Improved Update Checker error handling

(temporary removed broadcast messages)

config.yml

@@ -272,7 +272,10 @@ messages:
     no-update: "&6&lNo new update available."
     
     # Set the message when the update checker is started.
-    checking: "&6&lChecking for Updates..."
+    checking: "&6&lChecking for updates..."
+    
+    # Set the message when an error occurs while checking for updates.
+    error: "&c&lError while checking for updates."
   
   hologram:
   

src/de/epiceric/shopchest/Commands.java

@@ -21,6 +21,7 @@ import de.epiceric.shopchest.utils.ClickType;
 import de.epiceric.shopchest.utils.ClickType.EnumClickType;
 import de.epiceric.shopchest.utils.ShopUtils;
 import de.epiceric.shopchest.utils.UpdateChecker;
+import de.epiceric.shopchest.utils.UpdateChecker.UpdateCheckerResult;
 import net.milkbowl.vault.permission.Permission;
 
 public class Commands extends BukkitCommand {
@@ -182,10 +183,11 @@ public class Commands extends BukkitCommand {
 		player.sendMessage(Config.checking_update());
 		
 		UpdateChecker uc = new UpdateChecker(ShopChest.getInstance(), ShopChest.getInstance().getDescription().getWebsite());
-		if (uc.updateNeeded(player)) {
+		UpdateCheckerResult result = uc.updateNeeded();
+		
+		if (result == UpdateCheckerResult.TRUE) {
 			ShopChest.latestVersion = uc.getVersion();
 			ShopChest.downloadLink = uc.getLink();
-			ShopChest.broadcast = uc.getBroadcast();
 			ShopChest.isUpdateNeeded = true;
 			
 			JsonBuilder jb;
@@ -198,14 +200,18 @@ public class Commands extends BukkitCommand {
 			}		
 			jb.sendJson(player);
 			
-		} else {
+		} else if (result == UpdateCheckerResult.FALSE) {
 			ShopChest.latestVersion = "";
 			ShopChest.downloadLink = "";
 			ShopChest.isUpdateNeeded = false;
 			player.sendMessage(Config.no_new_update());
+		} else {
+			ShopChest.latestVersion = "";
+			ShopChest.downloadLink = "";
+			ShopChest.isUpdateNeeded = false;
+			player.sendMessage(Config.update_check_error());
 		}
 		
-		if (ShopChest.broadcast != null && Config.enable_broadcast()) player.sendMessage(ShopChest.broadcast);
 
 	}
 	

src/de/epiceric/shopchest/ShopChest.java

@@ -10,7 +10,6 @@ import java.util.ArrayList;
 import java.util.logging.Logger;
 
 import org.bukkit.Bukkit;
-import org.bukkit.ChatColor;
 import org.bukkit.entity.Player;
 import org.bukkit.plugin.Plugin;
 import org.bukkit.plugin.RegisteredServiceProvider;
@@ -38,13 +37,13 @@ import de.epiceric.shopchest.utils.Metrics.Graph;
 import de.epiceric.shopchest.utils.Metrics.Plotter;
 import de.epiceric.shopchest.utils.ShopUtils;
 import de.epiceric.shopchest.utils.UpdateChecker;
+import de.epiceric.shopchest.utils.UpdateChecker.UpdateCheckerResult;
 import net.milkbowl.vault.economy.Economy;
 import net.milkbowl.vault.permission.Permission;
 
 public class ShopChest extends JavaPlugin{
 
 	private static ShopChest instance;
-	private static UpdateChecker uc;
 	
 	public static Statement statement;
 	public static Logger logger;
@@ -57,7 +56,6 @@ public class ShopChest extends JavaPlugin{
 	public static boolean isUpdateNeeded = false;
 	public static String latestVersion = "";
 	public static String downloadLink = "";
-	public static String broadcast = null;
 	
 	public static Utils utils;
 	
@@ -190,21 +188,16 @@ public class ShopChest extends JavaPlugin{
 		
 		instance = this;
 
-		if (uc == null) uc = new UpdateChecker(this, getDescription().getWebsite());
+		UpdateChecker uc = new UpdateChecker(this, getDescription().getWebsite());
-		logger.info("Checking for Updates");
+		UpdateCheckerResult result = uc.updateNeeded();
-		if(uc.updateNeeded(Bukkit.getConsoleSender())) {
+		
+		Bukkit.getConsoleSender().sendMessage("[ShopChest] " + Config.checking_update());
+		if(result == UpdateCheckerResult.TRUE) {
 			latestVersion = uc.getVersion();
 			downloadLink = uc.getLink();
-			broadcast = uc.getBroadcast();
 			isUpdateNeeded = true;
-			Bukkit.getConsoleSender().sendMessage("[ShopChest] " + ChatColor.GOLD + "New version available: " + ChatColor.RED + latestVersion);
+			Bukkit.getConsoleSender().sendMessage("[ShopChest] " + Config.update_available(latestVersion));
-			if (broadcast != null && Config.enable_broadcast()) Bukkit.getConsoleSender().sendMessage("[ShopChest] " + broadcast);
+			
-		} else {
-			logger.info("No new version available");
-			isUpdateNeeded = false;
-		}
-		
-		if (isUpdateNeeded) {
 			for (Player p : getServer().getOnlinePlayers()) {
 				if (p.isOp() || perm.has(p, "shopchest.notification.update")) {
 					JsonBuilder jb;
@@ -216,11 +209,21 @@ public class ShopChest extends JavaPlugin{
 						default: return;
 					}
 					jb.sendJson(p);
-					if (broadcast != null && Config.enable_broadcast()) p.sendMessage(broadcast);
 				}
 			}
+			
+		} else if (result == UpdateCheckerResult.FALSE) {
+			latestVersion = "";
+			downloadLink = "";
+			isUpdateNeeded = false;
+			Bukkit.getConsoleSender().sendMessage("[ShopChest] " + Config.no_new_update());
+		} else {
+			latestVersion = "";
+			downloadLink = "";
+			isUpdateNeeded = false;
+			Bukkit.getConsoleSender().sendMessage("[ShopChest] " + Config.update_check_error());
 		}
-		
+
 		File itemNamesFile = new File(getDataFolder(), "item_names.txt");
 		
