Update Upstream

609c7b8 Scrapped Logging Framework 4 Java

Closes #997
Closes #998
Closes #999
Closes #1000
Closes #1001
Closes #1002

buildSrc/build.gradle.kts

@@ -11,9 +11,6 @@ repositories {
     maven {
         name = "EngineHub"
         url = uri("https://maven.enginehub.org/repo/")
-        content {
-            includeGroupByRegex("com.sk89q.*")
-        }
     }
 }
 

buildSrc/src/main/kotlin/CommonConfig.kt

@@ -2,6 +2,7 @@ import org.gradle.api.Project
 import org.gradle.api.plugins.JavaPluginExtension
 import org.gradle.jvm.toolchain.JavaLanguageVersion
 import org.gradle.kotlin.dsl.dependencies
+import org.gradle.kotlin.dsl.get
 import org.gradle.kotlin.dsl.repositories
 import org.gradle.kotlin.dsl.the
 
@@ -14,19 +15,10 @@ fun Project.applyCommonConfiguration() {
         maven {
             name = "IntellectualSites"
             url = uri("https://mvn.intellectualsites.com/content/groups/public/")
-            content {
-                includeGroup("com.plotsquared")
-                includeGroup("com.intellectualsites.paster")
-                includeGroup("com.github.intellectualsites.plotsquared")
-            }
         }
         maven {
             name = "EngineHub"
             url = uri("https://maven.enginehub.org/repo/")
-            content {
-                includeGroupByRegex("org.enginehub.*")
-                includeGroupByRegex("com.sk89q.*")
-            }
         }
         maven {
             name = "OSS Sonatype Snapshots"
@@ -39,13 +31,6 @@ fun Project.applyCommonConfiguration() {
         maven {
             name = "Athion"
             url = uri("https://ci.athion.net/plugin/repository/tools/")
-            content {
-                includeGroup("com.massivecraft")
-                includeGroup("com.thevoxelbox.voxelsniper")
-                includeGroup("com.palmergames.bukkit")
-                includeGroup("net.fabiozumbi12")
-                includeGroupByRegex("com.destroystokyo.*")
-            }
         }
     }
 
@@ -55,6 +40,14 @@ fun Project.applyCommonConfiguration() {
         }
     }
 
+    configurations.findByName("compileClasspath")?.apply {
+        resolutionStrategy.componentSelection {
+            withModule("org.slf4j:slf4j-api") {
+                reject("No SLF4J allowed on compile classpath")
+            }
+        }
+    }
+
     plugins.withId("java") {
         the<JavaPluginExtension>().toolchain {
             languageVersion.set(JavaLanguageVersion.of(8))

buildSrc/src/main/kotlin/LibsConfig.kt

@@ -38,7 +38,7 @@ fun Project.applyLibrariesConfiguration() {
             exclude(dependency("com.google.guava:guava"))
             exclude(dependency("com.google.code.gson:gson"))
             exclude(dependency("org.checkerframework:checker-qual"))
-            exclude(dependency("org.slf4j:slf4j-api"))
+            exclude(dependency("org.apache.logging.log4j:log4j-api"))
         }
 
         relocations.forEach { (from, to) ->

buildSrc/src/main/kotlin/Versions.kt

@@ -3,11 +3,10 @@ import org.gradle.api.Project
 object Versions {
     const val TEXT = "3.0.4"
     const val TEXT_EXTRAS = "3.0.6"
-    const val PISTON = "0.5.6"
+    const val PISTON = "0.5.7"
     const val AUTO_VALUE = "1.7.4"
     const val JUNIT = "5.7.0"
     const val MOCKITO = "3.8.0"
-    const val SLF4J = "1.7.30"
     const val LOGBACK = "1.2.3"
     const val FAST_UTIL = "8.2.1"
     const val GUAVA = "21.0"

settings.gradle.kts

@@ -15,9 +15,6 @@ dependencyResolutionManagement {
         maven {
             name = "EngineHub"
             url = uri("https://maven.enginehub.org/repo/")
-            content {
-                includeGroupByRegex("com.sk89q.*")
-            }
         }
     }
 }

worldedit-bukkit/build.gradle.kts

@@ -11,26 +11,15 @@ repositories {
     maven {
         name = "SpigotMC"
         url = uri("https://hub.spigotmc.org/nexus/content/groups/public")
-        content {
-            includeGroup("org.bukkit")
-            includeGroup("org.spigotmc")
-        }
     }
     maven {
         name = "PaperMC"
         url = uri("https://papermc.io/repo/repository/maven-public/")
-        content {
+            }
-            includeGroup("io.papermc")
-            includeGroup("com.destroystokyo.paper")
-        }
-    }
     maven {
         name = "EngineHub"
         url = uri("https://maven.enginehub.org/repo/")
-        content {
+            }
-            includeGroupByRegex("com.sk89q.*")
-        }
-    }
     maven {
         name = "Athion"
         url = uri("https://ci.athion.net/plugin/repository/tools/")
@@ -38,45 +27,26 @@ repositories {
     maven {
         name = "JitPack"
         url = uri("https://jitpack.io")
-        content {
+            }
-            includeGroup("com.github.MilkBowl")
-            includeGroup("com.github.TechFortress")
-        }
-    }
     maven {
         name = "ProtocolLib"
         url = uri("https://repo.dmulloy2.net/nexus/repository/public/")
-        content {
+            }
-            includeGroup("com.comphenix.protocol")
-        }
-    }
     maven {
         name = "Inventivetalent"
         url = uri("https://repo.inventivetalent.org/content/groups/public/")
-        content {
+            }
-            includeGroupByRegex("org.inventivetalent.*")
-        }
-    }
     maven {
         name = "IntellectualSites 3rd Party"
         url = uri("https://mvn.intellectualsites.com/content/repositories/thirdparty")
-        content {
+            }
-            includeGroup("de.notmyfault")
-        }
-    }
     maven {
         name = "OSS Sonatype Snapshots"
         url = uri("https://oss.sonatype.org/content/repositories/snapshots/")
-        content {
+            }
-            includeGroup("net.kyori")
-        }
-    }
     maven {
         name = "OSS Sonatype Releases"
         url = uri("https://oss.sonatype.org/content/repositories/releases/")
-        content {
-            includeGroup("net.kyori")
-        }
     }
     flatDir { dir(File("src/main/resources")) }
 }
@@ -105,7 +75,13 @@ dependencies {
     api("com.destroystokyo.paper:paper-api:1.16.5-R0.1-SNAPSHOT") {
         exclude("junit", "junit")
         isTransitive = false
+        exclude(group = "org.slf4j", module = "slf4j-api")
     }
+    implementation(enforcedPlatform("org.apache.logging.log4j:log4j-bom:2.8.1") {
+        // Note: Paper will bump to 2.11.2, but we should only depend on 2.8 APIs for compatibility.
+        because("Spigot provides Log4J (sort of, not in API, implicitly part of server)")
+    })
+    implementation("org.apache.logging.log4j:log4j-api")
     compileOnly("org.spigotmc:spigot:1.16.5-R0.1-SNAPSHOT")
     compileOnly("org.jetbrains:annotations:20.1.0")
     testCompileOnly("org.jetbrains:annotations:20.1.0")
@@ -113,7 +89,6 @@ dependencies {
     compileOnly("com.sk89q:dummypermscompat:1.10") {
         exclude("com.github.MilkBowl", "VaultAPI")
     }
-    implementation("org.apache.logging.log4j:log4j-slf4j-impl:2.8.1")
     testImplementation("org.mockito:mockito-core:3.8.0")
     compileOnly("com.sk89q.worldguard:worldguard-bukkit:7.0.4") {
         exclude("com.sk89q.worldedit", "worldedit-bukkit")
@@ -162,13 +137,14 @@ tasks.named<ShadowJar>("shadowJar") {
     })
     archiveFileName.set("FastAsyncWorldEdit-Bukkit-${project.version}.jar")
     dependencies {
-        relocate("org.slf4j", "com.sk89q.worldedit.slf4j")
+        // In tandem with not bundling log4j, we shouldn't relocate base package here.
-        relocate("org.apache.logging.slf4j", "com.sk89q.worldedit.log4jbridge")
+        // relocate("org.apache.logging", "com.sk89q.worldedit.log4j")
         relocate("org.antlr.v4", "com.sk89q.worldedit.antlr4")
         include(dependency(":worldedit-core"))
         include(dependency(":worldedit-libs:bukkit"))
-        include(dependency("org.slf4j:slf4j-api"))
+        // Purposefully not included, we assume (even though no API exposes it) that Log4J will be present at runtime
-        include(dependency("org.apache.logging.log4j:log4j-slf4j-impl"))
+        // If it turns out not to be true for Spigot/Paper, our only two official platforms, this can be uncommented.
+        // include(dependency("org.apache.logging.log4j:log4j-api"))
         include(dependency("org.antlr:antlr4-runtime"))
         relocate("org.bstats", "com.sk89q.worldedit.bstats") {
             include(dependency("org.bstats:"))

worldedit-bukkit/src/main/java/com/boydti/fawe/bukkit/FaweBukkit.java

@@ -28,7 +28,9 @@ import com.boydti.fawe.util.WEManager;
 import com.boydti.fawe.util.image.ImageViewer;
 import com.sk89q.worldedit.bukkit.BukkitAdapter;
 import com.sk89q.worldedit.bukkit.BukkitPlayer;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import io.papermc.lib.PaperLib;
+import org.apache.logging.log4j.Logger;
 import org.bukkit.Bukkit;
 import org.bukkit.entity.Player;
 import org.bukkit.event.EventHandler;
@@ -38,8 +40,6 @@ import org.bukkit.event.player.PlayerQuitEvent;
 import org.bukkit.event.world.WorldLoadEvent;
 import org.bukkit.plugin.Plugin;
 import org.bukkit.plugin.PluginManager;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
 import java.io.File;
 import java.io.FileOutputStream;
@@ -50,7 +50,7 @@ import java.util.function.Supplier;
 
 public class FaweBukkit implements IFawe, Listener {
 
-    private static final Logger log = LoggerFactory.getLogger(FaweBukkit.class);
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
 
     private final Plugin plugin;
     private ItemUtil itemUtil;
@@ -70,7 +70,7 @@ public class FaweBukkit implements IFawe, Listener {
             try {
                 new BrushListener(plugin);
             } catch (Throwable e) {
-                log.error("Brush Listener Failed", e);
+                LOGGER.error("Brush Listener Failed", e);
             }
             if (PaperLib.isPaper() && Settings.IMP.EXPERIMENTAL.DYNAMIC_CHUNK_RENDERING > 1) {
                 new RenderListener(plugin);
@@ -162,7 +162,7 @@ public class FaweBukkit implements IFawe, Listener {
                 this.itemUtil = tmp = new ItemUtil();
             } catch (Throwable e) {
                 Settings.IMP.EXPERIMENTAL.PERSISTENT_BRUSHES = false;
-                log.error("Persistent Brushes Failed", e);
+                LOGGER.error("Persistent Brushes Failed", e);
             }
         }
         return tmp;
@@ -208,7 +208,7 @@ public class FaweBukkit implements IFawe, Listener {
         if (worldguardPlugin != null && worldguardPlugin.isEnabled()) {
             try {
                 managers.add(new Worldguard(worldguardPlugin));
-                log.debug("Attempting to use plugin 'WorldGuard'");
+                LOGGER.info("Attempting to use plugin 'WorldGuard'");
             } catch (Throwable ignored) {
             }
         }
@@ -216,7 +216,7 @@ public class FaweBukkit implements IFawe, Listener {
         if (townyPlugin != null && townyPlugin.isEnabled()) {
             try {
                 managers.add(new TownyFeature(townyPlugin));
-                log.debug("Attempting to use plugin 'Towny'");
+                LOGGER.info("Attempting to use plugin 'Towny'");
             } catch (Throwable ignored) {
             }
         }
@@ -224,7 +224,7 @@ public class FaweBukkit implements IFawe, Listener {
         if (residencePlugin != null && residencePlugin.isEnabled()) {
             try {
                 managers.add(new ResidenceFeature(residencePlugin, this));
-                log.debug("Attempting to use plugin 'Residence'");
+                LOGGER.info("Attempting to use plugin 'Residence'");
             } catch (Throwable ignored) {
             }
         }
@@ -233,7 +233,7 @@ public class FaweBukkit implements IFawe, Listener {
         if (griefpreventionPlugin != null && griefpreventionPlugin.isEnabled()) {
             try {
                 managers.add(new GriefPreventionFeature(griefpreventionPlugin));
-                log.debug("Attempting to use plugin 'GriefPrevention'");
+                LOGGER.debug("Attempting to use plugin 'GriefPrevention'");
             } catch (Throwable ignored) {
             }
         }
@@ -307,6 +307,6 @@ public class FaweBukkit implements IFawe, Listener {
             WEManager.IMP.managers
                 .add(new com.boydti.fawe.bukkit.regions.plotsquared.PlotSquaredFeature());
         }
-        log.info("Plugin 'PlotSquared' found. Using it now.");
+        LOGGER.info("Plugin 'PlotSquared' found. Using it now.");
     }
 }

worldedit-bukkit/src/main/java/com/boydti/fawe/bukkit/adapter/BukkitQueueHandler.java

@@ -3,13 +3,16 @@ package com.boydti.fawe.bukkit.adapter;
 import co.aikar.timings.Timings;
 import com.boydti.fawe.beta.implementation.queue.QueueHandler;
 import com.boydti.fawe.bukkit.listener.ChunkListener;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
+import org.apache.logging.log4j.Logger;
 import org.spigotmc.AsyncCatcher;
 
 import java.lang.reflect.Method;
 
-import static org.slf4j.LoggerFactory.getLogger;
-
 public class BukkitQueueHandler extends QueueHandler {
+
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
+
     private volatile boolean timingsEnabled;
     private static boolean alertTimingsChange = true;
 
@@ -32,7 +35,7 @@ public class BukkitQueueHandler extends QueueHandler {
                 if (timingsEnabled) {
                     if (alertTimingsChange) {
                         alertTimingsChange = false;
-                        getLogger(BukkitQueueHandler.class).debug("Having `parallel-threads` > 1 interferes with the timings.");
+                        LOGGER.debug("Having `parallel-threads` > 1 interferes with the timings.");
                     }
                     Timings.setTimingsEnabled(false);
                     methodCheck.invoke(null);

worldedit-bukkit/src/main/java/com/boydti/fawe/bukkit/adapter/mc1_15_2/BukkitGetBlocks_1_15_2.java

@@ -24,6 +24,7 @@ import com.sk89q.worldedit.bukkit.WorldEditPlugin;
 import com.sk89q.worldedit.bukkit.adapter.BukkitImplAdapter;
 import com.sk89q.worldedit.bukkit.adapter.impl.FAWE_Spigot_v1_15_R2;
 import com.sk89q.worldedit.internal.Constants;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.world.biome.BiomeType;
 import com.sk89q.worldedit.world.block.BlockTypes;
@@ -50,14 +51,13 @@ import net.minecraft.server.v1_15_R1.NibbleArray;
 import net.minecraft.server.v1_15_R1.SectionPosition;
 import net.minecraft.server.v1_15_R1.TileEntity;
 import net.minecraft.server.v1_15_R1.WorldServer;
+import org.apache.logging.log4j.Logger;
 import org.bukkit.World;
 import org.bukkit.block.Biome;
 import org.bukkit.craftbukkit.v1_15_R1.CraftWorld;
 import org.bukkit.craftbukkit.v1_15_R1.block.CraftBlock;
 import org.bukkit.event.entity.CreatureSpawnEvent;
 import org.jetbrains.annotations.NotNull;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
 import java.util.AbstractSet;
 import java.util.Arrays;
@@ -74,11 +74,9 @@ import java.util.concurrent.Future;
 import java.util.function.Function;
 import javax.annotation.Nullable;
 
-import static org.slf4j.LoggerFactory.getLogger;
-
 public class BukkitGetBlocks_1_15_2 extends CharGetBlocks implements BukkitGetBlocks {
 
-    private static final Logger log = LoggerFactory.getLogger(BukkitGetBlocks_1_15_2.class);
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
 
     private static final Function<BlockPosition, BlockVector3> posNms2We = v -> BlockVector3.at(v.getX(), v.getY(), v.getZ());
     private static final Function<TileEntity, CompoundTag> nmsTile2We = tileEntity -> new LazyCompoundTag_1_15_2(Suppliers.memoize(() -> tileEntity.save(new NBTTagCompound())));
@@ -438,7 +436,7 @@ public class BukkitGetBlocks_1_15_2 extends CharGetBlocks implements BukkitGetBl
                         } else {
                             existingSection = sections[layer];
                             if (existingSection == null) {
-                                log.error("Skipping invalid null section. chunk:" + chunkX + ","
+                                LOGGER.error("Skipping invalid null section. chunk:" + chunkX + ","
                                               + chunkZ + " layer: " + layer);
                                 continue;
                             }
@@ -466,7 +464,7 @@ public class BukkitGetBlocks_1_15_2 extends CharGetBlocks implements BukkitGetBl
                             }
                             newSection = BukkitAdapter_1_15_2.newChunkSection(layer, this::loadPrivately, setArr, fastmode);
                             if (!BukkitAdapter_1_15_2.setSectionAtomic(sections, existingSection, newSection, layer)) {
-                                log.error("Failed to set chunk section:" + chunkX + "," + chunkZ + " layer: " + layer);
+                                LOGGER.error("Failed to set chunk section:" + chunkX + "," + chunkZ + " layer: " + layer);
                             } else {
                                 updateGet(this, nmsChunk, sections, newSection, setArr, layer);
                             }
@@ -546,7 +544,7 @@ public class BukkitGetBlocks_1_15_2 extends CharGetBlocks implements BukkitGetBl
                             final ListTag posTag = (ListTag) entityTagMap.get("Pos");
                             final ListTag rotTag = (ListTag) entityTagMap.get("Rotation");
                             if (idTag == null || posTag == null || rotTag == null) {
-                                getLogger(BukkitGetBlocks_1_15_2.class).debug("Unknown entity tag: " + nativeTag);
+                                LOGGER.debug("Unknown entity tag: " + nativeTag);
                                 continue;
                             }
                             final double x = posTag.getDouble(0);

worldedit-bukkit/src/main/java/com/boydti/fawe/bukkit/adapter/mc1_16_1/BukkitGetBlocks_1_16_1.java

@@ -24,6 +24,7 @@ import com.sk89q.worldedit.bukkit.WorldEditPlugin;
 import com.sk89q.worldedit.bukkit.adapter.BukkitImplAdapter;
 import com.sk89q.worldedit.bukkit.adapter.impl.FAWE_Spigot_v1_16_R1;
 import com.sk89q.worldedit.internal.Constants;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.world.biome.BiomeType;
 import com.sk89q.worldedit.world.block.BlockTypes;
@@ -50,14 +51,13 @@ import net.minecraft.server.v1_16_R1.NibbleArray;
 import net.minecraft.server.v1_16_R1.SectionPosition;
 import net.minecraft.server.v1_16_R1.TileEntity;
 import net.minecraft.server.v1_16_R1.WorldServer;
+import org.apache.logging.log4j.Logger;
 import org.bukkit.World;
 import org.bukkit.block.Biome;
 import org.bukkit.craftbukkit.v1_16_R1.CraftWorld;
 import org.bukkit.craftbukkit.v1_16_R1.block.CraftBlock;
 import org.bukkit.event.entity.CreatureSpawnEvent;
 import org.jetbrains.annotations.NotNull;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
 import java.util.AbstractSet;
 import java.util.Arrays;
@@ -74,11 +74,9 @@ import java.util.concurrent.Future;
 import java.util.function.Function;
 import javax.annotation.Nullable;
 
-import static org.slf4j.LoggerFactory.getLogger;
-
 public class BukkitGetBlocks_1_16_1 extends CharGetBlocks implements BukkitGetBlocks {
 
-    private static final Logger log = LoggerFactory.getLogger(BukkitGetBlocks_1_16_1.class);
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
 
     private static final Function<BlockPosition, BlockVector3> posNms2We = v -> BlockVector3.at(v.getX(), v.getY(), v.getZ());
     private static final Function<TileEntity, CompoundTag> nmsTile2We = tileEntity -> new LazyCompoundTag_1_16_1(Suppliers.memoize(() -> tileEntity.save(new NBTTagCompound())));
@@ -438,7 +436,7 @@ public class BukkitGetBlocks_1_16_1 extends CharGetBlocks implements BukkitGetBl
                         } else {
                             existingSection = sections[layer];
                             if (existingSection == null) {
-                                log.error("Skipping invalid null section. chunk:" + chunkX + "," +
+                                LOGGER.error("Skipping invalid null section. chunk:" + chunkX + "," +
                                               chunkZ + " layer: " + layer);
                                 continue;
                             }
@@ -468,7 +466,7 @@ public class BukkitGetBlocks_1_16_1 extends CharGetBlocks implements BukkitGetBl
                                     .newChunkSection(layer, this::loadPrivately, setArr, fastmode);
                             if (!BukkitAdapter_1_16_1
                                     .setSectionAtomic(sections, existingSection, newSection, layer)) {
-                                log.error("Failed to set chunk section:" + chunkX + "," + chunkZ + " layer: " + layer);
+                                LOGGER.error("Failed to set chunk section:" + chunkX + "," + chunkZ + " layer: " + layer);
                             } else {
                                 updateGet(this, nmsChunk, sections, newSection, setArr, layer);
                             }
@@ -548,8 +546,7 @@ public class BukkitGetBlocks_1_16_1 extends CharGetBlocks implements BukkitGetBl
                             final ListTag posTag = (ListTag) entityTagMap.get("Pos");
                             final ListTag rotTag = (ListTag) entityTagMap.get("Rotation");
                             if (idTag == null || posTag == null || rotTag == null) {
-                                getLogger(
+                                LOGGER.debug("Unknown entity tag: " + nativeTag);
-                                        BukkitGetBlocks_1_16_1.class).debug("Unknown entity tag: " + nativeTag);
                                 continue;
                             }
                             final double x = posTag.getDouble(0);

worldedit-bukkit/src/main/java/com/boydti/fawe/bukkit/adapter/mc1_16_2/BukkitGetBlocks_1_16_2.java

@@ -24,6 +24,7 @@ import com.sk89q.worldedit.bukkit.WorldEditPlugin;
 import com.sk89q.worldedit.bukkit.adapter.BukkitImplAdapter;
 import com.sk89q.worldedit.bukkit.adapter.impl.FAWE_Spigot_v1_16_R2;
 import com.sk89q.worldedit.internal.Constants;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.world.biome.BiomeType;
 import com.sk89q.worldedit.world.block.BlockTypes;
@@ -51,14 +52,13 @@ import net.minecraft.server.v1_16_R2.NibbleArray;
 import net.minecraft.server.v1_16_R2.SectionPosition;
 import net.minecraft.server.v1_16_R2.TileEntity;
 import net.minecraft.server.v1_16_R2.WorldServer;
+import org.apache.logging.log4j.Logger;
 import org.bukkit.World;
 import org.bukkit.block.Biome;
 import org.bukkit.craftbukkit.v1_16_R2.CraftWorld;
 import org.bukkit.craftbukkit.v1_16_R2.block.CraftBlock;
 import org.bukkit.event.entity.CreatureSpawnEvent;
 import org.jetbrains.annotations.NotNull;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
 import javax.annotation.Nullable;
 import java.util.AbstractSet;
@@ -75,11 +75,9 @@ import java.util.concurrent.Callable;
 import java.util.concurrent.Future;
 import java.util.function.Function;
 
-import static org.slf4j.LoggerFactory.getLogger;
-
 public class BukkitGetBlocks_1_16_2 extends CharGetBlocks implements BukkitGetBlocks {
 
-    private static final Logger log = LoggerFactory.getLogger(BukkitGetBlocks_1_16_2.class);
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
 
     private static final Function<BlockPosition, BlockVector3> posNms2We = v -> BlockVector3.at(v.getX(), v.getY(), v.getZ());
     private static final Function<TileEntity, CompoundTag> nmsTile2We = tileEntity -> new LazyCompoundTag_1_16_2(Suppliers.memoize(() -> tileEntity.save(new NBTTagCompound())));
@@ -441,7 +439,7 @@ public class BukkitGetBlocks_1_16_2 extends CharGetBlocks implements BukkitGetBl
                         } else {
                             existingSection = sections[layer];
                             if (existingSection == null) {
-                                log.error("Skipping invalid null section. chunk:" + chunkX + ","
+                                LOGGER.error("Skipping invalid null section. chunk:" + chunkX + ","
                                               + chunkZ + " layer: " + layer);
                                 continue;
                             }
@@ -471,7 +469,7 @@ public class BukkitGetBlocks_1_16_2 extends CharGetBlocks implements BukkitGetBl
                                 .newChunkSection(layer, this::loadPrivately, setArr, fastmode);
                             if (!BukkitAdapter_1_16_2
                                 .setSectionAtomic(sections, existingSection, newSection, layer)) {
-                                log.error("Failed to set chunk section:" + chunkX + "," + chunkZ + " layer: " + layer);
+                                LOGGER.error("Failed to set chunk section:" + chunkX + "," + chunkZ + " layer: " + layer);
                             } else {
                                 updateGet(this, nmsChunk, sections, newSection, setArr, layer);
                             }
@@ -551,8 +549,7 @@ public class BukkitGetBlocks_1_16_2 extends CharGetBlocks implements BukkitGetBl
                             final ListTag posTag = (ListTag) entityTagMap.get("Pos");
                             final ListTag rotTag = (ListTag) entityTagMap.get("Rotation");
                             if (idTag == null || posTag == null || rotTag == null) {
-                                getLogger(
+                                LOGGER.debug("Unknown entity tag: " + nativeTag);
-                                    BukkitGetBlocks_1_16_2.class).debug("Unknown entity tag: " + nativeTag);
                                 continue;
                             }
                             final double x = posTag.getDouble(0);

worldedit-bukkit/src/main/java/com/boydti/fawe/bukkit/adapter/mc1_16_5/BukkitGetBlocks_1_16_5.java

