From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Wed, 14 Dec 2022 15:52:11 -0800
Subject: [PATCH] Improve logging and errors

Co-authored-by: Jason Penilla <11360596+jpenilla@users.noreply.github.com>

diff --git a/src/main/java/net/minecraft/advancements/AdvancementTree.java b/src/main/java/net/minecraft/advancements/AdvancementTree.java
index 2665170b8391a77d6b3fb7ae7b5ccfc0be65acd7..e00d4e0896c0163c43d79af63338de67c7cb0dc4 100644
--- a/src/main/java/net/minecraft/advancements/AdvancementTree.java
+++ b/src/main/java/net/minecraft/advancements/AdvancementTree.java
@@ -35,7 +35,7 @@ public class AdvancementTree {
             this.remove(advancementnode1);
         }
 
-        AdvancementTree.LOGGER.info("Forgot about advancement {}", advancement.holder());
+        AdvancementTree.LOGGER.debug("Forgot about advancement {}", advancement.holder()); // Paper - Improve logging and errors
         this.nodes.remove(advancement.holder().id());
         if (advancement.parent() == null) {
             this.roots.remove(advancement);
@@ -77,7 +77,7 @@ public class AdvancementTree {
             }
         }
 
-        // AdvancementTree.LOGGER.info("Loaded {} advancements", this.nodes.size()); // CraftBukkit - moved to AdvancementDataWorld#reload
+        // AdvancementTree.LOGGER.info("Loaded {} advancements", this.nodes.size()); // CraftBukkit - moved to AdvancementDataWorld#reload // Paper - Improve logging and errors; you say it was moved... but it wasn't :) it should be moved however, since this is called when the API creates an advancement
     }
 
     private boolean tryInsert(AdvancementHolder advancement) {
diff --git a/src/main/java/net/minecraft/server/ServerAdvancementManager.java b/src/main/java/net/minecraft/server/ServerAdvancementManager.java
index 611081844ea18361d0219ab94ba3f5f72c63cf6b..debd90fda75048f5352e7cddaeeb8121ed74b19c 100644
--- a/src/main/java/net/minecraft/server/ServerAdvancementManager.java
+++ b/src/main/java/net/minecraft/server/ServerAdvancementManager.java
@@ -53,6 +53,7 @@ public class ServerAdvancementManager extends SimpleJsonResourceReloadListener<A
         AdvancementTree advancementtree = new AdvancementTree();
 
         advancementtree.addAll(this.advancements.values());
+        LOGGER.info("Loaded {} advancements", advancementtree.nodes().size()); // Paper - Improve logging and errors; moved from AdvancementTree#addAll
         Iterator iterator = advancementtree.roots().iterator();
 
         while (iterator.hasNext()) {
diff --git a/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java b/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
index 4e47611f85f3db6a638d0fc6a0dd712b245cf229..ebe6a002d883721d80cbfcc004064e8a57934a56 100644
--- a/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
+++ b/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
@@ -279,6 +279,7 @@ public class DedicatedServer extends MinecraftServer implements ServerInterface
             DedicatedServer.LOGGER.warn("**** FAILED TO BIND TO PORT!");
             DedicatedServer.LOGGER.warn("The exception was: {}", ioexception.toString());
             DedicatedServer.LOGGER.warn("Perhaps a server is already running on that port?");
+            if (true) throw new IllegalStateException("Failed to bind to port", ioexception); // Paper - Propagate failed to bind to port error
             return false;
         }
 
diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
index c078b3bc75e52456f458c7febc51ea6f8b29f737..ce818321177df69ee81a9a237f2f44216ecea640 100644
--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
@@ -3502,7 +3502,7 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl
 
                     this.resetPlayerChatState(remotechatsession_a.validate(this.player.getGameProfile(), signaturevalidator));
                 } catch (ProfilePublicKey.ValidationException profilepublickey_b) {
-                    ServerGamePacketListenerImpl.LOGGER.error("Failed to validate profile key: {}", profilepublickey_b.getMessage());
+                    // ServerGamePacketListenerImpl.LOGGER.error("Failed to validate profile key: {}", profilepublickey_b.getMessage()); // Paper - Improve logging and errors
                     this.disconnect(profilepublickey_b.getComponent(), profilepublickey_b.kickCause); // Paper - kick event causes
                 }
 
diff --git a/src/main/java/net/minecraft/server/packs/PathPackResources.java b/src/main/java/net/minecraft/server/packs/PathPackResources.java
index ed1d3d30404dfc6303e746f31295b6b1aa40f204..8d7565eda4536e8aa42dd3dcbcfac38cbf16020a 100644
--- a/src/main/java/net/minecraft/server/packs/PathPackResources.java
+++ b/src/main/java/net/minecraft/server/packs/PathPackResources.java
@@ -103,6 +103,12 @@ public class PathPackResources extends AbstractPackResources {
         try (DirectoryStream<Path> directoryStream = Files.newDirectoryStream(path)) {
             for (Path path2 : directoryStream) {
                 String string = path2.getFileName().toString();
+                // Paper start - Improve logging and errors
+                if (!Files.isDirectory(path2)) {
+                    LOGGER.error("Invalid directory entry: {} in {}.", string, this.root, new java.nio.file.NotDirectoryException(string));
+                    continue;
+                }
+                // Paper end - Improve logging and errors
                 if (ResourceLocation.isValidNamespace(string)) {
                     set.add(string);
                 } else {
diff --git a/src/main/java/org/bukkit/craftbukkit/legacy/CraftLegacy.java b/src/main/java/org/bukkit/craftbukkit/legacy/CraftLegacy.java
index 46787d68eadc789c3409c0845f3fb0be713c70cc..51ae8eddadc87b143b93521a3cef374f1e3a24dc 100644
--- a/src/main/java/org/bukkit/craftbukkit/legacy/CraftLegacy.java
+++ b/src/main/java/org/bukkit/craftbukkit/legacy/CraftLegacy.java
@@ -44,6 +44,7 @@ import org.bukkit.material.MaterialData;
  */
 @Deprecated
 public final class CraftLegacy {
+    private static final org.slf4j.Logger LOGGER = com.mojang.logging.LogUtils.getLogger(); // Paper - Improve logging and errors
 
     private static final Map<Byte, Material> SPAWN_EGGS = new HashMap<>();
     private static final Set<String> whitelistedStates = new HashSet<>(Arrays.asList("explode", "check_decay", "decayable", "facing"));
@@ -264,7 +265,7 @@ public final class CraftLegacy {
     }
 
     static {
-        System.err.println("Initializing Legacy Material Support. Unless you have legacy plugins and/or data this is a bug!");
+        LOGGER.warn("Initializing Legacy Material Support. Unless you have legacy plugins and/or data this is a bug!"); // Paper - Improve logging and errors; doesn't need to be an error
         if (MinecraftServer.getServer() != null && MinecraftServer.getServer().isDebugging()) {
             new Exception().printStackTrace();
         }