Paper/patches/server/0054-Add-exception-reporting-event.patch

From 0000000000000000000000000000000000000000 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 0000000000000000000000000000000000000000..f699ce18ca044f813e194ef2786b7ea853ea86e7
--- /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;
+    }
+}
diff --git a/src/main/java/net/minecraft/server/level/ChunkMap.java b/src/main/java/net/minecraft/server/level/ChunkMap.java
index d3213114aaaaef575efb79f0c66d5c23baf8614d..fb3b0693abb6f2f044d39508b727fb3a2ad16823 100644
--- a/src/main/java/net/minecraft/server/level/ChunkMap.java
+++ b/src/main/java/net/minecraft/server/level/ChunkMap.java
@@ -875,6 +875,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
                 return true;
             } catch (Exception exception) {
                 ChunkMap.LOGGER.error("Failed to save chunk {},{}", chunkcoordintpair.x, chunkcoordintpair.z, exception);
+                com.destroystokyo.paper.exception.ServerInternalException.reportInternalException(exception); // Paper
                 return false;
             }
         }
diff --git a/src/main/java/net/minecraft/server/players/OldUsersConverter.java b/src/main/java/net/minecraft/server/players/OldUsersConverter.java
index b0ed7d12bee6b247762fff3d5a24f0cc9411e3dc..f6cb864c45f960811acc02829d1f7883b916de29 100644
--- a/src/main/java/net/minecraft/server/players/OldUsersConverter.java
+++ b/src/main/java/net/minecraft/server/players/OldUsersConverter.java
@@ -1,5 +1,6 @@
 package net.minecraft.server.players;
 
+import com.destroystokyo.paper.exception.ServerInternalException;
 import com.google.common.collect.Lists;
 import com.google.common.collect.Maps;
 import com.google.common.io.Files;
@@ -363,6 +364,7 @@ public class OldUsersConverter {
                             root = NbtIo.readCompressed(new java.io.FileInputStream(file5));
                         } catch (Exception exception) {
                             exception.printStackTrace();
+                            ServerInternalException.reportInternalException(exception); // Paper
                         }
 
                         if (root != null) {
@@ -376,6 +378,7 @@ public class OldUsersConverter {
                                 NbtIo.writeCompressed(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/world/entity/ai/village/VillageSiege.java b/src/main/java/net/minecraft/world/entity/ai/village/VillageSiege.java
index 08c5f6fd1a307c89cf8365f56314a0c6d3e89e4b..26e0f03f2e736ed6ba86e2510a7962deee180ef3 100644
--- a/src/main/java/net/minecraft/world/entity/ai/village/VillageSiege.java
+++ b/src/main/java/net/minecraft/world/entity/ai/village/VillageSiege.java
@@ -1,5 +1,7 @@
 package net.minecraft.world.entity.ai.village;
 
+import com.destroystokyo.paper.exception.ServerInternalException;
+
 import java.util.Iterator;
 import javax.annotation.Nullable;
 import net.minecraft.core.BlockPos;
@@ -119,6 +121,7 @@ public class VillageSiege implements CustomSpawner {
                 entityzombie.finalizeSpawn(world, world.getCurrentDifficultyAt(entityzombie.blockPosition()), MobSpawnType.EVENT, (SpawnGroupData) null, (CompoundTag) null);
             } catch (Exception exception) {
                 VillageSiege.LOGGER.warn("Failed to create zombie for village siege at {}", vec3d, exception);
+                ServerInternalException.reportInternalException(exception); // Paper
                 return;
             }
 
diff --git a/src/main/java/net/minecraft/world/level/Level.java b/src/main/java/net/minecraft/world/level/Level.java
index 5f047982b559087ae6eaffbc89ea83d289609de5..dccf23a64bad4fbfcef56eace434884e35919add 100644
--- a/src/main/java/net/minecraft/world/level/Level.java
+++ b/src/main/java/net/minecraft/world/level/Level.java
@@ -1,5 +1,10 @@
 package net.minecraft.world.level;
 