@@ -24,6 +24,7 @@ import com.sk89q.worldedit.bukkit.WorldEditPlugin;
 import com.sk89q.worldedit.bukkit.adapter.BukkitImplAdapter;
 import com.sk89q.worldedit.bukkit.adapter.impl.FAWE_Spigot_v1_16_R3;
 import com.sk89q.worldedit.internal.Constants;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.world.biome.BiomeType;
 import com.sk89q.worldedit.world.block.BlockTypes;
@@ -51,14 +52,13 @@ import net.minecraft.server.v1_16_R3.NibbleArray;
 import net.minecraft.server.v1_16_R3.SectionPosition;
 import net.minecraft.server.v1_16_R3.TileEntity;
 import net.minecraft.server.v1_16_R3.WorldServer;
+import org.apache.logging.log4j.Logger;
 import org.bukkit.World;
 import org.bukkit.block.Biome;
 import org.bukkit.craftbukkit.v1_16_R3.CraftWorld;
 import org.bukkit.craftbukkit.v1_16_R3.block.CraftBlock;
 import org.bukkit.event.entity.CreatureSpawnEvent;
 import org.jetbrains.annotations.NotNull;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
 import javax.annotation.Nullable;
 import java.util.AbstractSet;
@@ -75,11 +75,9 @@ import java.util.concurrent.Callable;
 import java.util.concurrent.Future;
 import java.util.function.Function;
 
-import static org.slf4j.LoggerFactory.getLogger;
-
 public class BukkitGetBlocks_1_16_5 extends CharGetBlocks implements BukkitGetBlocks {
 
-    private static final Logger log = LoggerFactory.getLogger(BukkitGetBlocks_1_16_5.class);
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
 
     private static final Function<BlockPosition, BlockVector3> posNms2We = v -> BlockVector3.at(v.getX(), v.getY(), v.getZ());
     private static final Function<TileEntity, CompoundTag> nmsTile2We = tileEntity -> new LazyCompoundTag_1_16_5(Suppliers.memoize(() -> tileEntity.save(new NBTTagCompound())));
@@ -441,7 +439,7 @@ public class BukkitGetBlocks_1_16_5 extends CharGetBlocks implements BukkitGetBl
                         } else {
                             existingSection = sections[layer];
                             if (existingSection == null) {
-                                log.error("Skipping invalid null section. chunk:" + chunkX + ","
+                                LOGGER.error("Skipping invalid null section. chunk:" + chunkX + ","
                                               + chunkZ + " layer: " + layer);
                                 continue;
                             }
@@ -471,7 +469,7 @@ public class BukkitGetBlocks_1_16_5 extends CharGetBlocks implements BukkitGetBl
                                 .newChunkSection(layer, this::loadPrivately, setArr, fastmode);
                             if (!BukkitAdapter_1_16_5
                                 .setSectionAtomic(sections, existingSection, newSection, layer)) {
-                                log.error("Failed to set chunk section:" + chunkX + "," + chunkZ + " layer: " + layer);
+                                LOGGER.error("Failed to set chunk section:" + chunkX + "," + chunkZ + " layer: " + layer);
                             } else {
                                 updateGet(this, nmsChunk, sections, newSection, setArr, layer);
                             }
@@ -551,8 +549,7 @@ public class BukkitGetBlocks_1_16_5 extends CharGetBlocks implements BukkitGetBl
                             final ListTag posTag = (ListTag) entityTagMap.get("Pos");
                             final ListTag rotTag = (ListTag) entityTagMap.get("Rotation");
                             if (idTag == null || posTag == null || rotTag == null) {
-                                getLogger(
+                                LOGGER.debug("Unknown entity tag: " + nativeTag);
-                                    BukkitGetBlocks_1_16_5.class).debug("Unknown entity tag: " + nativeTag);
                                 continue;
                             }
                             final double x = posTag.getDouble(0);

worldedit-bukkit/src/main/java/com/boydti/fawe/bukkit/filter/WorldGuardFilter.java

@@ -3,18 +3,22 @@ package com.boydti.fawe.bukkit.filter;
 import com.boydti.fawe.Fawe;
 import com.boydti.fawe.regions.general.CuboidRegionFilter;
 import com.sk89q.worldedit.bukkit.BukkitAdapter;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldguard.WorldGuard;
 import com.sk89q.worldguard.protection.ApplicableRegionSet;
 import com.sk89q.worldguard.protection.managers.RegionManager;
 import com.sk89q.worldguard.protection.regions.ProtectedCuboidRegion;
 import com.sk89q.worldguard.protection.regions.ProtectedRegion;
+import org.apache.logging.log4j.Logger;
 import org.bukkit.World;
 
 import static com.google.common.base.Preconditions.checkNotNull;
-import static org.slf4j.LoggerFactory.getLogger;
 
 public class WorldGuardFilter extends CuboidRegionFilter {
+
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
+
     private final World world;
     private boolean large;
     private RegionManager manager;
@@ -33,7 +37,7 @@ public class WorldGuardFilter extends CuboidRegionFilter {
                 BlockVector3 min = region.getMinimumPoint();
                 BlockVector3 max = region.getMaximumPoint();
                 if (max.getBlockX() - min.getBlockX() > 1024 || max.getBlockZ() - min.getBlockZ() > 1024) {
-                    getLogger(WorldGuardFilter.class).debug("Large or complex region shapes cannot be optimized. Filtering will be slower");
+                    LOGGER.debug("Large or complex region shapes cannot be optimized. Filtering will be slower");
                     large = true;
                     break;
                 }

worldedit-bukkit/src/main/java/com/boydti/fawe/bukkit/listener/ChunkListener.java

@@ -6,8 +6,10 @@ import com.boydti.fawe.config.Settings;
 import com.boydti.fawe.util.FaweTimer;
 import com.boydti.fawe.util.MathMan;
 import com.boydti.fawe.util.TaskManager;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import it.unimi.dsi.fastutil.longs.Long2ObjectMap;
 import it.unimi.dsi.fastutil.longs.Long2ObjectOpenHashMap;
+import org.apache.logging.log4j.Logger;
 import org.bukkit.Bukkit;
 import org.bukkit.Chunk;
 import org.bukkit.Location;
@@ -42,13 +44,10 @@ import org.bukkit.event.world.ChunkLoadEvent;
 import org.bukkit.plugin.Plugin;
 import org.bukkit.plugin.PluginManager;
 import org.bukkit.util.Vector;
-import org.slf4j.Logger;
-
-import static org.slf4j.LoggerFactory.getLogger;
 
 public abstract class ChunkListener implements Listener {
 
-    private final Logger logger = getLogger(ChunkListener.class);
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
     protected int rateLimit = 0;
     protected Location lastCancelPos;
     private int[] badLimit = new int[]{Settings.IMP.TICK_LIMITER.PHYSICS_MS,
@@ -62,7 +61,7 @@ public abstract class ChunkListener implements Listener {
             TaskManager.IMP.repeat(() -> {
                 Location tmpLoc = lastCancelPos;
                 if (tmpLoc != null) {
-                    logger.debug("[FAWE Tick Limiter] Detected and cancelled physics lag source at "
+                    LOGGER.debug("[FAWE Tick Limiter] Detected and cancelled physics lag source at "
                         + tmpLoc);
                 }
                 rateLimit--;
@@ -378,7 +377,7 @@ public abstract class ChunkListener implements Listener {
                             double vertical = Math.abs(velocity.getY());
                             if (Math.abs(velocity.getX()) > vertical
                                 || Math.abs(velocity.getZ()) > vertical) {
-                                logger.warn(
+                                LOGGER.warn(
                                     "[FAWE `tick-limiter`] Detected and cancelled rogue FireWork at "
                                         + ent.getLocation());
                                 ent.remove();
@@ -409,7 +408,7 @@ public abstract class ChunkListener implements Listener {
             cancelNearby(cx, cz);
             if (rateLimit <= 0) {
                 rateLimit = 20;
-                logger.warn(
+                LOGGER.warn(
                     "[FAWE `tick-limiter`] Detected and cancelled item lag source at " + loc);
             }
             event.setCancelled(true);

worldedit-bukkit/src/main/java/com/boydti/fawe/bukkit/regions/GriefPreventionFeature.java

@@ -4,23 +4,25 @@ import com.boydti.fawe.bukkit.filter.GriefPreventionFilter;
 import com.boydti.fawe.regions.FaweMask;
 import com.boydti.fawe.regions.general.RegionFilter;
 import com.sk89q.worldedit.bukkit.BukkitAdapter;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.regions.CuboidRegion;
 import me.ryanhamshire.GriefPrevention.Claim;
 import me.ryanhamshire.GriefPrevention.GriefPrevention;
+import org.apache.logging.log4j.Logger;
 import org.bukkit.Bukkit;
 import org.bukkit.Material;
 import org.bukkit.entity.Player;
 import org.bukkit.event.Listener;
 import org.bukkit.plugin.Plugin;
 
-import static org.slf4j.LoggerFactory.getLogger;
-
 public class GriefPreventionFeature extends BukkitMaskManager implements Listener {
 
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
+
     public GriefPreventionFeature(final Plugin griefpreventionPlugin) {
         super(griefpreventionPlugin.getName());
-        getLogger(GriefPreventionFeature.class).debug("Plugin 'GriefPrevention' found. Using it now.");
+        LOGGER.debug("Plugin 'GriefPrevention' found. Using it now.");
     }
 
     public boolean isAllowed(Player player, Claim claim, MaskType type) {

worldedit-bukkit/src/main/java/com/boydti/fawe/bukkit/regions/ResidenceFeature.java

@@ -6,15 +6,18 @@ import com.bekvon.bukkit.residence.protection.CuboidArea;
 import com.boydti.fawe.bukkit.FaweBukkit;
 import com.boydti.fawe.regions.FaweMask;
 import com.sk89q.worldedit.bukkit.BukkitAdapter;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.regions.CuboidRegion;
+import org.apache.logging.log4j.Logger;
 import org.bukkit.Location;
 import org.bukkit.entity.Player;
 import org.bukkit.event.Listener;
 import org.bukkit.plugin.Plugin;
 
-import static org.slf4j.LoggerFactory.getLogger;
-
 public class ResidenceFeature extends BukkitMaskManager implements Listener {
+
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
+
     private FaweBukkit plugin;
     private Plugin residence;
 
@@ -22,7 +25,7 @@ public class ResidenceFeature extends BukkitMaskManager implements Listener {
         super(residencePlugin.getName());
         this.residence = residencePlugin;
         this.plugin = p3;
-        getLogger(ResidenceFeature.class).debug("Plugin 'Residence' found. Using it now.");
+        LOGGER.debug("Plugin 'Residence' found. Using it now.");
     }
 
     public boolean isAllowed(Player player, ClaimedResidence residence, MaskType type) {

worldedit-bukkit/src/main/java/com/boydti/fawe/bukkit/regions/TownyFeature.java

@@ -10,25 +10,26 @@ import com.palmergames.bukkit.towny.object.TownBlock;
 import com.palmergames.bukkit.towny.object.TownyUniverse;
 import com.palmergames.bukkit.towny.object.WorldCoord;
 import com.sk89q.worldedit.bukkit.BukkitAdapter;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.regions.CuboidRegion;
+import org.apache.logging.log4j.Logger;
 import org.bukkit.Chunk;
 import org.bukkit.Location;
 import org.bukkit.entity.Player;
 import org.bukkit.event.Listener;
 import org.bukkit.plugin.Plugin;
 
-import static org.slf4j.LoggerFactory.getLogger;
-
 public class TownyFeature extends BukkitMaskManager implements Listener {
 
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
+
     private final Plugin towny;
 
     public TownyFeature(Plugin townyPlugin) {
         super(townyPlugin.getName());
         this.towny = townyPlugin;
-        getLogger(TownyFeature.class).debug("Plugin 'Towny' found. Using it now.");
+        LOGGER.debug("Plugin 'Towny' found. Using it now.");
-
     }
 
     public boolean isAllowed(Player player, TownBlock block) {

worldedit-bukkit/src/main/java/com/boydti/fawe/bukkit/regions/Worldguard.java

@@ -5,6 +5,7 @@ import com.boydti.fawe.object.RegionWrapper;
 import com.boydti.fawe.regions.FaweMask;
 import com.boydti.fawe.regions.general.RegionFilter;
 import com.sk89q.worldedit.bukkit.BukkitAdapter;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.regions.AbstractRegion;
 import com.sk89q.worldedit.regions.CuboidRegion;
@@ -21,20 +22,17 @@ import com.sk89q.worldguard.protection.regions.ProtectedCuboidRegion;
 import com.sk89q.worldguard.protection.regions.ProtectedPolygonalRegion;
 import com.sk89q.worldguard.protection.regions.ProtectedRegion;
 import com.sk89q.worldguard.protection.regions.RegionContainer;
+import org.apache.logging.log4j.Logger;
 import org.bukkit.Bukkit;
 import org.bukkit.Location;
 import org.bukkit.entity.Player;
 import org.bukkit.event.Listener;
 import org.bukkit.plugin.Plugin;
-import org.slf4j.Logger;
-
 import java.util.Locale;
 
-import static org.slf4j.LoggerFactory.getLogger;
-
 public class Worldguard extends BukkitMaskManager implements Listener {
     private final WorldGuardPlugin worldguard;
-    private static final Logger logger = getLogger(Worldguard.class);
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
 
     private WorldGuardPlugin getWorldGuard() {
         final Plugin plugin = Bukkit.getPluginManager().getPlugin("WorldGuard");
@@ -50,19 +48,19 @@ public class Worldguard extends BukkitMaskManager implements Listener {
     public Worldguard(Plugin p2) {
         super(p2.getName());
         this.worldguard = this.getWorldGuard();
-        logger.debug("Plugin 'WorldGuard' found. Using it now.");
+        LOGGER.debug("Plugin 'WorldGuard' found. Using it now.");
 
     }
 
     public ProtectedRegion getRegion(LocalPlayer player, Location location) {
         RegionContainer container = WorldGuard.getInstance().getPlatform().getRegionContainer();
         if (container == null) {
-            logger.info("Region capability is not enabled for WorldGuard.");
+            LOGGER.info("Region capability is not enabled for WorldGuard.");
             return null;
         }
         RegionManager manager = container.get(BukkitAdapter.adapt(location.getWorld()));
         if (manager == null) {
-            logger.info("Region capability is not enabled for that world.");
+            LOGGER.info("Region capability is not enabled for that world.");
             return null;
         }
         final ProtectedRegion global = manager.getRegion("__global__");

worldedit-bukkit/src/main/java/com/boydti/fawe/bukkit/regions/plotsquared/PlotSquaredFeature.java

@@ -18,13 +18,13 @@ import com.plotsquared.core.util.RegionManager;
 import com.plotsquared.core.util.SchematicHandler;
 import com.plotsquared.core.util.WEManager;
 import com.sk89q.worldedit.entity.Player;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.regions.CuboidRegion;
 import com.sk89q.worldedit.regions.Region;
 import com.sk89q.worldedit.regions.RegionIntersection;
 import com.sk89q.worldedit.world.World;
-import org.slf4j.Logger;
+import org.apache.logging.log4j.Logger;
-import org.slf4j.LoggerFactory;
 
 import java.util.List;
 import java.util.Locale;
@@ -34,11 +34,11 @@ import java.util.stream.Collectors;
 
 public class PlotSquaredFeature extends FaweMaskManager {
 
-    private static final Logger log = LoggerFactory.getLogger(PlotSquaredFeature.class);
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
 
     public PlotSquaredFeature() {
         super("PlotSquared");
-        log.debug("Optimizing PlotSquared");
+        LOGGER.debug("Optimizing PlotSquared");
         if (com.boydti.fawe.config.Settings.IMP.ENABLED_COMPONENTS.PLOTSQUARED_HOOK) {
             Settings.Enabled_Components.WORLDEDIT_RESTRICTIONS = false;
             try {
@@ -46,7 +46,7 @@ public class PlotSquaredFeature extends FaweMaskManager {
                 setupSchematicHandler();
                 setupRegionManager();
             } catch (Throwable ignored) {
-                log.debug("Please update PlotSquared: https://www.spigotmc.org/resources/plotsquared-v5.77506/");
+                LOGGER.debug("Please update PlotSquared: https://www.spigotmc.org/resources/77506/");
             }
             if (Settings.PLATFORM.toLowerCase(Locale.ROOT).startsWith("bukkit")) {
                 new FaweTrim();
@@ -82,12 +82,12 @@ public class PlotSquaredFeature extends FaweMaskManager {
 
     private void setupRegionManager() throws RuntimeException {
         RegionManager.manager = new FaweRegionManager(RegionManager.manager);
-        log.debug(" - RegionManager: " + RegionManager.manager);
+        LOGGER.debug(" - RegionManager: " + RegionManager.manager);
     }
 
     private void setupSchematicHandler() throws RuntimeException {
         SchematicHandler.manager = new FaweSchematicHandler();
-        log.debug(" - SchematicHandler: " + SchematicHandler.manager);
+        LOGGER.debug(" - SchematicHandler: " + SchematicHandler.manager);
     }
 
     public boolean isAllowed(Player player, Plot plot, MaskType type) {

worldedit-bukkit/src/main/java/com/boydti/fawe/bukkit/regions/plotsquaredv4/PlotSquaredFeature.java

@@ -18,13 +18,13 @@ import com.github.intellectualsites.plotsquared.plot.util.ChunkManager;
 import com.github.intellectualsites.plotsquared.plot.util.SchematicHandler;
 import com.github.intellectualsites.plotsquared.plot.util.UUIDHandler;
 import com.sk89q.worldedit.entity.Player;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.regions.CuboidRegion;
 import com.sk89q.worldedit.regions.Region;
 import com.sk89q.worldedit.regions.RegionIntersection;
 import com.sk89q.worldedit.world.World;
-import org.slf4j.Logger;
+import org.apache.logging.log4j.Logger;
-import org.slf4j.LoggerFactory;
 
 import java.util.HashSet;
 import java.util.List;
@@ -35,11 +35,11 @@ import java.util.stream.Collectors;
 
 public class PlotSquaredFeature extends FaweMaskManager {
 
-    private static final Logger log = LoggerFactory.getLogger(PlotSquaredFeature.class);
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
 
     public PlotSquaredFeature() {
         super("PlotSquared");
-        log.debug("Optimizing PlotSquared");
+        LOGGER.debug("Optimizing PlotSquared");
         if (com.boydti.fawe.config.Settings.IMP.ENABLED_COMPONENTS.PLOTSQUARED_HOOK) {
             Settings.Enabled_Components.WORLDEDIT_RESTRICTIONS = false;
             try {
@@ -47,7 +47,7 @@ public class PlotSquaredFeature extends FaweMaskManager {
                 setupSchematicHandler();
                 setupChunkManager();
             } catch (Throwable ignored) {
-                log.debug("Please update PlotSquared: https://www.spigotmc.org/resources/77506/");
+                LOGGER.debug("Please update PlotSquared: https://www.spigotmc.org/resources/77506/");
             }
             if (Settings.PLATFORM.toLowerCase(Locale.ROOT).startsWith("bukkit")) {
                 new FaweTrim();
@@ -83,12 +83,12 @@ public class PlotSquaredFeature extends FaweMaskManager {
 
     private void setupChunkManager() throws RuntimeException {
         ChunkManager.manager = new FaweChunkManager(ChunkManager.manager);
-        log.debug(" - ChunkManager: " + ChunkManager.manager);
+        LOGGER.debug(" - ChunkManager: " + ChunkManager.manager);
     }
 
     private void setupSchematicHandler() throws RuntimeException {
         SchematicHandler.manager = new FaweSchematicHandler();
-        log.debug(" - SchematicHandler: " + SchematicHandler.manager);
+        LOGGER.debug(" - SchematicHandler: " + SchematicHandler.manager);
     }
 
     public boolean isAllowed(Player player, Plot plot, MaskType type) {

worldedit-bukkit/src/main/java/com/boydti/fawe/bukkit/util/JavaVersionCheck.java

@@ -1,20 +1,20 @@
 package com.boydti.fawe.bukkit.util;
 
-import org.slf4j.Logger;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
-import org.slf4j.LoggerFactory;
+import org.apache.logging.log4j.Logger;
 
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
 public class JavaVersionCheck {
 
-    public static final Logger logger = LoggerFactory.getLogger(JavaVersionCheck.class);
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
 
     private static int checkJavaVersion() {
         String javaVersion = System.getProperty("java.version");
         final Matcher matcher = Pattern.compile("(?:1\\.)?(\\d+)").matcher(javaVersion);
         if (!matcher.find()) {
-            logger.warn("Failed to determine Java version; Could not parse: {}", javaVersion);
+            LOGGER.warn("Failed to determine Java version; Could not parse: {}", javaVersion);
             return -1;
         }
 
@@ -22,32 +22,32 @@ public class JavaVersionCheck {
         try {
             return Integer.parseInt(version);
         } catch (final NumberFormatException e) {
-            logger.warn("Failed to determine Java version; Could not parse {} from {}", version, javaVersion, e);
+            LOGGER.warn("Failed to determine Java version; Could not parse {} from {}", version, javaVersion, e);
             return -1;
         }
     }
 
     public static void checkJvm() {
         if (checkJavaVersion() < 11) {
-            logger.warn("************************************************************");
+            LOGGER.warn("************************************************************");
-            logger.warn("* WARNING - YOU ARE RUNNING AN OUTDATED VERSION OF JAVA.");
+            LOGGER.warn("* WARNING - YOU ARE RUNNING AN OUTDATED VERSION OF JAVA.");
-            logger.warn("* FASTASYNCWORLDEDIT WILL STOP BEING COMPATIBLE WITH THIS VERSION OF");
+            LOGGER.warn("* FASTASYNCWORLDEDIT WILL STOP BEING COMPATIBLE WITH THIS VERSION OF");
-            logger.warn("* JAVA WHEN MINECRAFT 1.17 IS RELEASED.");
+            LOGGER.warn("* JAVA WHEN MINECRAFT 1.17 IS RELEASED.");
-            logger.warn("*");
+            LOGGER.warn("*");
-            logger.warn("* Please update the version of Java to 11. When Minecraft 1.17");
+            LOGGER.warn("* Please update the version of Java to 11. When Minecraft 1.17");
-            logger.warn("* is released, support for versions of Java prior to 11 will");
+            LOGGER.warn("* is released, support for versions of Java prior to 11 will");
-            logger.warn("* be dropped.");
+            LOGGER.warn("* be dropped.");
-            logger.warn("*");
+            LOGGER.warn("*");
-            logger.warn("* Current Java version: {}", System.getProperty("java.version"));
+            LOGGER.warn("* Current Java version: {}", System.getProperty("java.version"));
-            logger.warn("************************************************************");
+            LOGGER.warn("************************************************************");
         }
         if (checkJavaVersion() >= 15) {
-            logger.warn("************************************************************");
+            LOGGER.warn("************************************************************");
-            logger.warn("* FastAsyncWorldEdit uses Nashorn for the craftscript engine.");
+            LOGGER.warn("* FastAsyncWorldEdit uses Nashorn for the craftscript engine.");
-            logger.warn("* Within Java 15, Nashorn has been removed from Java.");
+            LOGGER.warn("* Within Java 15, Nashorn has been removed from Java.");
-            logger.warn("* Until we add a suitable workaround, you should stick to Java 11");
+            LOGGER.warn("* Until we add a suitable workaround, you should stick to Java 11");
-            logger.warn("* to use all features of FastAsyncWorldEdit.");
+            LOGGER.warn("* to use all features of FastAsyncWorldEdit.");
-            logger.warn("************************************************************");
+            LOGGER.warn("************************************************************");
         }
     }
 }

worldedit-bukkit/src/main/java/com/sk89q/wepif/FlatFilePermissionsResolver.java

@@ -22,9 +22,8 @@ package com.sk89q.wepif;
 import com.sk89q.util.yaml.YAMLProcessor;
 import org.bukkit.OfflinePlayer;
 import org.bukkit.Server;
-import org.slf4j.Logger;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
-import org.slf4j.LoggerFactory;
+import org.apache.logging.log4j.Logger;
-
 import java.io.BufferedReader;
 import java.io.File;
 import java.io.FileReader;
@@ -38,7 +37,7 @@ import java.util.Set;
 
 public class FlatFilePermissionsResolver implements PermissionsResolver {
 
-    private static final Logger log = LoggerFactory.getLogger(FlatFilePermissionsResolver.class);
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
 
     private Map<String, Set<String>> userPermissionsCache;
     private Set<String> defaultPermissionsCache;
@@ -99,7 +98,7 @@ public class FlatFilePermissionsResolver implements PermissionsResolver {
                 }
             }
         } catch (IOException e) {
-            log.warn("Failed to load permissions", e);
+            LOGGER.warn("Failed to load permissions", e);
         } finally {
             try {
                 if (buff != null) {
@@ -165,7 +164,7 @@ public class FlatFilePermissionsResolver implements PermissionsResolver {
                 }
             }
         } catch (IOException e) {
-            log.warn("Failed to load permissions", e);
+            LOGGER.warn("Failed to load permissions", e);
         } finally {
             try {
                 if (buff != null) {

worldedit-bukkit/src/main/java/com/sk89q/wepif/NijiPermissionsResolver.java

@@ -21,6 +21,8 @@ package com.sk89q.wepif;
 
 import com.nijikokun.bukkit.Permissions.Permissions;
 import com.sk89q.util.yaml.YAMLProcessor;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
+import org.apache.logging.log4j.Logger;
 import org.bukkit.Bukkit;
 import org.bukkit.OfflinePlayer;
 import org.bukkit.Server;
@@ -28,12 +30,10 @@ import org.bukkit.command.PluginCommand;
 import org.bukkit.entity.Player;
 import org.bukkit.plugin.Plugin;
 import org.bukkit.plugin.PluginManager;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
 public class NijiPermissionsResolver implements PermissionsResolver {
 
