Example usage for io.netty.handler.codec.mqtt MqttMessageType SUBACK

Introduction

In this page you can find the example usage for io.netty.handler.codec.mqtt MqttMessageType SUBACK.

Prototype

MqttMessageType SUBACK

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Usage

From source file:com.caricah.iotracah.server.mqttserver.transform.IOTMqttTransformerImpl.java

License:Apache License

@Override
public MqttMessage toServerMessage(IOTMessage internalMessage) {

    switch (internalMessage.getMessageType()) {

    case PublishMessage.MESSAGE_TYPE:

        PublishMessage pubMsg = (PublishMessage) internalMessage;
        //We generate a publish message.
        MqttPublishVariableHeader respVariableHeader = new MqttPublishVariableHeader(pubMsg.getTopic(),
                pubMsg.getMessageId());/*from   w ww.ja  v  a2s  . c  om*/

        MqttFixedHeader respFixedHeader = new MqttFixedHeader(MqttMessageType.PUBLISH, pubMsg.getIsDuplicate(),
                MqttQoS.valueOf(pubMsg.getQos()), pubMsg.getIsRetain(), 0);
        ByteBuf content = Unpooled.wrappedBuffer((byte[]) pubMsg.getPayload());

        return MqttMessageFactory.newMessage(respFixedHeader, respVariableHeader, content);

    case AcknowledgeMessage.MESSAGE_TYPE:

        //Generate a PUBACK for qos 1 messages.
        AcknowledgeMessage ackMsg = (AcknowledgeMessage) internalMessage;
        MqttFixedHeader ackFixedHeader = new MqttFixedHeader(MqttMessageType.PUBACK, ackMsg.isDup(),
                MqttQoS.valueOf(ackMsg.getQos()), ackMsg.isRetain(), 0);
        MqttMessageIdVariableHeader msgIdVariableHeader = MqttMessageIdVariableHeader
                .from(ackMsg.getMessageId());
        return MqttMessageFactory.newMessage(ackFixedHeader, msgIdVariableHeader, null);

    case PublishReceivedMessage.MESSAGE_TYPE:

        //We need to generate a PUBREC message to acknowledge reception of message.
        PublishReceivedMessage pubrec = (PublishReceivedMessage) internalMessage;
        MqttFixedHeader recFixedHeader = new MqttFixedHeader(MqttMessageType.PUBREC, false,
                MqttQoS.valueOf(pubrec.getQos()), false, 0);
        msgIdVariableHeader = MqttMessageIdVariableHeader.from(pubrec.getMessageId());
        return MqttMessageFactory.newMessage(recFixedHeader, msgIdVariableHeader, null);

    case ReleaseMessage.MESSAGE_TYPE:

        //We need to generate a PUBREL message to release cached message.
        ReleaseMessage pubrel = (ReleaseMessage) internalMessage;
        MqttFixedHeader relFixedHeader = new MqttFixedHeader(MqttMessageType.PUBREL, pubrel.isDup(),
                MqttQoS.valueOf(pubrel.getQos()), false, 0);
        msgIdVariableHeader = MqttMessageIdVariableHeader.from(pubrel.getMessageId());
        return MqttMessageFactory.newMessage(relFixedHeader, msgIdVariableHeader, null);

    case CompleteMessage.MESSAGE_TYPE:

        //We need to generate a PUBCOMP message to acknowledge finalization of transmission of qos 2 message.
        CompleteMessage destroyMessage = (CompleteMessage) internalMessage;
        MqttFixedHeader compFixedHeader = new MqttFixedHeader(MqttMessageType.PUBCOMP, false,
                MqttQoS.valueOf(destroyMessage.getQos()), false, 0);
        msgIdVariableHeader = MqttMessageIdVariableHeader.from(destroyMessage.getMessageId());
        return MqttMessageFactory.newMessage(compFixedHeader, msgIdVariableHeader, null);

    case Ping.MESSAGE_TYPE:

        Ping ping = (Ping) internalMessage;
        //We need to generate a PINGRESP message to respond to a PINGREQ.
        recFixedHeader = new MqttFixedHeader(MqttMessageType.PINGRESP, ping.isDup(),
                MqttQoS.valueOf(ping.getQos()), ping.isRetain(), 0);
        return MqttMessageFactory.newMessage(recFixedHeader, null, null);

    case ConnectAcknowledgeMessage.MESSAGE_TYPE:

        ConnectAcknowledgeMessage connAck = (ConnectAcknowledgeMessage) internalMessage;
        MqttFixedHeader connAckFixedHeader = new MqttFixedHeader(MqttMessageType.CONNACK, connAck.isDup(),
                MqttQoS.valueOf(connAck.getQos()), connAck.isRetain(), 0);
        MqttConnAckVariableHeader conAckVariableHeader = new MqttConnAckVariableHeader(connAck.getReturnCode());
        //Todo: Raise netty codec issue for lack of codec 3.2.2.2 Session Present flag.