+import co.aikar.timings.Timing;
+import co.aikar.timings.Timings;
+import com.destroystokyo.paper.event.server.ServerExceptionEvent;
+import com.destroystokyo.paper.exception.ServerInternalException;
+import com.google.common.base.MoreObjects;
 import com.google.common.collect.Lists;
 import com.mojang.serialization.Codec;
 import java.io.IOException;
@@ -738,6 +743,7 @@ public abstract class Level implements LevelAccessor, AutoCloseable {
             // Paper start - Prevent tile entity and entity crashes
             final String msg = String.format("Entity threw exception at %s:%s,%s,%s", entity.level.getWorld().getName(), entity.getX(), entity.getY(), entity.getZ());
             MinecraftServer.LOGGER.error(msg, throwable);
+            getCraftServer().getPluginManager().callEvent(new ServerExceptionEvent(new ServerInternalException(msg, throwable)));
             entity.discard();
             // Paper end
         }
diff --git a/src/main/java/net/minecraft/world/level/NaturalSpawner.java b/src/main/java/net/minecraft/world/level/NaturalSpawner.java
index ac815b900f58f67a2c656fc1dbf8f53ffc15b96e..0432ad7ab00c336e7c566f24c3ec92b399cb6e9d 100644
--- a/src/main/java/net/minecraft/world/level/NaturalSpawner.java
+++ b/src/main/java/net/minecraft/world/level/NaturalSpawner.java
@@ -313,6 +313,7 @@ public final class NaturalSpawner {
             }
         } catch (Exception exception) {
             NaturalSpawner.LOGGER.warn("Failed to create mob", exception);
+            com.destroystokyo.paper.exception.ServerInternalException.reportInternalException(exception); // Paper
             return null;
         }
     }
@@ -415,6 +416,7 @@ public final class NaturalSpawner {
                                     entity = biomesettingsmobs_c.type.create((Level) world.getLevel());
                                 } catch (Exception exception) {
                                     NaturalSpawner.LOGGER.warn("Failed to create mob", exception);
+                                    com.destroystokyo.paper.exception.ServerInternalException.reportInternalException(exception); // Paper
                                     continue;
                                 }
 
diff --git a/src/main/java/net/minecraft/world/level/chunk/LevelChunk.java b/src/main/java/net/minecraft/world/level/chunk/LevelChunk.java
index ea894662b41cddfc5702a7d6305978be71da79b4..aa6db78339d6b0661ac3be12c82da92742b5f519 100644
--- a/src/main/java/net/minecraft/world/level/chunk/LevelChunk.java
+++ b/src/main/java/net/minecraft/world/level/chunk/LevelChunk.java
@@ -1,6 +1,7 @@
 package net.minecraft.world.level.chunk;
 