-    private static final Logger log = LoggerFactory.getLogger(NijiPermissionsResolver.class);
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
 
     private final Server server;
     private final Permissions api;
@@ -85,7 +85,7 @@ public class NijiPermissionsResolver implements PermissionsResolver {
                 return api.Security.permission(player, permission);
             }
         } catch (Throwable t) {
-            log.warn("Failed to check permissions", t);
+            LOGGER.warn("Failed to check permissions", t);
             return false;
         }
     }
@@ -99,7 +99,7 @@ public class NijiPermissionsResolver implements PermissionsResolver {
                 return api.getHandler().has(server.getPlayerExact(name), permission);
             }
         } catch (Throwable t) {
-            log.warn("Failed to check permissions", t);
+            LOGGER.warn("Failed to check permissions", t);
             return false;
         }
     }
@@ -118,7 +118,7 @@ public class NijiPermissionsResolver implements PermissionsResolver {
                 return api.Security.inGroup(name, group);
             }
         } catch (Throwable t) {
-            log.warn("Failed to check groups", t);
+            LOGGER.warn("Failed to check groups", t);
             return false;
         }
     }
@@ -137,7 +137,7 @@ public class NijiPermissionsResolver implements PermissionsResolver {
             } catch (Throwable t) {
                 String group = api.Security.getGroup(player.getWorld().getName(), player.getName());
                 if (group != null) {
-                    groups = new String[] { group };
+                    groups = new String[]{group};
                 }
             }
             if (groups == null) {
@@ -146,7 +146,7 @@ public class NijiPermissionsResolver implements PermissionsResolver {
                 return groups;
             }
         } catch (Throwable t) {
-            log.warn("Failed to get groups", t);
+            LOGGER.warn("Failed to get groups", t);
             return new String[0];
         }
     }

worldedit-bukkit/src/main/java/com/sk89q/wepif/PermissionsResolverManager.java

@@ -21,14 +21,14 @@ package com.sk89q.wepif;
 
 import com.sk89q.util.yaml.YAMLFormat;
 import com.sk89q.util.yaml.YAMLProcessor;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
+import org.apache.logging.log4j.Logger;
 import org.bukkit.OfflinePlayer;
 import org.bukkit.Server;
 import org.bukkit.event.EventHandler;
 import org.bukkit.event.server.PluginDisableEvent;
 import org.bukkit.event.server.PluginEnableEvent;
 import org.bukkit.plugin.Plugin;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
 import java.io.File;
 import java.io.IOException;
@@ -59,6 +59,8 @@ public class PermissionsResolverManager implements PermissionsResolver {
         + "# - Lines starting with # are comments and so they are ignored.\r\n"
         + "\r\n";
 
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
+
     private static PermissionsResolverManager instance;
 
     public static void initialize(Plugin plugin) {
@@ -81,7 +83,6 @@ public class PermissionsResolverManager implements PermissionsResolver {
     private final Server server;
     private PermissionsResolver permissionResolver;
     private YAMLProcessor config;
-    private final Logger logger = LoggerFactory.getLogger(getClass());
     private final List<Class<? extends PermissionsResolver>> enabledResolvers = new ArrayList<>();
 
     @SuppressWarnings("unchecked")
@@ -115,7 +116,7 @@ public class PermissionsResolverManager implements PermissionsResolver {
                     break;
                 }
             } catch (Throwable e) {
-                logger.warn("Error in factory method for " + resolverClass.getSimpleName(), e);
+                LOGGER.warn("Error in factory method for " + resolverClass.getSimpleName(), e);
                 continue;
             }
         }
@@ -123,7 +124,7 @@ public class PermissionsResolverManager implements PermissionsResolver {
             permissionResolver = new ConfigurationPermissionsResolver(config);
         }
         permissionResolver.load();
-        logger.info("WEPIF: " + permissionResolver.getDetectionMessage());
+        LOGGER.info("WEPIF: " + permissionResolver.getDetectionMessage());
     }
 
     public void setPluginPermissionsResolver(Plugin plugin) {
@@ -132,7 +133,7 @@ public class PermissionsResolverManager implements PermissionsResolver {
         }
 
         permissionResolver = new PluginPermissionsResolver((PermissionsProvider) plugin, plugin);
-        logger.info("WEPIF: " + permissionResolver.getDetectionMessage());
+        LOGGER.info("WEPIF: " + permissionResolver.getDetectionMessage());
     }
 
     @Override
@@ -191,14 +192,14 @@ public class PermissionsResolverManager implements PermissionsResolver {
             try {
                 file.createNewFile();
             } catch (IOException e) {
-                logger.warn("Failed to create new configuration file", e);
+                LOGGER.warn("Failed to create new configuration file", e);
             }
         }
         config = new YAMLProcessor(file, false, YAMLFormat.EXTENDED);
         try {
             config.load();
         } catch (IOException e) {
-            logger.warn("Error loading WEPIF configuration", e);
+            LOGGER.warn("Error loading WEPIF configuration", e);
         }
         List<String> keys = config.getKeys(null);
         config.setHeader(CONFIG_HEADER);
@@ -229,7 +230,7 @@ public class PermissionsResolverManager implements PermissionsResolver {
                 }
 
                 if (next == null || !PermissionsResolver.class.isAssignableFrom(next)) {
-                    logger.warn("WEPIF: Invalid or unknown class found in enabled resolvers: "
+                    LOGGER.warn("WEPIF: Invalid or unknown class found in enabled resolvers: "
                             + nextName + ". Moving to disabled resolvers list.");
                     i.remove();
                     disabledResolvers.add(nextName);
@@ -243,7 +244,7 @@ public class PermissionsResolverManager implements PermissionsResolver {
                 if (!stagedEnabled.contains(clazz.getSimpleName())
                     && !disabledResolvers.contains(clazz.getSimpleName())) {
                     disabledResolvers.add(clazz.getSimpleName());
-                    logger.info("New permissions resolver: "
+                    LOGGER.info("New permissions resolver: "
                         + clazz.getSimpleName() + " detected. "
                         + "Added to disabled resolvers list.");
                     isUpdated = true;
@@ -264,7 +265,7 @@ public class PermissionsResolverManager implements PermissionsResolver {
             isUpdated = true;
         }
         if (isUpdated) {
-            logger.info("WEPIF: Updated config file");
+            LOGGER.info("WEPIF: Updated config file");
             config.save();
         }
         return isUpdated;

worldedit-bukkit/src/main/java/com/sk89q/worldedit/bukkit/BukkitCommandInspector.java

@@ -22,14 +22,14 @@ package com.sk89q.worldedit.bukkit;
 import com.sk89q.bukkit.util.CommandInspector;
 import com.sk89q.worldedit.WorldEdit;
 import com.sk89q.worldedit.extension.platform.Actor;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
+import org.apache.logging.log4j.Logger;
 import org.bukkit.command.Command;
 import org.bukkit.command.CommandSender;
 import org.enginehub.piston.CommandManager;
 import org.enginehub.piston.inject.InjectedValueStore;
 import org.enginehub.piston.inject.Key;
 import org.enginehub.piston.inject.MapBackedValueStore;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
 import java.util.Optional;
 
@@ -38,7 +38,7 @@ import static com.sk89q.worldedit.util.formatting.WorldEditText.reduceToText;
 
 class BukkitCommandInspector implements CommandInspector {
 
-    private static final Logger logger = LoggerFactory.getLogger(BukkitCommandInspector.class);
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
     private final WorldEditPlugin plugin;
     private final CommandManager dispatcher;
 
@@ -55,7 +55,7 @@ class BukkitCommandInspector implements CommandInspector {
         if (mapping.isPresent()) {
             return reduceToText(mapping.get().getDescription(), WorldEdit.getInstance().getConfiguration().defaultLocale);
         } else {
-            logger.warn("BukkitCommandInspector doesn't know how about the command '" + command + "'");
+            LOGGER.warn("BukkitCommandInspector doesn't know how about the command '" + command + "'");
             return "Help text not available";
         }
     }
@@ -66,7 +66,7 @@ class BukkitCommandInspector implements CommandInspector {
         if (mapping.isPresent()) {
             return reduceToText(mapping.get().getFullHelp(), WorldEdit.getInstance().getConfiguration().defaultLocale);
         } else {
-            logger.warn("BukkitCommandInspector doesn't know how about the command '" + command + "'");
+            LOGGER.warn("BukkitCommandInspector doesn't know how about the command '" + command + "'");
             return "Help text not available";
         }
     }
@@ -80,7 +80,7 @@ class BukkitCommandInspector implements CommandInspector {
                 Optional.of(plugin.wrapCommandSender(sender)));
             return mapping.get().getCondition().satisfied(store);
         } else {
-            logger.warn("BukkitCommandInspector doesn't know how about the command '" + command + "'");
+            LOGGER.warn("BukkitCommandInspector doesn't know how about the command '" + command + "'");
             return false;
         }
     }

worldedit-bukkit/src/main/java/com/sk89q/worldedit/bukkit/BukkitConfiguration.java

@@ -20,9 +20,11 @@
 package com.sk89q.worldedit.bukkit;
 
 import com.sk89q.util.yaml.YAMLProcessor;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.util.YAMLConfiguration;
 import com.sk89q.worldedit.util.report.Unreported;
-import org.slf4j.LoggerFactory;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
 
 import java.io.File;
 import java.nio.file.Path;
@@ -32,12 +34,14 @@ import java.nio.file.Path;
  */
 public class BukkitConfiguration extends YAMLConfiguration {
 
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
+
     public boolean noOpPermissions = false;
     public boolean commandBlockSupport = false;
     @Unreported private final WorldEditPlugin plugin;
 
     public BukkitConfiguration(YAMLProcessor config, WorldEditPlugin plugin) {
-        super(config, LoggerFactory.getLogger(plugin.getLogger().getName()));
+        super(config, LogManager.getLogger(plugin.getLogger().getName()));
         this.plugin = plugin;
     }
 
@@ -60,10 +64,10 @@ public class BukkitConfiguration extends YAMLConfiguration {
         File toDir = new File(getWorkingDirectory(), file);
         if (fromDir.exists() & !toDir.exists()) {
             if (fromDir.renameTo(toDir)) {
-                plugin.getLogger().info("Migrated " + name + " folder '" + file
+                LOGGER.info("Migrated " + name + " folder '" + file
-                    + "' from server root to plugin data folder.");
+                        + "' from server root to plugin data folder.");
             } else {
-                plugin.getLogger().warning("Error while migrating " + name + " folder!");
+                LOGGER.warn("Error while migrating " + name + " folder!");
             }
         }
     }

worldedit-bukkit/src/main/java/com/sk89q/worldedit/bukkit/BukkitWorld.java

@@ -26,13 +26,13 @@ import com.google.common.collect.ImmutableSet;
 import com.google.common.collect.Sets;
 import com.sk89q.jnbt.CompoundTag;
 import com.sk89q.worldedit.EditSession;
-import com.sk89q.worldedit.WorldEdit;
 import com.sk89q.worldedit.WorldEditException;
 import com.sk89q.worldedit.blocks.BaseItem;
 import com.sk89q.worldedit.blocks.BaseItemStack;
 import com.sk89q.worldedit.bukkit.adapter.BukkitImplAdapter;
 import com.sk89q.worldedit.entity.Player;
 import com.sk89q.worldedit.extent.Extent;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.internal.wna.WorldNativeAccess;
 import com.sk89q.worldedit.math.BlockVector2;
 import com.sk89q.worldedit.math.BlockVector3;
@@ -50,6 +50,7 @@ import com.sk89q.worldedit.world.block.BlockStateHolder;
 import com.sk89q.worldedit.world.weather.WeatherType;
 import com.sk89q.worldedit.world.weather.WeatherTypes;
 import io.papermc.lib.PaperLib;
+import org.apache.logging.log4j.Logger;
 import org.bukkit.Bukkit;
 import org.bukkit.Effect;
 import org.bukkit.TreeType;
@@ -61,7 +62,6 @@ import org.bukkit.entity.Entity;
 import org.bukkit.inventory.DoubleChestInventory;
 import org.bukkit.inventory.Inventory;
 import org.bukkit.inventory.InventoryHolder;
-import org.slf4j.Logger;
 
 import java.lang.ref.WeakReference;
 import java.nio.file.Path;
@@ -77,7 +77,7 @@ import static com.google.common.base.Preconditions.checkNotNull;
 
 public class BukkitWorld extends AbstractWorld {
 
-    private static final Logger logger = WorldEdit.logger;
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
 
     private static final boolean HAS_3D_BIOMES;
 
@@ -213,7 +213,7 @@ public class BukkitWorld extends AbstractWorld {
                 throw new UnsupportedOperationException("Missing BukkitImplAdapater for this version.");
             }
         } catch (Exception e) {
-            logger.warn("Regeneration via adapter failed.", e);
+            LOGGER.warn("Regeneration via adapter failed.", e);
             return false;
         }
     }
@@ -292,9 +292,9 @@ public class BukkitWorld extends AbstractWorld {
         treeTypeMapping.put(TreeGenerator.TreeType.RANDOM_MUSHROOM, TreeType.BROWN_MUSHROOM);
         for (TreeGenerator.TreeType type : TreeGenerator.TreeType.values()) {
             if (treeTypeMapping.get(type) == null) {
-                WorldEdit.logger.error("No TreeType mapping for TreeGenerator.TreeType." + type);
+                LOGGER.error("No TreeType mapping for TreeGenerator.TreeType." + type);
                 // FAWE start
-                WorldEdit.logger.warn("Your FAWE version is newer than " + Bukkit.getVersion() + " and contains features of future minecraft versions which do not exist in " + Bukkit.getVersion() + ", hence the tree type " + type + " is not available.");
+                LOGGER.warn("Your FAWE version is newer than " + Bukkit.getVersion() + " and contains features of future minecraft versions which do not exist in " + Bukkit.getVersion() + ", hence the tree type " + type + " is not available.");
                 // FAWE end
             }
         }
@@ -449,7 +449,7 @@ public class BukkitWorld extends AbstractWorld {
             } catch (Exception e) {
                 if (!hasWarnedImplError) {
                     hasWarnedImplError = true;
-                    logger.warn("Unable to retrieve block via impl adapter", e);
+                    LOGGER.warn("Unable to retrieve block via impl adapter", e);
                 }
             }
         }
@@ -464,10 +464,10 @@ public class BukkitWorld extends AbstractWorld {
                 return worldNativeAccess.setBlock(position, block, sideEffects);
             } catch (Exception e) {
                 if (block instanceof BaseBlock && ((BaseBlock) block).getNbtData() != null) {
-                    logger.warn("Tried to set a corrupt tile entity at " + position.toString()
+                    LOGGER.warn("Tried to set a corrupt tile entity at " + position.toString()
                         + ": " + ((BaseBlock) block).getNbtData(), e);
                 } else {
-                    logger.warn("Failed to set block via adapter, falling back to generic", e);
+                    LOGGER.warn("Failed to set block via adapter, falling back to generic", e);
                 }
             }
         }

worldedit-bukkit/src/main/java/com/sk89q/worldedit/bukkit/WorldEditPlugin.java

@@ -43,6 +43,7 @@ import com.sk89q.worldedit.extension.platform.Platform;
 import com.sk89q.worldedit.extent.inventory.BlockBag;
 import com.sk89q.worldedit.internal.anvil.ChunkDeleter;
 import com.sk89q.worldedit.internal.command.CommandUtil;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.world.biome.BiomeType;
 import com.sk89q.worldedit.world.block.BlockCategory;
 import com.sk89q.worldedit.world.entity.EntityType;
@@ -51,6 +52,7 @@ import com.sk89q.worldedit.world.item.ItemCategory;
 import com.sk89q.worldedit.world.weather.WeatherTypes;
 import de.notmyfault.serverlib.ServerLib;
 import io.papermc.lib.PaperLib;
+import org.apache.logging.log4j.Logger;
 import org.bstats.bukkit.Metrics;
 import org.bukkit.Bukkit;
 import org.bukkit.Material;
@@ -68,8 +70,6 @@ import org.bukkit.metadata.FixedMetadataValue;
 import org.bukkit.metadata.MetadataValue;
 import org.bukkit.plugin.java.JavaPlugin;
 import org.jetbrains.annotations.Nullable;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
 import java.io.File;
 import java.io.FileNotFoundException;
@@ -93,7 +93,7 @@ import static com.sk89q.worldedit.internal.anvil.ChunkDeleter.DELCHUNKS_FILE_NAM
  */
 public class WorldEditPlugin extends JavaPlugin { //implements TabCompleter
 
-    private static final Logger log = LoggerFactory.getLogger(WorldEditPlugin.class);
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
     public static final String CUI_PLUGIN_CHANNEL = "worldedit:cui";
     private static WorldEditPlugin INSTANCE;
 
@@ -129,7 +129,7 @@ public class WorldEditPlugin extends JavaPlugin { //implements TabCompleter
             }
             return false;
         }).length > 0) {
-            getLogger().warning("DummyFawe detected and automatically deleted! This file is no longer necessary.");
+            LOGGER.warn("DummyFawe detected and automatically deleted! This file is no longer necessary.");
         }
     }
 
@@ -162,8 +162,8 @@ public class WorldEditPlugin extends JavaPlugin { //implements TabCompleter
             // register this so we can load world-dependent data right as the first world is loading
             getServer().getPluginManager().registerEvents(new WorldInitListener(), this);
         } else {
-            getLogger().warning("Server reload detected. This may cause various issues with FastAsyncWorldEdit and dependent plugins.");
+            LOGGER.warn("Server reload detected. This may cause various issues with FastAsyncWorldEdit and dependent plugins.");
-            getLogger().warning("For more information, see https://matthewmiller.dev/blog/problem-with-reload/");
+            LOGGER.warn("For more information, see https://matthewmiller.dev/blog/problem-with-reload/");
             try {
                 setupPreWorldData();
                 // since worlds are loaded already, we can do this now
@@ -226,7 +226,7 @@ public class WorldEditPlugin extends JavaPlugin { //implements TabCompleter
                         }
                         return defaultState;
                     } catch (InputParseException e) {
-                        getLogger().log(Level.WARNING, "Error loading block state for " + material.getKey(), e);
+                        LOGGER.warn("Error loading block state for " + material.getKey(), e);
                         return blockState;
                     }
                 }));
@@ -260,7 +260,7 @@ public class WorldEditPlugin extends JavaPlugin { //implements TabCompleter
                 ItemCategory.REGISTRY.register(itemTag.getKey().toString(), new ItemCategory(itemTag.getKey().toString()));
             }
         } catch (NoSuchMethodError ignored) {
-            getLogger().warning("The version of Spigot/Paper you are using doesn't support Tags. The usage of tags with WorldEdit will not work until you update.");
+            LOGGER.warn("The version of Spigot/Paper you are using doesn't support Tags. The usage of tags with WorldEdit will not work until you update.");
         }
     }
 
@@ -301,23 +301,23 @@ public class WorldEditPlugin extends JavaPlugin { //implements TabCompleter
         try {
             adapterLoader.addFromPath(getClass().getClassLoader());
         } catch (IOException e) {
-            log.warn("Failed to search path for Bukkit adapters");
+            LOGGER.warn("Failed to search path for Bukkit adapters");
         }
 
         try {
             adapterLoader.addFromJar(getFile());
         } catch (IOException e) {
-            log.warn("Failed to search " + getFile() + " for Bukkit adapters", e);
+            LOGGER.warn("Failed to search " + getFile() + " for Bukkit adapters", e);
         }
         try {
             bukkitAdapter = adapterLoader.loadAdapter();
-            log.info("Using " + bukkitAdapter.getClass().getCanonicalName() + " as the Bukkit adapter");
+            LOGGER.info("Using " + bukkitAdapter.getClass().getCanonicalName() + " as the Bukkit adapter");
         } catch (AdapterLoadException e) {
             Platform platform = worldEdit.getPlatformManager().queryCapability(Capability.WORLD_EDITING);
             if (platform instanceof BukkitServerInterface) {
-                log.warn(e.getMessage());
+                LOGGER.warn(e.getMessage());
             } else {
-                log.info("WorldEdit could not find a Bukkit adapter for this MC version, "
+                LOGGER.info("WorldEdit could not find a Bukkit adapter for this MC version, "
                              + "but it seems that you have another implementation of WorldEdit installed (" + platform.getPlatformName() + ") "
                              + "that handles the world editing.");
             }
@@ -365,7 +365,7 @@ public class WorldEditPlugin extends JavaPlugin { //implements TabCompleter
                 }
                 copyDefaultConfig(stream, actual, name);
             } catch (IOException e) {
-                getLogger().severe("Unable to read default configuration: " + name);
+                LOGGER.error("Unable to read default configuration: " + name);
             }
         }
     }
@@ -378,9 +378,9 @@ public class WorldEditPlugin extends JavaPlugin { //implements TabCompleter
                 output.write(buf, 0, length);
             }
 
-            getLogger().info("Default configuration file written: " + name);
+            LOGGER.info("Default configuration file written: " + name);
         } catch (IOException e) {
-            getLogger().log(Level.WARNING, "Failed to write default config file", e);
+            LOGGER.warn("Failed to write default config file", e);
         }
     }
 

worldedit-bukkit/src/main/java/com/sk89q/worldedit/bukkit/adapter/BukkitImplLoader.java

@@ -19,9 +19,9 @@
 
 package com.sk89q.worldedit.bukkit.adapter;
 
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.util.io.Closer;
-import org.slf4j.Logger;
+import org.apache.logging.log4j.Logger;
-import org.slf4j.LoggerFactory;
 
 import java.io.File;
 import java.io.IOException;
@@ -37,7 +37,7 @@ import java.util.jar.JarFile;
  */
 public class BukkitImplLoader {
 
-    private static final Logger log = LoggerFactory.getLogger(BukkitImplLoader.class);
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
     private final List<String> adapterCandidates = new ArrayList<>();
     private String customCandidate;
 
@@ -72,7 +72,7 @@ public class BukkitImplLoader {
         if (className != null) {
             customCandidate = className;
             adapterCandidates.add(className);
-            log.info("-Dworldedit.bukkit.adapter used to add " + className + " to the list of available Bukkit adapters");
+            LOGGER.info("-Dworldedit.bukkit.adapter used to add " + className + " to the list of available Bukkit adapters");
         }
     }
 
@@ -165,14 +165,14 @@ public class BukkitImplLoader {
                     return (BukkitImplAdapter) cls.newInstance();
                 }
             } catch (ClassNotFoundException e) {
-                log.warn("Failed to load the Bukkit adapter class '" + className
+                LOGGER.warn("Failed to load the Bukkit adapter class '" + className
                     + "' that is not supposed to be missing", e);
             } catch (IllegalAccessException e) {
-                log.warn("Failed to load the Bukkit adapter class '" + className
+                LOGGER.warn("Failed to load the Bukkit adapter class '" + className
                     + "' that is not supposed to be raising this error", e);
             } catch (Throwable e) {
                 if (className.equals(customCandidate)) {
-                    log.warn("Failed to load the Bukkit adapter class '" + className + "'", e);
+                    LOGGER.warn("Failed to load the Bukkit adapter class '" + className + "'", e);
                 }
             }
         }

worldedit-bukkit/src/main/java/com/sk89q/worldedit/bukkit/adapter/Regenerator.java

@@ -6,6 +6,7 @@ import com.boydti.fawe.beta.implementation.queue.SingleThreadQueueExtent;
 import com.boydti.fawe.config.Settings;
 import com.boydti.fawe.util.MathMan;
 import com.sk89q.worldedit.extent.Extent;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.math.BlockVector2;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.regions.CuboidRegion;
@@ -28,9 +29,9 @@ import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
 import java.util.concurrent.Future;
 import java.util.stream.Collectors;
+
+import org.apache.logging.log4j.Logger;
 import org.bukkit.generator.BlockPopulator;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
 /**
  * Represents an abstract regeneration handler.
@@ -41,7 +42,7 @@ import org.slf4j.LoggerFactory;
  */
 public abstract class Regenerator<IChunkAccess, ProtoChunk extends IChunkAccess, Chunk extends IChunkAccess, ChunkStatus extends Regenerator.ChunkStatusWrapper<IChunkAccess>> {
 
-    public static final Logger logger = LoggerFactory.getLogger(Regenerator.class);
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
     
     protected final org.bukkit.World originalBukkitWorld;
     protected final Region region;
@@ -492,7 +493,7 @@ public abstract class Regenerator<IChunkAccess, ProtoChunk extends IChunkAccess,
             try {
                 processChunk(xz, accessibleChunks);
             } catch (Exception e) {
-                logger.error("Error while running " + name() + " on chunk " + MathMan.unpairIntX(xz) + "/" + MathMan.unpairIntY(xz), e);
+                LOGGER.error("Error while running " + name() + " on chunk " + MathMan.unpairIntX(xz) + "/" + MathMan.unpairIntY(xz), e);
             }
         }
     }

worldedit-bukkit/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/FAWE_Spigot_v1_15_R2.java

@@ -42,6 +42,7 @@ import com.sk89q.worldedit.bukkit.adapter.impl.regen.Regen_v1_15_R2;
 import com.sk89q.worldedit.entity.BaseEntity;
 import com.sk89q.worldedit.entity.LazyBaseEntity;
 import com.sk89q.worldedit.extent.Extent;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.internal.wna.WorldNativeAccess;
 import com.sk89q.worldedit.regions.Region;
 import com.sk89q.worldedit.registry.state.Property;
@@ -80,6 +81,7 @@ import net.minecraft.server.v1_15_R1.PlayerChunk;
 import net.minecraft.server.v1_15_R1.TileEntity;
 import net.minecraft.server.v1_15_R1.World;
 import net.minecraft.server.v1_15_R1.WorldServer;
+import org.apache.logging.log4j.Logger;
 import org.bukkit.Bukkit;
 import org.bukkit.Location;
 import org.bukkit.block.data.BlockData;
@@ -101,9 +103,10 @@ import java.util.Set;
 import java.util.function.Supplier;
 import java.util.stream.Stream;
 
