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path: root/Spigot-Server-Patches/0067-Add-exception-reporting-event.patch
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From 236c046bc5e75574bc47475a4969553a0830b522 Mon Sep 17 00:00:00 2001
From: Joseph Hirschfeld <joe@ibj.io>
Date: Thu, 3 Mar 2016 03:15:41 -0600
Subject: [PATCH] Add exception reporting event


diff --git a/src/main/java/com/destroystokyo/paper/ServerSchedulerReportingWrapper.java b/src/main/java/com/destroystokyo/paper/ServerSchedulerReportingWrapper.java
new file mode 100644
index 0000000..9339718
--- /dev/null
+++ b/src/main/java/com/destroystokyo/paper/ServerSchedulerReportingWrapper.java
@@ -0,0 +1,38 @@
+package com.destroystokyo.paper;
+
+import com.google.common.base.Preconditions;
+import org.bukkit.craftbukkit.scheduler.CraftTask;
+import com.destroystokyo.paper.event.server.ServerExceptionEvent;
+import com.destroystokyo.paper.exception.ServerSchedulerException;
+
+/**
+ * Reporting wrapper to catch exceptions not natively
+ */
+public class ServerSchedulerReportingWrapper implements Runnable {
+
+    private final CraftTask internalTask;
+
+    public ServerSchedulerReportingWrapper(CraftTask internalTask) {
+        this.internalTask = Preconditions.checkNotNull(internalTask, "internalTask");
+    }
+
+    @Override
+    public void run() {
+        try {
+            internalTask.run();
+        } catch (RuntimeException e) {
+            internalTask.getOwner().getServer().getPluginManager().callEvent(
+                    new ServerExceptionEvent(new ServerSchedulerException(e, internalTask))
+            );
+            throw e;
+        } catch (Throwable t) {
+            internalTask.getOwner().getServer().getPluginManager().callEvent(
+                    new ServerExceptionEvent(new ServerSchedulerException(t, internalTask))
+            ); //Do not rethrow, since it is not permitted with Runnable#run
+        }
+    }
+
+    public CraftTask getInternalTask() {
+        return internalTask;
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/net/minecraft/server/Chunk.java b/src/main/java/net/minecraft/server/Chunk.java
index 989d510..9118e4d 100644
--- a/src/main/java/net/minecraft/server/Chunk.java
+++ b/src/main/java/net/minecraft/server/Chunk.java
@@ -1,5 +1,6 @@
 package net.minecraft.server;
 
+import com.destroystokyo.paper.exception.ServerInternalException;
 import com.google.common.base.Predicate;
 import com.google.common.collect.Maps;
 import com.google.common.collect.Queues;
@@ -16,6 +17,7 @@ import org.apache.logging.log4j.Logger;
 
 import com.google.common.collect.Lists; // CraftBukkit
 import org.bukkit.Server; // CraftBukkit
+import org.bukkit.craftbukkit.util.CraftMagicNumbers; // Paper
 
 public class Chunk {
 
@@ -757,10 +759,15 @@ public class Chunk {
             this.tileEntities.remove(blockposition);
             // Paper end
         } else {
-            System.out.println("Attempted to place a tile entity (" + tileentity + ") at " + tileentity.position.getX() + "," + tileentity.position.getY() + "," + tileentity.position.getZ()
-                + " (" + org.bukkit.craftbukkit.util.CraftMagicNumbers.getMaterial(getBlockData(blockposition).getBlock()) + ") where there was no entity tile!");
-            System.out.println("Chunk coordinates: " + (this.locX * 16) + "," + (this.locZ * 16));
-            new Exception().printStackTrace();
+            // Paper start
+            ServerInternalException e = new ServerInternalException(
+                    "Attempted to place a tile entity (" + tileentity + ") at " + tileentity.position.getX() + ","
+                            + tileentity.position.getY() + "," + tileentity.position.getZ()
+                            + " (" + CraftMagicNumbers.getMaterial(getBlockData(blockposition).getBlock()) + ") where there was no entity tile!\n" +
+                            "Chunk coordinates: " + (this.locX * 16) + "," + (this.locZ * 16));
+            e.printStackTrace();
+            ServerInternalException.reportInternalException(e);
+            // Paper end
             // CraftBukkit end
         }
     }
diff --git a/src/main/java/net/minecraft/server/ChunkProviderServer.java b/src/main/java/net/minecraft/server/ChunkProviderServer.java
index 5eeefe8..299cc91 100644
--- a/src/main/java/net/minecraft/server/ChunkProviderServer.java
+++ b/src/main/java/net/minecraft/server/ChunkProviderServer.java
@@ -11,6 +11,7 @@ import java.util.Iterator;
 import java.util.List;
 import java.util.Set;
 import javax.annotation.Nullable;
+import com.destroystokyo.paper.exception.ServerInternalException;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 
@@ -188,7 +189,11 @@ public class ChunkProviderServer implements IChunkProvider {
 
