static void Main(string[] args)
{
// The Edge runtime gives us the connection string we need -- it is injected as an environment variable
string connectionString = Environment.GetEnvironmentVariable("EdgeHubConnectionString");
// Cert verification is not yet fully functional when using Windows OS for the container
bool bypassCertVerification = RuntimeInformation.IsOSPlatform(OSPlatform.Windows);
if (!bypassCertVerification)
{
InstallCert();
}
IoTEdgeModuleState state = null;
try
{
state = Init(connectionString, bypassCertVerification).GetAwaiter().GetResult();
}
catch (Exception ex)
{
Console.WriteLine($"[{DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss")}] Error in the initialization\n{ex.ToString()}");
Environment.ExitCode = 1;
return;
}
var outputName = Environment.GetEnvironmentVariable("OutputName");
if (string.IsNullOrEmpty(outputName))
{
outputName = "sensor";
}
;
using (sensorReader = new SensorReader(state, outputName))
{
sensorReader.StartReading();
// Wait until the app unloads or is cancelled
var cts = new CancellationTokenSource();
AssemblyLoadContext.Default.Unloading += (ctx) => cts.Cancel();
Console.CancelKeyPress += (sender, cpe) => cts.Cancel();
WhenCancelled(cts.Token).Wait();
}
}
/// <summary>
/// Initializes the DeviceClient and sets up the callback to receive
/// messages containing temperature information
/// </summary>
static async Task <IoTEdgeModuleState> Init(string connectionString, bool bypassCertVerification = false)
{
Console.WriteLine($"[{DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss")}] Connection String {connectionString}");
var state = new IoTEdgeModuleState()
{
ConnectionString = connectionString,
BypassCertVerification = bypassCertVerification,
};
// open connection to edge
var ioTHubModuleClient = await state.CreateAndOpenClient();
if (ioTHubModuleClient == null)
{
Console.WriteLine($"[{DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss")}] Could not connect to {state.ConnectionString}. Aborting");
}
Console.WriteLine($"[{DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss")}] IoT Hub module client initialized.");
await ioTHubModuleClient.SetMethodHandlerAsync("bme280status", HandleStatusMethod, null);
return(state);
}
public SensorReader(IoTEdgeModuleState state, string outputName)
{
this.state = state;
this.outputName = outputName;
}