Paper/Spigot-Server-Patches/0055-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/PlayerChunkMap.java b/src/main/java/net/minecraft/server/level/PlayerChunkMap.java
index 788a45d5426f0752509442aec2d28b1f32f63cb1..2511fbe7aa5ff1ace71b513d2938975e388295c6 100644
--- a/src/main/java/net/minecraft/server/level/PlayerChunkMap.java
+++ b/src/main/java/net/minecraft/server/level/PlayerChunkMap.java
@@ -815,6 +815,7 @@ public class PlayerChunkMap extends IChunkLoader implements PlayerChunk.d {
                 return true;
             } catch (Exception exception) {
                 PlayerChunkMap.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/NameReferencingFileConverter.java b/src/main/java/net/minecraft/server/players/NameReferencingFileConverter.java
index 107979178e8be5ee6cf885d42f992fabf3bd00b0..8a343a857dc4661ba256e39cf391dd2c7a1cc970 100644
--- a/src/main/java/net/minecraft/server/players/NameReferencingFileConverter.java
+++ b/src/main/java/net/minecraft/server/players/NameReferencingFileConverter.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 NameReferencingFileConverter {
                             root = NBTCompressedStreamTools.a(new java.io.FileInputStream(file5));
                         } catch (Exception exception) {
                             exception.printStackTrace();
+                            ServerInternalException.reportInternalException(exception); // Paper
                         }
 
                         if (root != null) {
@@ -376,6 +378,7 @@ 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/world/entity/ai/village/VillageSiege.java b/src/main/java/net/minecraft/world/entity/ai/village/VillageSiege.java
index 928ca3189af1ddaba797628a087cd6c6a9016f5c..eaa97eb11d893266253fb108249ced1e0e96a4dc 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.BaseBlockPosition;
@@ -119,6 +121,7 @@ public class VillageSiege implements MobSpawner {
                 entityzombie.prepare(worldserver, worldserver.getDamageScaler(entityzombie.getChunkCoordinates()), EnumMobSpawn.EVENT, (GroupDataEntity) null, (NBTTagCompound) 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/SpawnerCreature.java b/src/main/java/net/minecraft/world/level/SpawnerCreature.java
index 2d02b2fc502a0f7e541f7943ed647ff7177acee8..fd0595fd584046326eccacdf0a6afe40c5e84eed 100644
--- a/src/main/java/net/minecraft/world/level/SpawnerCreature.java
+++ b/src/main/java/net/minecraft/world/level/SpawnerCreature.java
@@ -301,6 +301,7 @@ public final class SpawnerCreature {
             }
         } catch (Exception exception) {
             SpawnerCreature.LOGGER.warn("Failed to create mob", exception);
+            com.destroystokyo.paper.exception.ServerInternalException.reportInternalException(exception); // Paper
             return null;
         }
     }
@@ -407,6 +408,7 @@ public final class SpawnerCreature {
                                 entity = biomesettingsmobs_c.c.a((World) worldaccess.getMinecraftWorld());
                             } catch (Exception exception) {
                                 SpawnerCreature.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/World.java b/src/main/java/net/minecraft/world/level/World.java
index 33469b719d679c65d4bcb8366008e6e107eb3a0b..01cb0c8dd9875986e0c08371e876f0dba3f0cf5a 100644
--- a/src/main/java/net/minecraft/world/level/World.java
+++ b/src/main/java/net/minecraft/world/level/World.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;
@@ -737,8 +742,11 @@ public abstract class World implements GeneratorAccess, AutoCloseable {
                         gameprofilerfiller.exit();
                     } catch (Throwable throwable) {
                         // 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.getWorld().getWorld().getName() + ":" + tileentity.getPosition().getX() + "," + tileentity.getPosition().getY() + "," + tileentity.getPosition().getZ();
+                        System.err.println(msg);
                         throwable.printStackTrace();
+                        getServer().getPluginManager().callEvent(new ServerExceptionEvent(new ServerInternalException(msg, throwable)));
+                        // Paper end
                         tilesThisCycle--;
                         this.tileEntityListTick.remove(tileTickPosition--);
                         continue;
@@ -808,8 +816,10 @@ public abstract class World implements GeneratorAccess, AutoCloseable {
             consumer.accept(entity);
         } catch (Throwable throwable) {
             // 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);
             throwable.printStackTrace();
+            getServer().getPluginManager().callEvent(new ServerExceptionEvent(new ServerInternalException(msg, throwable)));
             entity.dead = true;
             return;
             // Paper end
