/// <summary>
/// Tries to parse the <see cref="Message.GetBytes"/> to a json representation of <see cref="LoRaCloudToDeviceMessage"/>.
/// </summary>
private void ParseMessage()
{
var bytes = this.message.GetBytes();
if (bytes?.Length > 0)
{
var json = Encoding.UTF8.GetString(bytes);
try
{
this.parseCloudToDeviceMessage = JsonConvert.DeserializeObject <ReceivedLoRaCloudToDeviceMessage>(json);
}
catch (Exception ex) when(ex is JsonReaderException or JsonSerializationException)
{
this.invalidErrorMessage = $"could not parse cloud to device message: {json}: {ex.Message}";
}
}
else
{
this.invalidErrorMessage = "cloud message does not have a body";
}
}
async Task <DecodePayloadResult> CallSensorDecoderModule(string devEUI, string sensorDecoderModuleUrl)
{
try
{
var httpClientToUse = this.httpClient ?? this.decodersHttpClient.Value;
HttpResponseMessage response = await httpClientToUse.GetAsync(sensorDecoderModuleUrl);
if (!response.IsSuccessStatusCode)
{
var badReqResult = await response.Content.ReadAsStringAsync();
return(new DecodePayloadResult()
{
Error = $"SensorDecoderModule '{sensorDecoderModuleUrl}' returned bad request.",
ErrorDetail = badReqResult ?? string.Empty,
});
}
else
{
var externalRawResponse = await response.Content.ReadAsStringAsync();
if (!string.IsNullOrEmpty(externalRawResponse))
{
try
{
ReceivedLoRaCloudToDeviceMessage loRaCloudToDeviceMessage = null;
var externalDecoderResponse = JsonConvert.DeserializeObject <Dictionary <string, object> >(externalRawResponse);
if (externalDecoderResponse.TryGetValue(Constants.CLOUD_TO_DEVICE_DECODER_ELEMENT_NAME, out var cloudToDeviceObject))
{
if (cloudToDeviceObject is JObject jsonObject)
{
loRaCloudToDeviceMessage = jsonObject.ToObject <ReceivedLoRaCloudToDeviceMessage>();
}
externalDecoderResponse.Remove(Constants.CLOUD_TO_DEVICE_DECODER_ELEMENT_NAME);
}
return(new DecodePayloadResult(externalDecoderResponse)
{
CloudToDeviceMessage = loRaCloudToDeviceMessage
});
}
catch (JsonReaderException)
{
// not a json object, use as string
return(new DecodePayloadResult(externalRawResponse));
}
}
else
{
// not a json object, use as string
return(new DecodePayloadResult(externalRawResponse));
}
}
}
catch (Exception ex)
{
Logger.Log(devEUI, $"error in decoder handling: {ex.Message}", LogLevel.Error);
return(new DecodePayloadResult()
{
Error = $"Call to SensorDecoderModule '{sensorDecoderModuleUrl}' failed.",
ErrorDetail = ex.Message,
});
}
}