Examples with MqttMessage software.amazon.awssdk.crt.mqtt.MqttMessage used on opensource projects

Example 16 with MqttMessage

use of software.amazon.awssdk.crt.mqtt.MqttMessage in project aws-iot-device-sdk-java-v2 by aws.

the class IotShadowClient method SubscribeToDeleteShadowRejected.

/**
 * Subscribes to the rejected topic for the DeleteShadow operation
 *
 * Once subscribed, `handler` is invoked each time a message matching
 * the `topic` is received. It is possible for such messages to arrive before
 * the SUBACK is received.
 *
 * AWS documentation: https://docs.aws.amazon.com/iot/latest/developerguide/device-shadow-mqtt.html#delete-rejected-pub-sub-topic
 *
 * @param request Subscription request configuration
 * @param qos Maximum requested QoS that server may use when sending messages to the client.
 *            The server may grant a lower QoS in the SUBACK
 * @param handler callback function to invoke with messages received on the subscription topic
 * @param exceptionHandler callback function to invoke if an exception occurred deserializing a message
 *
 * @return a future containing the MQTT packet id used to perform the subscribe operation
 */
public CompletableFuture<Integer> SubscribeToDeleteShadowRejected(DeleteShadowSubscriptionRequest request, QualityOfService qos, Consumer<ErrorResponse> handler, Consumer<Exception> exceptionHandler) {
    String topic = "$aws/things/{thingName}/shadow/delete/rejected";
    if (request.thingName == null) {
        CompletableFuture<Integer> result = new CompletableFuture<Integer>();
        result.completeExceptionally(new MqttException("DeleteShadowSubscriptionRequest must have a non-null thingName"));
        return result;
    }
    topic = topic.replace("{thingName}", request.thingName);
    Consumer<MqttMessage> messageHandler = (message) -> {
        try {
            String payload = new String(message.getPayload(), StandardCharsets.UTF_8);
            ErrorResponse response = gson.fromJson(payload, ErrorResponse.class);
            handler.accept(response);
        } catch (Exception e) {
            if (exceptionHandler != null) {
                exceptionHandler.accept(e);
            }
        }
    };
    return connection.subscribe(topic, qos, messageHandler);
}

Example 17 with MqttMessage

use of software.amazon.awssdk.crt.mqtt.MqttMessage in project aws-iot-device-sdk-java-v2 by aws.

the class IotShadowClient method SubscribeToNamedShadowDeltaUpdatedEvents.

/**
 * Subscribe to NamedShadowDelta events for a named shadow of an AWS IoT thing.
 *
 * Once subscribed, `handler` is invoked each time a message matching
 * the `topic` is received. It is possible for such messages to arrive before
 * the SUBACK is received.
 *
 * AWS documentation: https://docs.aws.amazon.com/iot/latest/developerguide/device-shadow-mqtt.html#update-delta-pub-sub-topic
 *
 * @param request Subscription request configuration
 * @param qos Maximum requested QoS that server may use when sending messages to the client.
 *            The server may grant a lower QoS in the SUBACK
 * @param handler callback function to invoke with messages received on the subscription topic
 * @param exceptionHandler callback function to invoke if an exception occurred deserializing a message
 *
 * @return a future containing the MQTT packet id used to perform the subscribe operation
 */
public CompletableFuture<Integer> SubscribeToNamedShadowDeltaUpdatedEvents(NamedShadowDeltaUpdatedSubscriptionRequest request, QualityOfService qos, Consumer<ShadowDeltaUpdatedEvent> handler, Consumer<Exception> exceptionHandler) {
    String topic = "$aws/things/{thingName}/shadow/name/{shadowName}/update/delta";
    if (request.thingName == null) {
        CompletableFuture<Integer> result = new CompletableFuture<Integer>();
        result.completeExceptionally(new MqttException("NamedShadowDeltaUpdatedSubscriptionRequest must have a non-null thingName"));
        return result;
    }
    topic = topic.replace("{thingName}", request.thingName);
    if (request.shadowName == null) {
        CompletableFuture<Integer> result = new CompletableFuture<Integer>();
        result.completeExceptionally(new MqttException("NamedShadowDeltaUpdatedSubscriptionRequest must have a non-null shadowName"));
        return result;
    }
    topic = topic.replace("{shadowName}", request.shadowName);
    Consumer<MqttMessage> messageHandler = (message) -> {
        try {
            String payload = new String(message.getPayload(), StandardCharsets.UTF_8);
            ShadowDeltaUpdatedEvent response = gson.fromJson(payload, ShadowDeltaUpdatedEvent.class);
            handler.accept(response);
        } catch (Exception e) {
            if (exceptionHandler != null) {
                exceptionHandler.accept(e);
            }
        }
    };
    return connection.subscribe(topic, qos, messageHandler);
}

Example 18 with MqttMessage

use of software.amazon.awssdk.crt.mqtt.MqttMessage in project aws-iot-device-sdk-java-v2 by aws.

the class IotShadowClient method SubscribeToUpdateShadowRejected.

