Gunakan GetAssetPropertyValue dengan AWS SDK atau CLI

Untuk mengambil nilai aset properti saat ini

get-asset-property-valueContoh berikut mengambil daya total aset turbin angin saat ini.

aws iotsitewise get-asset-property-value \
    --asset-id a1b2c3d4-5678-90ab-cdef-33333EXAMPLE \
    --property-id a1b2c3d4-5678-90ab-cdef-66666EXAMPLE

Output:

{
    "propertyValue": {
        "value": {
            "doubleValue": 6890.8677520453875
        },
        "timestamp": {
            "timeInSeconds": 1580853000,
            "offsetInNanos": 0
        },
        "quality": "GOOD"
    }
}

Untuk informasi selengkapnya, lihat Menanyakan nilai properti aset saat ini di Panduan AWS Pengguna SiteWise IoT.

    /**
     * Fetches the value of an asset property.
     *
     * @param propId  the ID of the asset property to fetch.
     * @param assetId the ID of the asset to fetch the property value for.
     * @return a {@link CompletableFuture} that represents a {@link Double} result. The calling code can attach
     *         callbacks, then handle the result or exception by calling {@link CompletableFuture#join()} or
     *         {@link CompletableFuture#get()}.
     *         <p>
     *         If any completion stage in this method throws an exception, the method logs the exception cause and keeps
     *         it available to the calling code as a {@link CompletionException}. By calling
     *         {@link CompletionException#getCause()}, the calling code can access the original exception.
     */
    public CompletableFuture<Double> getAssetPropValueAsync(String propId, String assetId) {
        GetAssetPropertyValueRequest assetPropertyValueRequest = GetAssetPropertyValueRequest.builder()
                .propertyId(propId)
                .assetId(assetId)
                .build();

        return getAsyncClient().getAssetPropertyValue(assetPropertyValueRequest)
                .handle((response, exception) -> {
                    if (exception != null) {
                        logger.error("Error occurred while fetching property value: {}.", exception.getCause().getMessage());
                        throw (CompletionException) exception;
                    }
                    return response.propertyValue().value().doubleValue();
                });
    }