private async Task UpdateDigitalTwinComponentPropertyAsync()
{
// Choose a random value to assign to the targetTemperature property in thermostat1 component
int desiredTargetTemperature = Random.Next(0, 100);
const string targetTemperaturePropertyName = "targetTemperature";
var updateOperation = new UpdateOperationsUtility();
// First let's take a look at when the property was updated and what was it set to.
HttpOperationResponse <TemperatureControllerTwin, DigitalTwinGetHeaders> getDigitalTwinResponse = await _digitalTwinClient
.GetDigitalTwinAsync <TemperatureControllerTwin>(_digitalTwinId);
ThermostatTwin thermostat1 = getDigitalTwinResponse.Body.Thermostat1;
if (thermostat1 != null)
{
// Thermostat1 is present in the TemperatureController twin. We can add/replace the component-level property "targetTemperature"
double?currentComponentTargetTemperature = getDigitalTwinResponse.Body.Thermostat1.TargetTemperature;
if (currentComponentTargetTemperature != null)
{
DateTimeOffset targetTemperatureDesiredLastUpdateTime = getDigitalTwinResponse.Body.Thermostat1.Metadata.TargetTemperature.LastUpdateTime;
_logger.LogDebug($"The property {targetTemperaturePropertyName} under component {Thermostat1Component} was last updated on `" +
$"{targetTemperatureDesiredLastUpdateTime.ToLocalTime()} `" +
$" with a value of {getDigitalTwinResponse.Body.Thermostat1.Metadata.TargetTemperature.DesiredValue}.");
// The property path to be replaced should be prepended with a '/'
updateOperation.AppendReplacePropertyOp($"/{Thermostat1Component}/{targetTemperaturePropertyName}", desiredTargetTemperature);
}
else
{
_logger.LogDebug($"The property {targetTemperaturePropertyName} under component {Thermostat1Component} `" +
$"was never set on the {_digitalTwinId} digital twin.");
// The property path to be added should be prepended with a '/'
updateOperation.AppendAddPropertyOp($"/{Thermostat1Component}/{targetTemperaturePropertyName}", desiredTargetTemperature);
}
}
else
{
// Thermostat1 is not present in the TemperatureController twin. We will add the component
var componentProperty = new Dictionary <string, object> {
{ targetTemperaturePropertyName, desiredTargetTemperature }, { "$metadata", new object() }
};
_logger.LogDebug($"The component {Thermostat1Component} does not exist on the {_digitalTwinId} digital twin.");
// The property path to be replaced should be prepended with a '/'
updateOperation.AppendAddComponentOp($"/{Thermostat1Component}", componentProperty);
}
_logger.LogDebug($"Update the {targetTemperaturePropertyName} property under component {Thermostat1Component} on the {_digitalTwinId} `" +
$"digital twin to {desiredTargetTemperature}.");
HttpOperationHeaderResponse <DigitalTwinUpdateHeaders> updateDigitalTwinResponse = await _digitalTwinClient
.UpdateDigitalTwinAsync(_digitalTwinId, updateOperation.Serialize());
_logger.LogDebug($"Update {_digitalTwinId} digital twin response: {updateDigitalTwinResponse.Response.StatusCode}.");
// Print the TemperatureController digital twin
await GetAndPrintDigitalTwinAsync <TemperatureControllerTwin>();
}
private async Task UpdateTargetTemperaturePropertyAsync()
{
const string targetTemperaturePropertyName = "targetTemperature";
var updateOperation = new UpdateOperationsUtility();
// Choose a random value to assign to the targetTemperature property
int desiredTargetTemperature = Random.Next(0, 100);
// First let's take a look at when the property was updated and what was it set to.
HttpOperationResponse <ThermostatTwin, DigitalTwinGetHeaders> getDigitalTwinResponse = await _digitalTwinClient
.GetDigitalTwinAsync <ThermostatTwin>(_digitalTwinId);
double?currentTargetTemperature = getDigitalTwinResponse.Body.TargetTemperature;
if (currentTargetTemperature != null)
{
DateTimeOffset targetTemperatureDesiredLastUpdateTime = getDigitalTwinResponse.Body.Metadata.TargetTemperature.LastUpdateTime;
_logger.LogDebug($"The property {targetTemperaturePropertyName} was last updated on " +
$"{targetTemperatureDesiredLastUpdateTime.ToLocalTime()} `" +
$" with a value of {getDigitalTwinResponse.Body.Metadata.TargetTemperature.DesiredValue}.");
// The property path to be replaced should be prepended with a '/'
updateOperation.AppendReplacePropertyOp($"/{targetTemperaturePropertyName}", desiredTargetTemperature);
}
else
{
_logger.LogDebug($"The property {targetTemperaturePropertyName} was never set on the ${_digitalTwinId} digital twin.");
// The property path to be added should be prepended with a '/'
updateOperation.AppendAddPropertyOp($"/{targetTemperaturePropertyName}", desiredTargetTemperature);
}
_logger.LogDebug($"Update the {targetTemperaturePropertyName} property on the " +
$"{_digitalTwinId} digital twin to {desiredTargetTemperature}.");
HttpOperationHeaderResponse <DigitalTwinUpdateHeaders> updateDigitalTwinResponse = await _digitalTwinClient
.UpdateDigitalTwinAsync(_digitalTwinId, updateOperation.Serialize());
_logger.LogDebug($"Update {_digitalTwinId} digital twin response: {updateDigitalTwinResponse.Response.StatusCode}.");
// Print the Thermostat digital twin
await GetAndPrintDigitalTwinAsync <ThermostatTwin>();
}
