PaperMC/patches/server/0144-Profile-Lookup-Events.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

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Sat, 17 Jun 2017 17:00:32 -0400
Subject: [PATCH] Profile Lookup Events
Adds a Pre Lookup Event and a Post Lookup Event so that plugins may prefill in profile data, and cache the responses from
profiles that had to be looked up.
diff --git a/src/main/java/com/destroystokyo/paper/profile/PaperGameProfileRepository.java b/src/main/java/com/destroystokyo/paper/profile/PaperGameProfileRepository.java
index 582c169c85ac66f1f9430f79042e4655f776c157..08fdb681a68e8be6e4062af0630957ce3e524806 100644
--- a/src/main/java/com/destroystokyo/paper/profile/PaperGameProfileRepository.java
+++ b/src/main/java/com/destroystokyo/paper/profile/PaperGameProfileRepository.java
@@ -1,11 +1,16 @@
package com.destroystokyo.paper.profile;
+import com.destroystokyo.paper.event.profile.LookupProfileEvent;
+import com.destroystokyo.paper.event.profile.PreLookupProfileEvent;
+import com.google.common.collect.Sets;
import com.mojang.authlib.Agent;
import com.mojang.authlib.Environment;
+import com.mojang.authlib.GameProfile;
import com.mojang.authlib.ProfileLookupCallback;
import com.mojang.authlib.yggdrasil.YggdrasilAuthenticationService;
import com.mojang.authlib.yggdrasil.YggdrasilGameProfileRepository;
+import java.util.Set;
public class PaperGameProfileRepository extends YggdrasilGameProfileRepository {
public PaperGameProfileRepository(YggdrasilAuthenticationService authenticationService, Environment environment) {
super(authenticationService, environment);
@@ -13,6 +18,50 @@ public class PaperGameProfileRepository extends YggdrasilGameProfileRepository {
@Override
public void findProfilesByNames(String[] names, Agent agent, ProfileLookupCallback callback) {
- super.findProfilesByNames(names, agent, callback);
+ Set<String> unfoundNames = Sets.newHashSet();
+ for (String name : names) {
+ PreLookupProfileEvent event = new PreLookupProfileEvent(name);
+ event.callEvent();
+ if (event.getUUID() != null) {
+ // Plugin provided UUI, we can skip network call.
+ GameProfile gameprofile = new GameProfile(event.getUUID(), name);
+ // We might even have properties!
+ Set<ProfileProperty> profileProperties = event.getProfileProperties();
+ if (!profileProperties.isEmpty()) {
+ for (ProfileProperty property : profileProperties) {
+ gameprofile.getProperties().put(property.getName(), CraftPlayerProfile.asAuthlib(property));
+ }
+ }
+ callback.onProfileLookupSucceeded(gameprofile);
+ } else {
+ unfoundNames.add(name);
+ }
+ }
+
+ // Some things were not found.... Proceed to look up.
+ if (!unfoundNames.isEmpty()) {
+ String[] namesArr = unfoundNames.toArray(new String[unfoundNames.size()]);
+ super.findProfilesByNames(namesArr, agent, new PreProfileLookupCallback(callback));
+ }
+ }
+
+ private static class PreProfileLookupCallback implements ProfileLookupCallback {
+ private final ProfileLookupCallback callback;
+
+ PreProfileLookupCallback(ProfileLookupCallback callback) {
+ this.callback = callback;
+ }
+
+ @Override
+ public void onProfileLookupSucceeded(GameProfile gameProfile) {
+ PlayerProfile from = CraftPlayerProfile.asBukkitMirror(gameProfile);
+ new LookupProfileEvent(from).callEvent();
+ callback.onProfileLookupSucceeded(gameProfile);
+ }
+
+ @Override
+ public void onProfileLookupFailed(GameProfile gameProfile, Exception e) {
+ callback.onProfileLookupFailed(gameProfile, e);
+ }
}
}