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

Introduction

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

Prototype

MqttMessageType UNSUBSCRIBE

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Usage

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

License:Apache License

/**
 * See {@link MqttClient#unsubscribe(String, Handler)} )} for more details
 *///from  ww w  . java 2 s. c o  m
@Override
public MqttClient unsubscribe(String topic, Handler<AsyncResult<Integer>> unsubscribeSentHandler) {

    MqttFixedHeader fixedHeader = new MqttFixedHeader(MqttMessageType.UNSUBSCRIBE, false, AT_LEAST_ONCE, false,
            0);

    MqttMessageIdVariableHeader variableHeader = MqttMessageIdVariableHeader.from(nextMessageId());

    MqttUnsubscribePayload payload = new MqttUnsubscribePayload(Stream.of(topic).collect(Collectors.toList()));

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

    this.write(unsubscribe);

    if (unsubscribeSentHandler != null) {
        unsubscribeSentHandler.handle(Future.succeededFuture(variableHeader.messageId()));
    }
    return this;
}

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

License:Apache License

private void checkSubscribtions(String topic, Promise<Void> promise) {
    if (!(this.subscriptions.containsKey(topic) && this.subscriptions.get(topic).size() != 0)
            && this.serverSubscriptions.contains(topic)) {
        MqttFixedHeader fixedHeader = new MqttFixedHeader(MqttMessageType.UNSUBSCRIBE, false,
                MqttQoS.AT_LEAST_ONCE, false, 0);
        MqttMessageIdVariableHeader variableHeader = getNewMessageId();
        MqttUnsubscribePayload payload = new MqttUnsubscribePayload(Collections.singletonList(topic));
        MqttUnsubscribeMessage message = new MqttUnsubscribeMessage(fixedHeader, variableHeader, payload);

        MqttPendingUnsubscription pendingUnsubscription = new MqttPendingUnsubscription(promise, topic,
                message);/*from w  ww. java 2 s .co m*/
        this.pendingServerUnsubscribes.put(variableHeader.messageId(), pendingUnsubscription);
        pendingUnsubscription.startRetransmissionTimer(this.eventLoop.next(), this::sendAndFlushPacket);

        this.sendAndFlushPacket(message);
    } else {
        promise.setSuccess(null);
    }
}

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