public async Task InitiateSimulationAsync()
{
string logPrefix = "system".BuildLogPrefix();
try
{
//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(ModuleSettings.ConnectionString))
{
ModuleSettings.ConnectionString = await _provisioningService.AddModuleIdentityToDevice(ModuleSettings.ModuleId);
if (string.IsNullOrEmpty(ModuleSettings.ConnectionString))
{
_logger.LogWarning($"{logPrefix}::{ModuleSettings.ArtifactId}::No module connection string has been created.");
}
else
{
_logger.LogDebug($"{logPrefix}::{ModuleSettings.ArtifactId}::Module connection string being persisted.");
await ConfigurationHelpers.WriteModulesSettings(ModuleSettings, _environmentName);
}
}
IoTTools.CheckModuleConnectionStringData(ModuleSettings.ConnectionString, _logger);
// Connect to the IoT hub using the MQTT protocol
_moduleClient = ModuleClient.CreateFromConnectionString(ModuleSettings.ConnectionString, Microsoft.Azure.Devices.Client.TransportType.Mqtt);
_logger.LogDebug($"{logPrefix}::{ModuleSettings.ArtifactId}::Module client created.");
if (SimulationSettings.EnableTwinPropertiesDesiredChangesNotifications)
{
await _moduleClient.SetDesiredPropertyUpdateCallbackAsync(OnDesiredPropertyChange, null);
_logger.LogDebug($"{logPrefix}::{ModuleSettings.ArtifactId}::Twin Desired Properties update callback handler registered.");
}
//Configuration
if (SimulationSettings.EnableC2DDirectMethods)
{
//Register C2D Direct methods handlers
await RegisterC2DDirectMethodsHandlersAsync(_moduleClient, ModuleSettings, _logger);
}
if (SimulationSettings.EnableC2DMessages)
{
//Start receiving C2D messages
ReceiveC2DMessagesAsync(_moduleClient, ModuleSettings, _logger);
}
//Messages
if (SimulationSettings.EnableTelemetryMessages)
{
SendDeviceToCloudMessagesAsync(_moduleClient, ModuleSettings.DeviceId, ModuleSettings.ModuleId, _logger); //interval is a global variable changed by processes
}
if (SimulationSettings.EnableErrorMessages)
{
SendDeviceToCloudErrorAsync(_moduleClient, ModuleSettings.DeviceId, ModuleSettings.ModuleId, SimulationSettings.ErrorFrecuency, _logger);
}
if (SimulationSettings.EnableCommissioningMessages)
{
SendDeviceToCloudCommissioningAsync(_moduleClient, ModuleSettings.DeviceId, ModuleSettings.ModuleId, SimulationSettings.CommissioningFrecuency, _logger);
}
if (SimulationSettings.EnableReadingTwinProperties)
{
//Twins
_logger.LogDebug($"{logPrefix}::{ModuleSettings.ArtifactId}::INITIALIZATION::Retrieving twin.");
Twin twin = await _moduleClient.GetTwinAsync();
if (twin != null)
{
_logger.LogDebug($"{logPrefix}::{ModuleSettings.ArtifactId}::INITIALIZATION::Device twin: {JsonConvert.SerializeObject(twin, Formatting.Indented)}.");
}
else
{
_logger.LogDebug($"{logPrefix}::{ModuleSettings.ArtifactId}::INITIALIZATION::No device twin.");
}
}
_moduleClient.SetConnectionStatusChangesHandler(new ConnectionStatusChangesHandler(ConnectionStatusChanged));
}
catch (ConnectionStringException ex)
{
_logger.LogError($"{logPrefix}::{ModuleSettings.ArtifactId}::ConnectionStringException:{ex.Message}");
}
catch (Exception ex)
{
_logger.LogError($"{logPrefix}::{ModuleSettings.ArtifactId}::{ex.Message}");
}
}