-import static org.slf4j.LoggerFactory.getLogger;
-
 public final class FAWE_Spigot_v1_15_R2 extends CachedBukkitAdapter implements IDelegateBukkitImplAdapter<NBTBase> {
+
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
+
     private final Spigot_v1_15_R2 parent;
     private char[] ibdToStateOrdinal;
     private int[] ordinalToIbdID;
@@ -343,9 +346,8 @@ public final class FAWE_Spigot_v1_15_R2 extends CachedBukkitAdapter implements I
                 init();
                 return adaptToChar(ibd);
             } catch (ArrayIndexOutOfBoundsException e1) {
-                getLogger(FAWE_Spigot_v1_15_R2.class)
+                LOGGER.error("Attempted to convert {} with ID {} to char. ibdToStateOrdinal length: {}. Defaulting to air!",
-                    .error("Attempted to convert {} with ID {} to char. ibdToStateOrdinal length: {}. Defaulting to air!",
+                        ibd.getBlock(), Block.REGISTRY_ID.getId(ibd), ibdToStateOrdinal.length, e1);
-                           ibd.getBlock(), Block.REGISTRY_ID.getId(ibd), ibdToStateOrdinal.length, e1);
                 return 0;
             }
         }

worldedit-bukkit/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/FAWE_Spigot_v1_16_R1.java

@@ -42,6 +42,7 @@ import com.sk89q.worldedit.bukkit.adapter.impl.regen.Regen_v1_16_R1;
 import com.sk89q.worldedit.entity.BaseEntity;
 import com.sk89q.worldedit.entity.LazyBaseEntity;
 import com.sk89q.worldedit.extent.Extent;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.internal.wna.WorldNativeAccess;
 import com.sk89q.worldedit.regions.Region;
 import com.sk89q.worldedit.registry.state.Property;
@@ -80,6 +81,7 @@ import net.minecraft.server.v1_16_R1.PlayerChunk;
 import net.minecraft.server.v1_16_R1.TileEntity;
 import net.minecraft.server.v1_16_R1.World;
 import net.minecraft.server.v1_16_R1.WorldServer;
+import org.apache.logging.log4j.Logger;
 import org.bukkit.Bukkit;
 import org.bukkit.Location;
 import org.bukkit.block.data.BlockData;
@@ -101,9 +103,10 @@ import java.util.Set;
 import java.util.function.Supplier;
 import java.util.stream.Stream;
 
-import static org.slf4j.LoggerFactory.getLogger;
-
 public final class FAWE_Spigot_v1_16_R1 extends CachedBukkitAdapter implements IDelegateBukkitImplAdapter<NBTBase> {
+
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
+
     private final Spigot_v1_16_R1 parent;
     private char[] ibdToStateOrdinal;
     private int[] ordinalToIbdID;
@@ -343,9 +346,8 @@ public final class FAWE_Spigot_v1_16_R1 extends CachedBukkitAdapter implements I
                 init();
                 return adaptToChar(ibd);
             } catch (ArrayIndexOutOfBoundsException e1) {
-                getLogger(FAWE_Spigot_v1_16_R1.class)
+                LOGGER.error("Attempted to convert {} with ID {} to char. ibdToStateOrdinal length: {}. Defaulting to air!",
-                    .error("Attempted to convert {} with ID {} to char. ibdToStateOrdinal length: {}. Defaulting to air!",
+                        ibd.getBlock(), Block.REGISTRY_ID.getId(ibd), ibdToStateOrdinal.length, e1);
-                           ibd.getBlock(), Block.REGISTRY_ID.getId(ibd), ibdToStateOrdinal.length, e1);
                 return 0;
             }
         }

worldedit-bukkit/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/FAWE_Spigot_v1_16_R2.java

@@ -42,6 +42,7 @@ import com.sk89q.worldedit.bukkit.adapter.impl.regen.Regen_v1_16_R2;
 import com.sk89q.worldedit.entity.BaseEntity;
 import com.sk89q.worldedit.entity.LazyBaseEntity;
 import com.sk89q.worldedit.extent.Extent;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.internal.wna.WorldNativeAccess;
 import com.sk89q.worldedit.regions.Region;
 import com.sk89q.worldedit.registry.state.Property;
@@ -81,6 +82,7 @@ import net.minecraft.server.v1_16_R2.PlayerChunk;
 import net.minecraft.server.v1_16_R2.TileEntity;
 import net.minecraft.server.v1_16_R2.World;
 import net.minecraft.server.v1_16_R2.WorldServer;
+import org.apache.logging.log4j.Logger;
 import org.bukkit.Bukkit;
 import org.bukkit.Location;
 import org.bukkit.block.data.BlockData;
@@ -102,9 +104,10 @@ import java.util.Set;
 import java.util.function.Supplier;
 import java.util.stream.Stream;
 
-import static org.slf4j.LoggerFactory.getLogger;
-
 public final class FAWE_Spigot_v1_16_R2 extends CachedBukkitAdapter implements IDelegateBukkitImplAdapter<NBTBase> {
+
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
+
     private final Spigot_v1_16_R2 parent;
     private char[] ibdToStateOrdinal;
     private int[] ordinalToIbdID;
@@ -345,9 +348,8 @@ public final class FAWE_Spigot_v1_16_R2 extends CachedBukkitAdapter implements I
                 init();
                 return adaptToChar(ibd);
             } catch (ArrayIndexOutOfBoundsException e1) {
-                getLogger(FAWE_Spigot_v1_16_R2.class)
+                LOGGER.error("Attempted to convert {} with ID {} to char. ibdToStateOrdinal length: {}. Defaulting to air!",
-                    .error("Attempted to convert {} with ID {} to char. ibdToStateOrdinal length: {}. Defaulting to air!",
+                        ibd.getBlock(), Block.REGISTRY_ID.getId(ibd), ibdToStateOrdinal.length, e1);
-                           ibd.getBlock(), Block.REGISTRY_ID.getId(ibd), ibdToStateOrdinal.length, e1);
                 return 0;
             }
         }

worldedit-bukkit/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/FAWE_Spigot_v1_16_R3.java

@@ -42,6 +42,7 @@ import com.sk89q.worldedit.bukkit.adapter.impl.regen.Regen_v1_16_R3;
 import com.sk89q.worldedit.entity.BaseEntity;
 import com.sk89q.worldedit.entity.LazyBaseEntity;
 import com.sk89q.worldedit.extent.Extent;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.internal.wna.WorldNativeAccess;
 import com.sk89q.worldedit.regions.Region;
 import com.sk89q.worldedit.registry.state.Property;
@@ -81,6 +82,7 @@ import net.minecraft.server.v1_16_R3.PlayerChunk;
 import net.minecraft.server.v1_16_R3.TileEntity;
 import net.minecraft.server.v1_16_R3.World;
 import net.minecraft.server.v1_16_R3.WorldServer;
+import org.apache.logging.log4j.Logger;
 import org.bukkit.Bukkit;
 import org.bukkit.Location;
 import org.bukkit.block.data.BlockData;
@@ -102,9 +104,10 @@ import java.util.Set;
 import java.util.function.Supplier;
 import java.util.stream.Stream;
 
-import static org.slf4j.LoggerFactory.getLogger;
-
 public final class FAWE_Spigot_v1_16_R3 extends CachedBukkitAdapter implements IDelegateBukkitImplAdapter<NBTBase> {
+
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
+
     private final Spigot_v1_16_R3 parent;
     private char[] ibdToStateOrdinal;
     private int[] ordinalToIbdID;
@@ -345,9 +348,8 @@ public final class FAWE_Spigot_v1_16_R3 extends CachedBukkitAdapter implements I
                 init();
                 return adaptToChar(ibd);
             } catch (ArrayIndexOutOfBoundsException e1) {
-                getLogger(FAWE_Spigot_v1_16_R3.class)
+                LOGGER.error("Attempted to convert {} with ID {} to char. ibdToStateOrdinal length: {}. Defaulting to air!",
-                    .error("Attempted to convert {} with ID {} to char. ibdToStateOrdinal length: {}. Defaulting to air!",
+                        ibd.getBlock(), Block.REGISTRY_ID.getId(ibd), ibdToStateOrdinal.length, e1);
-                           ibd.getBlock(), Block.REGISTRY_ID.getId(ibd), ibdToStateOrdinal.length, e1);
                 return 0;
             }
         }

worldedit-cli/build.gradle.kts

@@ -10,13 +10,15 @@ applyShadowConfiguration()
 addJarManifest(WorldEditKind.Standalone("com.sk89q.worldedit.cli.CLIWorldEdit"))
 
 dependencies {
-    "api"(project(":worldedit-core"))
+    api(project(":worldedit-core"))
-    "implementation"(platform("org.apache.logging.log4j:log4j-bom:2.14.0"))
+    implementation(platform("org.apache.logging.log4j:log4j-bom:2.14.1") {
-    "implementation"("org.apache.logging.log4j:log4j-core")
+        because("We control Log4J on this platform")
-    "implementation"("org.apache.logging.log4j:log4j-slf4j-impl")
+    })
-    "implementation"("commons-cli:commons-cli:1.4")
+    implementation("org.apache.logging.log4j:log4j-api")
-    "implementation"("com.google.guava:guava")
+    implementation("org.apache.logging.log4j:log4j-core")
-    "implementation"("com.google.code.gson:gson")
+    implementation("commons-cli:commons-cli:1.4")
+    implementation("com.google.guava:guava")
+    implementation("com.google.code.gson:gson")
 }
 
 tasks.named<ShadowJar>("shadowJar") {

worldedit-cli/src/main/java/com/sk89q/worldedit/cli/CLICommandSender.java

@@ -28,8 +28,7 @@ import com.sk89q.worldedit.util.auth.AuthorizationException;
 import com.sk89q.worldedit.util.formatting.WorldEditText;
 import com.sk89q.worldedit.util.formatting.text.Component;
 import com.sk89q.worldedit.util.formatting.text.serializer.plain.PlainComponentSerializer;
-import org.slf4j.Logger;
+import org.apache.logging.log4j.Logger;
-
 import java.io.File;
 import java.util.Locale;
 import java.util.Map;

worldedit-cli/src/main/java/com/sk89q/worldedit/cli/CLIWorldEdit.java

@@ -31,6 +31,7 @@ import com.sk89q.worldedit.extension.platform.Platform;
 import com.sk89q.worldedit.extent.clipboard.io.ClipboardFormat;
 import com.sk89q.worldedit.extent.clipboard.io.ClipboardFormats;
 import com.sk89q.worldedit.extent.clipboard.io.ClipboardReader;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.registry.state.Property;
 import com.sk89q.worldedit.util.formatting.text.TranslatableComponent;
 import com.sk89q.worldedit.world.biome.BiomeType;
@@ -44,8 +45,7 @@ import com.sk89q.worldedit.world.item.ItemType;
 import org.apache.commons.cli.CommandLine;
 import org.apache.commons.cli.DefaultParser;
 import org.apache.commons.cli.Options;
-import org.slf4j.Logger;
+import org.apache.logging.log4j.Logger;
-import org.slf4j.LoggerFactory;
 
 import java.io.ByteArrayInputStream;
 import java.io.File;
@@ -67,7 +67,7 @@ import java.util.Scanner;
  */
 public class CLIWorldEdit {
 
-    private static final Logger LOGGER = LoggerFactory.getLogger(CLIWorldEdit.class);
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
 
     public static CLIWorldEdit inst;
 

worldedit-core/build.gradle.kts

@@ -12,11 +12,6 @@ repositories {
     maven {
         name = "IntellectualSites"
         url = uri("https://mvn.intellectualsites.com/content/groups/public/")
-        content {
-            includeGroup("com.plotsquared")
-            includeGroup("com.intellectualsites.paster")
-            includeGroup("com.github.intellectualsites.plotsquared")
-        }
     }
 }
 
@@ -32,13 +27,14 @@ dependencies {
 
     api(project(":worldedit-libs:core"))
     implementation("de.schlichtherle:truezip:6.8.4")
-    implementation("net.java.truevfs:truevfs-profile-default_2.13:0.12.2")
     implementation("org.mozilla:rhino-runtime:1.7.13")
     implementation("org.yaml:snakeyaml")
     implementation("com.google.guava:guava")
     implementation("com.google.code.findbugs:jsr305:3.0.2")
     implementation("com.google.code.gson:gson")
-    implementation("org.slf4j:slf4j-api:${Versions.SLF4J}")
+    implementation("org.apache.logging.log4j:log4j-api:2.8.1") {
+        because("Mojang provides Log4J 2.8.1")
+    }
     implementation("it.unimi.dsi:fastutil")
 
     val antlrVersion = "4.9.1"
@@ -54,7 +50,7 @@ dependencies {
     annotationProcessor("com.google.auto.value:auto-value:${Versions.AUTO_VALUE}")
     testImplementation("ch.qos.logback:logback-core:${Versions.LOGBACK}")
     testImplementation("ch.qos.logback:logback-classic:${Versions.LOGBACK}")
-    implementation("com.github.luben:zstd-jni:1.4.8-6")
+    implementation("com.github.luben:zstd-jni:1.4.9-2")
     compileOnly("net.fabiozumbi12:redprotect:1.9.6")
     api("com.github.intellectualsites.plotsquared:PlotSquared-API:4.514") { isTransitive = false }
     api("com.plotsquared:PlotSquared-Core:5.13.3") { isTransitive = false }
@@ -109,7 +105,7 @@ tasks.named<Copy>("processResources") {
 }
 tasks.named<ShadowJar>("shadowJar") {
     dependencies {
-        include(dependency("com.github.luben:zstd-jni:1.4.8-6"))
+        include(dependency("com.github.luben:zstd-jni:1.4.9-2"))
 
     }
 }

worldedit-core/src/main/java/com/boydti/fawe/Fawe.java

@@ -14,8 +14,8 @@ import com.boydti.fawe.util.TextureUtil;
 import com.boydti.fawe.util.WEManager;
 import com.github.luben.zstd.util.Native;
 import com.sk89q.worldedit.WorldEdit;
-import org.slf4j.Logger;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
-import org.slf4j.LoggerFactory;
+import org.apache.logging.log4j.Logger;
 
 import java.io.BufferedReader;
 import java.io.File;
@@ -73,7 +73,7 @@ import javax.management.NotificationEmitter;
  */
 public class Fawe {
 
-    private static final Logger log = LoggerFactory.getLogger(Fawe.class);
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
 
     private static Fawe instance;
 
@@ -250,7 +250,7 @@ public class Fawe {
         try {
             Settings.IMP.reload(file);
         } catch (Throwable e) {
-            log.error("Failed to load config.", e);
+            LOGGER.error("Failed to load config.", e);
         }
     }
 
@@ -272,14 +272,14 @@ public class Fawe {
                 if (Settings.IMP.CLIPBOARD.COMPRESSION_LEVEL > 6 || Settings.IMP.HISTORY.COMPRESSION_LEVEL > 6) {
                     Settings.IMP.CLIPBOARD.COMPRESSION_LEVEL = Math.min(6, Settings.IMP.CLIPBOARD.COMPRESSION_LEVEL);
                     Settings.IMP.HISTORY.COMPRESSION_LEVEL = Math.min(6, Settings.IMP.HISTORY.COMPRESSION_LEVEL);
-                    log.error("ZSTD Compression Binding Not Found.\n"
+                    LOGGER.error("ZSTD Compression Binding Not Found.\n"
                                   + "FAWE will still work but compression won't work as well.\n", e);
                 }
             }
             try {
                 net.jpountz.util.Native.load();
             } catch (Throwable e) {
-                log.error("LZ4 Compression Binding Not Found.\n"
+                LOGGER.error("LZ4 Compression Binding Not Found.\n"
                               + "FAWE will still work but compression will be slower.\n", e);
             }
         }
@@ -288,7 +288,7 @@ public class Fawe {
         boolean x86OS = System.getProperty("sun.arch.data.model").contains("32");
         boolean x86JVM = System.getProperty("os.arch").contains("32");
         if (x86OS != x86JVM) {
-            log.info("You are running 32-bit Java on a 64-bit machine. Please upgrade to 64-bit Java.");
+            LOGGER.info("You are running 32-bit Java on a 64-bit machine. Please upgrade to 64-bit Java.");
         }
     }
 
@@ -322,7 +322,7 @@ public class Fawe {
                 }
             }
         } catch (Throwable ignored) {
-            log.error("FAWE encountered an error trying to listen to JVM memory.\n"
+            LOGGER.error("FAWE encountered an error trying to listen to JVM memory.\n"
                           + "Please change your Java security settings or disable this message by"
                           + "changing 'max-memory-percent' in the config files to '-1'.");
         }

worldedit-core/src/main/java/com/boydti/fawe/FaweCache.java

@@ -30,10 +30,12 @@ import com.sk89q.jnbt.LongTag;
 import com.sk89q.jnbt.ShortTag;
 import com.sk89q.jnbt.StringTag;
 import com.sk89q.jnbt.Tag;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.math.MutableBlockVector3;
 import com.sk89q.worldedit.math.MutableVector3;
 import com.sk89q.worldedit.util.formatting.text.TranslatableComponent;
 import com.sk89q.worldedit.world.block.BlockTypesCache;
+import org.apache.logging.log4j.Logger;
 import org.jetbrains.annotations.NotNull;
 
 import java.util.ArrayList;
@@ -56,12 +58,13 @@ import java.util.function.Function;
 import java.util.function.Supplier;
 
 import static com.google.common.base.Preconditions.checkNotNull;
-import static org.slf4j.LoggerFactory.getLogger;
 
 public enum FaweCache implements Trimable {
     IMP
     ; // singleton
 
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
+
     public final int BLOCKS_PER_LAYER = 4096;
     public final int CHUNK_LAYERS = 16;
     public final int WORLD_HEIGHT = CHUNK_LAYERS << 4;
@@ -503,7 +506,7 @@ public enum FaweCache implements Trimable {
         } else if (value instanceof Boolean) {
             return asTag((byte) ((boolean) value ? 1 : 0));
         }
-        getLogger(FaweCache.class).error("Invalid nbt: {}", value);
+        LOGGER.error("Invalid nbt: {}", value);
         return null;
     }
 

worldedit-core/src/main/java/com/boydti/fawe/beta/IBatchProcessor.java

@@ -14,7 +14,7 @@ import java.util.Set;
 import java.util.concurrent.Future;
 import java.util.function.Function;
 
-import static org.slf4j.LoggerFactory.getLogger;
+import static org.apache.logging.log4j.LogManager.getLogger;
 
 public interface IBatchProcessor {
 

worldedit-core/src/main/java/com/boydti/fawe/beta/implementation/blocks/CharBlocks.java

@@ -3,15 +3,15 @@ package com.boydti.fawe.beta.implementation.blocks;
 import com.boydti.fawe.Fawe;
 import com.boydti.fawe.beta.IBlocks;
 import com.boydti.fawe.beta.IChunkSet;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.world.block.BlockState;
 import com.sk89q.worldedit.world.block.BlockTypesCache;
+import org.apache.logging.log4j.Logger;
 import org.jetbrains.annotations.Range;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
 public abstract class CharBlocks implements IBlocks {
 
-    public static final Logger logger = LoggerFactory.getLogger(CharBlocks.class);
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
 
     protected static final Section FULL = new Section() {
         @Override
@@ -139,9 +139,9 @@ public abstract class CharBlocks implements IBlocks {
         try {
             set(layer, index, value);
         } catch (ArrayIndexOutOfBoundsException exception) {
-            logger.error("Tried setting block at coordinates (" + x + "," + y + "," + z + ")");
+            LOGGER.error("Tried setting block at coordinates (" + x + "," + y + "," + z + ")");
             assert Fawe.imp() != null;
-            logger.error("Layer variable was = {}", layer, exception);
+            LOGGER.error("Layer variable was = {}", layer, exception);
         }
     }
 

worldedit-core/src/main/java/com/boydti/fawe/beta/implementation/lighting/NMSRelighter.java

@@ -10,6 +10,7 @@ import com.boydti.fawe.object.RunnableVal;
 import com.boydti.fawe.object.collection.BlockVectorSet;
 import com.boydti.fawe.util.MathMan;
 import com.boydti.fawe.util.TaskManager;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.math.MutableBlockVector3;
 import com.sk89q.worldedit.registry.state.BooleanProperty;
 import com.sk89q.worldedit.registry.state.DirectionalProperty;
@@ -20,8 +21,7 @@ import com.sk89q.worldedit.world.block.BlockState;
 import com.sk89q.worldedit.world.block.BlockTypes;
 import com.sk89q.worldedit.world.registry.BlockMaterial;
 import it.unimi.dsi.fastutil.longs.Long2ObjectOpenHashMap;
-import org.slf4j.Logger;
+import org.apache.logging.log4j.Logger;
-import org.slf4j.LoggerFactory;
 
 import java.util.ArrayDeque;
 import java.util.ArrayList;
@@ -41,7 +41,7 @@ import java.util.stream.Collectors;
 
 public class NMSRelighter implements Relighter {
 
-    private static final Logger log = LoggerFactory.getLogger(NMSRelighter.class);
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
     private static final int DISPATCH_SIZE = 64;
     private static final DirectionalProperty stairDirection;
     private static final EnumProperty stairHalf;
@@ -1028,8 +1028,8 @@ public class NMSRelighter implements Relighter {
                                 heightMapList.get(HeightMapType.MOTION_BLOCKING)[j] = y + 1;
                             }
                         } catch (Exception ignored) {
-                            log.debug("Error calculating waterlogged state for BlockState: " + state.getBlockType().getId() + ". States:");
+                            LOGGER.debug("Error calculating waterlogged state for BlockState: " + state.getBlockType().getId() + ". States:");
-                            log.debug(states.entrySet().stream().map(e -> e.getKey() + "=" + e.getValue())
+                            LOGGER.debug(states.entrySet().stream().map(e -> e.getKey() + "=" + e.getValue())
                                 .collect(Collectors.joining(", ", "{", "}")));
                         }
                         try {
@@ -1039,8 +1039,8 @@ public class NMSRelighter implements Relighter {
                                 heightMapList.get(HeightMapType.MOTION_BLOCKING_NO_LEAVES)[j] = y + 1;
                             }
                         } catch (Exception ignored) {
-                            log.debug("Error calculating waterlogged state for BlockState: " + state.getBlockType().getId() + ". States:");
+                            LOGGER.debug("Error calculating waterlogged state for BlockState: " + state.getBlockType().getId() + ". States:");
-                            log.debug(states.entrySet().stream().map(e -> e.getKey() + "=" + e.getValue())
+                            LOGGER.debug(states.entrySet().stream().map(e -> e.getKey() + "=" + e.getValue())
                                 .collect(Collectors.joining(", ", "{", "}")));
                         }
                     }

worldedit-core/src/main/java/com/boydti/fawe/beta/implementation/processors/MultiBatchProcessor.java

@@ -10,8 +10,6 @@ import com.boydti.fawe.util.StringMan;
 import com.google.common.cache.LoadingCache;
 import com.sk89q.worldedit.extent.Extent;
 import org.jetbrains.annotations.Nullable;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
 import java.util.ArrayList;
 import java.util.Arrays;
@@ -28,8 +26,6 @@ import java.util.function.Supplier;
 
 public class MultiBatchProcessor implements IBatchProcessor {
 
-    private static final Logger log = LoggerFactory.getLogger(MultiBatchProcessor.class);
-
     private IBatchProcessor[] processors;
     private final LoadingCache<Class<?>, Map<Long, Filter>> classToThreadIdToFilter =
         FaweCache.IMP.createCache((Supplier<Map<Long, Filter>>) ConcurrentHashMap::new);

worldedit-core/src/main/java/com/boydti/fawe/beta/implementation/queue/SingleThreadQueueExtent.java

@@ -21,9 +21,9 @@ import com.boydti.fawe.util.MathMan;
 import com.boydti.fawe.util.MemUtil;
 import com.google.common.util.concurrent.Futures;
 import com.sk89q.worldedit.extent.Extent;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import it.unimi.dsi.fastutil.longs.Long2ObjectLinkedOpenHashMap;
-import org.slf4j.Logger;
+import org.apache.logging.log4j.Logger;
-import org.slf4j.LoggerFactory;
 
 import java.util.concurrent.ConcurrentLinkedQueue;
 import java.util.concurrent.ExecutionException;
@@ -38,8 +38,7 @@ import java.util.concurrent.locks.ReentrantLock;
  */
 public class SingleThreadQueueExtent extends ExtentBatchProcessorHolder implements IQueueExtent<IQueueChunk> {
 
-    // Don't bother with the full classpath.
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
-    private static final Logger log = LoggerFactory.getLogger("SingleThreadQueueExtent");
 