 import com.google.common.collect.ImmutableList;
+import com.destroystokyo.paper.exception.ServerInternalException;
 import com.google.common.collect.Maps;
 import com.google.common.collect.Sets;
 import com.google.common.collect.UnmodifiableIterator;
@@ -615,10 +616,15 @@ public class LevelChunk implements ChunkAccess {
             this.removeBlockEntity(blockEntity.getBlockPos());
             // Paper end
         } else {
-            System.out.println("Attempted to place a tile entity (" + blockEntity + ") at " + blockEntity.getBlockPos().getX() + "," + blockEntity.getBlockPos().getY() + "," + blockEntity.getBlockPos().getZ()
-                + " (" + this.getBlockState(blockposition) + ") where there was no entity tile!");
-            System.out.println("Chunk coordinates: " + (this.chunkPos.x * 16) + "," + (this.chunkPos.z * 16));
-            new Exception().printStackTrace();
+            // Paper start
+            ServerInternalException e = new ServerInternalException(
+                "Attempted to place a tile entity (" + blockEntity + ") at " + blockEntity.getBlockPos().getX() + ","
+                    + blockEntity.getBlockPos().getY() + "," + blockEntity.getBlockPos().getZ()
+                    + " (" + getBlockState(blockposition) + ") where there was no entity tile!\n" +
+                    "Chunk coordinates: " + (this.chunkPos.x * 16) + "," + (this.chunkPos.z * 16));
+            e.printStackTrace();
+            ServerInternalException.reportInternalException(e);
+            // Paper end
             // CraftBukkit end
         }
     }
@@ -1250,6 +1256,7 @@ public class LevelChunk implements ChunkAccess {
                         // Paper start - Prevent tile entity and entity crashes
                         final String msg = String.format("BlockEntity threw exception at %s:%s,%s,%s", LevelChunk.this.getLevel().getWorld().getName(), this.getPos().getX(), this.getPos().getY(), this.getPos().getZ());
                         net.minecraft.server.MinecraftServer.LOGGER.error(msg, throwable);
+                        net.minecraft.world.level.chunk.LevelChunk.this.level.getCraftServer().getPluginManager().callEvent(new com.destroystokyo.paper.event.server.ServerExceptionEvent(new ServerInternalException(msg, throwable)));
                         LevelChunk.this.removeBlockEntity(this.getPos());
                         // Paper end
                         // Spigot start
diff --git a/src/main/java/net/minecraft/world/level/chunk/storage/RegionFile.java b/src/main/java/net/minecraft/world/level/chunk/storage/RegionFile.java
index 1441888430687b9de2a67f21ed426f16d5b30538..f514c29e64a9c7a66ff4edd5ba8c2a3dfbba2ad9 100644
--- a/src/main/java/net/minecraft/world/level/chunk/storage/RegionFile.java
+++ b/src/main/java/net/minecraft/world/level/chunk/storage/RegionFile.java
@@ -277,6 +277,7 @@ public class RegionFile implements AutoCloseable {
                     return true;
                 }
             } catch (IOException ioexception) {
+                com.destroystokyo.paper.exception.ServerInternalException.reportInternalException(ioexception); // Paper
                 return false;
             }
         }
@@ -358,6 +359,7 @@ public class RegionFile implements AutoCloseable {
             ((java.nio.Buffer) bytebuffer).position(5); // CraftBukkit - decompile error
             filechannel.write(bytebuffer);
         } catch (Throwable throwable) {
+            com.destroystokyo.paper.exception.ServerInternalException.reportInternalException(throwable); // Paper
             if (filechannel != null) {
                 try {
                     filechannel.close();
diff --git a/src/main/java/net/minecraft/world/level/storage/DimensionDataStorage.java b/src/main/java/net/minecraft/world/level/storage/DimensionDataStorage.java
index 2fdb313e8eaed868c36f68c9b7f6a6f9f4864575..c8ed0673ff819cb88d0ee6f53f2a2b9b46b203d4 100644
--- a/src/main/java/net/minecraft/world/level/storage/DimensionDataStorage.java
+++ b/src/main/java/net/minecraft/world/level/storage/DimensionDataStorage.java
@@ -120,6 +120,7 @@ public class DimensionDataStorage {
 
             pushbackInputStream.close();
         } catch (Throwable var15) {
+            com.destroystokyo.paper.exception.ServerInternalException.reportInternalException(var15); // Paper
             try {
                 fileInputStream.close();
             } catch (Throwable var10) {
diff --git a/src/main/java/org/bukkit/craftbukkit/scheduler/CraftScheduler.java b/src/main/java/org/bukkit/craftbukkit/scheduler/CraftScheduler.java
index 07c4d9cd5081378e1b903518f7174fca959cd9e3..dfc2789009fcaa08baa8054bdac915590b8701d6 100644
--- a/src/main/java/org/bukkit/craftbukkit/scheduler/CraftScheduler.java
+++ b/src/main/java/org/bukkit/craftbukkit/scheduler/CraftScheduler.java
@@ -17,6 +17,9 @@ import java.util.concurrent.atomic.AtomicReference;
 import java.util.function.Consumer;
 import java.util.function.IntUnaryOperator;
 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;
@@ -434,6 +437,8 @@ public class CraftScheduler implements BukkitScheduler {
                             msg,
                             throwable);
                     }
+                    org.bukkit.Bukkit.getServer().getPluginManager().callEvent(
+                        new ServerExceptionEvent(new ServerSchedulerException(msg, throwable, task)));
                     // Paper end
                 } finally {
                     this.currentTask = null;
@@ -441,7 +446,7 @@ public class CraftScheduler implements BukkitScheduler {
                 this.parsePending();
             } else {
                 this.debugTail = this.debugTail.setNext(new CraftAsyncDebugger(currentTick + CraftScheduler.RECENT_TICKS, task.getOwner(), task.getTaskClass()));
-                this.executor.execute(task);
+                this.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)
             }