[ aws . iotsitewise ]

get-asset-property-value

Description

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 .

See also: AWS API Documentation

See ‘aws help’ for descriptions of global parameters.

Synopsis

  get-asset-property-value
[--asset-id <value>]
[--property-id <value>]
[--property-alias <value>]
[--cli-input-json | --cli-input-yaml]
[--generate-cli-skeleton <value>]

Options

--asset-id (string)

The ID of the asset.

--property-id (string)

The ID of the asset property.

--property-alias (string)

The property 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 .

--cli-input-json | --cli-input-yaml (string) Reads arguments from the JSON string provided. The JSON string follows the format provided by --generate-cli-skeleton. If other arguments are provided on the command line, those values will override the JSON-provided values. It is not possible to pass arbitrary binary values using a JSON-provided value as the string will be taken literally. This may not be specified along with --cli-input-yaml.

--generate-cli-skeleton (string) Prints a JSON skeleton to standard output without sending an API request. If provided with no value or the value input, prints a sample input JSON that can be used as an argument for --cli-input-json. Similarly, if provided yaml-input it will print a sample input YAML that can be used with --cli-input-yaml. If provided with the value output, it validates the command inputs and returns a sample output JSON for that command.

See ‘aws help’ for descriptions of global parameters.

Examples

To retrieve an asset property’s current value

The following get-asset-property-value example retrieves a wind turbine asset’s current total power.

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"
    }
}

For more information, see Querying current asset property values in the AWS IoT SiteWise User Guide.

Output

propertyValue -> (structure)

The current asset property value.

value -> (structure)

The value of the asset property (see Variant ).

stringValue -> (string)

Asset property data of type string (sequence of characters).

integerValue -> (integer)

Asset property data of type integer (whole number).

doubleValue -> (double)

Asset property data of type double (floating point number).

booleanValue -> (boolean)

Asset property data of type Boolean (true or false).

timestamp -> (structure)

The timestamp of the asset property value.

timeInSeconds -> (long)

The timestamp date, in seconds, in the Unix epoch format. Fractional nanosecond data is provided by offsetInNanos .

offsetInNanos -> (integer)

The nanosecond offset from timeInSeconds .

quality -> (string)

The quality of the asset property value.