public async Task InitiateSimulationAsync()
{
string logPrefix = "system".BuildLogPrefix();
try
{
IoTTools.CheckDeviceConnectionStringData(_deviceSettings.ConnectionString, _logger);
// Connect to the IoT hub using the MQTT protocol
_deviceClient = DeviceClient.CreateFromConnectionString(_deviceSettings.ConnectionString, Microsoft.Azure.Devices.Client.TransportType.Mqtt);
_logger.LogDebug($"{logPrefix}::{_deviceSettings.ArtifactId}::Device client created.");
if (_simulationSettings.EnableTwinPropertiesDesiredChangesNotifications)
{
await _deviceClient.SetDesiredPropertyUpdateCallbackAsync(OnDesiredPropertyChange, null);
_logger.LogDebug($"{logPrefix}::{_deviceSettings.ArtifactId}::Twin Desired Properties update callback handler registered.");
}
//Configuration
if (_simulationSettings.EnableC2DDirectMethods)
{
//Register C2D Direct methods handlers
await RegisterC2DDirectMethodsHandlersAsync();
}
if (_simulationSettings.EnableC2DMessages)
{
//Start receiving C2D messages
ReceiveC2DMessagesAsync();
}
//Messages
if (_simulationSettings.EnableLatencyTests)
{
SendDeviceToCloudLatencyTestAsync(_deviceId, _simulationSettings.LatencyTestsFrecuency);
}
if (_simulationSettings.EnableTelemetryMessages)
{
SendDeviceToCloudMessagesAsync(_deviceId); //interval is a global variable changed by processes
}
if (_simulationSettings.EnableErrorMessages)
{
SendDeviceToCloudErrorAsync(_deviceId, _simulationSettings.ErrorFrecuency);
}
if (_simulationSettings.EnableCommissioningMessages)
{
SendDeviceToCloudCommissioningAsync(_deviceId, _simulationSettings.CommissioningFrecuency);
}
if (_simulationSettings.EnableReadingTwinProperties)
{
//Twins
_logger.LogDebug($"{logPrefix}::{_deviceSettings.ArtifactId}::INITIALIZATION::Retrieving twin.");
Twin twin = await _deviceClient.GetTwinAsync();
if (twin != null)
{
_logger.LogDebug($"{logPrefix}::{_deviceSettings.ArtifactId}::INITIALIZATION::Device twin: {JsonConvert.SerializeObject(twin, Formatting.Indented)}.");
}
else
{
_logger.LogDebug($"{logPrefix}::{_deviceSettings.ArtifactId}::INITIALIZATION::No device twin.");
}
}
if (_simulationSettings.EnableFileUpload)
{
throw new NotImplementedException("File upload feature has not been implemented yet.");
}
_deviceClient.SetConnectionStatusChangesHandler(new ConnectionStatusChangesHandler(ConnectionStatusChanged));
}
catch (Exception ex)
{
_logger.LogError($"{logPrefix}::{_deviceSettings.ArtifactId}::ERROR::InitiateSimulationAsync:{ex.Message}.");
}
}
public async Task InitiateSimulationAsync()
{
string logPrefix = "system".BuildLogPrefix();
//Connectivity tests
//Control if a connection string exists (ideally, stored in TPM/HSM or any secured location.
//If there is no connection string, check if the DPS settings are provided.
//If so, provision the device and persist the connection string for upcoming boots.
if (string.IsNullOrEmpty(_deviceSettingsDelegate.CurrentValue.ConnectionString))
{
string connectionString = await _provisioningService.ProvisionDevice();
if (!string.IsNullOrEmpty(connectionString))
{
_deviceSettingsDelegate.CurrentValue.ConnectionString = connectionString;
}
else
{
throw new Exception($"{logPrefix}::{_deviceSettingsDelegate.CurrentValue.ArtifactId}::An issue occured during the provisioning process or the connetion string building process.");
}
_logger.LogWarning($"{logPrefix}::{_deviceSettingsDelegate.CurrentValue.ArtifactId}::Device connection string being persisted.");
await ConfigurationHelpers.WriteDeviceSettings(_deviceSettingsDelegate.CurrentValue, _environmentName);
}
//At this stage, the connection string should be set properly and the device client should be able to communicate with the IoT Hub with no issues.
