PaperMC/patches/api/0067-Allow-plugins-to-use-SLF4J-for-logging.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Minecrell <minecrell@minecrell.net>
Date: Thu, 21 Sep 2017 16:33:12 +0200
Subject: [PATCH] Allow plugins to use SLF4J for logging

SLF4J is a commonly used abstraction for various logging frameworks
such as java.util.logging (JUL) or Log4j. Currently, plugins are
required to do all their logging using the provided JUL logger.
This is annoying for plugins that target multiple platforms or when
using libraries that log messages using SLF4J.

Expose SLF4J as optional logging API for plugins, so they can use
it without having to shade it in the plugin and going through
several layers of logging abstraction.

diff --git a/build.gradle.kts b/build.gradle.kts
index a5f7258a543c8a9e2ce55c6f8f1b6f3435ef608e..12c4f278d52bd6fb626fc7cd9414e8869c49fcd2 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -25,6 +25,7 @@ dependencies {
     api("net.kyori:adventure-text-serializer-plain")
     api("org.ow2.asm:asm:9.0")
     api("org.ow2.asm:asm-commons:9.0")
+    api("org.apache.logging.log4j:log4j-api:2.14.1") // Paper
 
     compileOnly("org.apache.maven:maven-resolver-provider:3.8.1")
     compileOnly("org.apache.maven.resolver:maven-resolver-connector-basic:1.7.0")
diff --git a/src/main/java/org/bukkit/plugin/Plugin.java b/src/main/java/org/bukkit/plugin/Plugin.java
index febfec6efafd76bb59b4b43aa223af16f73339b4..79890c68f1ad31f951dfdbd9a16dac500ec58c40 100644
--- a/src/main/java/org/bukkit/plugin/Plugin.java
+++ b/src/main/java/org/bukkit/plugin/Plugin.java
@@ -166,6 +166,13 @@ public interface Plugin extends TabExecutor {
     @NotNull
     public Logger getLogger();
 
+    // Paper start - Add SLF4J logger
+    @NotNull
+    default org.slf4j.Logger getSLF4JLogger() {
+        return org.slf4j.LoggerFactory.getLogger(getLogger().getName());
+    }
+    // Paper end
+
     /**
      * Returns the name of the plugin.
      * <p>