Waterfall/BungeeCord-Patches/0040-Use-Log4j2-for-logging-and-TerminalConsoleAppender-f.patch

From 2ec3795f6c430ff2c933b566b224d17b5657bb2b Mon Sep 17 00:00:00 2001
From: Minecrell <dev@minecrell.net>
Date: Fri, 22 Sep 2017 12:46:47 +0200
Subject: [PATCH] Use Log4j2 for logging and TerminalConsoleAppender for
 console


diff --git a/bootstrap/pom.xml b/bootstrap/pom.xml
index 7bc2dff7..6e8dd81e 100644
--- a/bootstrap/pom.xml
+++ b/bootstrap/pom.xml
@@ -80,7 +80,17 @@
                             </excludes>
                         </filter>
                     </filters>
+                    <transformers>
+                        <transformer implementation="com.github.edwgiz.mavenShadePlugin.log4j2CacheTransformer.PluginsCacheFileTransformer" />
+                    </transformers>
                 </configuration>
+                <dependencies>
+                    <dependency>
+                        <groupId>com.github.edwgiz</groupId>
+                        <artifactId>maven-shade-plugin.log4j2-cachefile-transformer</artifactId>
+                        <version>2.8.1</version>
+                    </dependency>
+                </dependencies>
             </plugin>
         </plugins>
     </build>
diff --git a/bootstrap/src/main/java/net/md_5/bungee/BungeeCordLauncher.java b/bootstrap/src/main/java/net/md_5/bungee/BungeeCordLauncher.java
index 2efe7211..3e719f6e 100644
--- a/bootstrap/src/main/java/net/md_5/bungee/BungeeCordLauncher.java
+++ b/bootstrap/src/main/java/net/md_5/bungee/BungeeCordLauncher.java
@@ -57,6 +57,9 @@ public class BungeeCordLauncher
 
