public static async Task <bool> CreateExternalDeviceActivity([ActivityTrigger] CreateExternalDeviceInput externalDevice, TraceWriter log)
{
var externalDeviceRegistry = Utils.ResolveExternalDeviceRegistry();
try
{
await externalDeviceRegistry.CreateExternalDevice(externalDevice.DeviceId, externalDevice.Properties);
log.Info($"Device {externalDevice.DeviceId} created");
Utils.TelemetryClient?.TrackEvent(Utils.Event_ExternalDeviceCreated, new Dictionary <string, string>(externalDevice.Properties)
{
{ "deviceId", externalDevice.DeviceId },
{ "iothubname", externalDevice.IotHubName }
});
return(true);
}
catch (Exception ex)
{
Utils.TelemetryClient?.TrackEvent(Utils.Event_ExternalDeviceCreationError, new Dictionary <string, string>(externalDevice.Properties)
{
{ "deviceId", externalDevice.DeviceId },
{ "iothubname", externalDevice.IotHubName },
{ "error", ex.Message },
});
throw;
}
}
public static async Task ExternalRegistrySynchronizer_CreateDeviceOrchestration(
[OrchestrationTrigger] DurableOrchestrationContext context, TraceWriter log)
{
var input = context.GetInput <DeviceCreateOrchestrationInput>();
if (!context.IsReplaying)
{
log.Info($"{nameof(ExternalRegistrySynchronizer_CreateDeviceOrchestration)} started for {input.DeviceId} / {input.IoTHubName}. {nameof(Settings.Instance.TwinCheckIntervalInSeconds)}: {Settings.Instance.TwinCheckIntervalInSeconds} secs, {nameof(Settings.Instance.TwinCheckMaxRetryCount)}: {Settings.Instance.TwinCheckMaxRetryCount}, {nameof(Settings.Instance.TwinCheckMaxIntervalInSeconds)}: {Settings.Instance.TwinCheckMaxIntervalInSeconds} secs, {nameof(Settings.Instance.TwinCheckRetryTimeoutInMinutes)}: {Settings.Instance.TwinCheckRetryTimeoutInMinutes} minutes");
}
// 1. If it is the start wait a bit until the device twin was updated
VerifyDeviceTwinResult deviceTwinCheckResult = null;
try
{
deviceTwinCheckResult = await context.CallActivityWithRetryAsync <VerifyDeviceTwinResult>(nameof(VerifyDeviceTwinActivity),
new RetryOptions(TimeSpan.FromSeconds(Settings.Instance.TwinCheckIntervalInSeconds), Settings.Instance.TwinCheckMaxRetryCount)
{
BackoffCoefficient = 2, // backoff coefficient ^2
MaxRetryInterval = TimeSpan.FromSeconds(Settings.Instance.TwinCheckMaxIntervalInSeconds), // will wait for a new retry up to x seconds
RetryTimeout = TimeSpan.FromMinutes(Settings.Instance.TwinCheckRetryTimeoutInMinutes) // will try up to x minutes
},
input);
}
catch (FunctionFailedException)
{
// no more retries for the device twin properties to exist, log a customEvent
Utils.TelemetryClient?.TrackEvent(Utils.Event_DeviceTwinCheckFailed, new Dictionary <string, string>()
{
{ "deviceId", input.DeviceId },
{ "iothubname", input.IoTHubName }
});
}
var createExternalDeviceSucceeded = false;
if (deviceTwinCheckResult != null)
{
// Will only reach here once it succeededs (required properties were found)
var createExternalDeviceInput = new CreateExternalDeviceInput
{
DeviceId = input.DeviceId,
IotHubName = input.IoTHubName,
Properties = deviceTwinCheckResult.Properties,
};
try
{
createExternalDeviceSucceeded = await context.CallActivityWithRetryAsync <bool>(nameof(CreateExternalDeviceActivity),
new RetryOptions(TimeSpan.FromSeconds(Settings.Instance.ExternalSystemCallRetryIntervalInSeconds), Settings.Instance.ExternalSystemCallMaxRetryCount)
{
BackoffCoefficient = 2, // backoff coefficient ^2
MaxRetryInterval = TimeSpan.FromSeconds(Settings.Instance.ExternalSystemCallMaxIntervalInSeconds), // will wait for a new retry up to x seconds
RetryTimeout = TimeSpan.FromMinutes(Settings.Instance.ExternalSystemCallRetryTimeoutInMinutes) // will try up to x minutes
},
createExternalDeviceInput);
}
catch (FunctionFailedException)
{
// no more retries for the device twin properties to exist, log a customEvent
Utils.TelemetryClient?.TrackEvent(Utils.Event_ExternalDeviceCreationFailed, new Dictionary <string, string>()
{
{ "deviceId", input.DeviceId },
{ "iothubname", input.IoTHubName }
});
createExternalDeviceSucceeded = false;
}
}
log.Info($"{nameof(ExternalRegistrySynchronizer_CreateDeviceOrchestration)} finished for {input.DeviceId} / {input.IoTHubName}. Succeeded: {createExternalDeviceSucceeded.ToString()}");
}
