Add Netty native transport support on MacOS.

ChangeLog.txt

@@ -19,6 +19,7 @@ Version 0.18-SNAPSHOT:
    [feature] Handle will delay interval and MQTT5's Will optional properties (#770)
    [fix] Handle empty collector batches in PostOffice (#777)
    [feature] Introduce a new option "PEER_CERTIFICATE_AS_USERNAME". When enabled, the client certificate is provided as the username to the authenticator.
+   [feature] Add Netty native trsansport support on MacOS. Bundle all the native transport module by default (#806)
 
 Version 0.17:
    [feature] Introduced DSL FluentConfig to simplify Server's API instantiation #761.

broker/pom.xml

@@ -81,13 +81,66 @@
             <version>${netty.version}</version>
         </dependency>
 
+
+        <dependency>
+            <groupId>io.netty</groupId>
+            <artifactId>netty-transport-native-epoll</artifactId>
+            <version>${netty.version}</version>
+            <classifier>linux-x86_64</classifier>
+        </dependency>
         <dependency>
             <groupId>io.netty</groupId>
             <artifactId>netty-transport-native-epoll</artifactId>
             <version>${netty.version}</version>
+            <classifier>linux-aarch_64</classifier>
+        </dependency>
+        <dependency>
+            <groupId>io.netty</groupId>
+            <artifactId>netty-transport-native-kqueue</artifactId>
+            <version>${netty.version}</version>
+            <classifier>osx-aarch_64</classifier>
+        </dependency>
+        <dependency>
+            <groupId>io.netty</groupId>
+            <artifactId>netty-transport-native-kqueue</artifactId>
+            <version>${netty.version}</version>
+            <classifier>osx-x86_64</classifier>
+        </dependency>
+
+
+        <dependency>
+            <groupId>io.netty</groupId>
+            <artifactId>netty-tcnative-boringssl-static</artifactId>
+            <version>${netty.tcnative.version}</version>
             <classifier>linux-x86_64</classifier>
+            <scope>runtime</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>io.netty</groupId>
+            <artifactId>netty-tcnative-boringssl-static</artifactId>
+            <version>${netty.tcnative.version}</version>
+            <classifier>linux-aarch_64</classifier>
+            <scope>runtime</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>io.netty</groupId>
+            <artifactId>netty-tcnative-boringssl-static</artifactId>
+            <version>${netty.tcnative.version}</version>
+            <classifier>osx-x86_64</classifier>
+            <scope>runtime</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>io.netty</groupId>
+            <artifactId>netty-tcnative-boringssl-static</artifactId>
+            <version>${netty.tcnative.version}</version>
+            <classifier>osx-aarch_64</classifier>
+            <scope>runtime</scope>
         </dependency>
 
+
         <dependency>
             <groupId>com.h2database</groupId>
             <artifactId>h2-mvstore</artifactId>
@@ -169,13 +222,6 @@
             <scope>test</scope>
         </dependency>
 
-        <dependency>
-            <groupId>io.netty</groupId>
-            <artifactId>netty-tcnative-boringssl-static</artifactId>
-            <version>${netty.tcnative.version}</version>
-            <classifier>linux-x86_64</classifier>
-            <scope>test</scope>
-        </dependency>
 
         <dependency>
             <groupId>com.h2database</groupId>

broker/src/main/java/io/moquette/BrokerConstants.java

@@ -98,7 +98,7 @@ public final class BrokerConstants {
     public static final String NETTY_TCP_NODELAY_PROPERTY_NAME = "netty.tcp_nodelay";
     public static final String NETTY_SO_KEEPALIVE_PROPERTY_NAME = "netty.so_keepalive";
     public static final String NETTY_CHANNEL_TIMEOUT_SECONDS_PROPERTY_NAME = "netty.channel_timeout.seconds";
-    public static final String NETTY_EPOLL_PROPERTY_NAME = "netty.epoll";
+    public static final String NETTY_NATIVE_PROPERTY_NAME = "netty.native";
     @Deprecated
     public static final String NETTY_MAX_BYTES_PROPERTY_NAME = IConfig.NETTY_MAX_BYTES_PROPERTY_NAME;
     @Deprecated

