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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Minecrell <minecrell@minecrell.net>
Date: Thu, 21 Sep 2017 16:14:55 +0200
Subject: [PATCH] Handle plugin prefixes using Log4J configuration

Display logger name in the console for all loggers except the
root logger, Bukkit's logger ("Minecraft") and Minecraft loggers.
Since plugins now use the plugin name as logger name this will
restore the plugin prefixes without having to prepend them manually
to the log messages.

Logger prefixes are shown by default for all loggers except for
the root logger, the Minecraft/Mojang loggers and the Bukkit loggers.
This may cause additional prefixes to be disabled for plugins bypassing
the plugin logger.

diff --git a/build.gradle.kts b/build.gradle.kts
index 3a72c4b2f5f2404518bb606c148a431d98f0b5f4..bfa7e0cb164bdf31b5f54945c6b4345379cfc747 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -18,7 +18,7 @@ dependencies {
           all its classes to check if they are plugins.
           Scanning takes about 1-2 seconds so adding this speeds up the server start.
      */
-    runtimeOnly("org.apache.logging.log4j:log4j-core:2.14.1")
+    implementation("org.apache.logging.log4j:log4j-core:2.14.1") // Paper - implementation
     annotationProcessor("org.apache.logging.log4j:log4j-core:2.14.1") // Paper - Needed to generate meta for our Log4j plugins
     // Paper end
     implementation("org.apache.logging.log4j:log4j-iostreams:2.19.0") // Paper - remove exclusion
diff --git a/src/main/java/org/spigotmc/SpigotConfig.java b/src/main/java/org/spigotmc/SpigotConfig.java
index 0a0aa6de31a94a701074cc5f43c94be7515a185c..489ce6f439778b26eb33ede9432681d4bf9e0116 100644
--- a/src/main/java/org/spigotmc/SpigotConfig.java
+++ b/src/main/java/org/spigotmc/SpigotConfig.java
@@ -290,7 +290,7 @@ public class SpigotConfig
     private static void playerSample()
     {
         SpigotConfig.playerSample = SpigotConfig.getInt( "settings.sample-count", 12 );
-        System.out.println( "Server Ping Player Sample Count: " + SpigotConfig.playerSample );
+        Bukkit.getLogger().log( Level.INFO, "Server Ping Player Sample Count: {0}", playerSample ); // Paper - Use logger
     }
 
     public static int playerShuffle;
diff --git a/src/main/resources/log4j2.xml b/src/main/resources/log4j2.xml
index a994ec0f8621b1f267b40049306f63479c050e2f..bba2de3f3feb5e6a876f9df1eee6da0c7d93e271 100644
--- a/src/main/resources/log4j2.xml
+++ b/src/main/resources/log4j2.xml
@@ -5,10 +5,22 @@
             <PatternLayout pattern="[%d{HH:mm:ss} %level]: %msg%n" />
         </Queue>
         <TerminalConsole name="TerminalConsole">
-            <PatternLayout pattern="%highlightError{[%d{HH:mm:ss} %level]: %msg%n%xEx}" />
+            <PatternLayout>
+                <LoggerNamePatternSelector defaultPattern="%highlightError{[%d{HH:mm:ss} %level]: [%logger] %msg%n%xEx}">
+                    <!-- Log root, Minecraft, Mojang and Bukkit loggers without prefix -->
+                    <PatternMatch key=",net.minecraft.,Minecraft,com.mojang."
+                                  pattern="%highlightError{[%d{HH:mm:ss} %level]: %msg%n%xEx}" />
+                </LoggerNamePatternSelector>
+            </PatternLayout>
         </TerminalConsole>
         <RollingRandomAccessFile name="File" fileName="logs/latest.log" filePattern="logs/%d{yyyy-MM-dd}-%i.log.gz">
-            <PatternLayout pattern="[%d{HH:mm:ss}] [%t/%level]: %stripAnsi{%msg}%n" />
+            <PatternLayout>
+                <LoggerNamePatternSelector defaultPattern="[%d{HH:mm:ss}] [%t/%level]: [%logger] %stripAnsi{%msg}%n">
+                    <!-- Log root, Minecraft, Mojang and Bukkit loggers without prefix -->
+                    <PatternMatch key=",net.minecraft.,Minecraft,com.mojang."
+                                  pattern="[%d{HH:mm:ss}] [%t/%level]: %stripAnsi{%msg}%n" />
+                </LoggerNamePatternSelector>
+            </PatternLayout>
             <Policies>
                 <TimeBasedTriggeringPolicy />
                 <OnStartupTriggeringPolicy />