     // Pool discarded chunks for reuse (can safely be cleared by another thread)
     // private static final ConcurrentLinkedQueue<IChunk> CHUNK_POOL = new ConcurrentLinkedQueue<>();
@@ -302,10 +301,10 @@ public class SingleThreadQueueExtent extends ExtentBatchProcessorHolder implemen
                             future = (Future) future.get();
                         }
                     } catch (FaweException messageOnly) {
-                        log.warn(messageOnly.getMessage());
+                        LOGGER.warn(messageOnly.getMessage());
                     } catch (ExecutionException e) {
                         if (e.getCause() instanceof FaweException) {
-                            log.warn(e.getCause().getClass().getCanonicalName() + ": " + e.getCause().getMessage());
+                            LOGGER.warn(e.getCause().getClass().getCanonicalName() + ": " + e.getCause().getMessage());
                         } else {
                             e.printStackTrace();
                         }
@@ -321,10 +320,10 @@ public class SingleThreadQueueExtent extends ExtentBatchProcessorHolder implemen
                         first = (Future) first.get();
                     }
                 } catch (FaweException messageOnly) {
-                    log.warn(messageOnly.getMessage());
+                    LOGGER.warn(messageOnly.getMessage());
                 } catch (ExecutionException e) {
                     if (e.getCause() instanceof FaweException) {
-                        log.warn(e.getCause().getClass().getCanonicalName() + ": " + e.getCause().getMessage());
+                        LOGGER.warn(e.getCause().getClass().getCanonicalName() + ": " + e.getCause().getMessage());
                     } else {
                         e.printStackTrace();
                     }
@@ -340,14 +339,14 @@ public class SingleThreadQueueExtent extends ExtentBatchProcessorHolder implemen
                         try {
                             next = (Future) next.get();
                         } catch (FaweException messageOnly) {
-                            log.warn(messageOnly.getMessage());
+                            LOGGER.warn(messageOnly.getMessage());
                         } catch (ExecutionException e) {
                             if (e.getCause() instanceof FaweException) {
-                                log.warn(e.getCause().getClass().getCanonicalName() + ": " + e.getCause().getMessage());
+                                LOGGER.warn(e.getCause().getClass().getCanonicalName() + ": " + e.getCause().getMessage());
                             } else {
                                 e.printStackTrace();
                             }
-                            log.error("Please report this error on our issue tracker");
+                            LOGGER.error("Please report this error on our issue tracker: https://github.com/IntellectualSites/FastAsyncWorldEdit/issues");
                             e.getCause().printStackTrace();
                         } catch (InterruptedException e) {
                             e.printStackTrace();

worldedit-core/src/main/java/com/boydti/fawe/config/Config.java

@@ -3,8 +3,8 @@ package com.boydti.fawe.config;
 import com.boydti.fawe.configuration.MemorySection;
 import com.boydti.fawe.configuration.file.YamlConfiguration;
 import com.boydti.fawe.util.StringMan;
-import org.slf4j.Logger;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
-import org.slf4j.LoggerFactory;
+import org.apache.logging.log4j.Logger;
 
 import java.io.ByteArrayOutputStream;
 import java.io.File;
@@ -26,7 +26,7 @@ import java.util.Map;
 
 public class Config {
 
-    private final Logger log = LoggerFactory.getLogger(Config.class);
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
 
     public Config() {
         save(new PrintWriter(new ByteArrayOutputStream(0)), getClass(), this, 0);
@@ -48,7 +48,7 @@ public class Config {
                 }
             }
         }
-        log.debug("Failed to get config option: " + key);
+        LOGGER.debug("Failed to get config option: " + key);
         return null;
     }
 
@@ -79,7 +79,7 @@ public class Config {
                 }
             }
         }
-        log.debug("Failed to set config option: " + key + ": " + value + " | " + instance + " | " + root.getSimpleName() + ".yml");
+        LOGGER.debug("Failed to set config option: " + key + ": " + value + " | " + instance + " | " + root.getSimpleName() + ".yml");
     }
 
     public boolean load(File file) {
@@ -333,7 +333,7 @@ public class Config {
             setAccessible(field);
             return field;
         } catch (Throwable ignored) {
-            log.debug("Invalid config field: " + StringMan.join(split, ".") + " for " + toNodeName(instance.getClass().getSimpleName()));
+            LOGGER.debug("Invalid config field: " + StringMan.join(split, ".") + " for " + toNodeName(instance.getClass().getSimpleName()));
             return null;
         }
     }

worldedit-core/src/main/java/com/boydti/fawe/configuration/file/YamlConfiguration.java

@@ -3,7 +3,9 @@ package com.boydti.fawe.configuration.file;
 import com.boydti.fawe.configuration.Configuration;
 import com.boydti.fawe.configuration.ConfigurationSection;
 import com.boydti.fawe.configuration.InvalidConfigurationException;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.util.YAMLConfiguration;
+import org.apache.logging.log4j.Logger;
 import org.yaml.snakeyaml.DumperOptions;
 import org.yaml.snakeyaml.Yaml;
 import org.yaml.snakeyaml.error.YAMLException;
@@ -16,13 +18,13 @@ import java.nio.file.Files;
 import java.nio.file.StandardCopyOption;
 import java.util.Map;
 
-import static org.slf4j.LoggerFactory.getLogger;
-
 /**
  * An implementation of {@link com.boydti.fawe.configuration.Configuration} which saves all files in Yaml.
  * Note that this implementation is not synchronized.
  */
 public class YamlConfiguration extends FileConfiguration {
+
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
     protected static final String COMMENT_PREFIX = "# ";
     protected static final String BLANK_CONFIG = "{}\n";
     private final DumperOptions yamlOptions = new DumperOptions();
@@ -64,8 +66,7 @@ public class YamlConfiguration extends FileConfiguration {
                     dest = new File(file.getAbsolutePath() + "_broken_" + i++);
                 }
                 Files.copy(file.toPath(), dest.toPath(), StandardCopyOption.REPLACE_EXISTING);
-                getLogger(YamlConfiguration.class).error("Could not read: {}\n"
+                LOGGER.error("Could not read {}\n" + "Renamed to {}", file, dest.getAbsolutePath(), ex);
-                                                             + "Renamed to: {}", file, dest.getName(), ex);
             } catch (final IOException e) {
                 e.printStackTrace();
             }
@@ -97,7 +98,7 @@ public class YamlConfiguration extends FileConfiguration {
         try {
             config.load(reader);
         } catch (final IOException | InvalidConfigurationException ex) {
-            getLogger(YAMLConfiguration.class).error("Cannot load configuration from stream", ex);
+            LOGGER.error("Cannot load configuration from stream", ex);
         }
 
         return config;

worldedit-core/src/main/java/com/boydti/fawe/configuration/serialization/ConfigurationSerialization.java

@@ -1,7 +1,8 @@
 package com.boydti.fawe.configuration.serialization;
 
 import com.boydti.fawe.configuration.Configuration;
-import org.slf4j.LoggerFactory;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
+import org.apache.logging.log4j.Logger;
 
 import java.lang.reflect.Constructor;
 import java.lang.reflect.InvocationTargetException;
@@ -14,6 +15,8 @@ import java.util.Map;
  */
 public class ConfigurationSerialization {
 
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
+
     public static final String SERIALIZED_TYPE_KEY = "==";
     private static final Map<String, Class<? extends ConfigurationSerializable>> aliases =
         new HashMap<>();
@@ -196,15 +199,14 @@ public class ConfigurationSerialization {
             ConfigurationSerializable result = (ConfigurationSerializable) method.invoke(null, args);
 
             if (result == null) {
-                LoggerFactory.getLogger(ConfigurationSerialization.class).error(
+                LOGGER.error("Could not call method '" + method.toString() + "' of " + this.clazz + " for deserialization: method returned null");
-                        "Could not call method '" + method.toString() + "' of " + this.clazz + " for deserialization: method returned null");
             } else {
                 return result;
             }
         } catch (Throwable ex) {
-            LoggerFactory.getLogger(ConfigurationSerialization.class).error("Could not call method '" + method.toString() + "' of " + this.clazz
+            LOGGER.error("Could not call method '" + method.toString() + "' of " + this.clazz
-                                    + " for deserialization",
+                            + " for deserialization",
-                            ex instanceof InvocationTargetException ? ex.getCause() : ex);
+                    ex instanceof InvocationTargetException ? ex.getCause() : ex);
         }
 
         return null;
@@ -214,9 +216,9 @@ public class ConfigurationSerialization {
         try {
             return ctor.newInstance(args);
         } catch (Throwable ex) {
-            LoggerFactory.getLogger(ConfigurationSerialization.class).error("Could not call constructor '" + ctor.toString() + "' of " + this.clazz
+            LOGGER.error("Could not call constructor '" + ctor.toString() + "' of " + this.clazz
-                                    + " for deserialization",
+                            + " for deserialization",
-                            ex instanceof InvocationTargetException ? ex.getCause() : ex);
+                    ex instanceof InvocationTargetException ? ex.getCause() : ex);
         }
 
         return null;

worldedit-core/src/main/java/com/boydti/fawe/database/DBHandler.java

@@ -1,16 +1,15 @@
 package com.boydti.fawe.database;
 
-import com.boydti.fawe.config.Config;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.world.World;
-import org.slf4j.Logger;
+import org.apache.logging.log4j.Logger;
-import org.slf4j.LoggerFactory;
 
 import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
 
 public class DBHandler {
 
-    private final Logger log = LoggerFactory.getLogger(Config.class);
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
 
     public static final DBHandler IMP = new DBHandler();
 
@@ -26,7 +25,7 @@ public class DBHandler {
             databases.put(world, database);
             return database;
         } catch (Throwable e) {
-            log.error("No JDBC driver found!", e);
+            LOGGER.error("No JDBC driver found!", e);
             return null;
         }
     }

worldedit-core/src/main/java/com/boydti/fawe/database/RollbackDatabase.java

@@ -6,13 +6,13 @@ import com.boydti.fawe.logging.rollback.RollbackOptimizedHistory;
 import com.boydti.fawe.object.collection.YieldIterable;
 import com.boydti.fawe.object.task.AsyncNotifyQueue;
 import com.boydti.fawe.util.MainUtil;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.regions.CuboidRegion;
 import com.sk89q.worldedit.world.World;
+import org.apache.logging.log4j.Logger;
 import org.intellij.lang.annotations.Language;
 import org.jetbrains.annotations.NotNull;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
 import java.io.File;
 import java.io.IOException;
@@ -32,7 +32,7 @@ import java.util.stream.IntStream;
 
 public class RollbackDatabase extends AsyncNotifyQueue {
 
-    private static final Logger log = LoggerFactory.getLogger(RollbackDatabase.class);
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
 
     private final String prefix;
     private final File dbLocation;
@@ -309,7 +309,7 @@ public class RollbackDatabase extends AsyncNotifyQueue {
                 dbLocation.createNewFile();
             } catch (IOException e) {
                 e.printStackTrace();
-                log.debug("Unable to create the database!");
+                LOGGER.error("Unable to create the database!");
             }
         }
         Class.forName("org.sqlite.JDBC");

worldedit-core/src/main/java/com/boydti/fawe/jnbt/anvil/MCAChunk.java

@@ -17,6 +17,7 @@ import com.sk89q.jnbt.ListTag;
 import com.sk89q.jnbt.NBTConstants;
 import com.sk89q.jnbt.NBTInputStream;
 import com.sk89q.jnbt.NBTOutputStream;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.regions.Region;
 import com.sk89q.worldedit.registry.state.Property;
@@ -30,6 +31,7 @@ import com.sk89q.worldedit.world.block.BlockType;
 import com.sk89q.worldedit.world.block.BlockTypes;
 import com.sk89q.worldedit.world.block.BlockTypesCache;
 import it.unimi.dsi.fastutil.io.FastByteArrayOutputStream;
+import org.apache.logging.log4j.Logger;
 
 import java.io.IOException;
 import java.util.ArrayList;
@@ -44,9 +46,10 @@ import java.util.UUID;
 import java.util.concurrent.Future;
 import javax.annotation.Nullable;
 
-import static org.slf4j.LoggerFactory.getLogger;
-
 public class MCAChunk implements IChunk {
+
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
+
     public final boolean[] hasSections = new boolean[16];
 
     public boolean hasBiomes = false;
@@ -310,7 +313,7 @@ public class MCAChunk implements IChunk {
                                 Object value = state.getState(property);
                                 String valueStr = value.toString();
                                 if (Character.isUpperCase(valueStr.charAt(0))) {
-                                    getLogger(MCAChunk.class).warn("Invalid uppercase value {}", value);
+                                    LOGGER.warn("Invalid uppercase value {}", value);
                                     valueStr = valueStr.toLowerCase(Locale.ROOT);
                                 }
                                 out.writeNamedTag(key, valueStr);

worldedit-core/src/main/java/com/boydti/fawe/jnbt/anvil/MCAFile.java

@@ -12,11 +12,13 @@ import com.boydti.fawe.util.MathMan;
 import com.sk89q.jnbt.CompoundTag;
 import com.sk89q.jnbt.NBTInputStream;
 import com.sk89q.worldedit.WorldEditException;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.world.World;
 import it.unimi.dsi.fastutil.ints.Int2ObjectMap;
 import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
 import it.unimi.dsi.fastutil.io.FastByteArrayOutputStream;
+import org.apache.logging.log4j.Logger;
 
 import java.io.BufferedInputStream;
 import java.io.File;
@@ -38,8 +40,6 @@ import java.util.zip.Deflater;
 import java.util.zip.Inflater;
 import java.util.zip.InflaterInputStream;
 
-import static org.slf4j.LoggerFactory.getLogger;
-
 /**
  * Chunk format: http://minecraft.gamepedia.com/Chunk_format#Entity_format
  * e.g., `.Level.Entities.#` (Starts with a . as the root tag is unnamed)
@@ -47,6 +47,8 @@ import static org.slf4j.LoggerFactory.getLogger;
  */
 public class MCAFile extends ExtentBatchProcessorHolder implements Trimable, IChunkExtent {
 
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
+
     private static Field fieldBuf2;
 
     static {
@@ -294,7 +296,7 @@ public class MCAFile extends ExtentBatchProcessorHolder implements Trimable, ICh
                     if (offset < offsets.length) {
                         offsets[offset] = i;
                     } else {
-                        getLogger(MCAFile.class).debug("Ignoring invalid offset " + offset);
+                        LOGGER.debug("Ignoring invalid offset " + offset);
                     }
                 }
             }

worldedit-core/src/main/java/com/boydti/fawe/jnbt/streamer/StreamDelegate.java

@@ -2,13 +2,16 @@ package com.boydti.fawe.jnbt.streamer;
 
 import com.sk89q.jnbt.NBTConstants;
 import com.sk89q.jnbt.NBTInputStream;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
+import org.apache.logging.log4j.Logger;
 
 import java.io.DataInputStream;
 import java.io.IOException;
 
-import static org.slf4j.LoggerFactory.getLogger;
-
 public class StreamDelegate {
+
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
+
     private static final byte[][] ZERO_KEYS = new byte[0][];
     private static final StreamDelegate[] ZERO_VALUES = new StreamDelegate[0];
 
@@ -41,7 +44,7 @@ public class StreamDelegate {
 
     private StreamDelegate add(String name, StreamDelegate scope) {
         if (valueReader != null) {
-            getLogger(StreamDelegate.class).warn("Scope {} | {} may not run, as the stream is only read once, and a value reader is already set", name, scope);
+            LOGGER.warn("Scope {} | {} may not run, as the stream is only read once, and a value reader is already set", name, scope);
         }
         byte[] bytes = name.getBytes(NBTConstants.CHARSET);
         int maxSize = bytes.length;
@@ -169,7 +172,7 @@ public class StreamDelegate {
 
     public StreamDelegate withValue(ValueReader valueReader) {
         if (keys.length != 0) {
-            getLogger(StreamDelegate.class).warn("Reader {} may not run, as the stream is only read once, and a value reader is already set", valueReader);
+            LOGGER.warn("Reader {} may not run, as the stream is only read once, and a value reader is already set", valueReader);
         }
         this.valueReader = valueReader;
         return this;

worldedit-core/src/main/java/com/boydti/fawe/logging/rollback/RollbackOptimizedHistory.java

@@ -4,17 +4,20 @@ import com.boydti.fawe.database.DBHandler;
 import com.boydti.fawe.database.RollbackDatabase;
 import com.boydti.fawe.object.changeset.DiskStorageHistory;
 import com.boydti.fawe.object.changeset.SimpleChangeSetSummary;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.regions.CuboidRegion;
 import com.sk89q.worldedit.world.World;
+import org.apache.logging.log4j.Logger;
 
 import java.io.IOException;
 import java.io.OutputStream;
 import java.util.UUID;
 
-import static org.slf4j.LoggerFactory.getLogger;
-
 public class RollbackOptimizedHistory extends DiskStorageHistory {
+
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
+
     private long time;
 
     private int minX;
@@ -47,7 +50,7 @@ public class RollbackOptimizedHistory extends DiskStorageHistory {
         this.blockSize = (int) size;
         this.command = command;
         this.closed = true;
-        getLogger(RollbackOptimizedHistory.class).debug("Size {}", size);
+        LOGGER.debug("Size: {}", size);
     }
 
     public long getTime() {

worldedit-core/src/main/java/com/boydti/fawe/object/brush/InspectBrush.java

@@ -14,6 +14,7 @@ import com.sk89q.worldedit.command.tool.BrushTool;
 import com.sk89q.worldedit.entity.Player;
 import com.sk89q.worldedit.extension.platform.Actor;
 import com.sk89q.worldedit.extension.platform.Platform;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.math.Vector3;
 import com.sk89q.worldedit.util.Location;
@@ -24,16 +25,17 @@ import com.sk89q.worldedit.util.formatting.text.event.HoverEvent;
 import com.sk89q.worldedit.util.formatting.text.format.TextColor;
 import com.sk89q.worldedit.world.World;
 import com.sk89q.worldedit.world.block.BlockState;
+import org.apache.logging.log4j.Logger;
 
 import java.io.IOException;
 import java.util.Iterator;
 import java.util.UUID;
 import java.util.function.Supplier;
 
-import static org.slf4j.LoggerFactory.getLogger;
-
 public class InspectBrush extends BrushTool {
 
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
+
     /**
      * Construct the tool.
      */
@@ -64,13 +66,13 @@ public class InspectBrush extends BrushTool {
     public boolean perform(final Player player, LocalSession session, boolean rightClick) {
         if (!player.hasPermission("worldedit.tool.inspect")) {
             player.print(Caption.of("", "worldedit.tool.inspect"));
-            getLogger(InspectBrush.class).debug("No tool control");
+            LOGGER.debug("No tool control");
             return false;
         }
         if (!Settings.IMP.HISTORY.USE_DATABASE) {
             player.print(Caption.of("fawe.error.setting.disable",
                 "history.use-database (Import with /history import )"));
-            getLogger(InspectBrush.class).debug("No db");
+            LOGGER.debug("No db");
             return false;
         }
         try {
@@ -113,7 +115,7 @@ public class InspectBrush extends BrushTool {
         } catch (IOException e) {
             throw new RuntimeException(e);
         } catch (Throwable e) {
-            getLogger(InspectBrush.class).error("E throw", e);
+            LOGGER.error("E throw", e);
         }
         return true;
     }

worldedit-core/src/main/java/com/boydti/fawe/object/brush/visualization/cfi/HeightMapMCAGenerator.java

@@ -37,6 +37,7 @@ import com.sk89q.worldedit.extent.clipboard.Clipboard;
 import com.sk89q.worldedit.function.mask.Mask;
 import com.sk89q.worldedit.function.operation.Operation;
 import com.sk89q.worldedit.function.pattern.Pattern;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.math.BlockVector2;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.math.MutableBlockVector3;
@@ -60,6 +61,7 @@ import com.sk89q.worldedit.world.block.BlockStateHolder;
 import com.sk89q.worldedit.world.block.BlockType;
 import com.sk89q.worldedit.world.block.BlockTypes;
 import com.sk89q.worldedit.world.block.BlockTypesCache;
+import org.apache.logging.log4j.Logger;
 
 import java.awt.image.BufferedImage;
 import java.io.File;
@@ -75,10 +77,10 @@ import java.util.concurrent.ThreadLocalRandom;
 import java.util.function.Supplier;
 import javax.annotation.Nullable;
 
-import static org.slf4j.LoggerFactory.getLogger;
-
 public class HeightMapMCAGenerator extends MCAWriter implements StreamChange, Drawable, VirtualWorld {
 
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
+
     private final MutableBlockVector3 mutable = new MutableBlockVector3();
 
     private final DifferentialBlockBuffer blocks;
@@ -2128,7 +2130,7 @@ public class HeightMapMCAGenerator extends MCAWriter implements StreamChange, Dr
 
     @Override
     public IChunkGet get(int x, int z) {
-        getLogger(HeightMapMCAGenerator.class).debug("Should not be using buffering with HMMG");
+        LOGGER.debug("Should not be using buffering with HMMG");
         return new FallbackChunkGet(this, x, z);
     }
 }

worldedit-core/src/main/java/com/boydti/fawe/object/change/CFIChange.java

@@ -5,14 +5,18 @@ import com.boydti.fawe.util.ExtentTraverser;
 import com.sk89q.worldedit.WorldEditException;
 import com.sk89q.worldedit.history.UndoContext;
 import com.sk89q.worldedit.history.change.Change;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
+import org.apache.logging.log4j.Logger;
 
 import java.io.File;
 import java.io.IOException;
 
 import static com.google.common.base.Preconditions.checkNotNull;
-import static org.slf4j.LoggerFactory.getLogger;
 
 public class CFIChange implements Change {
+
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
+
     private final File file;
 
     public CFIChange(File file) {
@@ -25,7 +29,7 @@ public class CFIChange implements Change {
         if (found != null) {
             return found.get();
         }
-        getLogger(CFIChange.class).debug("FAWE does not support: " + context.getExtent() + " for " + getClass() + " (bug Empire92)");
+        LOGGER.debug("FAWE does not support: " + context.getExtent() + " for " + getClass() + " (bug Empire92)");
         return null;
     }
 

worldedit-core/src/main/java/com/boydti/fawe/object/change/MutableEntityChange.java

@@ -10,18 +10,20 @@ import com.sk89q.worldedit.entity.BaseEntity;
 import com.sk89q.worldedit.extent.Extent;
 import com.sk89q.worldedit.history.UndoContext;
 import com.sk89q.worldedit.history.change.Change;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.util.Location;
 import com.sk89q.worldedit.world.entity.EntityType;
 import com.sk89q.worldedit.world.entity.EntityTypes;
+import org.apache.logging.log4j.Logger;
 
 import java.util.List;
 import java.util.Map;
 import java.util.UUID;
 
-import static org.slf4j.LoggerFactory.getLogger;
-
 public class MutableEntityChange implements Change {
 
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
+
     public CompoundTag tag;
     public boolean create;
 
@@ -59,7 +61,7 @@ public class MutableEntityChange implements Change {
             most = ((LongTag) map.get("PersistentIDMSB")).getValue();
             least = ((LongTag) map.get("PersistentIDLSB")).getValue();
         } else {
-            getLogger(MutableEntityChange.class).debug("Skipping entity without uuid.");
+            LOGGER.debug("Skipping entity without uuid.");
             return;
         }
         List<DoubleTag> pos = (List<DoubleTag>) map.get("Pos").getValue();
@@ -74,7 +76,7 @@ public class MutableEntityChange implements Change {
         Map<String, Tag> map = tag.getValue();
         Tag posTag = map.get("Pos");
         if (posTag == null) {
-            getLogger(MutableEntityChange.class).debug("Missing pos tag: " + tag);
+            LOGGER.debug("Missing pos tag: " + tag);
             return;
         }
         List<DoubleTag> pos = (List<DoubleTag>) posTag.getValue();

worldedit-core/src/main/java/com/boydti/fawe/object/changeset/AbstractChangeSet.java

@@ -38,7 +38,7 @@ import java.util.UUID;
 import java.util.concurrent.Future;
 import java.util.concurrent.atomic.AtomicInteger;
 
-import static org.slf4j.LoggerFactory.getLogger;
+import static org.apache.logging.log4j.LogManager.getLogger;
 
 public abstract class AbstractChangeSet implements ChangeSet, IBatchProcessor {
 

worldedit-core/src/main/java/com/boydti/fawe/object/clipboard/DiskOptimizedClipboard.java

@@ -11,6 +11,7 @@ import com.sk89q.jnbt.Tag;
 import com.sk89q.worldedit.entity.BaseEntity;
 import com.sk89q.worldedit.entity.Entity;
 import com.sk89q.worldedit.extent.clipboard.BlockArrayClipboard;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.regions.CuboidRegion;
 import com.sk89q.worldedit.regions.Region;
@@ -21,8 +22,7 @@ import com.sk89q.worldedit.world.block.BaseBlock;
 import com.sk89q.worldedit.world.block.BlockState;
 import com.sk89q.worldedit.world.block.BlockStateHolder;
 import com.sk89q.worldedit.world.block.BlockTypes;
-import org.slf4j.Logger;
+import org.apache.logging.log4j.Logger;
-import org.slf4j.LoggerFactory;
 
 import javax.annotation.Nullable;
 import java.io.Closeable;
@@ -53,7 +53,7 @@ import java.util.stream.Collectors;
  */
 public class DiskOptimizedClipboard extends LinearClipboard implements Closeable {
 
-    private static final Logger log = LoggerFactory.getLogger(DiskOptimizedClipboard.class);
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
 
     private static final int HEADER_SIZE = 14;
 
@@ -80,7 +80,7 @@ public class DiskOptimizedClipboard extends LinearClipboard implements Closeable
         if (HEADER_SIZE + ((long) getVolume() << 1) >= Integer.MAX_VALUE) {
             throw new IllegalArgumentException("Dimensions too large for this clipboard format. Use //lazycopy for large selections.");
         } else if (HEADER_SIZE + ((long) getVolume() << 1) + (long) ((getHeight() >> 2) + 1) * ((getLength() >> 2) + 1) * ((getWidth() >> 2) + 1) >= Integer.MAX_VALUE) {
-            log.error("Dimensions are too large for biomes to be stored in a DiskOptimizedClipboard");
+            LOGGER.error("Dimensions are too large for biomes to be stored in a DiskOptimizedClipboard");
             canHaveBiomes = false;
         }
         nbtMap = new HashMap<>();

worldedit-core/src/main/java/com/boydti/fawe/object/schematic/MinecraftStructure.java

@@ -15,6 +15,7 @@ import com.sk89q.worldedit.extent.clipboard.BlockArrayClipboard;
 import com.sk89q.worldedit.extent.clipboard.Clipboard;
 import com.sk89q.worldedit.extent.clipboard.io.ClipboardReader;
 import com.sk89q.worldedit.extent.clipboard.io.ClipboardWriter;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.math.MutableBlockVector3;
 import com.sk89q.worldedit.regions.CuboidRegion;
@@ -29,6 +30,7 @@ import com.sk89q.worldedit.world.block.BlockTypes;
 import com.sk89q.worldedit.world.entity.EntityTypes;
 import com.sk89q.worldedit.world.storage.NBTConversions;
 import it.unimi.dsi.fastutil.ints.Int2ObjectArrayMap;
+import org.apache.logging.log4j.Logger;
 import org.jetbrains.annotations.NotNull;
 
 import java.io.IOException;
@@ -39,9 +41,10 @@ import java.util.List;
 import java.util.Map;
 import java.util.UUID;
 
