Paper/patches/server/0059-Add-exception-reporting-event.patch
Spottedleaf 01a13871de
Rewrite chunk system (#8177)
Patch documentation to come

Issues with the old system that are fixed now:
- World generation does not scale with cpu cores effectively.
- Relies on the main thread for scheduling and maintaining chunk state, dropping chunk load/generate rates at lower tps.
- Unreliable prioritisation of chunk gen/load calls that block the main thread.
- Shutdown logic is utterly unreliable, as it has to wait for all chunks to unload - is it guaranteed that the chunk system is in a state on shutdown that it can reliably do this? Watchdog shutdown also typically failed due to thread checks, which is now resolved.
- Saving of data is not unified (i.e can save chunk data without saving entity data, poses problems for desync if shutdown is really abnormal.
- Entities are not loaded with chunks. This caused quite a bit of headache for Chunk#getEntities API, but now the new chunk system loads entities with chunks so that they are ready whenever the chunk loads in. Effectively brings the behavior back to 1.16 era, but still storing entities in their own separate regionfiles.

The above list is not complete. The patch documentation will complete it.

New chunk system hard relies on starlight and dataconverter, and most importantly the new concurrent utilities in ConcurrentUtil.

Some of the old async chunk i/o interface (i.e the old file io thread reroutes _some_ calls to the new file io thread) is kept for plugin compat reasons. It will be removed in the next major version of minecraft.

The old legacy chunk system patches have been moved to the removed folder in case we need them again.
2022-09-26 01:02:51 -07:00

238 lines
14 KiB
Diff

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/players/OldUsersConverter.java b/src/main/java/net/minecraft/server/players/OldUsersConverter.java
index 439ff01be1521c283d60cacb110fcb4993933057..da98f074ccd5a40c635824112c97fd174c393cb1 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 c6fb4c33d7ea52b88d8fc0d90748cbab7387c565..fed09b886f4fa0006d160e5f2abb00dfee45434d 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
@@ -118,6 +118,7 @@ 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);
+ com.destroystokyo.paper.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 1473664f94f228abd81b8c654d105b8a76cc49e9..65fd3a3c1f0a55d034e6f91c4f222e6454e7166c 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;
@@ -705,6 +710,7 @@ 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 b37e04a0c466dacf52e74a4d4fb0885511c2abc1..878fc7f57178bff0e42fd01434f0aaa2732f5a5b 100644
--- a/src/main/java/net/minecraft/world/level/NaturalSpawner.java
+++ b/src/main/java/net/minecraft/world/level/NaturalSpawner.java
@@ -289,6 +289,7 @@ 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;
}
}
@@ -401,6 +402,7 @@ public final class NaturalSpawner {
entity = biomesettingsmobs_c.type.create(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 a4594b6b28eab545694491bc547f05a971a6ffad..20c9eada6f051ecdd5e45e625d7e6289d406a2f8 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.UnmodifiableIterator;
import com.mojang.logging.LogUtils;
@@ -605,10 +606,16 @@ public class LevelChunk extends ChunkAccess {
// CraftBukkit start
} 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) +
+ "\nWorld: " + level.getLevel().dimension().location());
+ e.printStackTrace();
+ ServerInternalException.reportInternalException(e);
+ // Paper end
// CraftBukkit end
}
}
@@ -1169,6 +1176,7 @@ public class LevelChunk extends 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 7412da51c2eae70f17f4883f7223303d570c8402..8adebb8408cc22ae7e9e89721645e5dd27a41cd8 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
@@ -275,6 +275,7 @@ public class RegionFile implements AutoCloseable {
return true;
}
} catch (IOException ioexception) {
+ com.destroystokyo.paper.exception.ServerInternalException.reportInternalException(ioexception); // Paper
return false;
}
}
@@ -356,6 +357,7 @@ 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 5272a718178b5a2cb1df263ce0c5500c92c9ebda..0465b397b628b11a6fc52e3375945c94d68cfdd5 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)
}