        return MqttMessageFactory.newMessage(connAckFixedHeader, conAckVariableHeader, null);

    case SubscribeAcknowledgeMessage.MESSAGE_TYPE:

        SubscribeAcknowledgeMessage subAckMsg = (SubscribeAcknowledgeMessage) internalMessage;
        MqttSubAckPayload payload = new MqttSubAckPayload(subAckMsg.getGrantedQos());

        MqttFixedHeader subAckFixedHeader = new MqttFixedHeader(MqttMessageType.SUBACK, subAckMsg.isDup(),
                MqttQoS.valueOf(subAckMsg.getQos()), subAckMsg.isRetain(), 0);
        MqttMessageIdVariableHeader subAckVariableHeader = MqttMessageIdVariableHeader
                .from(subAckMsg.getMessageId());
        return MqttMessageFactory.newMessage(subAckFixedHeader, subAckVariableHeader, payload);

    case UnSubscribeAcknowledgeMessage.MESSAGE_TYPE:

        UnSubscribeAcknowledgeMessage unSubAckMsg = (UnSubscribeAcknowledgeMessage) internalMessage;
        respFixedHeader = new MqttFixedHeader(MqttMessageType.UNSUBACK, unSubAckMsg.isDup(),
                MqttQoS.valueOf(unSubAckMsg.getQos()), unSubAckMsg.isRetain(), 0);
        MqttMessageIdVariableHeader variableHeader = MqttMessageIdVariableHeader
                .from(unSubAckMsg.getMessageId());
        return MqttMessageFactory.newMessage(respFixedHeader, variableHeader, null);

    default:
        /**
         *
         * Internally these are not expected to get here.
         * In such cases we just return a null
         * and log this anomaly as a gross error.
         *
         *
         * if(internalMessage instanceof ConnectMessage ||
         * internalMessage instanceof SubscribeMessage ||
         * internalMessage instanceof UnSubscribeMessage ||
         * internalMessage instanceof DisconnectMessage ||
         * internalMessage instanceof WillMessage ){
         * }
         **/

        return null;
    }

}

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From source file:io.vertx.mqtt.impl.MqttEndpointImpl.java

License:Apache License

public MqttEndpointImpl subscribeAcknowledge(int subscribeMessageId, List<MqttQoS> grantedQoSLevels) {

    this.checkConnected();

    MqttFixedHeader fixedHeader = new MqttFixedHeader(MqttMessageType.SUBACK, false, MqttQoS.AT_MOST_ONCE,
            false, 0);//  ww w.  j av  a 2 s.  co  m
    MqttMessageIdVariableHeader variableHeader = MqttMessageIdVariableHeader.from(subscribeMessageId);

    MqttSubAckPayload payload = new MqttSubAckPayload(
            grantedQoSLevels.stream().mapToInt(MqttQoS::value).toArray());

    io.netty.handler.codec.mqtt.MqttMessage suback = MqttMessageFactory.newMessage(fixedHeader, variableHeader,
            payload);

    this.write(suback);

    return this;
}

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From source file:net.anyflow.lannister.message.MessageFactory.java

License:Apache License

public static MqttSubAckMessage suback(int messageId, List<Integer> grantedQoSLevels) {
    MqttFixedHeader fixedHeader = new MqttFixedHeader(MqttMessageType.SUBACK, false, MqttQoS.AT_MOST_ONCE,
            false, 2 + grantedQoSLevels.size());
    MqttMessageIdVariableHeader variableHeader = MqttMessageIdVariableHeader.from(messageId);
    MqttSubAckPayload payload = new MqttSubAckPayload(grantedQoSLevels);

    return new MqttSubAckMessage(fixedHeader, variableHeader, payload);
}

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From source file:org.apache.activemq.artemis.core.protocol.mqtt.MQTTProtocolHandler.java

License:Apache License

void handleSubscribe(MqttSubscribeMessage message) throws Exception {
    MQTTSubscriptionManager subscriptionManager = session.getSubscriptionManager();
    int[] qos = subscriptionManager.addSubscriptions(message.payload().topicSubscriptions());

    MqttFixedHeader header = new MqttFixedHeader(MqttMessageType.SUBACK, false, MqttQoS.AT_MOST_ONCE, false, 0);
    MqttSubAckMessage ack = new MqttSubAckMessage(header, message.variableHeader(), new MqttSubAckPayload(qos));
    sendToClient(ack);//from w w  w.  j  a v a  2s .c o m
}

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