/**
 * Subscribes to the rejected topic for the UpdateShadow operation
 *
 * Once subscribed, `handler` is invoked each time a message matching
 * the `topic` is received. It is possible for such messages to arrive before
 * the SUBACK is received.
 *
 * AWS documentation: https://docs.aws.amazon.com/iot/latest/developerguide/device-shadow-mqtt.html#update-rejected-pub-sub-topic
 *
 * @param request Subscription request configuration
 * @param qos Maximum requested QoS that server may use when sending messages to the client.
 *            The server may grant a lower QoS in the SUBACK
 * @param handler callback function to invoke with messages received on the subscription topic
 * @param exceptionHandler callback function to invoke if an exception occurred deserializing a message
 *
 * @return a future containing the MQTT packet id used to perform the subscribe operation
 */
public CompletableFuture<Integer> SubscribeToUpdateShadowRejected(UpdateShadowSubscriptionRequest request, QualityOfService qos, Consumer<ErrorResponse> handler, Consumer<Exception> exceptionHandler) {
    String topic = "$aws/things/{thingName}/shadow/update/rejected";
    if (request.thingName == null) {
        CompletableFuture<Integer> result = new CompletableFuture<Integer>();
        result.completeExceptionally(new MqttException("UpdateShadowSubscriptionRequest must have a non-null thingName"));
        return result;
    }
    topic = topic.replace("{thingName}", request.thingName);
    Consumer<MqttMessage> messageHandler = (message) -> {
        try {
            String payload = new String(message.getPayload(), StandardCharsets.UTF_8);
            ErrorResponse response = gson.fromJson(payload, ErrorResponse.class);
            handler.accept(response);
        } catch (Exception e) {
            if (exceptionHandler != null) {
                exceptionHandler.accept(e);
            }
        }
    };
    return connection.subscribe(topic, qos, messageHandler);
}

Example 19 with MqttMessage

use of software.amazon.awssdk.crt.mqtt.MqttMessage in project aws-iot-device-sdk-java-v2 by aws.

the class IotShadowClient method SubscribeToNamedShadowUpdatedEvents.

/**
 * Subscribe to ShadowUpdated events for a named shadow of an AWS IoT thing.
 *
 * Once subscribed, `handler` is invoked each time a message matching
 * the `topic` is received. It is possible for such messages to arrive before
 * the SUBACK is received.
 *
 * AWS documentation: https://docs.aws.amazon.com/iot/latest/developerguide/device-shadow-mqtt.html#update-documents-pub-sub-topic
 *
 * @param request Subscription request configuration
 * @param qos Maximum requested QoS that server may use when sending messages to the client.
 *            The server may grant a lower QoS in the SUBACK
 * @param handler callback function to invoke with messages received on the subscription topic
 * @param exceptionHandler callback function to invoke if an exception occurred deserializing a message
 *
 * @return a future containing the MQTT packet id used to perform the subscribe operation
 */
public CompletableFuture<Integer> SubscribeToNamedShadowUpdatedEvents(NamedShadowUpdatedSubscriptionRequest request, QualityOfService qos, Consumer<ShadowUpdatedEvent> handler, Consumer<Exception> exceptionHandler) {
    String topic = "$aws/things/{thingName}/shadow/name/{shadowName}/update/documents";
    if (request.shadowName == null) {
        CompletableFuture<Integer> result = new CompletableFuture<Integer>();
        result.completeExceptionally(new MqttException("NamedShadowUpdatedSubscriptionRequest must have a non-null shadowName"));
        return result;
    }
    topic = topic.replace("{shadowName}", request.shadowName);
    if (request.thingName == null) {
        CompletableFuture<Integer> result = new CompletableFuture<Integer>();
        result.completeExceptionally(new MqttException("NamedShadowUpdatedSubscriptionRequest must have a non-null thingName"));
        return result;
    }
    topic = topic.replace("{thingName}", request.thingName);
    Consumer<MqttMessage> messageHandler = (message) -> {
        try {
            String payload = new String(message.getPayload(), StandardCharsets.UTF_8);
            ShadowUpdatedEvent response = gson.fromJson(payload, ShadowUpdatedEvent.class);
            handler.accept(response);
        } catch (Exception e) {
            if (exceptionHandler != null) {
                exceptionHandler.accept(e);
            }
        }
    };
    return connection.subscribe(topic, qos, messageHandler);
}

Example 20 with MqttMessage

use of software.amazon.awssdk.crt.mqtt.MqttMessage in project aws-iot-device-sdk-java-v2 by aws.

the class IotShadowClient method PublishGetNamedShadow.

/**
 * Gets a named shadow for an AWS IoT thing.
 *
 * If the device is offline, the PUBLISH packet will be sent once the connection resumes.
 *
 * AWS documentation: https://docs.aws.amazon.com/iot/latest/developerguide/device-shadow-mqtt.html#get-pub-sub-topic
 *
 * @param request Message to be serialized and sent
 * @param qos Quality of Service for delivering this message
 * @return a future containing the MQTT packet id used to perform the publish operation
 *
 * * For QoS 0, completes as soon as the packet is sent.
 * * For QoS 1, completes when PUBACK is received.
 * * QoS 2 is not supported by AWS IoT.
 */
public CompletableFuture<Integer> PublishGetNamedShadow(GetNamedShadowRequest request, QualityOfService qos) {
    String topic = "$aws/things/{thingName}/shadow/name/{shadowName}/get";
    if (request.shadowName == null) {
        CompletableFuture<Integer> result = new CompletableFuture<Integer>();
        result.completeExceptionally(new MqttException("GetNamedShadowRequest must have a non-null shadowName"));
        return result;
    }
    topic = topic.replace("{shadowName}", request.shadowName);
    if (request.thingName == null) {
        CompletableFuture<Integer> result = new CompletableFuture<Integer>();
        result.completeExceptionally(new MqttException("GetNamedShadowRequest must have a non-null thingName"));
        return result;
    }
    topic = topic.replace("{thingName}", request.thingName);
    String payloadJson = gson.toJson(request);
    MqttMessage message = new MqttMessage(topic, payloadJson.getBytes(StandardCharsets.UTF_8));
    return connection.publish(message, qos, false);
}