Use getDecoderManifest with an AWS SDK

The following code examples show how to use getDecoderManifest.

Action examples are code excerpts from larger programs and must be run in context. You can see this action in context in the following code example:

• Learn the basics

Java

SDK for Java 2.x

Note

There's more on GitHub. Find the complete example and learn how to set up and run in the AWS Code Examples Repository.

    /**
     * Waits for the decoder manifest to become active.
     *
     * @param decoderName the name of the decoder to wait for
     * @return a {@link CompletableFuture} that completes when the decoder manifest becomes active, or exceptionally if an error occurs or the manifest becomes invalid
     */
    public CompletableFuture<Void> waitForDecoderManifestActiveAsync(String decoderName) {
        CompletableFuture<Void> result = new CompletableFuture<>();

        ScheduledExecutorService scheduler = Executors.newSingleThreadScheduledExecutor();
        AtomicInteger secondsElapsed = new AtomicInteger(0);
        AtomicReference<ManifestStatus> lastStatus = new AtomicReference<>(ManifestStatus.DRAFT);

        logger.info(" Elapsed: 0s | Decoder Status: DRAFT");

        final Runnable pollTask = new Runnable() {
            @Override
            public void run() {
                int elapsed = secondsElapsed.incrementAndGet();

                // Check status every 5 seconds
                if (elapsed % 5 == 0) {
                    GetDecoderManifestRequest request = GetDecoderManifestRequest.builder()
                            .name(decoderName)
                            .build();

                    getAsyncClient().getDecoderManifest(request)
                            .whenComplete((response, exception) -> {
                                if (exception != null) {
                                    Throwable cause = exception instanceof CompletionException ? exception.getCause() : exception;

                                    scheduler.shutdown();
                                    if (cause instanceof ResourceNotFoundException) {
                                        result.completeExceptionally(new RuntimeException("Decoder manifest not found: " + cause.getMessage(), cause));
                                    } else {
                                        result.completeExceptionally(new RuntimeException("Error while polling decoder manifest status: " + exception.getMessage(), exception));
                                    }
                                    return;
                                }

                                ManifestStatus status = response.status();
                                lastStatus.set(status);

                                if (status == ManifestStatus.ACTIVE) {
                                    logger.info("\r Elapsed: {}s | Decoder Status: ACTIVE", elapsed);
                                    scheduler.shutdown();
                                    result.complete(null);
                                } else if (status == ManifestStatus.INVALID) {
                                    logger.info("\r Elapsed: {}s | Decoder Status: INVALID", elapsed);
                                    scheduler.shutdown();
                                    result.completeExceptionally(new RuntimeException("Decoder manifest became INVALID. Cannot proceed."));
                                } else {
                                    logger.info("\r⏱ Elapsed: {}s | Decoder Status: {}", elapsed, status);
                                }
                            });
                } else {
                    logger.info("\r Elapsed: {}s | Decoder Status: {}", elapsed, lastStatus.get());
                }
            }
        };

        // Start the task with an initial delay of 1 second, and repeat every second
        scheduler.scheduleAtFixedRate(pollTask, 1, 1, TimeUnit.SECONDS);
        return result;
    }

• For API details, see getDecoderManifest in AWS SDK for Java 2.x API Reference.

Kotlin

SDK for Kotlin

Note

There's more on GitHub. Find the complete example and learn how to set up and run in the AWS Code Examples Repository.

/**
 * Waits for the specified model manifest to become active.
 *
 * @param decNameVal the name of the model manifest to wait for
 */
suspend fun waitForDecoderManifestActive(decNameVal: String) {
    var elapsedSeconds = 0
    var lastStatus: ManifestStatus = ManifestStatus.Draft

    print("⏳ Elapsed: 0s | Status: DRAFT")
    IotFleetWiseClient.fromEnvironment { region = "us-east-1" }.use { fleetwiseClient ->
        while (true) {
            delay(1000)
            elapsedSeconds++
            if (elapsedSeconds % 5 == 0) {
                val request = GetDecoderManifestRequest {
                    name = decNameVal
                }

                val response = fleetwiseClient.getDecoderManifest(request)
                lastStatus = response.status ?: ManifestStatus.Draft

                when (lastStatus) {
                    ManifestStatus.Active -> {
                        print("\rElapsed: ${elapsedSeconds}s | Status: ACTIVE ✅\n")
                        return
                    }

                    ManifestStatus.Invalid -> {
                        print("\rElapsed: ${elapsedSeconds}s | Status: INVALID ❌\n")
                        throw RuntimeException("Model manifest became INVALID. Cannot proceed.")
                    }

                    else -> {
                        print("\r Elapsed: ${elapsedSeconds}s | Status: $lastStatus")
                    }
                }
            } else {
                print("\r Elapsed: ${elapsedSeconds}s | Status: $lastStatus")
            }
        }
    }
}

• For API details, see getDecoderManifest in AWS SDK for Kotlin API reference.