 		if (!itemNamesFile.exists())

src/de/epiceric/shopchest/config/Config.java

@@ -71,9 +71,9 @@ public class Config {
  	public static String checking_update() {return plugin.getConfig().getString("messages.update.checking").replaceAll("(&([a-f0-9k-or]))", "\u00A7$2");}
  	public static String no_new_update() {return plugin.getConfig().getString("messages.update.no-update").replaceAll("(&([a-f0-9k-or]))", "\u00A7$2");}
  	public static String click_to_download() {return plugin.getConfig().getString("messages.update.click-to-download").replaceAll("(&([a-f0-9k-or]))", "\u00A7$2");}
+	public static String update_check_error() {return plugin.getConfig().getString("messages.update.error").replaceAll("(&([a-f0-9k-or]))", "\u00A7$2");}
  	public static String cannot_sell_item() {return plugin.getConfig().getString("messages.cannot-sell-item").replaceAll("(&([a-f0-9k-or]))", "\u00A7$2");}
 	public static String none() {return plugin.getConfig().getString("messages.shop-info.none").replaceAll("(&([a-f0-9k-or]))", "\u00A7$2");}
-
  	
  	public static String limit_reached(int limit) {
  		return plugin.getConfig().getString("messages.shop-limit-reached").replace(Regex.limit, String.valueOf(limit)).replaceAll("(&([a-f0-9k-or]))", "\u00A7$2");

src/de/epiceric/shopchest/event/NotifyUpdate.java

@@ -35,7 +35,6 @@ public class NotifyUpdate implements Listener {
 					default: return;
 				}		
 				jb.sendJson(p);
-				if (ShopChest.broadcast != null && Config.enable_broadcast()) p.sendMessage(ShopChest.broadcast);
 			}
 		}
 		

src/de/epiceric/shopchest/utils/UpdateChecker.java

@@ -1,28 +1,30 @@
 package de.epiceric.shopchest.utils;
 
-import org.bukkit.command.CommandSender;
-import org.bukkit.command.ConsoleCommandSender;
 import org.jsoup.Connection;
 import org.jsoup.Jsoup;
 import org.jsoup.nodes.Document;
 
 import de.epiceric.shopchest.ShopChest;
-import net.md_5.bungee.api.ChatColor;
 
 public class UpdateChecker {
 
+	public enum UpdateCheckerResult {
+		TRUE,
+		FALSE,
+		ERROR;
+	}
+	
 	private ShopChest plugin;
 	private String url;
 	private String version;
 	private String link;
-	private String broadcast;
 	
 	public UpdateChecker(ShopChest plugin, String url) {
 		this.plugin = plugin;
 		this.url = url;
 	}
 	
-	public boolean updateNeeded(CommandSender sender) {
+	public UpdateCheckerResult updateNeeded() {
 		try {
 			Connection con = Jsoup.connect("http://textuploader.com/all1l/raw");
 			con.userAgent("Mozilla/5.0 (Windows NT 10.0; WOW64; rv:40.0) Gecko/20100101 Firefox/40.0");
@@ -32,15 +34,13 @@ public class UpdateChecker {
 			version = doc.text().split("\\|")[0];
 			link = url + "download?version=" + doc.text().split("\\|")[1];
 			
-			if (doc.text().split("\\|").length == 3) {
+			if(plugin.getDescription().getVersion().equals(version))
-				broadcast = doc.text().split("\\|")[2];
+				return UpdateCheckerResult.FALSE;
-			}
+			else
-			
+				return UpdateCheckerResult.TRUE;
-			return !plugin.getDescription().getVersion().equals(version);
 			
 		} catch (Exception | Error e) {
-			sender.sendMessage((sender instanceof ConsoleCommandSender ? "[ShopChest] " : "") + ChatColor.RED + "Error while checking for updates");
+			return UpdateCheckerResult.ERROR;
-			return false;
 		}
 	}
 	
@@ -51,9 +51,6 @@ public class UpdateChecker {
 	public String getLink() {
 		return link;
 	}
-	
+
-	public String getBroadcast() {
-		return broadcast;
-	}
 	
 }