             return chunk;
         } catch (Exception exception) {
-            ChunkProviderServer.a.error("Couldn\'t load chunk", exception);
+            // Paper start
+            String msg = "Couldn\'t load chunk";
+            ChunkProviderServer.a.error(msg, exception);
+            ServerInternalException.reportInternalException(exception);
+            // Paper end
             return null;
         }
     }
@@ -197,7 +202,11 @@ public class ChunkProviderServer implements IChunkProvider {
         try {
             this.chunkLoader.b(this.world, chunk);
         } catch (Exception exception) {
-            ChunkProviderServer.a.error("Couldn\'t save entities", exception);
+            // Paper start
+            String msg = "Couldn\'t save entities";
+            ChunkProviderServer.a.error(msg, exception);
+            ServerInternalException.reportInternalException(exception);
+            // Paper end
         }
 
     }
@@ -207,9 +216,14 @@ public class ChunkProviderServer implements IChunkProvider {
             chunk.setLastSaved(this.world.getTime());
             this.chunkLoader.a(this.world, chunk);
         } catch (IOException ioexception) {
-            ChunkProviderServer.a.error("Couldn\'t save chunk", ioexception);
+            // Paper start
+            String msg = "Couldn\'t save chunk";
+            ChunkProviderServer.a.error(msg, ioexception);
+            ServerInternalException.reportInternalException(ioexception);
         } catch (ExceptionWorldConflict exceptionworldconflict) {
-            ChunkProviderServer.a.error("Couldn\'t save chunk; already in use by another instance of Minecraft?", exceptionworldconflict);
+            String msg = "Couldn\'t save chunk; already in use by another instance of Minecraft?";
+            ChunkProviderServer.a.error(msg, exceptionworldconflict);
+            ServerInternalException.reportInternalException(exceptionworldconflict);
         }
 
     }
diff --git a/src/main/java/net/minecraft/server/NameReferencingFileConverter.java b/src/main/java/net/minecraft/server/NameReferencingFileConverter.java
index d1c83d1..e21a8c4 100644
--- a/src/main/java/net/minecraft/server/NameReferencingFileConverter.java
+++ b/src/main/java/net/minecraft/server/NameReferencingFileConverter.java
@@ -1,5 +1,6 @@
 package net.minecraft.server;
 
+import com.destroystokyo.paper.exception.ServerInternalException;
 import com.google.common.base.Charsets;
 import com.google.common.base.Predicate;
 import com.google.common.collect.Iterators;
@@ -361,6 +362,7 @@ public class NameReferencingFileConverter {
                             root = NBTCompressedStreamTools.a(new java.io.FileInputStream(file1));
                         } catch (Exception exception) {
                             exception.printStackTrace();
+                            ServerInternalException.reportInternalException(exception); // Paper
                         }
 
                         if (root != null) {
@@ -374,6 +376,7 @@ public class NameReferencingFileConverter {
                                 NBTCompressedStreamTools.a(root, new java.io.FileOutputStream(file2));
                             } catch (Exception exception) {
                                 exception.printStackTrace();
+                                ServerInternalException.reportInternalException(exception); // Paper
                             }
                        }
                         // CraftBukkit end
diff --git a/src/main/java/net/minecraft/server/PersistentCollection.java b/src/main/java/net/minecraft/server/PersistentCollection.java
index 936d6c6..50056f4 100644
--- a/src/main/java/net/minecraft/server/PersistentCollection.java
+++ b/src/main/java/net/minecraft/server/PersistentCollection.java
@@ -1,5 +1,6 @@
 package net.minecraft.server;
 
+import com.destroystokyo.paper.exception.ServerInternalException;
 import com.google.common.collect.Lists;
 import com.google.common.collect.Maps;
 import java.io.DataInputStream;
@@ -53,6 +54,7 @@ public class PersistentCollection {
                     }
                 } catch (Exception exception1) {
                     exception1.printStackTrace();
+                    ServerInternalException.reportInternalException(exception1); // Paper
                 }
             }
 
