Lay down foundation for cross-architecture natives

We have dropped the rarely used kqueue and replaced it with the new Netty aarch64
native. In addition, lay down the foundation for other aarch64 natives.

native/compile-linux.sh

@@ -13,8 +13,10 @@ cd ..
 # Modify as you need.
 MBEDTLS_ROOT=mbedtls
 CFLAGS="-O3 -I$JAVA_HOME/include/ -I$JAVA_HOME/include/linux/ -fPIC -shared -Wl,-z,noexecstack"
+ARCH=$(uname -m)
+mkdir -p src/main/resources/linux_$ARCH
 gcc $CFLAGS -Ilibdeflate src/main/c/jni_util.c src/main/c/jni_zlib_deflate.c src/main/c/jni_zlib_inflate.c \
-    libdeflate/libdeflate.a -o src/main/resources/linux_x64/velocity-compress.so
+    libdeflate/libdeflate.a -o src/main/resources/linux_$ARCH/velocity-compress.so
 gcc $CFLAGS -I $MBEDTLS_ROOT/include -shared $MBEDTLS_ROOT/library/aes.c $MBEDTLS_ROOT/library/aesni.c \
     $MBEDTLS_ROOT/library/platform.c $MBEDTLS_ROOT/library/platform_util.c src/main/c/jni_util.c src/main/c/jni_cipher.c \
-    -o src/main/resources/linux_x64/velocity-cipher.so
+    -o src/main/resources/linux_$ARCH/velocity-cipher.so

native/src/main/java/com/velocitypowered/natives/util/Natives.java

@@ -63,8 +63,12 @@ public class Natives {
   public static final NativeCodeLoader<VelocityCompressorFactory> compress = new NativeCodeLoader<>(
       ImmutableList.of(
           new NativeCodeLoader.Variant<>(NativeConstraints.LINUX,
-              copyAndLoadNative("/linux_x64/velocity-compress.so"),
+              copyAndLoadNative("/linux_x86_64/velocity-compress.so"),
-              "libdeflate (Linux amd64)",
+              "libdeflate (Linux x86_64)",
+              LibdeflateVelocityCompressor.FACTORY),
+          new NativeCodeLoader.Variant<>(NativeConstraints.LINUX,
+              copyAndLoadNative("/linux_aarch64/velocity-compress.so"),
+              "libdeflate (Linux aarch64)",
               LibdeflateVelocityCompressor.FACTORY),
           new NativeCodeLoader.Variant<>(NativeConstraints.JAVA_11, () -> {
           }, "Java 11", () -> Java11VelocityCompressor.FACTORY),
@@ -76,8 +80,11 @@ public class Natives {
   public static final NativeCodeLoader<VelocityCipherFactory> cipher = new NativeCodeLoader<>(
       ImmutableList.of(
             new NativeCodeLoader.Variant<>(NativeConstraints.LINUX,
-              copyAndLoadNative("/linux_x64/velocity-cipher.so"), "mbed TLS (Linux amd64)",
+              copyAndLoadNative("/linux_x86_64/velocity-cipher.so"),
-              NativeVelocityCipher.FACTORY),
+              "mbed TLS (Linux x86_64)", NativeVelocityCipher.FACTORY),
+          new NativeCodeLoader.Variant<>(NativeConstraints.LINUX,
+              copyAndLoadNative("/linux_aarch64/velocity-cipher.so"),
+              "mbed TLS (Linux aarch64)", NativeVelocityCipher.FACTORY),
           new NativeCodeLoader.Variant<>(NativeCodeLoader.ALWAYS, () -> {
           }, "Java", JavaVelocityCipher.FACTORY)
       )

proxy/build.gradle

@@ -48,8 +48,7 @@ dependencies {
     compile "io.netty:netty-handler:${nettyVersion}"
     compile "io.netty:netty-transport-native-epoll:${nettyVersion}"
     compile "io.netty:netty-transport-native-epoll:${nettyVersion}:linux-x86_64"
-    compile "io.netty:netty-transport-native-kqueue:${nettyVersion}"
+    compile "io.netty:netty-transport-native-epoll:${nettyVersion}:linux-aarch64"
-    compile "io.netty:netty-transport-native-kqueue:${nettyVersion}:osx-x86_64"
     compile "io.netty:netty-resolver-dns:${nettyVersion}"
 
     compile "org.apache.logging.log4j:log4j-api:${log4jVersion}"

proxy/src/main/java/com/velocitypowered/proxy/network/TransportType.java

@@ -7,11 +7,6 @@ import io.netty.channel.epoll.EpollDatagramChannel;
 import io.netty.channel.epoll.EpollEventLoopGroup;
 import io.netty.channel.epoll.EpollServerSocketChannel;
 import io.netty.channel.epoll.EpollSocketChannel;
-import io.netty.channel.kqueue.KQueue;
-import io.netty.channel.kqueue.KQueueDatagramChannel;
-import io.netty.channel.kqueue.KQueueEventLoopGroup;
-import io.netty.channel.kqueue.KQueueServerSocketChannel;
-import io.netty.channel.kqueue.KQueueSocketChannel;
 import io.netty.channel.nio.NioEventLoopGroup;
 import io.netty.channel.socket.DatagramChannel;
 import io.netty.channel.socket.ServerSocketChannel;
@@ -27,11 +22,7 @@ enum TransportType {
       (name, type) -> new NioEventLoopGroup(0, createThreadFactory(name, type))),
   EPOLL("epoll", EpollServerSocketChannel.class, EpollSocketChannel.class,
       EpollDatagramChannel.class,
-      (name, type) -> new EpollEventLoopGroup(0, createThreadFactory(name, type))),
+      (name, type) -> new EpollEventLoopGroup(0, createThreadFactory(name, type)));
-  KQUEUE("Kqueue", KQueueServerSocketChannel.class, KQueueSocketChannel.class,
-      KQueueDatagramChannel.class,
-      (name, type) -> new KQueueEventLoopGroup(0, createThreadFactory(name, type)));
-
 
   final String name;
   final Class<? extends ServerSocketChannel> serverSocketChannelClass;
@@ -71,8 +62,6 @@ enum TransportType {
 
     if (Epoll.isAvailable()) {
       return EPOLL;
-    } else if (KQueue.isAvailable()) {
-      return KQUEUE;
     } else {
       return NIO;
     }