Leaf/leaf-server/paper-patches/features/0060-cache-profile-data.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Taiyou06 <kaandindar21@gmail.com>
Date: Tue, 22 Jul 2025 01:24:40 +0200
Subject: [PATCH] cache profile data

This patch includes code that references the Caffeine caching library,
which is licensed under the Apache License, Version 2.0.

Caffeine (https://github.com/ben-manes/caffeine)
Copyright (c) Ben Manes

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    https://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

Aside from the Caffeine cache, the code is licensed under: LGPL-3.0 (https://www.gnu.org/licenses/lgpl-3.0.html)

diff --git a/src/main/java/com/destroystokyo/paper/profile/CraftPlayerProfile.java b/src/main/java/com/destroystokyo/paper/profile/CraftPlayerProfile.java
index d2d16055df7ca3c625a720dfca5b4cd090e2972e..db43329d57144471d0c9ce0eed92d2f1bd05f120 100644
--- a/src/main/java/com/destroystokyo/paper/profile/CraftPlayerProfile.java
+++ b/src/main/java/com/destroystokyo/paper/profile/CraftPlayerProfile.java
@@ -35,6 +35,13 @@ public class CraftPlayerProfile implements PlayerProfile, SharedPlayerProfile {
     private GameProfile profile;
     private final PropertySet properties = new PropertySet();
 
+    // Leaf start - cache profile data
+    private static final com.github.benmanes.caffeine.cache.Cache<UUID, ProfileResult> PROFILE_DATA_CACHE = com.github.benmanes.caffeine.cache.Caffeine.newBuilder()
+        .expireAfterWrite(org.dreeam.leaf.config.modules.misc.CacheProfileLookup.timeout, java.util.concurrent.TimeUnit.MINUTES)
+        .maximumSize(org.dreeam.leaf.config.modules.misc.CacheProfileLookup.maxSize)
+        .build();
+    // Leaf end - cache profile data
+
     public CraftPlayerProfile(CraftPlayer player) {
         this.profile = player.getHandle().getGameProfile();
     }
@@ -195,11 +202,7 @@ public class CraftPlayerProfile implements PlayerProfile, SharedPlayerProfile {
 
     @Override
     public @NotNull CompletableFuture<PlayerProfile> update() {
-        return CompletableFuture.supplyAsync(() -> {
-            final CraftPlayerProfile clone = clone();
-            clone.complete(true);
-            return clone;
-        }, Util.PROFILE_EXECUTOR);
+        return CompletableFuture.supplyAsync(this::getNewProfile, Util.PROFILE_EXECUTOR); // Leaf - cache profile data
     }
 
     @Override
@@ -260,7 +263,7 @@ public class CraftPlayerProfile implements PlayerProfile, SharedPlayerProfile {
         MinecraftServer server = MinecraftServer.getServer();
         boolean isCompleteFromCache = this.completeFromCache(true, onlineMode);
         if (onlineMode && (!isCompleteFromCache || (textures && !hasTextures()))) {
-            ProfileResult result = server.getSessionService().fetchProfile(this.profile.getId(), true);
+            ProfileResult result = this.fetchProfile(server); // Leaf - cache profile data
             if (result != null && result.profile() != null) {
                 copyProfileProperties(result.profile(), this.profile, true);
             }
@@ -271,6 +274,80 @@ public class CraftPlayerProfile implements PlayerProfile, SharedPlayerProfile {
         return this.isComplete() && (!onlineMode || !textures || hasTextures());
     }
 
+    // Leaf start - cache profile data
+    // com.destroystokyo.paper.profile.CraftPlayerProfile#update is never used in server internal
+    // Probably only very rare plugins may use this. So here is just for cache update consistency.
+    // getNewProfile originally copied from org.bukkit.craftbukkit.profile.CraftPlayerProfile#getUpdatedProfile
+    private CraftPlayerProfile getNewProfile() {
+        MinecraftServer server = MinecraftServer.getServer();
+        GameProfile currentProfile = this.buildGameProfile();
+
+        // Try to get profile from cache if UUID is not set
+        if (currentProfile.getId().equals(Util.NIL_UUID) && server.getProfileCache() != null) {
+            currentProfile = server.getProfileCache().get(currentProfile.getName()).orElse(currentProfile);
+        }
+
+        // Fetch profile data if we have a valid UUID
+        if (!currentProfile.getId().equals(Util.NIL_UUID)) {
+            if (org.dreeam.leaf.config.modules.misc.CacheProfileLookup.enabled &&
+                PROFILE_DATA_CACHE.asMap().containsKey(currentProfile.getId())) {
+
+                ProfileResult cachedData = PROFILE_DATA_CACHE.getIfPresent(currentProfile.getId());
+                if (cachedData != null) {
+                    currentProfile = cachedData.profile();
+                }
+            } else {
+                ProfileResult fetchedData = server.getSessionService().fetchProfile(currentProfile.getId(), true);
+                if (org.dreeam.leaf.config.modules.misc.CacheProfileLookup.enabled && fetchedData != null) {
+                    PROFILE_DATA_CACHE.put(currentProfile.getId(), fetchedData);
+                }
+                if (fetchedData != null) {
+                    currentProfile = fetchedData.profile();
+                }
+            }
+        }
+
+        return new CraftPlayerProfile(currentProfile);
+    }
+
+    private ProfileResult fetchProfile(MinecraftServer server) {
+        GameProfile targetProfile = this.buildGameProfile();
+
+        // Resolve UUID from name cache if needed
+        if (targetProfile.getId().equals(Util.NIL_UUID) && server.getProfileCache() != null) {
+            targetProfile = server.getProfileCache().get(targetProfile.getName()).orElse(targetProfile);
+        }
+
+        // Skip if still no valid UUID
+        if (targetProfile.getId().equals(Util.NIL_UUID)) {
+            return null;
+        }
+
+        // Check cache first if enabled
+        if (org.dreeam.leaf.config.modules.misc.CacheProfileLookup.enabled) {
+            ProfileResult cachedResult = PROFILE_DATA_CACHE.getIfPresent(targetProfile.getId());
+            if (cachedResult != null) {
+                return cachedResult;
+            }
+        }
+
+        // Fetch fresh data from Mojang
+        ProfileResult fetchedResult = server.getSessionService().fetchProfile(targetProfile.getId(), true);
+
+        // Cache the result if caching is enabled and data was fetched successfully
+        if (org.dreeam.leaf.config.modules.misc.CacheProfileLookup.enabled && fetchedResult != null) {
+            PROFILE_DATA_CACHE.put(targetProfile.getId(), fetchedResult);
+        }
+
+        return fetchedResult;
+    }
+
+    @Override
+    public boolean hasTextures() {
+        return this.profile.getProperties().containsKey("textures");
+    }
+    // Leaf end - cache profile data
+
     private static void copyProfileProperties(GameProfile source, GameProfile target) {
         copyProfileProperties(source, target, false);
     }