public async Task <IActionResult> FunctionBundler(
[HttpTrigger(AuthorizationLevel.Function, "post", Route = "FunctionBundler/{devEUI}")] HttpRequest req,
ILogger logger,
string devEUI)
{
try
{
VersionValidator.Validate(req);
}
catch (IncompatibleVersionException ex)
{
return(new BadRequestObjectResult(ex.Message));
}
if (!DevEui.TryParse(devEUI, EuiParseOptions.ForbidInvalid, out var parsedDevEui))
{
return(new BadRequestObjectResult("Dev EUI is invalid."));
}
var requestBody = await req.ReadAsStringAsync();
if (string.IsNullOrEmpty(requestBody))
{
return(new BadRequestObjectResult("missing body"));
}
var functionBundlerRequest = JsonConvert.DeserializeObject <FunctionBundlerRequest>(requestBody);
var result = await HandleFunctionBundlerInvoke(parsedDevEui, functionBundlerRequest, logger);
return(new OkObjectResult(result));
}
private async Task <IActionResult> RunGetDeviceByDevEUI(HttpRequest req, ILogger log)
{
string devEui = req.Query["DevEUI"];
if (!DevEui.TryParse(devEui, out var parsedDevEui))
{
return(new BadRequestObjectResult("DevEUI missing or invalid."));
}
var device = await this.registryManager.GetDeviceAsync(parsedDevEui.ToString());
if (device != null)
{
log.LogDebug($"Search for {devEui} found 1 device");
return(new OkObjectResult(new
{
DevEUI = devEui,
device.Authentication.SymmetricKey.PrimaryKey
}));
}
else
{
log.LogInformation($"Search for {devEui} found 0 devices");
return(new NotFoundResult());
}
}
public async Task <IActionResult> Run(
[HttpTrigger(AuthorizationLevel.Function, "post", Route = "cloudtodevicemessage/{devEUI}")] HttpRequest req,
string devEUI)
{
DevEui parsedDevEui;
try
{
VersionValidator.Validate(req);
if (!DevEui.TryParse(devEUI, EuiParseOptions.ForbidInvalid, out parsedDevEui))
{
return(new BadRequestObjectResult("Dev EUI is invalid."));
}
}
catch (IncompatibleVersionException ex)
{
return(new BadRequestObjectResult(ex.Message));
}
catch (ArgumentException ex)
{
return(new BadRequestObjectResult(ex.Message));
}
var requestBody = await req.ReadAsStringAsync();
if (string.IsNullOrEmpty(requestBody))
{
return(new BadRequestObjectResult("missing body"));
}
var c2dMessage = JsonConvert.DeserializeObject <LoRaCloudToDeviceMessage>(requestBody);
c2dMessage.DevEUI = parsedDevEui;
return(await SendCloudToDeviceMessageImplementationAsync(parsedDevEui, c2dMessage));
}
public async Task <IActionResult> GetDevice(
[HttpTrigger(AuthorizationLevel.Function, "get", "post", Route = null)] HttpRequest req,
ILogger log)
{
if (req is null)
{
throw new ArgumentNullException(nameof(req));
}
try
{
VersionValidator.Validate(req);
}
catch (IncompatibleVersionException ex)
{
return(new BadRequestObjectResult(ex.Message));
}
// ABP parameters
string devAddrString = req.Query["DevAddr"];
// OTAA parameters
string rawDevEui = req.Query["DevEUI"];
string rawDevNonce = req.Query["DevNonce"];
var gatewayId = req.Query["GatewayId"];
DevEui?devEui = null;
if (!string.IsNullOrEmpty(rawDevEui))
{
if (DevEui.TryParse(rawDevEui, EuiParseOptions.ForbidInvalid, out var parsedDevEui))
{
devEui = parsedDevEui;
}
else
{
return(new BadRequestObjectResult("Dev EUI is invalid."));
}
}
try
{
DevNonce?devNonce = ushort.TryParse(rawDevNonce, NumberStyles.None, CultureInfo.InvariantCulture, out var d) ? new DevNonce(d) : null;
DevAddr? devAddr = DevAddr.TryParse(devAddrString, out var someDevAddr) ? someDevAddr : null;
var results = await GetDeviceList(devEui, gatewayId, devNonce, devAddr, log);
var json = JsonConvert.SerializeObject(results);
return(new OkObjectResult(json));
}
catch (DeviceNonceUsedException)
{
return(new BadRequestObjectResult("UsedDevNonce"));
}
catch (JoinRefusedException ex)
{
log.LogDebug("Join refused: {msg}", ex.Message);
return(new BadRequestObjectResult("JoinRefused: " + ex.Message));
}
catch (ArgumentException ex)
{
return(new BadRequestObjectResult(ex.Message));
}
}
public async Task <IActionResult> NextFCntDownInvoke(
[HttpTrigger(AuthorizationLevel.Function, "get", "post", Route = null)] HttpRequest req,
ILogger log)
{
if (req is null)
{
throw new ArgumentNullException(nameof(req));
}
try
{
VersionValidator.Validate(req);
}
catch (IncompatibleVersionException ex)
{
return(new BadRequestObjectResult(ex.Message));
}
string rawDevEui = req.Query["DevEUI"];
var fCntDown = req.Query["FCntDown"];
var fCntUp = req.Query["FCntUp"];
var gatewayId = req.Query["GatewayId"];
var abpFcntCacheReset = req.Query["ABPFcntCacheReset"];
if (!DevEui.TryParse(rawDevEui, EuiParseOptions.ForbidInvalid, out var devEui))
{
return(new BadRequestObjectResult("Dev EUI is invalid."));
}
if (!uint.TryParse(fCntUp, out var clientFCntUp))
{
throw new ArgumentException("Missing FCntUp");
}
if (abpFcntCacheReset != StringValues.Empty)
{
using (var deviceCache = new LoRaDeviceCache(this.deviceCache, devEui, gatewayId))
{
if (await deviceCache.TryToLockAsync())
{
if (deviceCache.TryGetInfo(out var deviceInfo))
{
// only reset the cache if the current value is larger
// than 1 otherwise we likely reset it from another device
// and continued processing
if (deviceInfo.FCntUp > 1)
{
log.LogDebug("Resetting cache for device {devEUI}. FCntUp: {fcntup}", devEui, deviceInfo.FCntUp);
deviceCache.ClearCache();
}
}
}
}
return(new OkObjectResult(null));
}
// validate input parameters
if (!uint.TryParse(fCntDown, out var clientFCntDown) ||
StringValues.IsNullOrEmpty(gatewayId))
{
var errorMsg = "Missing FCntDown or GatewayId";
throw new ArgumentException(errorMsg);
}
var newFCntDown = await GetNextFCntDownAsync(devEui, gatewayId, clientFCntUp, clientFCntDown);
return(new OkObjectResult(newFCntDown));
}