         if ( !options.has( "noconsole" ) )
         {
+            // Waterfall start - Use TerminalConsoleAppender
+            io.github.waterfallmc.waterfall.console.WaterfallConsole.readCommands();
+            /*
             String line;
             while ( bungee.isRunning && ( line = bungee.getConsoleReader().readLine( ">" ) ) != null )
             {
@@ -65,6 +68,8 @@ public class BungeeCordLauncher
                     bungee.getConsole().sendMessage( new ComponentBuilder( "Command not found" ).color( ChatColor.RED ).create() );
                 }
             }
+            */
+            // Waterfall end
         }
     }
 }
diff --git a/log4j/pom.xml b/log4j/pom.xml
new file mode 100644
index 00000000..78045e1d
--- /dev/null
+++ b/log4j/pom.xml
@@ -0,0 +1,64 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <parent>
+        <groupId>io.github.waterfallmc</groupId>
+        <artifactId>waterfall-parent</artifactId>
+        <version>1.12-SNAPSHOT</version>
+        <relativePath>../pom.xml</relativePath>
+    </parent>
+
+    <groupId>io.github.waterfallmc</groupId>
+    <artifactId>waterfall-log4j</artifactId>
+    <version>1.12-SNAPSHOT</version>
+    <packaging>jar</packaging>
+
+    <name>Waterfall-Log</name>
+    <description>Simplistic and performant Log4j2 based logger and console API designed for use with Waterfall and Minecraft related applications.</description>
+
+    <dependencies>
+        <!-- Log4j -->
+        <dependency>
+            <groupId>org.apache.logging.log4j</groupId>
+            <artifactId>log4j-core</artifactId>
+            <version>2.9.1</version>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.logging.log4j</groupId>
+            <artifactId>log4j-iostreams</artifactId>
+            <version>2.9.1</version>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.logging.log4j</groupId>
+            <artifactId>log4j-jul</artifactId>
+            <version>2.9.1</version>
+        </dependency>
+        <dependency>
+            <groupId>com.lmax</groupId>
+            <artifactId>disruptor</artifactId>
+            <version>3.3.6</version>
+            <scope>runtime</scope>
+        </dependency>
+
+        <!-- Console improvements -->
+        <dependency>
+            <groupId>net.minecrell</groupId>
+            <artifactId>terminalconsoleappender</artifactId>
+            <version>1.0.0</version>
+        </dependency>
+        <dependency>
+            <groupId>net.java.dev.jna</groupId>
+            <artifactId>jna</artifactId>
+            <version>4.4.0</version>
+            <scope>runtime</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>io.github.waterfallmc</groupId>
+            <artifactId>waterfall-chat</artifactId>
+            <version>${project.version}</version>
+            <scope>compile</scope>
+        </dependency>
+    </dependencies>
+</project>
diff --git a/log4j/src/main/java/io/github/waterfallmc/waterfall/log4j/Log4JLogHandler.java b/log4j/src/main/java/io/github/waterfallmc/waterfall/log4j/Log4JLogHandler.java
new file mode 100644
index 00000000..d5a1955b
--- /dev/null
+++ b/log4j/src/main/java/io/github/waterfallmc/waterfall/log4j/Log4JLogHandler.java
@@ -0,0 +1,55 @@
+package io.github.waterfallmc.waterfall.log4j;
+
+import com.google.common.base.Strings;
+import org.apache.logging.log4j.Level;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+import org.apache.logging.log4j.jul.LevelTranslator;
+import org.apache.logging.log4j.message.MessageFormatMessage;
+
+import java.util.Map;
+import java.util.MissingResourceException;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.logging.Handler;
+import java.util.logging.LogRecord;
+
+/**
+ * A {@link Handler} that forwards all log messages to the Log4J logger.
+ *
+ * <p>We don't use Log4J's custom JUL LogManager currently, because it breaks
+ * adding custom handlers to JUL loggers. Some plugins may depend on that
+ * functionality...</p>
+ */
+class Log4JLogHandler extends Handler {
+
+    private final Map<String, Logger> cache = new ConcurrentHashMap<>();
+
+    @Override
+    public void publish(LogRecord record) {
+        Logger logger = cache.computeIfAbsent(Strings.nullToEmpty(record.getLoggerName()), LogManager::getLogger);
+
+        String message = record.getMessage();
+        if (record.getResourceBundle() != null) {
+            try {
+                message = record.getResourceBundle().getString(message);
+            } catch (MissingResourceException ignored) {
+            }
+        }
+
+        final Level level = LevelTranslator.toLevel(record.getLevel());
+        if (record.getParameters() != null && record.getParameters().length > 0) {
+            logger.log(level, new MessageFormatMessage(message, record.getParameters()), record.getThrown());
+        } else {
+            logger.log(level, message, record.getThrown());
+        }
+    }
+
+    @Override
+    public void flush() {
+    }
+
+    @Override
+    public void close() {
+    }
+
+}
diff --git a/log4j/src/main/java/io/github/waterfallmc/waterfall/log4j/WaterfallLogger.java b/log4j/src/main/java/io/github/waterfallmc/waterfall/log4j/WaterfallLogger.java
new file mode 100644
index 00000000..a0f7ed01
--- /dev/null
+++ b/log4j/src/main/java/io/github/waterfallmc/waterfall/log4j/WaterfallLogger.java
@@ -0,0 +1,33 @@
+package io.github.waterfallmc.waterfall.log4j;
+
+import org.apache.logging.log4j.Level;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.io.IoBuilder;
+import java.util.logging.Handler;
+import java.util.logging.Logger;
+
+public final class WaterfallLogger {
+
+    private WaterfallLogger() {
+    }
+
+    public static Logger create() {
+        org.apache.logging.log4j.Logger redirect = LogManager.getRootLogger();
+        System.setOut(IoBuilder.forLogger(redirect).setLevel(Level.INFO).buildPrintStream());
+        System.setErr(IoBuilder.forLogger(redirect).setLevel(Level.ERROR).buildPrintStream());
+
+        Logger root = Logger.getLogger("");
+        root.setUseParentHandlers(false);
+
+        // Remove existing handlers
+        for (Handler handler : root.getHandlers()) {
+            root.removeHandler(handler);
+        }
+
+        // Setup forward log handler
+        root.addHandler(new Log4JLogHandler());
+
+        return Logger.getLogger("BungeeCord");
+    }
+
+}
diff --git a/log4j/src/main/resources/log4j2.xml b/log4j/src/main/resources/log4j2.xml
new file mode 100644
index 00000000..d4a81199
--- /dev/null
+++ b/log4j/src/main/resources/log4j2.xml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Configuration status="warn">
+    <Appenders>
+        <TerminalConsole name="TerminalConsole">
+            <PatternLayout pattern="%highlightError{[%d{HH:mm:ss} %level]: %minecraftFormatting{%msg}%n%xEx}" />
+        </TerminalConsole>
+        <RollingRandomAccessFile name="File" fileName="logs/latest.log" filePattern="logs/%d{yyyy-MM-dd}-%i.log.gz" immediateFlush="false">
+            <PatternLayout pattern="[%d{HH:mm:ss}] [%t/%level]: %minecraftFormatting{%msg}{strip}%n" />
+            <Policies>
+                <TimeBasedTriggeringPolicy />
+                <OnStartupTriggeringPolicy />
+            </Policies>
+        </RollingRandomAccessFile>
+    </Appenders>
+
+    <Loggers>
+        <AsyncRoot level="info">
+            <AppenderRef ref="TerminalConsole" />
+            <AppenderRef ref="File" />
+        </AsyncRoot>
+    </Loggers>
+</Configuration>
diff --git a/pom.xml b/pom.xml
index 6b4c1606..b82ef30a 100644
--- a/pom.xml
+++ b/pom.xml
@@ -56,6 +56,7 @@
         <module>config</module>
         <module>event</module>
         <module>log</module>
+        <module>log4j</module>
         <module>module</module>
         <module>protocol</module>
         <module>proxy</module>
diff --git a/proxy/pom.xml b/proxy/pom.xml
index dd8eab30..61886884 100644
--- a/proxy/pom.xml
+++ b/proxy/pom.xml
@@ -70,7 +70,7 @@
         </dependency>
         <dependency>
             <groupId>io.github.waterfallmc</groupId>
-            <artifactId>waterfall-log</artifactId>
+            <artifactId>waterfall-log4j</artifactId>
             <version>${project.version}</version>
             <scope>compile</scope>
         </dependency>
diff --git a/proxy/src/main/java/Test.java b/proxy/src/main/java/Test.java
index 446dfe2f..c3cb5aaa 100644
--- a/proxy/src/main/java/Test.java
+++ b/proxy/src/main/java/Test.java
@@ -22,6 +22,9 @@ public class Test
         bungee.getLogger().info( "Enabled Waterfall version " + bungee.getVersion() );
         bungee.start();
 