@@ -102,6 +104,7 @@ public class PersistentCollection {
                 }
             } catch (Exception exception) {
                 exception.printStackTrace();
+                ServerInternalException.reportInternalException(exception); // Paper
             }
 
         }
diff --git a/src/main/java/net/minecraft/server/RegionFile.java b/src/main/java/net/minecraft/server/RegionFile.java
index 19fea50..c9bd856 100644
--- a/src/main/java/net/minecraft/server/RegionFile.java
+++ b/src/main/java/net/minecraft/server/RegionFile.java
@@ -1,5 +1,6 @@
 package net.minecraft.server;
 
+import com.destroystokyo.paper.exception.ServerInternalException;
 import com.google.common.collect.Lists;
 import java.io.BufferedInputStream;
 import java.io.BufferedOutputStream;
@@ -81,6 +82,7 @@ public class RegionFile {
             }
         } catch (IOException ioexception) {
             ioexception.printStackTrace();
+            ServerInternalException.reportInternalException(ioexception); // Paper
         }
 
     }
@@ -245,6 +247,7 @@ public class RegionFile {
             this.b(i, j, (int) (MinecraftServer.av() / 1000L));
         } catch (IOException ioexception) {
             ioexception.printStackTrace();
+            ServerInternalException.reportInternalException(ioexception); // Paper
         }
 
     }
diff --git a/src/main/java/net/minecraft/server/RegionFileCache.java b/src/main/java/net/minecraft/server/RegionFileCache.java
index 49fa5e4..2121e84 100644
--- a/src/main/java/net/minecraft/server/RegionFileCache.java
+++ b/src/main/java/net/minecraft/server/RegionFileCache.java
@@ -1,5 +1,6 @@
 package net.minecraft.server;
 
+import com.destroystokyo.paper.exception.ServerInternalException;
 import com.google.common.collect.Maps;
 import java.io.DataInputStream;
 import java.io.DataOutputStream;
@@ -54,6 +55,7 @@ public class RegionFileCache {
                 }
             } catch (IOException ioexception) {
                 ioexception.printStackTrace();
+                ServerInternalException.reportInternalException(ioexception); // Paper
             }
         }
 
diff --git a/src/main/java/net/minecraft/server/SpawnerCreature.java b/src/main/java/net/minecraft/server/SpawnerCreature.java
index fb0830d..b3edaee 100644
--- a/src/main/java/net/minecraft/server/SpawnerCreature.java
+++ b/src/main/java/net/minecraft/server/SpawnerCreature.java
@@ -7,6 +7,7 @@ import java.util.Random;
 import java.util.Set;
 
 // CraftBukkit start
+import com.destroystokyo.paper.exception.ServerInternalException;
 import org.bukkit.craftbukkit.util.LongHash;
 import org.bukkit.craftbukkit.util.LongHashSet;
 import org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason;
@@ -179,6 +180,7 @@ public final class SpawnerCreature {
                                                             entityinsentient = (EntityInsentient) biomebase_biomemeta.b.getConstructor(new Class[] { World.class}).newInstance(new Object[] { worldserver});
                                                         } catch (Exception exception) {
                                                             exception.printStackTrace();
+                                                            ServerInternalException.reportInternalException(exception); // Paper
                                                             return j1;
                                                         }
 
@@ -286,6 +288,7 @@ public final class SpawnerCreature {
                                 entityinsentient = (EntityInsentient) biomebase_biomemeta.b.getConstructor(new Class[] { World.class}).newInstance(new Object[] { world});
                             } catch (Exception exception) {
                                 exception.printStackTrace();
+                                ServerInternalException.reportInternalException(exception); // Paper
                                 continue;
                             }
 
diff --git a/src/main/java/net/minecraft/server/VillageSiege.java b/src/main/java/net/minecraft/server/VillageSiege.java
index e40fd93..d1458aa 100644
--- a/src/main/java/net/minecraft/server/VillageSiege.java
+++ b/src/main/java/net/minecraft/server/VillageSiege.java
@@ -1,5 +1,7 @@
 package net.minecraft.server;
 
+import com.destroystokyo.paper.exception.ServerInternalException;
+
 import java.util.Iterator;
 import java.util.List;
 import javax.annotation.Nullable;
@@ -137,6 +139,7 @@ public class VillageSiege {
                 entityzombie.setVillagerType(EnumZombieType.NORMAL);
             } catch (Exception exception) {
                 exception.printStackTrace();
+                ServerInternalException.reportInternalException(exception); // Paper
                 return false;
             }
 
diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
index a905ff9..48c0e14 100644
--- a/src/main/java/net/minecraft/server/World.java
+++ b/src/main/java/net/minecraft/server/World.java
@@ -1,5 +1,7 @@
 	package net.minecraft.server;
 