try
{
IoTTools.CheckDeviceConnectionStringData(_deviceSettingsDelegate.CurrentValue.ConnectionString, _logger);
// Connect to the IoT hub using the MQTT protocol
if (_dpsSettings.GroupEnrollment != null)
{
if (_dpsSettings.GroupEnrollment.SecurityType == SecurityType.SymmetricKey)
{
_deviceClient = DeviceClient.CreateFromConnectionString(
_deviceSettingsDelegate.CurrentValue.ConnectionString,
_dpsSettings.GroupEnrollment.SymmetricKeySettings.TransportType);
}
else if (_dpsSettings.GroupEnrollment.SecurityType == SecurityType.X509CA)
{
string deviceCertificateFullPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, _dpsSettings.GroupEnrollment.CAX509Settings.DeviceX509Path);
X509Certificate2 deviceLeafProvisioningCertificate = new X509Certificate2(deviceCertificateFullPath, _dpsSettings.GroupEnrollment.CAX509Settings.Password);
IAuthenticationMethod auth = new DeviceAuthenticationWithX509Certificate(_deviceSettingsDelegate.CurrentValue.DeviceId, deviceLeafProvisioningCertificate);
_deviceClient = DeviceClient.Create(_deviceSettingsDelegate.CurrentValue.HostName, auth, _dpsSettings.GroupEnrollment.CAX509Settings.TransportType);
}
else
{
_logger.LogError($"{logPrefix}::{_deviceSettingsDelegate.CurrentValue.ArtifactId}::Feature not implemented.");
}
_logger.LogDebug($"{logPrefix}::{_deviceSettingsDelegate.CurrentValue.ArtifactId}::Device client created.");
if (_simulationSettings.EnableTwinPropertiesDesiredChangesNotifications)
{
await _deviceClient.SetDesiredPropertyUpdateCallbackAsync(OnDesiredPropertyChange, null);
_logger.LogDebug($"{logPrefix}::{_deviceSettingsDelegate.CurrentValue.ArtifactId}::Twin Desired Properties update callback handler registered.");
}
//Configuration
if (_simulationSettings.EnableC2DDirectMethods)
{
//Register C2D Direct methods handlers
await RegisterC2DDirectMethodsHandlersAsync();
}
if (_simulationSettings.EnableC2DMessages)
{
//Start receiving C2D messages
ReceiveC2DMessagesAsync();
}
//Messages
if (_simulationSettings.EnableLatencyTests)
{
SendDeviceToCloudLatencyTestAsync(_deviceSettingsDelegate.CurrentValue.DeviceId, _simulationSettings.LatencyTestsFrecuency);
}
if (_simulationSettings.EnableTelemetryMessages)
{
SendDeviceToCloudMessagesAsync(_deviceSettingsDelegate.CurrentValue.DeviceId); //interval is a global variable changed by processes
}
if (_simulationSettings.EnableErrorMessages)
{
SendDeviceToCloudErrorAsync(_deviceSettingsDelegate.CurrentValue.DeviceId, _simulationSettings.ErrorFrecuency);
}
if (_simulationSettings.EnableCommissioningMessages)
{
SendDeviceToCloudCommissioningAsync(_deviceSettingsDelegate.CurrentValue.DeviceId, _simulationSettings.CommissioningFrecuency);
}
if (_simulationSettings.EnableReadingTwinProperties)
{
//Twins
_logger.LogDebug($"{logPrefix}::{_deviceSettingsDelegate.CurrentValue.ArtifactId}::INITIALIZATION::Retrieving twin.");
Twin twin = await _deviceClient.GetTwinAsync();
if (twin != null)
{
_logger.LogDebug($"{logPrefix}::{_deviceSettingsDelegate.CurrentValue.ArtifactId}::INITIALIZATION::Device twin: {JsonConvert.SerializeObject(twin, Formatting.Indented)}.");
}
else
{
_logger.LogDebug($"{logPrefix}::{_deviceSettingsDelegate.CurrentValue.ArtifactId}::INITIALIZATION::No device twin.");
}
}
if (_simulationSettings.EnableFileUpload)
{
throw new NotImplementedException("File upload feature has not been implemented yet.");
}
_deviceClient.SetConnectionStatusChangesHandler(new ConnectionStatusChangesHandler(ConnectionStatusChanged));
}
else
{
_logger.LogWarning($"{logPrefix}::{_deviceSettingsDelegate.CurrentValue.ArtifactId}::No enrollment group has been found.");
}
}
catch (Exception ex)
{
_logger.LogError($"{logPrefix}::{_deviceSettingsDelegate.CurrentValue.ArtifactId}::ERROR::InitiateSimulationAsync:{ex.Message}.");
}
}