+        // Waterfall start - Use TerminalConsoleAppender
+        io.github.waterfallmc.waterfall.console.WaterfallConsole.readCommands();
+        /*
         while ( bungee.isRunning )
         {
             String line = bungee.getConsoleReader().readLine( ">" );
@@ -33,5 +36,7 @@ public class Test
                 }
             }
         }
+        */
+        // Waterfall end
     }
 }
diff --git a/proxy/src/main/java/io/github/waterfallmc/waterfall/console/WaterfallConsole.java b/proxy/src/main/java/io/github/waterfallmc/waterfall/console/WaterfallConsole.java
new file mode 100644
index 00000000..a8a94749
--- /dev/null
+++ b/proxy/src/main/java/io/github/waterfallmc/waterfall/console/WaterfallConsole.java
@@ -0,0 +1,93 @@
+package io.github.waterfallmc.waterfall.console;
+
+import com.google.common.util.concurrent.ThreadFactoryBuilder;
+import net.md_5.bungee.BungeeCord;
+import net.md_5.bungee.api.ChatColor;
+import net.md_5.bungee.api.ProxyServer;
+import net.minecrell.terminalconsole.TerminalConsoleAppender;
+import org.jline.reader.EndOfFileException;
+import org.jline.reader.LineReader;
+import org.jline.reader.LineReaderBuilder;
+import org.jline.reader.UserInterruptException;
+import org.jline.terminal.Terminal;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.util.concurrent.Executor;
+import java.util.concurrent.Executors;
+
+public final class WaterfallConsole {
+
+    private static final Executor executor = Executors.newSingleThreadExecutor(
+            new ThreadFactoryBuilder().setNameFormat( "Console Command Thread #%d" ).build());
+
+    public static void readCommands() throws IOException {
+        Terminal terminal = TerminalConsoleAppender.getTerminal();
+        if (terminal != null) {
+            readCommands(terminal);
+        } else {
+            readCommands(System.in);
+        }
+    }
+
+    private static void runCommand(String input) {
+        final String command = input.trim();
+        if (command.isEmpty()) {
+            return;
+        }
+
+        executor.execute(() -> {
+            ProxyServer proxy = ProxyServer.getInstance();
+            if (!proxy.getPluginManager().dispatchCommand(proxy.getConsole(), command)) {
+                proxy.getConsole().sendMessage(ChatColor.RED + "Command not found");
+            }
+        });
+    }
+
+    private static void readCommands(Terminal terminal) throws IOException {
+        final BungeeCord bungee = BungeeCord.getInstance();
+        final LineReader reader = LineReaderBuilder.builder()
+                .appName(ProxyServer.getInstance().getName())
+                .terminal(terminal)
+                .build();
+
+        reader.unsetOpt(LineReader.Option.INSERT_TAB);
+
+        TerminalConsoleAppender.setReader(reader);
+
+        try {
+            String line;
+            while (bungee.isRunning) {
+                try {
+                    line = reader.readLine("> ");
+                } catch (EndOfFileException ignored) {
+                    // Continue reading after EOT
+                    continue;
+                }
+
+                if (line == null) {
+                    break;
+                }
+
+                runCommand(line);
+            }
+        } catch (UserInterruptException e) {
+            ProxyServer.getInstance().stop();
+        } finally {
+            TerminalConsoleAppender.setReader(null);
+        }
+    }
+
+    private static void readCommands(InputStream in) throws IOException {
+        final BungeeCord bungee = BungeeCord.getInstance();
+        try (BufferedReader reader = new BufferedReader(new InputStreamReader(in))) {
+            String line;
+            while (bungee.isRunning && (line = reader.readLine()) != null) {
+                runCommand(line);
+            }
+        }
+    }
+
+}
diff --git a/proxy/src/main/java/net/md_5/bungee/BungeeCord.java b/proxy/src/main/java/net/md_5/bungee/BungeeCord.java
index c84389cd..c71b7c4d 100644
--- a/proxy/src/main/java/net/md_5/bungee/BungeeCord.java
+++ b/proxy/src/main/java/net/md_5/bungee/BungeeCord.java
@@ -45,7 +45,6 @@ import java.util.concurrent.locks.ReentrantReadWriteLock;
 import java.util.logging.Handler;
 import java.util.logging.Level;
 import java.util.logging.Logger;
-import jline.console.ConsoleReader;
 import lombok.Getter;
 import lombok.Setter;
 import lombok.Synchronized;
@@ -78,8 +77,6 @@ import net.md_5.bungee.compress.CompressFactory;
 import net.md_5.bungee.conf.Configuration;
 import net.md_5.bungee.conf.YamlConfig;
 import net.md_5.bungee.forge.ForgeConstants;
-import net.md_5.bungee.log.BungeeLogger;
-import net.md_5.bungee.log.LoggingOutputStream;
 import net.md_5.bungee.module.ModuleManager;
 import net.md_5.bungee.netty.PipelineUtils;
 import net.md_5.bungee.protocol.DefinedPacket;
@@ -89,7 +86,6 @@ import net.md_5.bungee.protocol.packet.PluginMessage;
 import net.md_5.bungee.query.RemoteQuery;
 import net.md_5.bungee.scheduler.BungeeScheduler;
 import net.md_5.bungee.util.CaseInsensitiveMap;
-import org.fusesource.jansi.AnsiConsole;
 