diff --git a/src/main/java/net/minecraft/world/level/chunk/Chunk.java b/src/main/java/net/minecraft/world/level/chunk/Chunk.java
index a2d80c2c8e4f080f60746548f75631c5946ba8e2..4b3de29b1a6e9d75b28962073c62bbe8d666165f 100644
--- a/src/main/java/net/minecraft/world/level/chunk/Chunk.java
+++ b/src/main/java/net/minecraft/world/level/chunk/Chunk.java
@@ -1,5 +1,6 @@
 package net.minecraft.world.level.chunk;
 
+import com.destroystokyo.paper.exception.ServerInternalException;
 import com.google.common.collect.Maps;
 import com.google.common.collect.Sets;
 import it.unimi.dsi.fastutil.longs.LongOpenHashSet;
@@ -655,10 +656,15 @@ public class Chunk implements IChunkAccess {
             this.tileEntities.remove(blockposition);
             // Paper end
         } else {
-            System.out.println("Attempted to place a tile entity (" + tileentity + ") at " + tileentity.getPosition().getX() + "," + tileentity.getPosition().getY() + "," + tileentity.getPosition().getZ()
-                + " (" + getType(blockposition) + ") where there was no entity tile!");
-            System.out.println("Chunk coordinates: " + (this.loc.x * 16) + "," + (this.loc.z * 16));
-            new Exception().printStackTrace();
+            // Paper start
+            ServerInternalException e = new ServerInternalException(
+                    "Attempted to place a tile entity (" + tileentity + ") at " + tileentity.getPosition().getX() + ","
+                            + tileentity.getPosition().getY() + "," + tileentity.getPosition().getZ()
+                            + " (" + getType(blockposition) + ") where there was no entity tile!\n" +
+                            "Chunk coordinates: " + (this.loc.x * 16) + "," + (this.loc.z * 16));
+            e.printStackTrace();
+            ServerInternalException.reportInternalException(e);
+            // Paper end
             // CraftBukkit end
         }
     }
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 d1b761055c508a4b80436b50a832e00d0449d8cb..1638f7902290e1bb233f11e5d0bbf83a9e863939 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
@@ -265,6 +265,7 @@ public class RegionFile implements AutoCloseable {
                     return true;
                 }
             } catch (IOException ioexception) {
+                com.destroystokyo.paper.exception.ServerInternalException.reportInternalException(ioexception); // Paper
                 return false;
             }
         }
@@ -337,6 +338,7 @@ public class RegionFile implements AutoCloseable {
             filechannel.write(bytebuffer);
         } catch (Throwable throwable1) {
             throwable = throwable1;
+            com.destroystokyo.paper.exception.ServerInternalException.reportInternalException(throwable); // Paper
             throw throwable1;
         } finally {
             if (filechannel != null) {
diff --git a/src/main/java/net/minecraft/world/level/storage/WorldPersistentData.java b/src/main/java/net/minecraft/world/level/storage/WorldPersistentData.java
index 3910daeaa177639fa8055301304634c2014dc20f..d61960d80599dc5e7b70cc990e4b0b174eb6e34e 100644
--- a/src/main/java/net/minecraft/world/level/storage/WorldPersistentData.java
+++ b/src/main/java/net/minecraft/world/level/storage/WorldPersistentData.java
@@ -150,6 +150,7 @@ public class WorldPersistentData {
             }
         } catch (Throwable throwable6) {
             throwable = throwable6;
+            com.destroystokyo.paper.exception.ServerInternalException.reportInternalException(throwable); // Paper
             throw throwable6;
         } finally {
             if (fileinputstream != null) {
diff --git a/src/main/java/org/bukkit/craftbukkit/scheduler/CraftScheduler.java b/src/main/java/org/bukkit/craftbukkit/scheduler/CraftScheduler.java
index ffe9cc1011226d604dc5499e7692e9a9a5132b72..9b6d9373abb59a30c2835ca891282d07559281f5 100644
--- a/src/main/java/org/bukkit/craftbukkit/scheduler/CraftScheduler.java
+++ b/src/main/java/org/bukkit/craftbukkit/scheduler/CraftScheduler.java
@@ -16,6 +16,9 @@ import java.util.concurrent.atomic.AtomicInteger;
 import java.util.concurrent.atomic.AtomicReference;
 import java.util.function.Consumer;
 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;
@@ -419,6 +422,8 @@ public class CraftScheduler implements BukkitScheduler {
                             msg,
                             throwable);
                     }
+                    org.bukkit.Bukkit.getServer().getPluginManager().callEvent(
+                        new ServerExceptionEvent(new ServerSchedulerException(msg, throwable, task)));
                     // Paper end
                 } finally {
                     currentTask = null;
@@ -426,7 +431,7 @@ public class CraftScheduler implements BukkitScheduler {
                 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)
             }