-import static org.slf4j.LoggerFactory.getLogger;
-
 public class MinecraftStructure implements ClipboardReader, ClipboardWriter {
+
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
+
     private static final int WARN_SIZE = 32;
 
     private NBTInputStream inputStream;
@@ -160,7 +163,7 @@ public class MinecraftStructure implements ClipboardReader, ClipboardWriter {
         int height = region.getHeight();
         int length = region.getLength();
         if (width > WARN_SIZE || height > WARN_SIZE || length > WARN_SIZE) {
-            getLogger(MinecraftStructure.class).debug("A structure longer than 32 is unsupported by minecraft (but probably still works)");
+            LOGGER.info("A structure longer than 32 is unsupported by minecraft (but probably still works)");
         }
         Map<String, Object> structure = FaweCache.IMP.asMap("version", 1, "author", owner);
         // ignored: version / owner

worldedit-core/src/main/java/com/boydti/fawe/util/EditSessionBuilder.java

@@ -36,14 +36,14 @@ import com.sk89q.worldedit.event.extent.EditSessionEvent;
 import com.sk89q.worldedit.extent.AbstractDelegateExtent;
 import com.sk89q.worldedit.extent.Extent;
 import com.sk89q.worldedit.extent.inventory.BlockBag;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.regions.Region;
 import com.sk89q.worldedit.util.Identifiable;
 import com.sk89q.worldedit.util.eventbus.EventBus;
 import com.sk89q.worldedit.util.formatting.text.TranslatableComponent;
 import com.sk89q.worldedit.world.World;
+import org.apache.logging.log4j.Logger;
 import org.jetbrains.annotations.NotNull;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
 import java.util.Locale;
 import java.util.UUID;
@@ -53,7 +53,7 @@ import static com.google.common.base.Preconditions.checkNotNull;
 
 public class EditSessionBuilder {
 
-    private static final Logger logger = LoggerFactory.getLogger(AbstractDelegateExtent.class);
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
 
     @NotNull
     private World world;
@@ -246,11 +246,11 @@ public class EditSessionBuilder {
                     event.getActor().printDebug(" - To allow this plugin add it to the FAWE `allowed-plugins` list");
                     event.getActor().printDebug(" - To hide this message set `debug` to false in the FAWE config.yml");
                 } else {
-                    logger.debug("Potentially unsafe extent blocked: " + toReturn.getClass().getName());
+                    LOGGER.debug("Potentially unsafe extent blocked: " + toReturn.getClass().getName());
-                    logger.debug(" - For area restrictions, it is recommended to use the FaweAPI");
+                    LOGGER.debug(" - For area restrictions, it is recommended to use the FaweAPI");
-                    logger.debug(" - For block logging, it is recommended to use BlocksHub");
+                    LOGGER.debug(" - For block logging, it is recommended to use BlocksHub");
-                    logger.debug(" - To allow this plugin add it to the FAWE `allowed-plugins` list");
+                    LOGGER.debug(" - To allow this plugin add it to the FAWE `allowed-plugins` list");
-                    logger.debug(" - To hide this message set `debug` to false in the FAWE config.yml");
+                    LOGGER.debug(" - To hide this message set `debug` to false in the FAWE config.yml");
                 }
             }
         }

worldedit-core/src/main/java/com/boydti/fawe/util/MainUtil.java

@@ -21,6 +21,7 @@ import com.sk89q.worldedit.entity.Entity;
 import com.sk89q.worldedit.extent.clipboard.io.ClipboardFormat;
 import com.sk89q.worldedit.extent.clipboard.io.ClipboardFormats;
 import com.sk89q.worldedit.history.changeset.ChangeSet;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.util.Location;
 import com.sk89q.worldedit.util.formatting.text.Component;
 import com.sk89q.worldedit.util.formatting.text.TranslatableComponent;
@@ -32,6 +33,7 @@ import net.jpountz.lz4.LZ4Factory;
 import net.jpountz.lz4.LZ4FastDecompressor;
 import net.jpountz.lz4.LZ4InputStream;
 import net.jpountz.lz4.LZ4Utils;
+import org.apache.logging.log4j.Logger;
 import org.jetbrains.annotations.NotNull;
 
 import javax.annotation.Nonnull;
@@ -89,10 +91,10 @@ import java.util.zip.ZipEntry;
 import java.util.zip.ZipInputStream;
 
 import static java.lang.System.arraycopy;
-import static org.slf4j.LoggerFactory.getLogger;
-
 public class MainUtil {
 
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
+
     public static List<String> filter(String prefix, List<String> suggestions) {
         if (prefix.isEmpty()) {
             return suggestions;
@@ -438,7 +440,7 @@ public class MainUtil {
                 content = scanner.next().trim();
             }
             if (!content.startsWith("<")) {
-                getLogger(MainUtil.class).debug(content);
+                LOGGER.debug(content);
             }
             if (responseCode == 200) {
                 return url;
@@ -638,7 +640,7 @@ public class MainUtil {
                 return newFile;
             }
         } catch (IOException e) {
-            getLogger(MainUtil.class).debug("Could not save " + resource, e);
+            LOGGER.debug("Could not save " + resource, e);
         }
         return null;
     }
@@ -880,7 +882,7 @@ public class MainUtil {
                 pool.submit(file::delete);
                 Component msg = TranslatableComponent.of("worldedit.schematic.delete.deleted");
                 if (printDebug) {
-                    getLogger(MainUtil.class).debug(msg.toString());
+                    LOGGER.debug(msg.toString());
                 }
             }
         });

worldedit-core/src/main/java/com/boydti/fawe/util/TaskManager.java

@@ -4,6 +4,8 @@ import com.boydti.fawe.Fawe;
 import com.boydti.fawe.beta.implementation.queue.QueueHandler;
 import com.boydti.fawe.config.Settings;
 import com.boydti.fawe.object.RunnableVal;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
+import org.apache.logging.log4j.Logger;
 import org.jetbrains.annotations.NotNull;
 
 import java.util.Collection;
@@ -15,10 +17,10 @@ import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.function.Supplier;
 import javax.annotation.Nullable;
 
-import static org.slf4j.LoggerFactory.getLogger;
-
 public abstract class TaskManager {
 
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
+
     public static TaskManager IMP;
 
     private final ForkJoinPool pool = new ForkJoinPool();
@@ -257,7 +259,7 @@ public abstract class TaskManager {
                     running.wait(timeout);
                     if (running.get() && System.currentTimeMillis() - start > Settings.IMP.QUEUE.DISCARD_AFTER_MS) {
                         new RuntimeException("FAWE is taking a long time to execute a task (might just be a symptom): ").printStackTrace();
-                        getLogger(TaskManager.class).debug("For full debug information use: /fawe threads");
+                        LOGGER.info("For full debug information use: /fawe threads");
                     }
                 }
             }

worldedit-core/src/main/java/com/boydti/fawe/util/TextureUtil.java

@@ -9,6 +9,7 @@ import com.google.gson.reflect.TypeToken;
 import com.google.gson.stream.JsonReader;
 import com.sk89q.worldedit.extent.clipboard.Clipboard;
 import com.sk89q.worldedit.function.mask.Mask;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.util.PropertiesConfiguration;
 import com.sk89q.worldedit.util.report.Unreported;
@@ -20,8 +21,7 @@ import it.unimi.dsi.fastutil.ints.Int2ObjectMap;
 import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
 import it.unimi.dsi.fastutil.ints.IntArraySet;
 import it.unimi.dsi.fastutil.longs.LongArrayList;
-import org.slf4j.Logger;
+import org.apache.logging.log4j.Logger;
-import org.slf4j.LoggerFactory;
 
 import java.awt.image.BufferedImage;
 import java.io.BufferedInputStream;
@@ -51,12 +51,12 @@ import java.util.zip.ZipEntry;
 import java.util.zip.ZipFile;
 import javax.imageio.ImageIO;
 
-import static org.slf4j.LoggerFactory.getLogger;
+import static org.apache.logging.log4j.LogManager.getLogger;
 
 // TODO FIXME
 public class TextureUtil implements TextureHolder {
 
-    private static final Logger log = LoggerFactory.getLogger(TextureUtil.class);
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
 
     private static final int[] FACTORS = new int[766];
 
@@ -355,7 +355,7 @@ public class TextureUtil implements TextureHolder {
         this.folder = folder;
         if (!folder.exists()) {
             try {
-                log.info("Downloading asset jar from Mojang, please wait...");
+                LOGGER.info("Downloading asset jar from Mojang, please wait...");
                 new File(Fawe.imp().getDirectory() + "/" + Settings.IMP.PATHS.TEXTURES + "/" + "/.minecraft/versions/").mkdirs();
                 try (BufferedInputStream in = new BufferedInputStream(new URL("https://launcher.mojang.com/v1/objects/37fd3c903861eeff3bc24b71eed48f828b5269c8/client.jar").openStream());
                      FileOutputStream fileOutputStream = new FileOutputStream(Fawe.imp().getDirectory() + "/" + Settings.IMP.PATHS.TEXTURES + "/" + "/.minecraft/versions/1.16.5.jar")) {
@@ -364,14 +364,14 @@ public class TextureUtil implements TextureHolder {
                     while ((bytesRead = in.read(dataBuffer, 0, 1024)) != -1) {
                         fileOutputStream.write(dataBuffer, 0, bytesRead);
                     }
-                    log.info("Asset jar down has been downloaded successfully.");
+                    LOGGER.info("Asset jar down has been downloaded successfully.");
                 } catch (IOException e) {
-                    log.error("Could not download version jar. Please do so manually by creating a `FastAsyncWorldEdit/textures` folder with `.minecraft/versions` jar in it.");
+                    LOGGER.error("Could not download version jar. Please do so manually by creating a `FastAsyncWorldEdit/textures` folder with `.minecraft/versions` jar in it.");
-                    log.error("If the file exists, please make sure the server has read access to the directory.");
+                    LOGGER.error("If the file exists, please make sure the server has read access to the directory.");
                 }
             } catch (AccessControlException e) {
-                log.error("Could not download asset jar. It's likely your file permission are setup improperly and do not allow fetching data from the Mojang servers.");
+                LOGGER.error("Could not download asset jar. It's likely your file permission are setup improperly and do not allow fetching data from the Mojang servers.");
-                log.error("Please create the following folder manually: `FastAsyncWorldEdit/textures` with `.minecraft/versions` jar in it.");
+                LOGGER.error("Please create the following folder manually: `FastAsyncWorldEdit/textures` with `.minecraft/versions` jar in it.");
 
             }
         }
@@ -643,8 +643,8 @@ public class TextureUtil implements TextureHolder {
                         fileOutputStream.write(dataBuffer, 0, bytesRead);
                     }
                 } catch (IOException e) {
-                    log.error("Could not download version jar. Please do so manually by creating a `FastAsyncWorldEdit/textures` folder with `.minecraft/versions` jar or mods in it.");
+                    LOGGER.error("Could not download version jar. Please do so manually by creating a `FastAsyncWorldEdit/textures` folder with `.minecraft/versions` jar or mods in it.");
-                    log.error("If the file exists, please make sure the server has read access to the directory.");
+                    LOGGER.error("If the file exists, please make sure the server has read access to the directory.");
                 }
             } else {
                 for (File file : files) {

worldedit-core/src/main/java/com/boydti/fawe/util/ThirdPartyManager.java

@@ -1,5 +1,8 @@
 package com.boydti.fawe.util;
 
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
+import org.apache.logging.log4j.Logger;
+
 import java.io.DataInputStream;
 import java.io.IOException;
 import java.net.URL;
@@ -7,8 +10,6 @@ import java.security.MessageDigest;
 import java.security.NoSuchAlgorithmException;
 import java.util.Base64;
 
-import static org.slf4j.LoggerFactory.getLogger;
-
 /** An internal FAWE class not meant for public use. **/
 public enum ThirdPartyManager {
 
@@ -22,6 +23,8 @@ public enum ThirdPartyManager {
 
     ;
 
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
+
     public final String url;
     public final int fileSize;
     public final String digest;
@@ -54,12 +57,12 @@ public enum ThirdPartyManager {
             String jarDigest = Base64.getEncoder().encodeToString(jarDigestBytes);
 
             if (this.digest.equals(jarDigest)) {
-                getLogger(ThirdPartyManager.class).debug("++++ HASH CHECK ++++");
+                LOGGER.debug("++++ HASH CHECK ++++");
-                getLogger(ThirdPartyManager.class).debug(this.url);
+                LOGGER.debug(this.url);
-                getLogger(ThirdPartyManager.class).debug(this.digest);
+                LOGGER.debug(this.digest);
                 return jarBytes;
             } else {
-                getLogger(ThirdPartyManager.class).debug(jarDigest + " | " + url);
+                LOGGER.debug(jarDigest + " | " + url);
                 throw new IllegalStateException("The downloaded jar does not match the hash");
             }
         } catch (NoSuchAlgorithmException e) {

worldedit-core/src/main/java/com/boydti/fawe/util/WEManager.java

@@ -10,12 +10,12 @@ import com.sk89q.worldedit.WorldEditException;
 import com.sk89q.worldedit.entity.Player;
 import com.sk89q.worldedit.extent.AbstractDelegateExtent;
 import com.sk89q.worldedit.extent.Extent;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.regions.Region;
 import com.sk89q.worldedit.util.Location;
 import com.sk89q.worldedit.util.formatting.text.TextComponent;
-import org.slf4j.Logger;
+import org.apache.logging.log4j.Logger;
-import org.slf4j.LoggerFactory;
 
 import java.util.ArrayDeque;
 import java.util.HashSet;
@@ -24,14 +24,14 @@ import java.util.Set;
 
 public class WEManager {
 
-    private static final Logger log = LoggerFactory.getLogger(WEManager.class);
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
 
     public static final WEManager IMP = new WEManager();
 
     public final ArrayDeque<FaweMaskManager> managers = new ArrayDeque<>();
 
     public void cancelEditSafe(AbstractDelegateExtent parent, FaweException reason) throws FaweException {
-        log.warn("CancelEditSafe was hit. Please ignore this message.");
+        LOGGER.warn("CancelEditSafe was hit. Please ignore this message.");
         Extent currentExtent = parent.getExtent();
         if (!(currentExtent instanceof NullExtent)) {
             parent.extent = new NullExtent(parent.extent, reason);
@@ -123,10 +123,10 @@ public class WEManager {
                 player.printError(TextComponent.of("Missing permission " +  "fawe." + manager.getKey()));
             }
         }
-        log.debug("Region info for " + player.getName());
+        LOGGER.debug("Region info for " + player.getName());
-        log.debug("There are " + backupRegions.size() + " backupRegions being added to Regions. Regions has " + regions.size() + " before backupRegions are added");
+        LOGGER.debug("There are " + backupRegions.size() + " backupRegions being added to Regions. Regions has " + regions.size() + " before backupRegions are added");
         regions.addAll(backupRegions);
-        log.debug("Finished adding regions for " + player.getName());
+        LOGGER.debug("Finished adding regions for " + player.getName());
         if (!masks.isEmpty()) {
             player.setMeta("lastMask", masks);
         } else {

worldedit-core/src/main/java/com/sk89q/minecraft/util/commands/CommandsManager.java

@@ -20,8 +20,8 @@
 package com.sk89q.minecraft.util.commands;
 
 import com.sk89q.util.StringUtil;
-import org.slf4j.Logger;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
-import org.slf4j.LoggerFactory;
+import org.apache.logging.log4j.Logger;
 
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
@@ -64,8 +64,7 @@ import java.util.Set;
 @Deprecated
 public abstract class CommandsManager<T> {
 
-    protected static final Logger logger =
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
-            LoggerFactory.getLogger(CommandsManager.class);
 
     /**
      * Mapping of commands (including aliases) with a description. Root
@@ -144,7 +143,7 @@ public abstract class CommandsManager<T> {
                 return registerMethods(cls, parent, obj);
             }
         } catch (InvocationTargetException | InstantiationException | IllegalAccessException e) {
-            logger.error("Failed to register commands", e);
+            LOGGER.error("Failed to register commands", e);
         }
         return null;
     }
@@ -525,7 +524,7 @@ public abstract class CommandsManager<T> {
         try {
             method.invoke(instance, methodArgs);
         } catch (IllegalArgumentException | IllegalAccessException e) {
-            logger.error("Failed to execute command", e);
+            LOGGER.error("Failed to execute command", e);
         } catch (InvocationTargetException e) {
             if (e.getCause() instanceof CommandException) {
                 throw (CommandException) e.getCause();

worldedit-core/src/main/java/com/sk89q/minecraft/util/commands/SimpleInjector.java

@@ -19,15 +19,15 @@
 
 package com.sk89q.minecraft.util.commands;
 
-import org.slf4j.Logger;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
-import org.slf4j.LoggerFactory;
+import org.apache.logging.log4j.Logger;
 
 import java.lang.reflect.Constructor;
 import java.lang.reflect.InvocationTargetException;
 
 public class SimpleInjector implements Injector {
 
-    private static final Logger log = LoggerFactory.getLogger(SimpleInjector.class);
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
     private Object[] args;
     private Class<?>[] argClasses;
 
@@ -46,7 +46,7 @@ public class SimpleInjector implements Injector {
             ctr.setAccessible(true);
             return ctr.newInstance(args);
         } catch (NoSuchMethodException | IllegalAccessException | InstantiationException | InvocationTargetException e) {
-            log.error("Error initializing commands class " + clazz, e);
+            LOGGER.error("Error initializing commands class " + clazz, e);
             return null;
         }
     }

worldedit-core/src/main/java/com/sk89q/worldedit/EditSession.java

@@ -95,6 +95,7 @@ import com.sk89q.worldedit.internal.expression.Expression;
 import com.sk89q.worldedit.internal.expression.ExpressionException;
 import com.sk89q.worldedit.internal.expression.ExpressionTimeoutException;
 import com.sk89q.worldedit.internal.expression.LocalSlot.Variable;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.math.BlockVector2;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.math.MathUtils;
@@ -134,10 +135,9 @@ import com.sk89q.worldedit.world.block.BlockStateHolder;
 import com.sk89q.worldedit.world.block.BlockType;
 import com.sk89q.worldedit.world.block.BlockTypes;
 import com.sk89q.worldedit.world.registry.LegacyMapper;
+import org.apache.logging.log4j.Logger;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
 import java.io.IOException;
 import java.util.ArrayList;
@@ -170,7 +170,7 @@ import static com.sk89q.worldedit.regions.Regions.minimumBlockY;
 @SuppressWarnings({"FieldCanBeLocal"})
 public class EditSession extends PassthroughExtent implements AutoCloseable {
 
-    private static final Logger log = LoggerFactory.getLogger(EditSession.class);
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
 
     /**
      * Used by {@link EditSession#setBlock(BlockVector3, BlockStateHolder, Stage)} to
@@ -2555,7 +2555,7 @@ public class EditSession extends PassthroughExtent implements AutoCloseable {
                     timedOut[0] = timedOut[0] + 1;
                     return null;
                 } catch (Exception e) {
-                    log.warn("Failed to create shape", e);
+                    LOGGER.warn("Failed to create shape", e);
                     return null;
                 }
             }
@@ -3091,7 +3091,7 @@ public class EditSession extends PassthroughExtent implements AutoCloseable {
                     timedOut.getAndIncrement();
                     return null;
                 } catch (Exception e) {
-                    log.warn("Failed to create shape", e);
+                    LOGGER.warn("Failed to create shape", e);
                     return null;
                 }
             }

worldedit-core/src/main/java/com/sk89q/worldedit/LocalConfiguration.java

@@ -24,6 +24,7 @@ import com.sk89q.worldedit.extension.input.InputParseException;
 import com.sk89q.worldedit.extent.NullExtent;
 import com.sk89q.worldedit.function.mask.BlockMask;
 import com.sk89q.worldedit.function.mask.BlockMaskBuilder;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.util.formatting.component.TextUtils;
 import com.sk89q.worldedit.util.io.file.ArchiveNioSupports;
 import com.sk89q.worldedit.util.logging.LogFormat;
@@ -33,8 +34,7 @@ import com.sk89q.worldedit.world.registry.LegacyMapper;
 import com.sk89q.worldedit.world.snapshot.SnapshotRepository;
 import com.sk89q.worldedit.world.snapshot.experimental.SnapshotDatabase;
 import com.sk89q.worldedit.world.snapshot.experimental.fs.FileSystemSnapshotDatabase;
-import org.slf4j.Logger;
+import org.apache.logging.log4j.Logger;
-import org.slf4j.LoggerFactory;
 
 import java.io.File;
 import java.io.IOException;
@@ -51,7 +51,7 @@ import java.util.Set;
  */
 public abstract class LocalConfiguration {
 
-    private static final Logger LOGGER = LoggerFactory.getLogger(LocalConfiguration.class);
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
 
     public boolean profile = false;
     public boolean traceUnflushedSessions = false;

worldedit-core/src/main/java/com/sk89q/worldedit/WorldEdit.java

@@ -46,6 +46,7 @@ import com.sk89q.worldedit.function.pattern.Pattern;
 import com.sk89q.worldedit.internal.SchematicsEventListener;
 import com.sk89q.worldedit.internal.expression.Expression;
 import com.sk89q.worldedit.internal.expression.invoke.ReturnException;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.scripting.CraftScriptContext;
 import com.sk89q.worldedit.scripting.CraftScriptEngine;
@@ -71,8 +72,7 @@ import com.sk89q.worldedit.world.block.BlockType;
 import com.sk89q.worldedit.world.registry.BundledBlockData;
 import com.sk89q.worldedit.world.registry.BundledItemData;
 import com.sk89q.worldedit.world.registry.LegacyMapper;
-import org.slf4j.Logger;
+import org.apache.logging.log4j.Logger;
-import org.slf4j.LoggerFactory;
 
 import java.io.DataInputStream;
 import java.io.File;
@@ -109,7 +109,10 @@ import static com.sk89q.worldedit.event.platform.Interaction.OPEN;
  */
 public final class WorldEdit {
 
-    public static final Logger logger = LoggerFactory.getLogger(WorldEdit.class);
+    /**
+     * This is for internal use only.
+     */
+    public static final Logger logger = LogManagerCompat.getLogger();
 
     private static final WorldEdit instance = new WorldEdit();
     private static String version;

worldedit-core/src/main/java/com/sk89q/worldedit/command/SchematicCommands.java

@@ -45,6 +45,7 @@ import com.sk89q.worldedit.extent.clipboard.io.ClipboardFormats;
 import com.sk89q.worldedit.extent.clipboard.io.ClipboardReader;
 import com.sk89q.worldedit.extent.clipboard.io.ClipboardWriter;
 import com.sk89q.worldedit.function.operation.Operations;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.math.transform.Transform;
 import com.sk89q.worldedit.session.ClipboardHolder;
 import com.sk89q.worldedit.util.formatting.component.ErrorFormat;
@@ -58,14 +59,13 @@ import com.sk89q.worldedit.util.formatting.text.event.HoverEvent;
 import com.sk89q.worldedit.util.formatting.text.format.TextColor;
 import com.sk89q.worldedit.util.io.Closer;
 import com.sk89q.worldedit.util.io.file.FilenameException;
+import org.apache.logging.log4j.Logger;
 import org.enginehub.piston.annotation.Command;
 import org.enginehub.piston.annotation.CommandContainer;
 import org.enginehub.piston.annotation.param.Arg;
 import org.enginehub.piston.annotation.param.ArgFlag;
 import org.enginehub.piston.annotation.param.Switch;
 import org.enginehub.piston.exception.StopExecutionException;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
 import java.io.BufferedInputStream;
 import java.io.BufferedOutputStream;
@@ -102,7 +102,7 @@ import static com.google.common.base.Preconditions.checkNotNull;
 @CommandContainer(superTypes = CommandPermissionsConditionGenerator.Registration.class)
 public class SchematicCommands {
 
-    private static final Logger log = LoggerFactory.getLogger(SchematicCommands.class);
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
     private final WorldEdit worldEdit;
 
     /**
@@ -304,7 +304,7 @@ public class SchematicCommands {
             actor.printError("Unknown filename: " + filename);
         } catch (URISyntaxException | IOException e) {
             actor.printError("File could not be read or it does not exist: " + e.getMessage());
-            log.warn("Failed to load a saved clipboard", e);
+            LOGGER.warn("Failed to load a saved clipboard", e);
         } finally {
             if (in != null) {
                 try {
@@ -701,7 +701,7 @@ public class SchematicCommands {
                 ClipboardReader reader = closer.register(format.getReader(bis));
 
                 Clipboard clipboard = reader.read();
-                log.info(actor.getName() + " loaded " + file.getCanonicalPath());
+                LOGGER.info(actor.getName() + " loaded " + file.getCanonicalPath());
                 return new ClipboardHolder(clipboard);
             }
         }
@@ -785,7 +785,7 @@ public class SchematicCommands {
                     TextComponent noSlotsErr = TextComponent.of( //TODO - to be moved into captions/translatablecomponents
                         String.format("You have " + numFiles + "/" + limit + " saved schematics. Delete some to save this one!",
                             TextColor.RED));
-                    log.info(actor.getName() + " failed to save " + file.getCanonicalPath() + " - too many schematics!");
+                    LOGGER.info(actor.getName() + " failed to save " + file.getCanonicalPath() + " - too many schematics!");
                     throw new WorldEditException(noSlotsErr) {
                     };
                 }
@@ -838,7 +838,7 @@ public class SchematicCommands {
                                 "You're about to be at " + String.format("%.1f", curKb) + "kb of schematics. ("
                                     + String.format("%dkb", allocatedKb) + " available) Delete some first to save this one!",
                                 TextColor.RED);
-                            log.info(actor.getName() + " failed to save " + SCHEMATIC_NAME + " - not enough space!");
+                            LOGGER.info(actor.getName() + " failed to save " + SCHEMATIC_NAME + " - not enough space!");
                             throw new WorldEditException(notEnoughKbErr) {
                             };
                         }
@@ -860,7 +860,7 @@ public class SchematicCommands {
                                 + " schematic file slots left.", TextColor.GRAY);
                         actor.print(slotsRemainingNotif);
                     }
-                    log.info(actor.getName() + " saved " + file.getCanonicalPath());
+                    LOGGER.info(actor.getName() + " saved " + file.getCanonicalPath());
                 } else {
                     actor.printError(TranslatableComponent.of("fawe.cancel.worldedit.cancel.reason.manual"));
                 }

worldedit-core/src/main/java/com/sk89q/worldedit/command/tool/SelectionWand.java

@@ -26,16 +26,16 @@ import com.sk89q.worldedit.entity.Player;
 import com.sk89q.worldedit.extension.platform.Actor;
 import com.sk89q.worldedit.extension.platform.Platform;
 import com.sk89q.worldedit.extension.platform.permission.ActorSelectorLimits;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.regions.RegionSelector;
 import com.sk89q.worldedit.util.Location;
-import org.slf4j.Logger;
+import org.apache.logging.log4j.Logger;
-import org.slf4j.LoggerFactory;
 
 public enum SelectionWand implements DoubleActionBlockTool {
     INSTANCE;
 