 /**
  * Main BungeeCord proxy class.
@@ -145,8 +141,12 @@ public class BungeeCord extends ProxyServer
     private final File pluginsFolder = new File( "plugins" );
     @Getter
     private final BungeeScheduler scheduler = new BungeeScheduler();
+    // Waterfall start - Remove ConsoleReader for JLine 3 update
+    /*
     @Getter
     private final ConsoleReader consoleReader;
+    */
+    // Waterfall end
     @Getter
     private final Logger logger;
     public final Gson gson = new GsonBuilder()
@@ -191,6 +191,8 @@ public class BungeeCord extends ProxyServer
         }
         reloadMessages();
 
+        // Waterfall start - Use TerminalConsoleAppender and Log4J
+        /*
         // This is a workaround for quite possibly the weirdest bug I have ever encountered in my life!
         // When jansi attempts to extract its natives, by default it tries to extract a specific version,
         // using the loading class's implementation version. Normally this works completely fine,
@@ -209,6 +211,9 @@ public class BungeeCord extends ProxyServer
         logger = new BungeeLogger( "BungeeCord", "proxy.log", consoleReader );
         System.setErr( new PrintStream( new LoggingOutputStream( logger, Level.SEVERE ), true ) );
         System.setOut( new PrintStream( new LoggingOutputStream( logger, Level.INFO ), true ) );
+        */
+        logger = io.github.waterfallmc.waterfall.log4j.WaterfallLogger.create();
+        // Waterfall end
 
         if ( !Boolean.getBoolean( "net.md_5.bungee.native.disable" ) )
         {
diff --git a/proxy/src/main/java/net/md_5/bungee/module/ModuleManager.java b/proxy/src/main/java/net/md_5/bungee/module/ModuleManager.java
index 10366c88..8c5cc949 100644
--- a/proxy/src/main/java/net/md_5/bungee/module/ModuleManager.java
+++ b/proxy/src/main/java/net/md_5/bungee/module/ModuleManager.java
@@ -42,7 +42,7 @@ public class ModuleManager
         ModuleVersion bungeeVersion = ModuleVersion.parse( proxy.getVersion() );
         if ( bungeeVersion == null )
         {
-            System.out.println( "Couldn't detect bungee version. Custom build?" );
+            proxy.getLogger().warning( "Couldn't detect bungee version. Custom build?" ); // Waterfall - Use logger
             return;
         }
 
-- 
2.14.3