broker/src/main/java/io/moquette/broker/NewNettyAcceptor.java

@@ -22,8 +22,12 @@
 import io.netty.bootstrap.ServerBootstrap;
 import io.netty.buffer.ByteBuf;
 import io.netty.channel.*;
+import io.netty.channel.epoll.Epoll;
 import io.netty.channel.epoll.EpollEventLoopGroup;
 import io.netty.channel.epoll.EpollServerSocketChannel;
+import io.netty.channel.kqueue.KQueue;
+import io.netty.channel.kqueue.KQueueEventLoopGroup;
+import io.netty.channel.kqueue.KQueueServerSocketChannel;
 import io.netty.channel.nio.NioEventLoopGroup;
 import io.netty.channel.socket.ServerSocketChannel;
 import io.netty.channel.socket.SocketChannel;
@@ -120,6 +124,9 @@ public void operationComplete(ChannelFuture future) throws Exception {
 
     private static final Logger LOG = LoggerFactory.getLogger(NewNettyAcceptor.class);
 
+    private static final String EPOLL_TRANSPORT = "io.netty.channel.epoll.Epoll";
+    private static final String KQUEUE_TRANSPORT = "io.netty.channel.kqueue.KQueue";
+
     private EventLoopGroup bossGroup;
     private EventLoopGroup workerGroup;
     private final Map<String, Integer> ports = new HashMap<>();
@@ -148,12 +155,17 @@ public void initialize(NewNettyMQTTHandler mqttHandler, IConfig props, ISslConte
         maxBytesInMessage = props.intProp(BrokerConstants.NETTY_MAX_BYTES_PROPERTY_NAME,
                 BrokerConstants.DEFAULT_NETTY_MAX_BYTES_IN_MESSAGE);
 
-        boolean epoll = props.boolProp(BrokerConstants.NETTY_EPOLL_PROPERTY_NAME, false);
-        if (epoll) {
+        boolean nativeTransport = props.boolProp(BrokerConstants.NETTY_NATIVE_PROPERTY_NAME, false);
+        if (nativeTransport && classAvaliable(EPOLL_TRANSPORT) && Epoll.isAvailable()) {
             LOG.info("Netty is using Epoll");
             bossGroup = new EpollEventLoopGroup();
             workerGroup = new EpollEventLoopGroup();
             channelClass = EpollServerSocketChannel.class;
+        } else if (nativeTransport && classAvaliable(KQUEUE_TRANSPORT) && KQueue.isAvailable()) {
+            LOG.info("Netty is using KQueue");
+            bossGroup = new KQueueEventLoopGroup();
+            workerGroup = new KQueueEventLoopGroup();
+            channelClass = KQueueServerSocketChannel.class;
         } else {
             LOG.info("Netty is using NIO");
             bossGroup = new NioEventLoopGroup();
@@ -191,6 +203,15 @@ public void initialize(NewNettyMQTTHandler mqttHandler, IConfig props, ISslConte
         }
     }
 
+    private boolean classAvaliable(String clazz) {
+        try {
+            Class.forName(clazz, false, getClass().getClassLoader());
+            return true;
+        } catch (Exception e) {
+            return false;
+        }
+    }
+
     private boolean securityPortsConfigured(IConfig props) {
         String sslTcpPortProp = props.getProperty(BrokerConstants.SSL_PORT_PROPERTY_NAME);
         String wssPortProp = props.getProperty(BrokerConstants.WSS_PORT_PROPERTY_NAME);

distribution/src/main/resources/moquette.conf

@@ -135,14 +135,14 @@ password_file config/password_file.conf
 #*********************************************************************
 # Netty Configuration
 #
-# netty.epoll: Linux systems can use epoll instead of nio. To get a performance
-# gain and reduced GC.
+# netty.native: Linux systems can use epoll, while MacOS can use kqueue
+# instead of nio. To get a performance gain and reduced GC.
 # http://netty.io/wiki/native-transports.html for more information
 # netty.mqtt.message_size : by default the max size of message is set at 8092 bytes
 # http://docs.oasis-open.org/mqtt/mqtt/v3.1.1/errata01/os/mqtt-v3.1.1-errata01-os-complete.html#_Toc442180836
 # Fore more information about payload size specs.
 #*********************************************************************
-# netty.epoll true
+# netty.native true
 # netty.mqtt.message_size 8092
 
 #*********************************************************************