-    private static final Logger logger = LoggerFactory.getLogger(SelectionWand.class);
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
 
     @Override
     public boolean actSecondary(Platform server, LocalConfiguration config, Player player, LocalSession session, Location clicked) {
@@ -43,7 +43,7 @@ public enum SelectionWand implements DoubleActionBlockTool {
         BlockVector3 blockPoint = clicked.toVector().toBlockPoint();
         if (selector.selectPrimary(blockPoint, ActorSelectorLimits.forActor(player))) {
             if (Settings.IMP.EXPERIMENTAL.OTHER) {
-                logger.info("actSecondary Hit and about to explain with explainPrimarySelection");
+                LOGGER.info("actSecondary Hit and about to explain with explainPrimarySelection");
             }
             selector.explainPrimarySelection(player, session, blockPoint);
         }
@@ -57,7 +57,7 @@ public enum SelectionWand implements DoubleActionBlockTool {
 
         if (selector.selectSecondary(blockPoint, ActorSelectorLimits.forActor(player))) {
             if (Settings.IMP.EXPERIMENTAL.OTHER) {
-                logger.info("actPrimary Hit and about to explain with explainSecondarySelection");
+                LOGGER.info("actPrimary Hit and about to explain with explainSecondarySelection");
             }
             selector.explainSecondarySelection(player, session, blockPoint);
         }

worldedit-core/src/main/java/com/sk89q/worldedit/command/util/AsyncCommandBuilder.java

@@ -25,17 +25,17 @@ import com.google.common.util.concurrent.ListenableFuture;
 import com.google.common.util.concurrent.ListeningExecutorService;
 import com.sk89q.worldedit.extension.platform.Actor;
 import com.sk89q.worldedit.internal.command.exception.ExceptionConverter;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.util.formatting.component.ErrorFormat;
 import com.sk89q.worldedit.util.formatting.text.Component;
 import com.sk89q.worldedit.util.formatting.text.TextComponent;
 import com.sk89q.worldedit.util.formatting.text.format.TextColor;
 import com.sk89q.worldedit.util.task.FutureForwardingTask;
 import com.sk89q.worldedit.util.task.Supervisor;
+import org.apache.logging.log4j.Logger;
 import org.enginehub.piston.exception.CommandException;
 import org.enginehub.piston.exception.CommandExecutionException;
 import org.jetbrains.annotations.Nullable;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
 import java.util.concurrent.Callable;
 import java.util.function.Consumer;
@@ -45,7 +45,7 @@ import static com.google.common.base.Preconditions.checkNotNull;
 
 public final class AsyncCommandBuilder<T> {
 
-    private static final Logger logger = LoggerFactory.getLogger(AsyncCommandBuilder.class);
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
 
     private final Callable<T> callable;
     private final Actor sender;
@@ -174,7 +174,7 @@ public final class AsyncCommandBuilder<T> {
                 }
             } catch (Throwable unknown) {
                 sender.printError(failure.append(TextComponent.of(": Unknown error. Please see console.")));
-                logger.error("Uncaught exception occurred in task: " + description, orig);
+                LOGGER.error("Uncaught exception occurred in task: " + description, orig);
             }
         }
         return result;

worldedit-core/src/main/java/com/sk89q/worldedit/command/util/annotation/Confirm.java

@@ -20,8 +20,6 @@ import org.enginehub.piston.inject.InjectAnnotation;
 import org.enginehub.piston.inject.InjectedValueAccess;
 import org.enginehub.piston.inject.Key;
 import org.enginehub.piston.inject.MemoizingValueAccess;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
 import java.lang.annotation.ElementType;
 import java.lang.annotation.Retention;
@@ -160,7 +158,6 @@ public @interface Confirm {
                     final MemoizingValueAccess memoizingValueAccess;
                     if (!(context instanceof MemoizingValueAccess)) {
                         if (!context.getClass().getSimpleName().contains("AutoValue_CommandParametersImpl")) {
-                            LoggerFactory.getLogger(Confirm.class).warn("InjectedValueAccess " + context.getClass().getName() + " given to Confirm");
                             return true;
                         }
                         memoizingValueAccess = (MemoizingValueAccess) Reflect.injectedValues.get(context);

worldedit-core/src/main/java/com/sk89q/worldedit/extension/platform/PlatformCommandManager.java

@@ -121,6 +121,7 @@ import com.sk89q.worldedit.internal.command.ConfirmHandler;
 import com.sk89q.worldedit.internal.command.MethodInjector;
 import com.sk89q.worldedit.internal.command.exception.ExceptionConverter;
 import com.sk89q.worldedit.internal.command.exception.WorldEditExceptionConverter;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.internal.util.Substring;
 import com.sk89q.worldedit.regions.Region;
 import com.sk89q.worldedit.session.SessionKey;
@@ -133,6 +134,7 @@ import com.sk89q.worldedit.util.formatting.text.format.TextColor;
 import com.sk89q.worldedit.util.logging.DynamicStreamHandler;
 import com.sk89q.worldedit.util.logging.LogFormat;
 import com.sk89q.worldedit.world.World;
+import org.apache.logging.log4j.Logger;
 import org.enginehub.piston.Command;
 import org.enginehub.piston.CommandManager;
 import org.enginehub.piston.converter.ArgumentConverter;
@@ -155,8 +157,6 @@ import org.enginehub.piston.suggestion.Suggestion;
 import org.enginehub.piston.util.HelpGenerator;
 import org.enginehub.piston.util.ValueProvider;
 import org.jetbrains.annotations.NotNull;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
 import java.io.File;
 import java.io.IOException;
@@ -185,7 +185,7 @@ import static com.google.common.base.Preconditions.checkNotNull;
 public final class PlatformCommandManager {
 
     public static final Pattern COMMAND_CLEAN_PATTERN = Pattern.compile("^[/]+");
-    private static final Logger log = LoggerFactory.getLogger(PlatformCommandManager.class);
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
     private static final java.util.logging.Logger COMMAND_LOG =
         java.util.logging.Logger.getLogger("com.sk89q.worldedit.CommandLog");
 
@@ -567,7 +567,7 @@ public final class PlatformCommandManager {
     }
 
     void registerCommandsWith(Platform platform) {
-        log.info("Registering commands with " + platform.getClass().getCanonicalName());
+        LOGGER.info("Registering commands with " + platform.getClass().getCanonicalName());
 
 
         LocalConfiguration config = platform.getConfiguration();
@@ -582,12 +582,12 @@ public final class PlatformCommandManager {
             File file = new File(config.getWorkingDirectory(), path);
             COMMAND_LOG.setLevel(Level.ALL);
 
-            log.info("Logging WorldEdit commands to " + file.getAbsolutePath());
+            LOGGER.info("Logging WorldEdit commands to " + file.getAbsolutePath());
 
             try {
                 dynamicHandler.setHandler(new FileHandler(file.getAbsolutePath(), true));
             } catch (IOException e) {
-                log.warn("Could not use command log file " + path + ": " + e.getMessage());
+                LOGGER.warn("Could not use command log file " + path + ": " + e.getMessage());
             }
 
             dynamicHandler.setFormatter(new LogFormat(config.logFormat));
@@ -828,7 +828,7 @@ public final class PlatformCommandManager {
     private void handleUnknownException(Actor actor, Throwable t) {
         actor.printError(TranslatableComponent.of("worldedit.command.error.report"));
         actor.print(TextComponent.of(t.getClass().getName() + ": " + t.getMessage()));
-        log.error("An unexpected error while handling a WorldEdit command", t);
+        LOGGER.error("An unexpected error while handling a WorldEdit command", t);
     }
 
     @Subscribe
@@ -848,7 +848,7 @@ public final class PlatformCommandManager {
                 suggestions = commandManager.getSuggestions(access, argStrings);
             } catch (Throwable t) { // catch errors which are *not* command exceptions generated by parsers/suggesters
                 if (!(t instanceof CommandException)) {
-                    log.debug("Unexpected error occurred while generating suggestions for input: " + arguments, t);
+                    LOGGER.debug("Unexpected error occurred while generating suggestions for input: " + arguments, t);
                     return;
                 }
                 throw t;

worldedit-core/src/main/java/com/sk89q/worldedit/extension/platform/PlatformManager.java

@@ -41,6 +41,7 @@ import com.sk89q.worldedit.event.platform.Interaction;
 import com.sk89q.worldedit.event.platform.PlatformInitializeEvent;
 import com.sk89q.worldedit.event.platform.PlatformReadyEvent;
 import com.sk89q.worldedit.event.platform.PlayerInputEvent;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.math.Vector3;
 import com.sk89q.worldedit.session.request.Request;
 import com.sk89q.worldedit.util.Location;
@@ -48,8 +49,7 @@ import com.sk89q.worldedit.util.SideEffect;
 import com.sk89q.worldedit.util.eventbus.Subscribe;
 import com.sk89q.worldedit.util.formatting.text.TranslatableComponent;
 import com.sk89q.worldedit.world.World;
-import org.slf4j.Logger;
+import org.apache.logging.log4j.Logger;
-import org.slf4j.LoggerFactory;
 
 import java.util.ArrayList;
 import java.util.Collection;
@@ -71,7 +71,7 @@ import static com.google.common.base.Preconditions.checkNotNull;
  */
 public class PlatformManager {
 
-    private static final Logger logger = LoggerFactory.getLogger(PlatformManager.class);
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
 
     private final WorldEdit worldEdit;
     private final PlatformCommandManager platformCommandManager;
@@ -104,7 +104,7 @@ public class PlatformManager {
     public synchronized void register(Platform platform) {
         checkNotNull(platform);
 
-        logger.info("Got request to register " + platform.getClass() + " with WorldEdit [" + super.toString() + "]");
+        LOGGER.info("Got request to register " + platform.getClass() + " with WorldEdit [" + super.toString() + "]");
 
         // Just add the platform to the list of platforms: we'll pick favorites
         // once all the platforms have been loaded
@@ -113,7 +113,7 @@ public class PlatformManager {
         // Make sure that versions are in sync
         if (firstSeenVersion != null) {
             if (!firstSeenVersion.equals(platform.getVersion())) {
-                logger.warn("Multiple ports of WorldEdit are installed but they report different versions ({} and {}). "
+                LOGGER.warn("Multiple ports of WorldEdit are installed but they report different versions ({} and {}). "
                                 + "If these two versions are truly different, then you may run into unexpected crashes and errors.", firstSeenVersion, platform.getVersion());
             }
         } else {
@@ -135,7 +135,7 @@ public class PlatformManager {
         boolean removed = platforms.remove(platform);
 
         if (removed) {
-            logger.info("Unregistering " + platform.getClass().getCanonicalName() + " from WorldEdit");
+            LOGGER.info("Unregistering " + platform.getClass().getCanonicalName() + " from WorldEdit");
 
             boolean choosePreferred = false;
 
@@ -349,7 +349,7 @@ public class PlatformManager {
             VirtualWorld virtual = session.getVirtualWorld();
             if (virtual != null) {
                 if (Settings.IMP.EXPERIMENTAL.OTHER) {
-                    logger.info("virtualWorld was not null in handlePlayerInput()");
+                    LOGGER.info("virtualWorld was not null in handlePlayerInput()");
                 }
 
                 virtual.handleBlockInteract(player, vector.toBlockPoint(), event);
@@ -423,7 +423,7 @@ public class PlatformManager {
         VirtualWorld virtual = session.getVirtualWorld();
         if (virtual != null) {
             if (Settings.IMP.EXPERIMENTAL.OTHER) {
-                logger.info("virtualWorld was not null in handlePlayerInput()");
+                LOGGER.info("virtualWorld was not null in handlePlayerInput()");
             }
             virtual.handlePlayerInput(player,  event);
             if (event.isCancelled()) {

worldedit-core/src/main/java/com/sk89q/worldedit/extension/platform/binding/Bindings.java

@@ -2,8 +2,10 @@ package com.sk89q.worldedit.extension.platform.binding;
 
 import com.boydti.fawe.util.StringMan;
 import com.sk89q.worldedit.WorldEdit;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.util.formatting.text.Component;
 import com.sk89q.worldedit.util.formatting.text.TextComponent;
+import org.apache.logging.log4j.Logger;
 import org.enginehub.piston.CommandManager;
 import org.enginehub.piston.converter.ArgumentConverter;
 import org.enginehub.piston.converter.ConversionResult;
@@ -20,10 +22,10 @@ import java.lang.reflect.Method;
 import java.util.Optional;
 import java.util.function.Function;
 
-import static org.slf4j.LoggerFactory.getLogger;
-
 public class Bindings {
 
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
+
     private final WorldEdit worldEdit;
 
     public Bindings(WorldEdit worldEdit) {
@@ -57,7 +59,7 @@ public class Bindings {
             Annotation annotation = annotations[0] == binding ? annotations[1] : annotations[0];
             key = Key.of(ret, annotation);
         } else {
-            getLogger(Bindings.class).debug("Cannot annotate: " + method + " with " + StringMan.getString(annotations));
+            LOGGER.debug("Cannot annotate: " + method + " with " + StringMan.getString(annotations));
             return false;
         }
 

worldedit-core/src/main/java/com/sk89q/worldedit/extent/AbstractDelegateExtent.java

@@ -32,6 +32,7 @@ import com.sk89q.worldedit.entity.Entity;
 import com.sk89q.worldedit.extent.buffer.ForgetfulExtentBuffer;
 import com.sk89q.worldedit.function.operation.Operation;
 import com.sk89q.worldedit.function.operation.OperationQueue;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.regions.Region;
 import com.sk89q.worldedit.util.Location;
@@ -39,23 +40,22 @@ import com.sk89q.worldedit.world.biome.BiomeType;
 import com.sk89q.worldedit.world.block.BaseBlock;
 import com.sk89q.worldedit.world.block.BlockState;
 import com.sk89q.worldedit.world.block.BlockStateHolder;
+import org.apache.logging.log4j.Logger;
 import org.jetbrains.annotations.Range;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
 import java.util.List;
 import java.util.UUID;
 import javax.annotation.Nullable;
 
 import static com.google.common.base.Preconditions.checkNotNull;
-import static org.slf4j.LoggerFactory.getLogger;
+import static org.apache.logging.log4j.LogManager.getLogger;
 
 /**
  * A base class for {@link Extent}s that merely passes extents onto another.
  */
 public class AbstractDelegateExtent implements Extent {
 
-    private static final Logger logger = LoggerFactory.getLogger(AbstractDelegateExtent.class);
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
 
     //Not safe for public usage
     public Extent extent;
@@ -298,11 +298,11 @@ public class AbstractDelegateExtent implements Extent {
     @Override
     public Extent addProcessor(IBatchProcessor processor) {
         if (Settings.IMP.EXPERIMENTAL.OTHER) {
-            logger.info("addProcessor Info: \t " + processor.getClass().getName());
+            LOGGER.info("addProcessor Info: \t " + processor.getClass().getName());
-            logger.info("The following is not an error or a crash:");
+            LOGGER.info("The following is not an error or a crash:");
             StackTraceElement[] stackTrace = Thread.currentThread().getStackTrace();
             for (StackTraceElement stackTraceElement : stackTrace) {
-                logger.info(stackTraceElement.toString());
+                LOGGER.info(stackTraceElement.toString());
             }
 
         }
@@ -316,11 +316,11 @@ public class AbstractDelegateExtent implements Extent {
     @Override
     public Extent addPostProcessor(IBatchProcessor processor) {
         if (Settings.IMP.EXPERIMENTAL.OTHER) {
-            logger.info("addPostProcessor Info: \t " + processor.getClass().getName());
+            LOGGER.info("addPostProcessor Info: \t " + processor.getClass().getName());
-            logger.info("The following is not an error or a crash:");
+            LOGGER.info("The following is not an error or a crash:");
             StackTraceElement[] stackTrace = Thread.currentThread().getStackTrace();
             for (StackTraceElement stackTraceElement : stackTrace) {
-                logger.info(stackTraceElement.toString());
+                LOGGER.info(stackTraceElement.toString());
             }
 
         }

worldedit-core/src/main/java/com/sk89q/worldedit/extent/clipboard/io/FastSchematicReader.java

@@ -40,6 +40,7 @@ import com.sk89q.worldedit.extension.platform.Capability;
 import com.sk89q.worldedit.extent.clipboard.BlockArrayClipboard;
 import com.sk89q.worldedit.extent.clipboard.Clipboard;
 import com.sk89q.worldedit.internal.Constants;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.util.Location;
 import com.sk89q.worldedit.world.DataFixer;
@@ -52,8 +53,7 @@ import com.sk89q.worldedit.world.entity.EntityType;
 import com.sk89q.worldedit.world.entity.EntityTypes;
 import net.jpountz.lz4.LZ4BlockInputStream;
 import net.jpountz.lz4.LZ4BlockOutputStream;
-import org.slf4j.Logger;
+import org.apache.logging.log4j.Logger;
-import org.slf4j.LoggerFactory;
 
 import java.io.IOException;
 import java.util.ArrayList;
@@ -71,7 +71,7 @@ import static com.google.common.base.Preconditions.checkNotNull;
  */
 public class FastSchematicReader extends NBTSchematicReader {
 
-    private static final Logger log = LoggerFactory.getLogger(FastSchematicReader.class);
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
     private final NBTInputStream inputStream;
     private DataFixer fixer;
     private int dataVersion = -1;
@@ -183,7 +183,7 @@ public class FastSchematicReader extends NBTSchematicReader {
                 try {
                     state = BlockState.get(palettePart);
                 } catch (InputParseException ignored) {
-                    log.warn("Invalid BlockState in palette: " + palettePart + ". Block will be replaced with air.");
+                    LOGGER.warn("Invalid BlockState in palette: " + palettePart + ". Block will be replaced with air.");
                     state = BlockTypes.AIR.getDefaultState();
                 }
                 int index = (int) entry.getValue();
@@ -395,14 +395,14 @@ public class FastSchematicReader extends NBTSchematicReader {
                             for (Entity e : clipboard.getEntities()) {
                                 clipboard.removeEntity(e);
                             }
-                            log.error("Detected schematic entity outside clipboard region. FAWE will not load entities. "
+                            LOGGER.error("Detected schematic entity outside clipboard region. FAWE will not load entities. "
                                 + "Please try loading the schematic with the format \"legacyentity\"");
                             break;
                         }
                     }
                     clipboard.createEntity(loc.setPosition(loc.subtract(min.toVector3())), state);
                 } else {
-                    log.debug("Invalid entity: " + id);
+                    LOGGER.debug("Invalid entity: " + id);
                 }
             }
         }

worldedit-core/src/main/java/com/sk89q/worldedit/extent/clipboard/io/MCEditSchematicReader.java

@@ -42,6 +42,7 @@ import com.sk89q.worldedit.extent.clipboard.io.legacycompat.NoteBlockCompatibili
 import com.sk89q.worldedit.extent.clipboard.io.legacycompat.Pre13HangingCompatibilityHandler;
 import com.sk89q.worldedit.extent.clipboard.io.legacycompat.SignCompatibilityHandler;
 import com.sk89q.worldedit.extent.clipboard.io.legacycompat.SkullBlockCompatibilityHandler;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.regions.CuboidRegion;
 import com.sk89q.worldedit.regions.Region;
@@ -52,8 +53,7 @@ import com.sk89q.worldedit.world.entity.EntityType;
 import com.sk89q.worldedit.world.entity.EntityTypes;
 import com.sk89q.worldedit.world.registry.LegacyMapper;
 import com.sk89q.worldedit.world.storage.NBTConversions;
-import org.slf4j.Logger;
+import org.apache.logging.log4j.Logger;
-import org.slf4j.LoggerFactory;
 
 import java.io.IOException;
 import java.util.ArrayList;
@@ -71,7 +71,7 @@ import static com.google.common.base.Preconditions.checkNotNull;
  */
 public class MCEditSchematicReader extends NBTSchematicReader {
 
-    private static final Logger log = LoggerFactory.getLogger(MCEditSchematicReader.class);
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
     private final NBTInputStream inputStream;
     private final DataFixer fixer;
     private static final ImmutableList<NBTCompatibilityHandler> COMPATIBILITY_HANDLERS
@@ -253,7 +253,7 @@ public class MCEditSchematicReader extends NBTSchematicReader {
                             byte data = blockData[index];
                             int combined = block << 8 | data;
                             if (unknownBlocks.add(combined)) {
-                                log.warn("Unknown block when loading schematic: "
+                                LOGGER.warn("Unknown block when loading schematic: "
                                     + block + ":" + data + ". This is most likely a bad schematic.");
                             }
                         }
@@ -289,7 +289,7 @@ public class MCEditSchematicReader extends NBTSchematicReader {
                             BaseEntity state = new BaseEntity(entityType, compound);
                             clipboard.createEntity(location, state);
                         } else {
-                            log.warn("Unknown entity when pasting schematic: " + id.toLowerCase(Locale.ROOT));
+                            LOGGER.warn("Unknown entity when pasting schematic: " + id.toLowerCase(Locale.ROOT));
                         }
                     }
                 }

worldedit-core/src/main/java/com/sk89q/worldedit/extent/clipboard/io/SpongeSchematicReader.java

@@ -40,6 +40,7 @@ import com.sk89q.worldedit.extension.platform.Platform;
 import com.sk89q.worldedit.extent.clipboard.BlockArrayClipboard;
 import com.sk89q.worldedit.extent.clipboard.Clipboard;
 import com.sk89q.worldedit.internal.Constants;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.regions.CuboidRegion;
 import com.sk89q.worldedit.regions.Region;
@@ -52,8 +53,7 @@ import com.sk89q.worldedit.world.block.BlockTypes;
 import com.sk89q.worldedit.world.entity.EntityType;
 import com.sk89q.worldedit.world.entity.EntityTypes;
 import com.sk89q.worldedit.world.storage.NBTConversions;
-import org.slf4j.Logger;
+import org.apache.logging.log4j.Logger;
-import org.slf4j.LoggerFactory;
 
 import java.io.IOException;
 import java.util.HashMap;
@@ -70,7 +70,7 @@ import static com.google.common.base.Preconditions.checkNotNull;
  */
 public class SpongeSchematicReader extends NBTSchematicReader {
 
-    private static final Logger log = LoggerFactory.getLogger(SpongeSchematicReader.class);
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
     private final NBTInputStream inputStream;
     private DataFixer fixer = null;
     private int schematicVersion = -1;
@@ -102,21 +102,21 @@ public class SpongeSchematicReader extends NBTSchematicReader {
         } else if (schematicVersion == 2) {
             dataVersion = requireTag(schematic, "DataVersion", IntTag.class).getValue();
             if (dataVersion < 0) {
-                log.warn("Schematic has an unknown data version ({}). Data may be incompatible.",
+                LOGGER.warn("Schematic has an unknown data version ({}). Data may be incompatible.",
                     dataVersion);
                 // Do not DFU unknown data
                 dataVersion = liveDataVersion;
             }
             if (dataVersion > liveDataVersion) {
-                log.warn("Schematic was made in a newer Minecraft version ({} > {}). Data may be incompatible.",
+                LOGGER.warn("Schematic was made in a newer Minecraft version ({} > {}). Data may be incompatible.",
                     dataVersion, liveDataVersion);
             } else if (dataVersion < liveDataVersion) {
                 fixer = platform.getDataFixer();
                 if (fixer != null) {
-                    log.debug("Schematic was made in an older Minecraft version ({} < {}), will attempt DFU.",
+                    LOGGER.debug("Schematic was made in an older Minecraft version ({} < {}), will attempt DFU.",
                         dataVersion, liveDataVersion);
                 } else {
-                    log.info("Schematic was made in an older Minecraft version ({} < {}), but DFU is not available. Data may be incompatible.",
+                    LOGGER.info("Schematic was made in an older Minecraft version ({} < {}), but DFU is not available. Data may be incompatible.",
                         dataVersion, liveDataVersion);
                 }
             }
@@ -217,7 +217,7 @@ public class SpongeSchematicReader extends NBTSchematicReader {
             try {
                 state = WorldEdit.getInstance().getBlockFactory().parseFromInput(palettePart, parserContext).toImmutableState();
             } catch (InputParseException e) {
-                log.warn("Invalid BlockState in palette: " + palettePart + ". Block will be replaced with air.");
+                LOGGER.warn("Invalid BlockState in palette: " + palettePart + ". Block will be replaced with air.");
                 state = BlockTypes.AIR.getDefaultState();
             }
             palette.put(id, state);
@@ -327,7 +327,7 @@ public class SpongeSchematicReader extends NBTSchematicReader {
             }
             BiomeType biome = BiomeTypes.get(key);
             if (biome == null) {
-                log.warn("Unknown biome type :" + key
+                LOGGER.warn("Unknown biome type :" + key
                     + " in palette. Are you missing a mod or using a schematic made in a newer version of Minecraft?");
             }
             Tag idTag = palettePart.getValue();
@@ -396,7 +396,7 @@ public class SpongeSchematicReader extends NBTSchematicReader {
                 BaseEntity state = new BaseEntity(entityType, entityTag);
                 clipboard.createEntity(location, state);
             } else {
-                log.warn("Unknown entity when pasting schematic: " + id);
+                LOGGER.warn("Unknown entity when pasting schematic: " + id);
             }
         }
     }

worldedit-core/src/main/java/com/sk89q/worldedit/extent/transform/BlockTransformExtent.java

