Request Syntax URI Request Parameters Request Body Response Syntax Response Elements Errors See Also

GetAssetPropertyValue

Gets an asset property's current value. For more information, see Querying current values in the AWS IoT SiteWise User Guide.

To identify an asset property, you must specify one of the following:

The assetId and propertyId of an asset property.
A propertyAlias, which is a data stream alias (for example, /company/windfarm/3/turbine/7/temperature). To define an asset property's alias, see UpdateAssetProperty.

Request Syntax


GET /properties/latest?assetId=assetId&propertyAlias=propertyAlias&propertyId=propertyId HTTP/1.1

URI Request Parameters

The request uses the following URI parameters.

assetId

The ID of the asset, in UUID format.

Length Constraints: Fixed length of 36.

Pattern: ^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$

propertyAlias

The alias that identifies the property, such as an OPC-UA server data stream path (for example, /company/windfarm/3/turbine/7/temperature). For more information, see Mapping industrial data streams to asset properties in the AWS IoT SiteWise User Guide.

Length Constraints: Minimum length of 1. Maximum length of 1000.

Pattern: [^\u0000-\u001F\u007F]+

propertyId

The ID of the asset property, in UUID format.

Length Constraints: Fixed length of 36.

Pattern: ^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$

Request Body

The request does not have a request body.

Response Syntax


HTTP/1.1 200
Content-type: application/json

{
   "propertyValue": { 
      "quality": "string",
      "timestamp": { 
         "offsetInNanos": number,
         "timeInSeconds": number
      },
      "value": { 
         "booleanValue": boolean,
         "doubleValue": number,
         "integerValue": number,
         "stringValue": "string"
      }
   }
}

Response Elements

If the action is successful, the service sends back an HTTP 200 response.

The following data is returned in JSON format by the service.

propertyValue

The current asset property value.

Type: AssetPropertyValue object

Errors

For information about the errors that are common to all actions, see Common Errors.

InternalFailureException

AWS IoT SiteWise can't process your request right now. Try again later.

HTTP Status Code: 500

InvalidRequestException

The request isn't valid. This can occur if your request contains malformed JSON or unsupported characters. Check your request and try again.

HTTP Status Code: 400

ResourceNotFoundException

The requested resource can't be found.

HTTP Status Code: 404

ServiceUnavailableException

The requested service is unavailable.

HTTP Status Code: 503

ThrottlingException

Your request exceeded a rate limit. For example, you might have exceeded the number of AWS IoT SiteWise assets that can be created per second, the allowed number of messages per second, and so on.

For more information, see Quotas in the AWS IoT SiteWise User Guide.

HTTP Status Code: 429