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

Example 51 with MqttException

use of software.amazon.awssdk.crt.mqtt.MqttException in project aws-greengrass-nucleus by aws-greengrass.

the class IotJobsClientWrapper method SubscribeToDescribeJobExecutionRejected.

@Override
public CompletableFuture<Integer> SubscribeToDescribeJobExecutionRejected(DescribeJobExecutionSubscriptionRequest request, QualityOfService qos, Consumer<RejectedError> handler, Consumer<Exception> exceptionHandler) {
    if (request.jobId == null || request.thingName == null) {
        CompletableFuture result = new CompletableFuture();
        result.completeExceptionally(new MqttException("DescribeJobExecutionSubscriptionRequest must have a non-null jobId and a non-null thingName"));
        return result;
    }
    String topic = String.format(JOB_DESCRIBE_REJECTED_TOPIC, request.thingName, request.jobId);
    Consumer<MqttMessage> messageHandler = describeJobSubscriptionCbs.computeIfAbsent(new Pair<>(handler, exceptionHandler), (k) -> (message) -> {
        try {
            String payload = new String(message.getPayload(), StandardCharsets.UTF_8);
            RejectedError response = this.gson.fromJson(payload, RejectedError.class);
            handler.accept(response);
        } catch (Exception e) {
            if (exceptionHandler != null) {
                exceptionHandler.accept(e);
            }
        }
    });
    return this.connection.subscribe(topic, qos, messageHandler);
}

Example 52 with MqttException

use of software.amazon.awssdk.crt.mqtt.MqttException in project aws-greengrass-nucleus by aws-greengrass.

the class ShadowDeploymentListener method subscribeToShadowTopics.

/*
        Subscribe to "$aws/things/{thingName}/shadow/update/accepted" topic to get notified when shadow is updated
        Subscribe to "$aws/things/{thingName}/shadow/update/rejected" topic to get notified when an update is rejected
        Subscribe to "$aws/things/{thingName}/shadow/get/accepted" topic to retrieve shadow by publishing to get topic
     */
private void subscribeToShadowTopics() {
    logger.atDebug().log(SUBSCRIBING_TO_SHADOW_TOPICS_MESSAGE);
    while (true) {
        try {
            UpdateNamedShadowSubscriptionRequest updateNamedShadowSubscriptionRequest = new UpdateNamedShadowSubscriptionRequest();
            updateNamedShadowSubscriptionRequest.shadowName = DEPLOYMENT_SHADOW_NAME;
            updateNamedShadowSubscriptionRequest.thingName = thingName;
            iotShadowClient.SubscribeToUpdateNamedShadowAccepted(updateNamedShadowSubscriptionRequest, QualityOfService.AT_LEAST_ONCE, updateShadowResponse -> shadowUpdated(updateShadowResponse.state.desired, updateShadowResponse.state.reported, updateShadowResponse.version), (e) -> logger.atError().log("Error processing updateShadowResponse", e)).get(TIMEOUT_FOR_SUBSCRIBING_TO_TOPICS_SECONDS, TimeUnit.SECONDS);
            logger.debug("Subscribed to update named shadow accepted topic");
            iotShadowClient.SubscribeToUpdateNamedShadowRejected(updateNamedShadowSubscriptionRequest, QualityOfService.AT_LEAST_ONCE, updateShadowRejected -> handleNamedShadowRejectedEvent(), (e) -> logger.atError().log("Error processing named shadow update rejected response", e)).get(TIMEOUT_FOR_SUBSCRIBING_TO_TOPICS_SECONDS, TimeUnit.SECONDS);
            logger.debug("Subscribed to update named shadow rejected topic");
            GetNamedShadowSubscriptionRequest getNamedShadowSubscriptionRequest = new GetNamedShadowSubscriptionRequest();
            getNamedShadowSubscriptionRequest.shadowName = DEPLOYMENT_SHADOW_NAME;
            getNamedShadowSubscriptionRequest.thingName = thingName;
            iotShadowClient.SubscribeToGetNamedShadowAccepted(getNamedShadowSubscriptionRequest, QualityOfService.AT_LEAST_ONCE, getShadowResponse -> shadowUpdated(getShadowResponse.state.desired, getShadowResponse.state.reported, getShadowResponse.version), (e) -> logger.atError().log("Error processing getShadowResponse", e)).get(TIMEOUT_FOR_SUBSCRIBING_TO_TOPICS_SECONDS, TimeUnit.SECONDS);
            logger.debug("Subscribed to get named shadow topic");
            return;
        } catch (ExecutionException e) {
            Throwable cause = e.getCause();
            if (cause instanceof MqttException || cause instanceof TimeoutException) {
                logger.atWarn().setCause(cause).log("Caught exception while subscribing to shadow topics, " + "will retry shortly");
            } else if (cause instanceof InterruptedException) {
                logger.atWarn().log("Interrupted while subscribing to shadow topics");
                return;
            } else {
                logger.atError().setCause(e).log("Caught exception while subscribing to shadow topics, will retry shortly");
            }
        } catch (TimeoutException e) {
            logger.atWarn().setCause(e).log("Subscribe to shadow topics timed out, will retry shortly");
        } catch (InterruptedException e) {
            // Since this method can run as runnable cannot throw exception so handling exceptions here
            logger.atWarn().log("Interrupted while subscribing to shadow topics");
            return;
        }
        try {
            // Wait for sometime and then try to subscribe again
            Thread.sleep(WAIT_TIME_TO_SUBSCRIBE_AGAIN_IN_MS + JITTER.nextInt(10_000));
        } catch (InterruptedException interruptedException) {
            logger.atWarn().log("Interrupted while subscribing to device shadow topics");
            return;
        }
    }
}