@@ -27,6 +27,7 @@ import com.sk89q.jnbt.Tag;
 import com.sk89q.worldedit.WorldEditException;
 import com.sk89q.worldedit.extent.Extent;
 import com.sk89q.worldedit.internal.helper.MCDirections;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.math.Vector3;
 import com.sk89q.worldedit.math.transform.AffineTransform;
@@ -43,6 +44,7 @@ import com.sk89q.worldedit.world.block.BlockStateHolder;
 import com.sk89q.worldedit.world.block.BlockType;
 import com.sk89q.worldedit.world.block.BlockTypes;
 import com.sk89q.worldedit.world.block.BlockTypesCache;
+import org.apache.logging.log4j.Logger;
 import org.jetbrains.annotations.NotNull;
 
 import java.util.ArrayList;
@@ -73,7 +75,6 @@ import static com.sk89q.worldedit.util.Direction.UP;
 import static com.sk89q.worldedit.util.Direction.WEST;
 import static com.sk89q.worldedit.util.Direction.findClosest;
 import static com.sk89q.worldedit.util.Direction.values;
-import static org.slf4j.LoggerFactory.getLogger;
 
 /**
  * Transforms blocks themselves (but not their position) according to a
@@ -81,6 +82,8 @@ import static org.slf4j.LoggerFactory.getLogger;
  */
 public class BlockTransformExtent extends ResettableExtent {
 
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
+
     private static final Set<PropertyKey> directional = PropertyKeySet.of(
             PropertyKey.HALF,
             PropertyKey.ROTATION,
@@ -174,7 +177,7 @@ public class BlockTransformExtent extends ResettableExtent {
                     case 2:
                         return adapt(combine(EAST, WEST), combine(SOUTH, NORTH));
                     default:
-                        getLogger(BlockTransformExtent.class).error("Invalid {} {}", property.getName(), property.getValues());
+                        LOGGER.error("Invalid {} {}", property.getName(), property.getValues());
                         return null;
                 }
             }
@@ -207,7 +210,7 @@ public class BlockTransformExtent extends ResettableExtent {
                                 result.add(notIndex(combine(NORTHEAST, NORTHWEST, SOUTHWEST, SOUTHEAST), property.getIndexFor("inner_left"), property.getIndexFor("inner_right")));
                                 continue;
                             default:
-                                getLogger(BlockTransformExtent.class).warn("Unknown direction {}", value);
+                                LOGGER.warn("Unknown direction {}", value);
                                 result.add(0L);
                         }
                     }
@@ -247,7 +250,7 @@ public class BlockTransformExtent extends ResettableExtent {
                                 directions.add(combine(NORTHEAST));
                                 break;
                             default:
-                                getLogger(BlockTransformExtent.class).warn("Unknown direction {}", value);
+                                LOGGER.warn("Unknown direction {}", value);
                                 directions.add(0L);
                         }
                     }

worldedit-core/src/main/java/com/sk89q/worldedit/function/mask/MaskIntersection.java

@@ -19,7 +19,9 @@
 
 package com.sk89q.worldedit.function.mask;
 
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.math.BlockVector3;
+import org.apache.logging.log4j.Logger;
 
 import java.util.AbstractMap;
 import java.util.ArrayList;
@@ -37,7 +39,6 @@ import java.util.stream.Collectors;
 import javax.annotation.Nullable;
 
 import static com.google.common.base.Preconditions.checkNotNull;
-import static org.slf4j.LoggerFactory.getLogger;
 
 /**
  * Combines several masks and requires that all masks return true
@@ -46,6 +47,8 @@ import static org.slf4j.LoggerFactory.getLogger;
  */
 public class MaskIntersection extends AbstractMask {
 
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
+
     protected final Set<Mask> masks;
     protected Mask[] masksArray;
     protected boolean defaultReturn;
@@ -160,9 +163,9 @@ public class MaskIntersection extends AbstractMask {
         while (combineMasks(pairingFunction(), failedCombines) && --maxIteration > 0);
 
         if (maxIteration == 0) {
-            getLogger(MaskIntersection.class).error("Failed optimize MaskIntersection");
+            LOGGER.error("Failed optimize MaskIntersection");
             for (Mask mask : masks) {
-                getLogger(MaskIntersection.class).error(mask.getClass() + " / " + mask);
+                LOGGER.error(mask.getClass() + " / " + mask);
             }
         }
         // Return result

worldedit-core/src/main/java/com/sk89q/worldedit/internal/SchematicsEventListener.java

@@ -20,9 +20,9 @@
 package com.sk89q.worldedit.internal;
 
 import com.sk89q.worldedit.event.platform.ConfigurationLoadEvent;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.util.eventbus.Subscribe;
-import org.slf4j.Logger;
+import org.apache.logging.log4j.Logger;
-import org.slf4j.LoggerFactory;
 
 import java.io.IOException;
 import java.nio.file.FileAlreadyExistsException;
@@ -31,7 +31,7 @@ import java.nio.file.Path;
 
 public class SchematicsEventListener {
 
-    private static final Logger LOGGER = LoggerFactory.getLogger(SchematicsEventListener.class);
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
 
     @Subscribe
     public void onConfigLoad(ConfigurationLoadEvent event) {

worldedit-core/src/main/java/com/sk89q/worldedit/internal/anvil/ChunkDeleter.java

@@ -27,9 +27,9 @@ import com.google.gson.TypeAdapter;
 import com.google.gson.reflect.TypeToken;
 import com.google.gson.stream.JsonReader;
 import com.google.gson.stream.JsonWriter;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.math.BlockVector2;
-import org.slf4j.Logger;
+import org.apache.logging.log4j.Logger;
-import org.slf4j.LoggerFactory;
 
 import java.io.BufferedWriter;
 import java.io.IOException;
@@ -52,7 +52,7 @@ import java.util.stream.Stream;
 public final class ChunkDeleter {
 
     public static final String DELCHUNKS_FILE_NAME = "delete_chunks.json";
-    private static final Logger logger = LoggerFactory.getLogger(ChunkDeleter.class);
+    private static final Logger LOGGER = LogManagerCompat.getLogger();;
 
     private static final Comparator<BlockVector2> chunkSorter = Comparator.comparing(
         pos -> (pos.getBlockX() & 31) + (pos.getBlockZ() & 31) * 32
@@ -80,13 +80,13 @@ public final class ChunkDeleter {
         try {
             chunkDeleter = createFromFile(chunkFile);
         } catch (JsonSyntaxException | IOException e) {
-            logger.error("Could not parse chunk deletion file. Invalid file?", e);
+            LOGGER.error("Could not parse chunk deletion file. Invalid file?", e);
             return;
         }
-        logger.info("Found chunk deletions. Proceeding with deletion...");
+        LOGGER.info("Found chunk deletions. Proceeding with deletion...");
         long start = System.currentTimeMillis();
         if (chunkDeleter.runDeleter()) {
-            logger.info("Successfully deleted {} matching chunks (out of {}, taking {} ms).",
+            LOGGER.info("Successfully deleted {} matching chunks (out of {}, taking {} ms).",
                     chunkDeleter.getDeletedChunkCount(), chunkDeleter.getDeletionsRequested(),
                     System.currentTimeMillis() - start);
             if (deleteOnSuccess) {
@@ -96,12 +96,12 @@ public final class ChunkDeleter {
                 } catch (IOException ignored) {
                 }
                 if (!deletedFile) {
-                    logger.warn("Chunk deletion file could not be cleaned up. This may have unintended consequences"
+                    LOGGER.warn("Chunk deletion file could not be cleaned up. This may have unintended consequences"
                         + " on next startup, or if /delchunks is used again.");
                 }
             }
         } else {
-            logger.error("Error occurred while deleting chunks. "
+            LOGGER.error("Error occurred while deleting chunks. "
                 + "If world errors occur, stop the server and restore the *.bak backup files.");
         }
     }
@@ -131,7 +131,7 @@ public final class ChunkDeleter {
 
     private boolean runBatch(ChunkDeletionInfo.ChunkBatch chunkBatch) {
         int chunkCount = chunkBatch.getChunkCount();
-        logger.debug("Processing deletion batch with {} chunks.", chunkCount);
+        LOGGER.debug("Processing deletion batch with {} chunks.", chunkCount);
         final Map<Path, Stream<BlockVector2>> regionToChunkList = groupChunks(chunkBatch);
         BiPredicate<RegionAccess, BlockVector2> predicate = createPredicates(chunkBatch.deletionPredicates);
         shouldPreload = chunkBatch.chunks == null;
@@ -147,7 +147,7 @@ public final class ChunkDeleter {
                 try {
                     backupRegion(regionPath);
                 } catch (IOException e) {
-                    logger.warn("Error backing up region file: " + regionPath + ". Aborting the process.", e);
+                    LOGGER.warn("Error backing up region file: " + regionPath + ". Aborting the process.", e);
                     return false;
                 }
             }
@@ -263,15 +263,15 @@ public final class ChunkDeleter {
                     region.deleteChunk(chunk);
                     totalChunksDeleted++;
                     if (debugRate != 0 && totalChunksDeleted % debugRate == 0) {
-                        logger.debug("Deleted {} chunks so far.", totalChunksDeleted);
+                        LOGGER.debug("Deleted {} chunks so far.", totalChunksDeleted);
                     }
                 } else {
-                    logger.debug("Chunk did not match predicates: " + chunk);
+                    LOGGER.debug("Chunk did not match predicates: " + chunk);
                 }
             }
             return true;
         } catch (IOException e) {
-            logger.warn("Error deleting chunks from region: " + regionFile + ". Aborting the process.", e);
+            LOGGER.warn("Error deleting chunks from region: " + regionFile + ". Aborting the process.", e);
             return false;
         }
     }

worldedit-core/src/main/java/com/sk89q/worldedit/internal/util/LogManagerCompat.java

@@ -0,0 +1,44 @@
+/*
+ * WorldEdit, a Minecraft world manipulation toolkit
+ * Copyright (C) sk89q <http://www.sk89q.com>
+ * Copyright (C) WorldEdit team and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package com.sk89q.worldedit.internal.util;
+
+import com.google.common.base.Throwables;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+
+import java.util.List;
+
+public class LogManagerCompat {
+
+    public static Logger getLogger() {
+        return LogManager.getLogger(getCallerCallerClassName());
+    }
+
+    private static String getCallerCallerClassName() {
+        List<StackTraceElement> lazyStack = Throwables.lazyStackTrace(new Throwable());
+        // 0 - this method
+        // 1 - caller
+        // 2 - caller caller
+        return lazyStack.get(2).getClassName();
+    }
+
+    private LogManagerCompat() {
+    }
+}

worldedit-core/src/main/java/com/sk89q/worldedit/math/interpolation/ReparametrisingInterpolation.java

@@ -21,9 +21,9 @@
 
 package com.sk89q.worldedit.math.interpolation;
 
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.math.Vector3;
-import org.slf4j.Logger;
+import org.apache.logging.log4j.Logger;
-import org.slf4j.LoggerFactory;
 
 import java.util.List;
 import java.util.Map.Entry;
@@ -39,7 +39,7 @@ import static com.google.common.base.Preconditions.checkNotNull;
  */
 public class ReparametrisingInterpolation implements Interpolation {
 
-    private static final Logger log = LoggerFactory.getLogger(ReparametrisingInterpolation.class);
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
 
     private final Interpolation baseInterpolation;
     private double totalArcLength;
@@ -108,7 +108,7 @@ public class ReparametrisingInterpolation implements Interpolation {
 
         Entry<Double, Double> ceilingEntry = cache.ceilingEntry(arc);
         if (ceilingEntry == null) {
-            log.warn("Error in arcToParameter: no ceiling entry for " + arc + " found!");
+            LOGGER.warn("Error in arcToParameter: no ceiling entry for " + arc + " found!");
             return 0;
         }
         final double rightArc = ceilingEntry.getKey();

worldedit-core/src/main/java/com/sk89q/worldedit/scripting/MinecraftHidingClassShutter.java

@@ -20,16 +20,12 @@
 package com.sk89q.worldedit.scripting;
 
 import org.mozilla.javascript.ClassShutter;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
 /**
  * Hides Minecraft's obfuscated & de-obfuscated names from scripts.
  */
 class MinecraftHidingClassShutter implements ClassShutter {
 
-    private static final Logger LOGGER = LoggerFactory.getLogger(MinecraftHidingClassShutter.class);
-
     @Override
     public boolean visibleToScripts(String fullClassName) {
         if (!fullClassName.contains(".")) {

worldedit-core/src/main/java/com/sk89q/worldedit/session/SessionManager.java

@@ -31,6 +31,7 @@ import com.sk89q.worldedit.command.tool.Tool;
 import com.sk89q.worldedit.entity.Player;
 import com.sk89q.worldedit.event.platform.ConfigurationLoadEvent;
 import com.sk89q.worldedit.extension.platform.Locatable;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.session.request.Request;
 import com.sk89q.worldedit.session.storage.JsonFileSessionStore;
 import com.sk89q.worldedit.session.storage.SessionStore;
@@ -40,8 +41,7 @@ import com.sk89q.worldedit.util.eventbus.Subscribe;
 import com.sk89q.worldedit.world.gamemode.GameModes;
 import com.sk89q.worldedit.world.item.ItemType;
 import com.sk89q.worldedit.world.item.ItemTypes;
-import org.slf4j.Logger;
+import org.apache.logging.log4j.Logger;
-import org.slf4j.LoggerFactory;
 
 import java.io.File;
 import java.io.IOException;
@@ -69,7 +69,7 @@ public class SessionManager {
     private static final int FLUSH_PERIOD = 1000 * 30;
     private static final ListeningExecutorService executorService = MoreExecutors.listeningDecorator(
             EvenMoreExecutors.newBoundedCachedThreadPool(0, 1, 5, "WorldEdit Session Saver - %s"));
-    private static final Logger log = LoggerFactory.getLogger(SessionManager.class);
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
     private static boolean warnedInvalidTool;
 
     private final Timer timer = new Timer("WorldEdit Session Manager");
@@ -157,7 +157,7 @@ public class SessionManager {
                 session = store.load(getKey(sessionKey));
                 session.postLoad();
             } catch (IOException e) {
-                log.warn("Failed to load saved session", e);
+                LOGGER.warn("Failed to load saved session", e);
                 session = new LocalSession();
             }
             Request.request().setSession(session);
@@ -252,7 +252,7 @@ public class SessionManager {
                     try {
                         store.save(getKey(key), entry.getValue());
                     } catch (IOException e) {
-                        log.warn("Failed to write session for UUID " + getKey(key), e);
+                        LOGGER.warn("Failed to write session for UUID " + getKey(key), e);
                         exception = e;
                     }
                 }

worldedit-core/src/main/java/com/sk89q/worldedit/session/storage/JsonFileSessionStore.java

@@ -24,10 +24,10 @@ import com.google.gson.GsonBuilder;
 import com.google.gson.JsonIOException;
 import com.google.gson.JsonParseException;
 import com.sk89q.worldedit.LocalSession;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.util.gson.GsonUtil;
 import com.sk89q.worldedit.util.io.Closer;
-import org.slf4j.Logger;
+import org.apache.logging.log4j.Logger;
-import org.slf4j.LoggerFactory;
 
 import java.io.BufferedReader;
 import java.io.BufferedWriter;
@@ -47,7 +47,7 @@ import static com.google.common.base.Preconditions.checkNotNull;
  */
 public class JsonFileSessionStore implements SessionStore {
 
-    private static final Logger log = LoggerFactory.getLogger(JsonFileSessionStore.class);
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
     private final Gson gson;
     private final File dir;
 
@@ -61,7 +61,7 @@ public class JsonFileSessionStore implements SessionStore {
 
         if (!dir.isDirectory()) {
             if (!dir.mkdirs()) {
-                log.warn("Failed to create directory '" + dir.getPath() + "' for sessions");
+                LOGGER.warn("Failed to create directory '" + dir.getPath() + "' for sessions");
             }
         }
 
@@ -90,9 +90,9 @@ public class JsonFileSessionStore implements SessionStore {
             BufferedReader br = closer.register(new BufferedReader(fr));
             LocalSession session = gson.fromJson(br, LocalSession.class);
             if (session == null) {
-                log.warn("Loaded a null session from {}, creating new session", file);
+                LOGGER.warn("Loaded a null session from {}, creating new session", file);
                 if (!file.delete()) {
-                    log.warn("Failed to delete corrupted session {}", file);
+                    LOGGER.warn("Failed to delete corrupted session {}", file);
                 }
                 session = new LocalSession();
             }
@@ -120,7 +120,7 @@ public class JsonFileSessionStore implements SessionStore {
 
         if (finalFile.exists()) {
             if (!finalFile.delete()) {
-                log.warn("Failed to delete " + finalFile.getPath() + " so the .tmp file can replace it");
+                LOGGER.warn("Failed to delete " + finalFile.getPath() + " so the .tmp file can replace it");
             }
         }
 
@@ -129,7 +129,7 @@ public class JsonFileSessionStore implements SessionStore {
         }
 
         if (!tempFile.renameTo(finalFile)) {
-            log.warn("Failed to rename temporary session file to " + finalFile.getPath());
+            LOGGER.warn("Failed to rename temporary session file to " + finalFile.getPath());
         }
     }
 

worldedit-core/src/main/java/com/sk89q/worldedit/util/PropertiesConfiguration.java

@@ -24,10 +24,10 @@ package com.sk89q.worldedit.util;
 import com.sk89q.util.StringUtil;
 import com.sk89q.worldedit.LocalConfiguration;
 import com.sk89q.worldedit.LocalSession;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.util.report.Unreported;
 import com.sk89q.worldedit.world.registry.LegacyMapper;
-import org.slf4j.Logger;
+import org.apache.logging.log4j.Logger;
-import org.slf4j.LoggerFactory;
 
 import java.io.File;
 import java.io.FileInputStream;
@@ -49,7 +49,7 @@ import java.util.Set;
  */
 public class PropertiesConfiguration extends LocalConfiguration {
 
-    @Unreported private static final Logger log = LoggerFactory.getLogger(PropertiesConfiguration.class);
+    @Unreported private static final Logger LOGGER = LogManagerCompat.getLogger();
 
     @Unreported protected Properties properties;
     @Unreported protected File path;
@@ -82,7 +82,7 @@ public class PropertiesConfiguration extends LocalConfiguration {
             properties.load(stream);
         } catch (FileNotFoundException ignored) {
         } catch (IOException e) {
-            log.warn("Failed to read configuration", e);
+            LOGGER.warn("Failed to read configuration", e);
         }
 
         loadExtra();
@@ -147,7 +147,7 @@ public class PropertiesConfiguration extends LocalConfiguration {
         try (OutputStream output = new FileOutputStream(path)) {
             properties.store(output, "Don't put comments; they get removed");
         } catch (IOException e) {
-            log.warn("Failed to write configuration", e);
+            LOGGER.warn("Failed to write configuration", e);
         }
     }
 

worldedit-core/src/main/java/com/sk89q/worldedit/util/YAMLConfiguration.java

@@ -25,7 +25,7 @@ import com.sk89q.worldedit.LocalConfiguration;
 import com.sk89q.worldedit.LocalSession;
 import com.sk89q.worldedit.session.SessionManager;
 import com.sk89q.worldedit.util.report.Unreported;
-import org.slf4j.Logger;
+import org.apache.logging.log4j.Logger;
 
 import java.io.IOException;
 import java.util.HashSet;

worldedit-core/src/main/java/com/sk89q/worldedit/util/eventbus/EventBus.java

@@ -22,8 +22,8 @@ package com.sk89q.worldedit.util.eventbus;
 import com.google.common.collect.HashMultimap;
 import com.google.common.collect.Multimap;
 import com.google.common.collect.SetMultimap;
-import org.slf4j.Logger;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
-import org.slf4j.LoggerFactory;
+import org.apache.logging.log4j.Logger;
 
 import java.lang.reflect.InvocationTargetException;
 import java.util.ArrayList;
@@ -47,7 +47,7 @@ import static com.google.common.base.Preconditions.checkNotNull;
  */
 public final class EventBus {
 
-    private final Logger logger = LoggerFactory.getLogger(EventBus.class);
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
 
     private final ReadWriteLock lock = new ReentrantReadWriteLock();
 
@@ -192,7 +192,7 @@ public final class EventBus {
         try {
             handler.handleEvent(event);
         } catch (InvocationTargetException e) {
-            logger.error("Could not dispatch event: " + event + " to handler " + handler, e);
+            LOGGER.error("Could not dispatch event: " + event + " to handler " + handler, e);
         }
     }
 

worldedit-core/src/main/java/com/sk89q/worldedit/util/io/Closer.java

@@ -21,8 +21,8 @@ package com.sk89q.worldedit.util.io;
 
 import com.google.common.annotations.VisibleForTesting;
 import com.google.common.base.Throwables;
-import org.slf4j.Logger;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
-import org.slf4j.LoggerFactory;
+import org.apache.logging.log4j.Logger;
 
 import java.io.Closeable;
 import java.io.IOException;
@@ -35,7 +35,7 @@ import static com.google.common.base.Preconditions.checkNotNull;
 
 public final class Closer implements Closeable {
 
-    private static final Logger logger = LoggerFactory.getLogger(Closer.class);
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
 
     /**
      * The suppressor implementation to use for the current Java version.
@@ -239,7 +239,7 @@ public final class Closer implements Closeable {
         @Override
         public void suppress(Object closeable, Throwable thrown, Throwable suppressed) {
             // log to the same place as Closeables
-            logger.warn("Suppressing exception thrown when closing " + closeable, suppressed);
+            LOGGER.warn("Suppressing exception thrown when closing " + closeable, suppressed);
         }
     }
 

worldedit-core/src/main/java/com/sk89q/worldedit/util/io/file/ArchiveNioSupports.java

@@ -35,11 +35,6 @@ public class ArchiveNioSupports {
 
     static {
         ImmutableList.Builder<ArchiveNioSupport> builder = ImmutableList.builder();
-        try {
-            builder.add(TrueVfsArchiveNioSupport.getInstance());
-        } catch (NoClassDefFoundError ignored) {
-            // No TrueVFS available. That's OK.
-        }
         SUPPORTS = builder.add(ZipArchiveNioSupport.getInstance())
             .addAll(ServiceLoader.load(ArchiveNioSupport.class))
             .build();

worldedit-core/src/main/java/com/sk89q/worldedit/util/io/file/TrueVfsArchiveNioSupport.java

@@ -1,73 +0,0 @@
-/*
- * WorldEdit, a Minecraft world manipulation toolkit
- * Copyright (C) sk89q <http://www.sk89q.com>
- * Copyright (C) WorldEdit team and contributors
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-package com.sk89q.worldedit.util.io.file;
-
-import com.google.common.base.Splitter;
-import com.google.common.collect.ImmutableSet;
-import net.java.truevfs.access.TArchiveDetector;
-import net.java.truevfs.access.TFileSystem;
-import net.java.truevfs.access.TPath;
-
-import java.io.IOException;
-import java.nio.file.Path;
-import java.util.Optional;
-import java.util.Set;
-
-public final class TrueVfsArchiveNioSupport implements ArchiveNioSupport {
-
-    private static final TrueVfsArchiveNioSupport INSTANCE = new TrueVfsArchiveNioSupport();
-
-    public static TrueVfsArchiveNioSupport getInstance() {
-        return INSTANCE;
-    }
-
-    private static final Set<String> ALLOWED_EXTENSIONS = ImmutableSet.copyOf(
-        Splitter.on('|').split(TArchiveDetector.ALL.getExtensions())
-    );
-
-    private TrueVfsArchiveNioSupport() {
-    }
-
-    @Override
-    public Optional<ArchiveDir> tryOpenAsDir(Path archive) throws IOException {
-        String fileName = archive.getFileName().toString();
-        int dot = fileName.indexOf('.');
-        if (dot < 0 || dot >= fileName.length() || !ALLOWED_EXTENSIONS
-            .contains(fileName.substring(dot + 1))) {
-            return Optional.empty();
-        }
-        TFileSystem fileSystem = new TPath(archive).getFileSystem();
-        TPath root = fileSystem.getPath("/");
-        Path realRoot = ArchiveNioSupports.skipRootSameName(
-            root, fileName.substring(0, dot)
-        );
-        return Optional.of(new ArchiveDir() {
-            @Override
-            public Path getPath() {
-                return realRoot;
-            }
-
-            @Override
-            public void close() throws IOException {
-                fileSystem.close();
-            }
-        });
-    }
-}

worldedit-core/src/main/java/com/sk89q/worldedit/util/report/ShallowObjectReport.java

@@ -19,8 +19,8 @@
 
 package com.sk89q.worldedit.util.report;
 
-import org.slf4j.Logger;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
-import org.slf4j.LoggerFactory;
+import org.apache.logging.log4j.Logger;
 
 import java.lang.reflect.Field;
 import java.lang.reflect.Modifier;
@@ -29,7 +29,7 @@ import static com.google.common.base.Preconditions.checkNotNull;
 
 public class ShallowObjectReport extends DataReport {
 
-    private static final Logger log = LoggerFactory.getLogger(ShallowObjectReport.class);
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
 
     public ShallowObjectReport(String title, Object object) {
         super(title);
@@ -53,7 +53,7 @@ public class ShallowObjectReport extends DataReport {
                 Object value = field.get(object);
                 append(field.getName(), String.valueOf(value));
             } catch (IllegalAccessException e) {
-                log.warn("Failed to get value of '" + field.getName() + "' on " + type);
+                LOGGER.warn("Failed to get value of '" + field.getName() + "' on " + type);
             }
         }
     }

worldedit-core/src/main/java/com/sk89q/worldedit/world/block/BlockTypesCache.java

@@ -25,8 +25,6 @@ import java.util.Map;
 import java.util.Set;
 import java.util.stream.Collectors;
 
-import static org.slf4j.LoggerFactory.getLogger;
-
 public class BlockTypesCache {
     /*
      -----------------------------------------------------