Added encode/decode for SubAck message

netty_parser/src/main/java/org/dna/mqtt/moquette/parser/netty/MQTTDecoder.java

@@ -23,6 +23,7 @@ public class MQTTDecoder extends ByteToMessageDecoder {
        m_decoderMap.put(AbstractMessage.PUBLISH, new PublishDecoder());
        m_decoderMap.put(AbstractMessage.PUBACK, new PubAckDecoder());
        m_decoderMap.put(AbstractMessage.SUBSCRIBE, new SubscribeDecoder());
+       m_decoderMap.put(AbstractMessage.SUBACK, new SubAckDecoder());
     }
 
     @Override

netty_parser/src/main/java/org/dna/mqtt/moquette/parser/netty/MQTTEncoder.java

@@ -22,6 +22,7 @@ public class MQTTEncoder extends MessageToByteEncoder<AbstractMessage> {
        m_encoderMap.put(AbstractMessage.PUBLISH, new PublishEncoder());
        m_encoderMap.put(AbstractMessage.PUBACK, new PubAckEncoder());
        m_encoderMap.put(AbstractMessage.SUBSCRIBE, new SubscribeEncoder());
+       m_encoderMap.put(AbstractMessage.SUBACK, new SubAckEncoder());
     }
     
     @Override

netty_parser/src/main/java/org/dna/mqtt/moquette/parser/netty/SubAckDecoder.java

@@ -0,0 +1,43 @@
+package org.dna.mqtt.moquette.parser.netty;
+
+import io.netty.buffer.ByteBuf;
+import io.netty.channel.ChannelHandlerContext;
+import java.util.List;
+import org.dna.mqtt.moquette.proto.messages.AbstractMessage;
+import org.dna.mqtt.moquette.proto.messages.SubAckMessage;
+
+/**
+ *
+ * @author andrea
+ */
+class SubAckDecoder extends DemuxDecoder {
+
+    @Override
+    void decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) throws Exception {
+        //Common decoding part
+        in.resetReaderIndex();
+        SubAckMessage message = new SubAckMessage();
+        if (!decodeCommonHeader(message, in)) {
+            in.resetReaderIndex();
+            return;
+        }
+        int remainingLength = message.getRemainingLength();
+        
+        //MessageID
+        message.setMessageID(in.readUnsignedShort());
+        remainingLength -= 2;
+        
+        //Qos array
+        if (in.readableBytes() < remainingLength ) {
+            in.resetReaderIndex();
+            return;
+        }
+        for (int i = 0; i < remainingLength; i++) {
+            byte qos = in.readByte();
+            message.addType(AbstractMessage.QOSType.values()[qos]);
+        }
+        
+        out.add(message);
+    }
+    
+}

netty_parser/src/main/java/org/dna/mqtt/moquette/parser/netty/SubAckEncoder.java

@@ -0,0 +1,36 @@
+package org.dna.mqtt.moquette.parser.netty;
+
+import io.netty.buffer.ByteBuf;
+import io.netty.channel.ChannelHandlerContext;
+import org.dna.mqtt.moquette.proto.messages.AbstractMessage;
+import org.dna.mqtt.moquette.proto.messages.SubAckMessage;
+
+/**
+ *
+ * @author andrea
+ */
+class SubAckEncoder extends DemuxEncoder<SubAckMessage> {
+
+    @Override
+    protected void encode(ChannelHandlerContext chc, SubAckMessage message, ByteBuf out) {
+        if (message.types().isEmpty()) {
+            throw new IllegalArgumentException("Found a suback message with empty topics");
+        }
+
+        ByteBuf variableHeaderBuff = chc.alloc().buffer(4);
+        variableHeaderBuff.writeShort(message.getMessageID());
+        for (AbstractMessage.QOSType c : message.types()) {
+            variableHeaderBuff.writeByte(c.ordinal());
+        }
+
+        int variableHeaderSize = variableHeaderBuff.readableBytes();
+        ByteBuf buff = chc.alloc().buffer(2 + variableHeaderSize);
+
+        buff.writeByte(AbstractMessage.SUBACK << 4 );
+        buff.writeBytes(Utils.encodeRemainingLength(variableHeaderSize));
+        buff.writeBytes(variableHeaderBuff);
+
+        out.writeBytes(buff);
+    }
+    
+}