public override async Task OpenAsync(CancellationToken cancellationToken)
{
if (Logging.IsEnabled)
{
Logging.Enter(this, cancellationToken, $"{nameof(OpenAsync)}");
}
try
{
cancellationToken.ThrowIfCancellationRequested();
await _amqpUnit.OpenAsync(_operationTimeout).ConfigureAwait(false);
}
catch (Exception exception) when(!exception.IsFatal() && !(exception is OperationCanceledException))
{
Exception newException = AmqpClientHelper.ToIotHubClientContract(exception);
if (newException != exception)
{
throw newException;
}
else
{
// Maintain the original stack.
throw;
}
}
finally
{
if (Logging.IsEnabled)
{
Logging.Exit(this, cancellationToken, $"{nameof(OpenAsync)}");
}
}
}
public override async Task SendTwinPatchAsync(TwinCollection reportedProperties, CancellationToken cancellationToken)
{
if (Logging.IsEnabled)
{
Logging.Enter(this, reportedProperties, cancellationToken, $"{nameof(SendTwinPatchAsync)}");
}
try
{
await EnableTwinPatchAsync(cancellationToken).ConfigureAwait(false);
var body = JsonConvert.SerializeObject(reportedProperties);
var bodyStream = new MemoryStream(System.Text.Encoding.UTF8.GetBytes(body));
var amqpMessage = AmqpMessage.Create(bodyStream, true);
amqpMessage.MessageAnnotations.Map["operation"] = "PATCH";
amqpMessage.MessageAnnotations.Map["resource"] = "/properties/reported";
amqpMessage.MessageAnnotations.Map["version"] = null;
var response = await RoundTripTwinMessage(amqpMessage, cancellationToken).ConfigureAwait(false);
VerifyResponseMessage(response);
}
catch (Exception exception) when(!exception.IsFatal() && !(exception is OperationCanceledException))
{
throw AmqpClientHelper.ToIotHubClientContract(exception);
}
finally
{
if (Logging.IsEnabled)
{
Logging.Exit(this, reportedProperties, cancellationToken, $"{nameof(SendTwinPatchAsync)}");
}
}
}
public override async Task <Twin> SendTwinGetAsync(CancellationToken cancellationToken)
{
if (Logging.IsEnabled)
{
Logging.Enter(this, cancellationToken, $"{nameof(SendTwinGetAsync)}");
}
try
{
await EnableTwinPatchAsync(cancellationToken).ConfigureAwait(false);
AmqpMessage amqpMessage = AmqpMessage.Create();
amqpMessage.MessageAnnotations.Map["operation"] = "GET";
var response = await RoundTripTwinMessage(amqpMessage, cancellationToken).ConfigureAwait(false);
return(TwinFromResponse(response));
}
catch (Exception exception) when(!exception.IsFatal() && !(exception is OperationCanceledException))
{
throw AmqpClientHelper.ToIotHubClientContract(exception);
}
finally
{
if (Logging.IsEnabled)
{
Logging.Exit(this, cancellationToken, $"{nameof(SendTwinGetAsync)}");
}
}
}
public override async Task EnableTwinPatchAsync(CancellationToken cancellationToken)
{
if (Logging.IsEnabled)
{
Logging.Enter(this, cancellationToken, $"{nameof(EnableTwinPatchAsync)}");
}
try
{
cancellationToken.ThrowIfCancellationRequested();
await _amqpUnit.EnsureTwinLinksAreOpenedAsync(_operationTimeout).ConfigureAwait(false);
}
catch (Exception exception) when(!exception.IsFatal() && !(exception is OperationCanceledException))
{
throw AmqpClientHelper.ToIotHubClientContract(exception);
}
finally
{
if (Logging.IsEnabled)
{
Logging.Exit(this, cancellationToken, $"{nameof(EnableTwinPatchAsync)}");
}
}
}
public override async Task <Message> ReceiveAsync(TimeSpan timeout, CancellationToken cancellationToken)
{
if (Logging.IsEnabled)
{
Logging.Enter(this, timeout, cancellationToken, $"{nameof(ReceiveAsync)}");
}
Message message = null;
while (true)
{
cancellationToken.ThrowIfCancellationRequested();
try
{
message = await _amqpUnit.ReceiveMessageAsync(timeout).ConfigureAwait(false);
if (message != null)
{
break;
}
}
catch (Exception exception) when(!exception.IsFatal() && !(exception is OperationCanceledException))
{
throw AmqpClientHelper.ToIotHubClientContract(exception);
}
}
if (Logging.IsEnabled)
{
Logging.Exit(this, timeout, cancellationToken, $"{nameof(ReceiveAsync)}");
}
return(message);
}
private async Task DisposeMessageAsync(string lockToken, Outcome outcome, CancellationToken cancellationToken)
{
Outcome disposeOutcome;
try
{
// Currently, the same mechanism is used for sending feedback for C2D messages and events received by modules.
// However, devices only support C2D messages (they cannot receive events), and modules only support receiving events
// (they cannot receive C2D messages). So we use this to distinguish whether to dispose the message (i.e. send outcome on)
// the DeviceBoundReceivingLink or the EventsReceivingLink.
// If this changes (i.e. modules are able to receive C2D messages, or devices are able to receive telemetry), this logic
// will have to be updated.
disposeOutcome = await _amqpUnit.DisposeMessageAsync(lockToken, outcome, _operationTimeout).ConfigureAwait(false);
}
catch (Exception exception) when(!exception.IsFatal() && !(exception is OperationCanceledException))
{
throw AmqpClientHelper.ToIotHubClientContract(exception);
}
if (disposeOutcome.DescriptorCode != Accepted.Code)
{
if (disposeOutcome.DescriptorCode == Rejected.Code)
{
var rejected = (Rejected)disposeOutcome;
// Special treatment for NotFound amqp rejected error code in case of DisposeMessage
if (rejected.Error != null && rejected.Error.Condition.Equals(AmqpErrorCode.NotFound))
{
Error error = new Error
{
Condition = IotHubAmqpErrorCode.MessageLockLostError
};
throw AmqpErrorMapper.ToIotHubClientContract(error);
}
}
throw AmqpErrorMapper.GetExceptionFromOutcome(disposeOutcome);
}
}