DisableSaving", null);
-        // Save the new config
-        plugin.saveConfig();
-    }
-
-    private void updateConfig1To2() {
         // Backup the old config file
         try {
             plugin.getConfig().save(new File(plugin.getDataFolder(), "config_old.yml"));
@@ -66,28 +37,67 @@ public class ConfigUpdater {
             plugin.getLogger().warning("Could not back up config.yml before updating!");
         }
 
+        new BukkitRunnable() {
+            @Override
+            public void run() {
+                switch (version) {
+                case 1:
+                    updateConfig1To2();
+                case 2:
+                    updateConfig2To3();
+                    break;
+                }
+
+                new BukkitRunnable() {
+                    @Override
+                    public void run() {
+                        plugin.saveConfig();
+                        plugin.getLogger().info("Configuration update complete!");
+                    }
+                }.runTaskLater(plugin, 1L); // Run on 1 tick delay; on older versions Bukkit's scheduler is not guaranteed FIFO
+            }
+        }.runTaskAsynchronously(plugin);
+    }
+
+    private void updateConfig2To3() {
+        new BukkitRunnable() {
+            @Override
+            public void run() {
+                plugin.getConfig().set("config-version", 3);
+                plugin.getConfig().set("items.open-inv", null);
+                plugin.getConfig().set("toggles.items.open-inv", null);
+                plugin.getConfig().set("settings.disable-saving",
+                        plugin.getConfig().getBoolean("DisableSaving", false));
+                plugin.getConfig().set("DisableSaving", null);
+            }
+        }.runTask(plugin);
+    }
+
+    private void updateConfig1To2() {
+        new BukkitRunnable() {
+            @Override
+            public void run() {
                 // Get the old config settings
                 int itemOpenInvItemId = plugin.getConfig().getInt("ItemOpenInvItemID", 280);
-        plugin.getConfig().set("ItemOpenInvItemID", null);
                 boolean notifySilentChest = plugin.getConfig().getBoolean("NotifySilentChest", true);
-        plugin.getConfig().set("NotifySilentChest", null);
                 boolean notifyAnyChest = plugin.getConfig().getBoolean("NotifyAnyChest", true);
+                plugin.getConfig().set("ItemOpenInvItemID", null);
+                plugin.getConfig().set("NotifySilentChest", null);
                 plugin.getConfig().set("NotifyAnyChest", null);
+                plugin.getConfig().set("config-version", 2);
+                plugin.getConfig().set("items.open-inv",
+                        getMaterialById(itemOpenInvItemId).toString());
+                plugin.getConfig().set("notify.any-chest", notifyAnyChest);
+                plugin.getConfig().set("notify.silent-chest", notifySilentChest);
+            }
+        }.runTask(plugin);
 
         updateToggles("AnyChest", ".toggle", "toggles.any-chest");
         updateToggles("ItemOpenInv", ".toggle", "toggles.items.open-inv");
         updateToggles("SilentChest", ".toggle", "toggles.silent-chest");
-
-        plugin.getConfig().set("config-version", 2);
-        plugin.getConfig().set("items.open-inv", getMaterialById(itemOpenInvItemId).toString());
-        plugin.getConfig().set("notify.any-chest", notifyAnyChest);
-        plugin.getConfig().set("notify.silent-chest", notifySilentChest);
-
-        // Save the new config
-        plugin.saveConfig();
     }
 
-    private void updateToggles(String sectionName, String suffix, String newSectionName) {
+    private void updateToggles(final String sectionName, String suffix, final String newSectionName) {
         // Ensure section exists
         if (!plugin.getConfig().isConfigurationSection(sectionName)) {
             return;
@@ -101,7 +111,7 @@ public class ConfigUpdater {
             return;
         }
 
-        Map<String, Boolean> toggles = new HashMap<String, Boolean>();
+        final Map<String, Boolean> toggles = new HashMap<String, Boolean>();
 
         for (String playerName : keys) {
             OfflinePlayer player = plugin.matchPlayer(playerName);
@@ -109,20 +119,26 @@ public class ConfigUpdater {
             toggles.put(dataID, section.getBoolean(playerName + suffix, false));
         }
 
+        new BukkitRunnable() {
+            @Override
+            public void run() {
                 // Wipe old ConfigurationSection
                 plugin.getConfig().set(sectionName, null);
-        // Prepare new ConfigurationSection
-        if (plugin.getConfig().isConfigurationSection(newSectionName)) {
-            section = plugin.getConfig().getConfigurationSection(newSectionName);
-        } else {
-            section = plugin.getConfig().createSection(newSectionName);
-        }
 
+                // Prepare new ConfigurationSection
+                ConfigurationSection newSection;
+                if (plugin.getConfig().isConfigurationSection(newSectionName)) {
+                    newSection = plugin.getConfig().getConfigurationSection(newSectionName);
+                } else {
+                    newSection = plugin.getConfig().createSection(newSectionName);
+                }
                 // Set new values
                 for (Map.Entry<String, Boolean> entry : toggles.entrySet()) {
-            section.set(entry.getKey(), entry.getValue());
+                    newSection.set(entry.getKey(), entry.getValue());
                 }
             }
+        }.runTask(plugin);
+    }
 
     @SuppressWarnings("deprecation")
     private Material getMaterialById(int id) {

pom.xml

@@ -10,7 +10,7 @@
 
   <properties>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-    <openinv.version>3.0.2</openinv.version>
+    <openinv.version>3.0.3-SNAPSHOT</openinv.version>
   </properties>
 
   <profiles>