+import com.destroystokyo.paper.event.server.ServerExceptionEvent;
+import com.destroystokyo.paper.exception.ServerInternalException;
 import com.google.common.base.Function;
 import com.google.common.base.Objects;
 import com.google.common.base.Predicate;
@@ -1453,8 +1455,10 @@ public abstract class World implements IBlockAccess {
                 } catch (Throwable throwable1) {
                     entity.tickTimer.stopTiming();
                     // Paper start - Prevent tile entity and entity crashes
-                    System.err.println("Entity threw exception at " + entity.world.getWorld().getName() + ":" + entity.locX + "," + entity.locY + "," + entity.locZ);
+                    String msg = "Entity threw exception at " + entity.world.getWorld().getName() + ":" + entity.locX + "," + entity.locY + "," + entity.locZ;
+                    System.err.println(msg);
                     throwable1.printStackTrace();
+                    getServer().getPluginManager().callEvent(new ServerExceptionEvent(new ServerInternalException(msg, throwable1)));
                     entity.dead = true;
                     continue;
                     // Paper end
@@ -1519,8 +1523,10 @@ public abstract class World implements IBlockAccess {
                         this.methodProfiler.b();
                     } catch (Throwable throwable2) {
                         // Paper start - Prevent tile entity and entity crashes
-                        System.err.println("TileEntity threw exception at " + tileentity.world.getWorld().getName() + ":" + tileentity.position.getX() + "," + tileentity.position.getY() + "," + tileentity.position.getZ());
+                        String msg = "TileEntity threw exception at " + tileentity.world.getWorld().getName() + ":" + tileentity.position.getX() + "," + tileentity.position.getY() + "," + tileentity.position.getZ();
+                        System.err.println(msg);
                         throwable2.printStackTrace();
+                        getServer().getPluginManager().callEvent(new ServerExceptionEvent(new ServerInternalException(msg, throwable2)));
                         tilesThisCycle--;
                         this.tileEntityListTick.remove(tileTickPosition--);
                         continue;
diff --git a/src/main/java/org/bukkit/craftbukkit/scheduler/CraftScheduler.java b/src/main/java/org/bukkit/craftbukkit/scheduler/CraftScheduler.java
index 198c37c..cdb836a 100644
--- a/src/main/java/org/bukkit/craftbukkit/scheduler/CraftScheduler.java
+++ b/src/main/java/org/bukkit/craftbukkit/scheduler/CraftScheduler.java
@@ -14,6 +14,9 @@ import java.util.concurrent.atomic.AtomicInteger;
 import java.util.concurrent.atomic.AtomicReference;
 import java.util.logging.Level;
 
+import com.destroystokyo.paper.ServerSchedulerReportingWrapper;
+import com.destroystokyo.paper.event.server.ServerExceptionEvent;
+import com.destroystokyo.paper.exception.ServerSchedulerException;
 import org.apache.commons.lang.Validate;
 import org.bukkit.plugin.IllegalPluginAccessException;
 import org.bukkit.plugin.Plugin;
@@ -351,18 +354,24 @@ public class CraftScheduler implements BukkitScheduler {
                 try {
                     task.run();
                 } catch (final Throwable throwable) {
+                    // Paper start
+                    String msg = String.format(
+                            "Task #%s for %s generated an exception",
+                            task.getTaskId(),
+                            task.getOwner().getDescription().getFullName());
                     task.getOwner().getLogger().log(
                             Level.WARNING,
-                            String.format(
-                                "Task #%s for %s generated an exception",
-                                task.getTaskId(),
-                                task.getOwner().getDescription().getFullName()),
+                            msg,
                             throwable);
+                    task.getOwner().getServer().getPluginManager().callEvent(
+                            new ServerExceptionEvent(new ServerSchedulerException(msg, throwable, task))
+                    );
+                    // Paper end
                 }
                 parsePending();
             } else {
                 debugTail = debugTail.setNext(new CraftAsyncDebugger(currentTick + RECENT_TICKS, task.getOwner(), task.getTaskClass()));
-                executor.execute(task);
+                executor.execute(new ServerSchedulerReportingWrapper(task)); // Paper
                 // We don't need to parse pending
                 // (async tasks must live with race-conditions if they attempt to cancel between these few lines of code)
             }
-- 
2.10.0.windows.1