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

Introduction

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

Prototype

MqttMessageType PUBREC

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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 w  w  .j a  v  a 2  s. com

        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.MqttClientImpl.java

License:Apache License

/**
 * Sends PUBREC packet to server/*from  ww  w .  j a  va  2 s  .  com*/
 *
 * @param publishMessage a PUBLISH message to acknowledge
 */
void publishReceived(MqttPublishMessage publishMessage) {

    MqttFixedHeader fixedHeader = new MqttFixedHeader(MqttMessageType.PUBREC, false, AT_MOST_ONCE, false, 0);

    MqttMessageIdVariableHeader variableHeader = MqttMessageIdVariableHeader.from(publishMessage.messageId());

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

    qos2inbound.put(publishMessage.messageId(), publishMessage);
    this.write(pubrec);
}

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

License:Apache License

public MqttEndpointImpl publishReceived(int publishMessageId) {

    this.checkConnected();

    MqttFixedHeader fixedHeader = new MqttFixedHeader(MqttMessageType.PUBREC, false, MqttQoS.AT_MOST_ONCE,
            false, 0);/*from   w  w  w  . j  a va2 s .c  o  m*/
    MqttMessageIdVariableHeader variableHeader = MqttMessageIdVariableHeader.from(publishMessageId);

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

    this.write(pubrec);

    return this;
}

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

License:Apache License

public static MqttMessage pubrec(int messageId) {
    MqttFixedHeader fixedHeader = new MqttFixedHeader(MqttMessageType.PUBREC, false, MqttQoS.AT_MOST_ONCE,
            false, 2);/*from   w w  w.  ja va  2s  . co m*/
    MqttMessageIdVariableHeader variableHeader = MqttMessageIdVariableHeader.from(messageId);

    return new MqttMessage(fixedHeader, variableHeader);
}

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

License:Apache License

void sendPubRec(int messageId) {
    sendPublishProtocolControlMessage(messageId, MqttMessageType.PUBREC);
}

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From source file:org.thingsboard.mqtt.MqttChannelHandler.java

License:Apache License

private void handlePublish(Channel channel, MqttPublishMessage message) {
    switch (message.fixedHeader().qosLevel()) {
    case AT_MOST_ONCE:
        invokeHandlersForIncomingPublish(message);
        break;/*from  w w w. ja  v a2s .co  m*/

    case AT_LEAST_ONCE:
        invokeHandlersForIncomingPublish(message);
        if (message.variableHeader().messageId() != -1) {
            MqttFixedHeader fixedHeader = new MqttFixedHeader(MqttMessageType.PUBACK, false,
                    MqttQoS.AT_MOST_ONCE, false, 0);
            MqttMessageIdVariableHeader variableHeader = MqttMessageIdVariableHeader
                    .from(message.variableHeader().messageId());
            channel.writeAndFlush(new MqttPubAckMessage(fixedHeader, variableHeader));
        }
        break;

    case EXACTLY_ONCE:
        if (message.variableHeader().messageId() != -1) {
            MqttFixedHeader fixedHeader = new MqttFixedHeader(MqttMessageType.PUBREC, false,
                    MqttQoS.AT_MOST_ONCE, false, 0);
            MqttMessageIdVariableHeader variableHeader = MqttMessageIdVariableHeader
                    .from(message.variableHeader().messageId());
            MqttMessage pubrecMessage = new MqttMessage(fixedHeader, variableHeader);

            MqttIncomingQos2Publish incomingQos2Publish = new MqttIncomingQos2Publish(message, pubrecMessage);
            this.client.getQos2PendingIncomingPublishes().put(message.variableHeader().messageId(),
                    incomingQos2Publish);
            message.payload().retain();
            incomingQos2Publish.startPubrecRetransmitTimer(this.client.getEventLoop().next(),
                    this.client::sendAndFlushPacket);

            channel.writeAndFlush(pubrecMessage);
        }
        break;
    }
}

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