Paper/patches/server-remapped/0057-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 d1bc927c8b429f43de2cdad98f8b329ff4c8b4db..0597c0c3e881dd43cf91bd3088ed30dfecfe8098 100644
--- a/src/main/java/net/minecraft/server/level/ChunkMap.java
+++ b/src/main/java/net/minecraft/server/level/ChunkMap.java
@@ -813,6 +813,7 @@ 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 c167d2fd99a7a352e69e2930551678bd9c9def83..09c5fa2dbcbed05da51ef2d63e6d6112d22d7877 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;
@@ -360,6 +361,7 @@ public class OldUsersConverter {
                             root = NbtIo.readCompressed(new java.io.FileInputStream(file5));
                         } catch (Exception exception) {
                             exception.printStackTrace();
+                            ServerInternalException.reportInternalException(exception); // Paper
                         }
 
                         if (root != null) {
@@ -373,6 +375,7 @@ 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 78cea15142f9fd7988f5df397061b90625070eef..f50774f022c78813982bfe08f764b54bde779e04 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 7b4475807cca0e92ea9ae6ea49a82a8634cc0ff5..94e268a05b4601c29b6d2845f0fc2311643a161f 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;
@@ -737,8 +742,11 @@ public abstract class Level implements LevelAccessor, AutoCloseable {
                         gameprofilerfiller.pop();
                     } catch (Throwable throwable) {
                         // Paper start - Prevent tile entity and entity crashes
-                        System.err.println("TileEntity threw exception at " + tileentity.level.getWorld().getName() + ":" + tileentity.worldPosition.getX() + "," + tileentity.worldPosition.getY() + "," + tileentity.worldPosition.getZ());
+                        String msg = "TileEntity threw exception at " + tileentity.getLevel().getWorld().getName() + ":" + tileentity.getBlockPos().getX() + "," + tileentity.getBlockPos().getY() + "," + tileentity.getBlockPos().getZ();
+                        System.err.println(msg);
                         throwable.printStackTrace();
+                        getCraftServer().getPluginManager().callEvent(new ServerExceptionEvent(new ServerInternalException(msg, throwable)));
+                        // Paper end
                         tilesThisCycle--;
                         this.tickableBlockEntities.remove(tileTickPosition--);
                         continue;
@@ -808,8 +816,10 @@ public abstract class Level implements LevelAccessor, AutoCloseable {
             tickConsumer.accept(entity);
         } catch (Throwable throwable) {
             // Paper start - Prevent tile entity and entity crashes
-            System.err.println("Entity threw exception at " + entity.level.getWorld().getName() + ":" + entity.getX() + "," + entity.getY() + "," + entity.getZ());
+            String msg = "Entity threw exception at " + entity.level.getWorld().getName() + ":" + entity.getX() + "," + entity.getY() + "," + entity.getZ();
+            System.err.println(msg);
             throwable.printStackTrace();
+            getCraftServer().getPluginManager().callEvent(new ServerExceptionEvent(new ServerInternalException(msg, throwable)));
             entity.removed = true;
             return;
             // 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 fc134b916e95231af8478a4f97bf11a0f37f7f0b..a19ac1cb7e4d8d478648a048b2bfa0daf85a80c9 100644
--- a/src/main/java/net/minecraft/world/level/NaturalSpawner.java
+++ b/src/main/java/net/minecraft/world/level/NaturalSpawner.java
@@ -299,6 +299,7 @@ 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;
         }
     }
@@ -405,6 +406,7 @@ public final class NaturalSpawner {
                                 entity = biomesettingsmobs_c.type.create((Level) worldaccess.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 300749822d52f9f973e71c6ec9c8bf29d6a6938e..9ca05aa06696883adc8b67a68ca6d2d850e95d25 100644
--- a/src/main/java/net/minecraft/world/level/chunk/LevelChunk.java
+++ b/src/main/java/net/minecraft/world/level/chunk/LevelChunk.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;
@@ -654,10 +655,15 @@ public class LevelChunk implements ChunkAccess {
             this.blockEntities.remove(pos);
             // Paper end
         } else {
-            System.out.println("Attempted to place a tile entity (" + blockEntity + ") at " + blockEntity.getBlockPos().getX() + "," + blockEntity.getBlockPos().getY() + "," + blockEntity.getBlockPos().getZ()
-                + " (" + getBlockState(pos) + ") 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(pos) + ") 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
         }
     }
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 60f410a4f838048bbfd2cde52caa7c4c9434b0ba..1598da3449ee1c559cf503e1b20a0daaf6a033dd 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/DimensionDataStorage.java b/src/main/java/net/minecraft/world/level/storage/DimensionDataStorage.java
index 60b7fdf9c092e8105d41f4af02a08651624f3eb9..99cfd693ea705d45a5eab181cb80c354a2d1159f 100644
--- a/src/main/java/net/minecraft/world/level/storage/DimensionDataStorage.java
+++ b/src/main/java/net/minecraft/world/level/storage/DimensionDataStorage.java
@@ -150,6 +150,7 @@ public class DimensionDataStorage {
             }
         } 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)
             }