private async Task VerifyPublishPacketTopicAsync(IChannelHandlerContext context, string topicName, string jsonData)
{
Match match = s_registrationStatusTopicRegex.Match(topicName);
if (match.Groups.Count >= 2)
{
if (Enum.TryParse(match.Groups[1].Value, out HttpStatusCode statusCode))
{
if (statusCode >= HttpStatusCode.BadRequest)
{
var errorDetails = JsonConvert.DeserializeObject <ProvisioningErrorDetailsMqtt>(jsonData);
bool isTransient = statusCode >= HttpStatusCode.InternalServerError || (int)statusCode == 429;
if (isTransient)
{
errorDetails.RetryAfter = ProvisioningErrorDetailsMqtt.GetRetryAfterFromTopic(topicName, s_defaultOperationPoolingInterval);
}
await FailWithExceptionAsync(
context,
new ProvisioningTransportException(
jsonData,
null,
isTransient,
errorDetails)).ConfigureAwait(false);
}
}
}
}
private async Task ProcessRegistrationStatusAsync(IChannelHandlerContext context, PublishPacket packet)
{
string operationId = null;
try // TODO : extract generic method for exception handling.
{
await PubAckAsync(context, packet.PacketId).ConfigureAwait(true);
string jsonData = Encoding.UTF8.GetString(
packet.Payload.GetIoBuffer().Array,
packet.Payload.GetIoBuffer().Offset,
packet.Payload.GetIoBuffer().Count);
await VerifyPublishPacketTopicAsync(context, packet.TopicName, jsonData).ConfigureAwait(true);
//"{\"operationId\":\"0.indcertdevice1.e50c0fa7-8b9b-4b3d-8374-02d71377886f\",\"status\":\"assigning\"}"
var operation = JsonConvert.DeserializeObject <RegistrationOperationStatus>(jsonData);
operationId = operation.OperationId;
operation.RetryAfter = ProvisioningErrorDetailsMqtt.GetRetryAfterFromTopic(packet.TopicName, s_defaultOperationPoolingInterval);
if (string.CompareOrdinal(operation.Status, RegistrationOperationStatus.OperationStatusAssigning) == 0 ||
string.CompareOrdinal(operation.Status, RegistrationOperationStatus.OperationStatusUnassigned) == 0)
{
await Task.Delay(operation.RetryAfter ?? RetryJitter.GenerateDelayWithJitterForRetry(s_defaultOperationPoolingInterval)).ConfigureAwait(true);
ChangeState(State.WaitForStatus, State.WaitForPubAck);
await PublishGetOperationAsync(context, operationId).ConfigureAwait(true);
}
else
{
ChangeState(State.WaitForStatus, State.Done);
_taskCompletionSource.TrySetResult(operation);
await this.DoneAsync(context).ConfigureAwait(true);
}
}
catch (ProvisioningTransportException te)
{
await FailWithExceptionAsync(context, te).ConfigureAwait(true);
}
catch (Exception ex)
{
var wrapperEx = new ProvisioningTransportException(
$"{ExceptionPrefix} Error while processing RegistrationStatus.",
ex,
false);
await FailWithExceptionAsync(context, wrapperEx).ConfigureAwait(true);
}
}