public async Task EnableMethodsAsync(TimeSpan timeout)
{
if (Logging.IsEnabled)
{
Logging.Enter(this, timeout, $"{nameof(EnableMethodsAsync)}");
}
try
{
Debug.Assert(_methodSendingLink == null);
Debug.Assert(_methodReceivingLink == null);
string correlationIdSuffix = Guid.NewGuid().ToString();
Task <AmqpIoTReceivingLink> receiveLinkCreator = _amqpIoTSession.OpenMethodsReceiverLinkAsync(_deviceIdentity, correlationIdSuffix, timeout);
Task <AmqpIoTSendingLink> sendingLinkCreator = _amqpIoTSession.OpenMethodsSenderLinkAsync(_deviceIdentity, correlationIdSuffix, timeout);
await Task.WhenAll(receiveLinkCreator, sendingLinkCreator).ConfigureAwait(false);
_methodReceivingLink = receiveLinkCreator.Result;
_methodSendingLink = sendingLinkCreator.Result;
_methodReceivingLink.RegisterMethodListener(OnMethodReceived);
_methodSendingLink.Closed += OnLinkDisconnected;
_methodReceivingLink.Closed += OnLinkDisconnected;
if (Logging.IsEnabled)
{
Logging.Associate(this, _methodReceivingLink, $"{nameof(_methodReceivingLink)}");
}
if (Logging.IsEnabled)
{
Logging.Associate(this, _methodSendingLink, $"{nameof(_methodSendingLink)}");
}
}
catch (Exception)
{
_methodReceivingLink?.Abort();
_methodReceivingLink = null;
_methodSendingLink?.Abort();
_methodSendingLink = null;
throw;
}
finally
{
if (Logging.IsEnabled)
{
Logging.Exit(this, timeout, $"{nameof(EnableMethodsAsync)}");
}
}
}
private async Task OpenTwinSenderLinkAsync(AmqpIoTSession amqpIoTSession, string correlationIdSuffix, TimeSpan timeout)
{
if (_twinSendingLink == null || _twinSendingLink.IsClosing())
{
_twinSendingLink = await amqpIoTSession.OpenTwinSenderLinkAsync(_deviceIdentity, correlationIdSuffix, timeout).ConfigureAwait(false);
_twinSendingLink.Closed += (obj, arg) => {
amqpIoTSession.SafeClose();
};
if (Logging.IsEnabled)
{
Logging.Associate(this, _twinSendingLink, $"{nameof(_twinSendingLink)}");
}
}
}
private async Task OpenMethodsSenderLinkAsync(AmqpIoTSession amqpIoTSession, string correlationIdSuffix, TimeSpan timeout)
{
if (_methodSendingLink == null || _methodSendingLink.IsClosing())
{
_methodSendingLink?.SafeClose();
_methodSendingLink = await amqpIoTSession.OpenMethodsSenderLinkAsync(_deviceIdentity, correlationIdSuffix, timeout).ConfigureAwait(false);
_methodSendingLink.Closed += (obj, arg) =>
{
amqpIoTSession.SafeClose();
};
Logging.Associate(this, _methodSendingLink, nameof(_methodSendingLink));
}
}
public async Task DisableTwinLinksAsync(TimeSpan timeout)
{
Logging.Enter(this, timeout, nameof(DisableTwinLinksAsync));
Debug.Assert(_twinSendingLink != null);
Debug.Assert(_twinReceivingLink != null);
bool enteredSemaphore = await _twinLinksSemaphore.WaitAsync(timeout).ConfigureAwait(false);
if (!enteredSemaphore)
{
throw new TimeoutException("Failed to enter the semaphore required for ensuring that AMQP twin sender and receiver links are closed.");
}
try
{
ICollection <Task> tasks = new List <Task>();
if (_twinReceivingLink != null)
{
tasks.Add(_twinReceivingLink.CloseAsync(timeout));
}
if (_twinSendingLink != null)
{
tasks.Add(_twinSendingLink.CloseAsync(timeout));
}
if (tasks.Count > 0)
{
await Task.WhenAll(tasks).ConfigureAwait(false);
_twinReceivingLink = null;
_twinSendingLink = null;
}
}
finally
{
Logging.Exit(this, timeout, nameof(DisableTwinLinksAsync));
_twinLinksSemaphore.Release();
}
}
public async Task DisableMethodsAsync(TimeSpan timeout)
{
if (Logging.IsEnabled)
{
Logging.Enter(this, timeout, $"{nameof(DisableMethodsAsync)}");
}
Debug.Assert(_methodSendingLink != null);
Debug.Assert(_methodReceivingLink != null);
try
{
ICollection <Task> tasks = new List <Task>();
if (_methodReceivingLink != null)
{
tasks.Add(_methodReceivingLink.CloseAsync(timeout));
}
if (_methodSendingLink != null)
{
tasks.Add(_methodSendingLink.CloseAsync(timeout));
}
if (tasks.Count > 0)
{
await Task.WhenAll(tasks).ConfigureAwait(false);
_methodReceivingLink = null;
_methodSendingLink = null;
}
}
finally
{
if (Logging.IsEnabled)
{
Logging.Exit(this, timeout, $"{nameof(DisableMethodsAsync)}");
}
}
}
internal async Task <AmqpIoTSession> EnsureSessionAsync(TimeSpan timeout)
{
if (_closed)
{
throw new IotHubException("Device is now offline.", false);
}
if (Logging.IsEnabled)
{
Logging.Enter(this, timeout, $"{nameof(EnsureSessionAsync)}");
}
bool gain = await _sessionLock.WaitAsync(timeout).ConfigureAwait(false);
if (!gain)
{
throw new TimeoutException();
}
try
{
if (_amqpIoTSession == null || _amqpIoTSession.IsClosing())
{
_amqpIoTSession = await _amqpConnectionHolder.OpenSessionAsync(_deviceIdentity, timeout).ConfigureAwait(false);
if (Logging.IsEnabled)
{
Logging.Associate(this, _amqpIoTSession, $"{nameof(_amqpIoTSession)}");
}
if (_deviceIdentity.AuthenticationModel == AuthenticationModel.SasIndividual)
{
_amqpAuthenticationRefresher = await _amqpConnectionHolder.CreateRefresherAsync(_deviceIdentity, timeout).ConfigureAwait(false);
if (Logging.IsEnabled)
{
Logging.Associate(this, _amqpAuthenticationRefresher, $"{nameof(_amqpAuthenticationRefresher)}");
}
}
_amqpIoTSession.Closed += OnSessionDisconnected;
_messageSendingLink = await _amqpIoTSession.OpenTelemetrySenderLinkAsync(_deviceIdentity, timeout).ConfigureAwait(false);
_messageSendingLink.Closed += (obj, arg) => {
_amqpIoTSession.SafeClose();
};
if (Logging.IsEnabled)
{
Logging.Associate(this, _messageSendingLink, $"{nameof(_messageSendingLink)}");
}
}
if (_disposed)
{
_amqpAuthenticationRefresher?.StopLoop();
_amqpIoTSession.SafeClose();
if (!_deviceIdentity.IsPooling())
{
_amqpConnectionHolder.Dispose();
}
throw new IotHubException("Device is now offline.", false);
}
}
finally
{
_sessionLock.Release();
}
if (Logging.IsEnabled)
{
Logging.Exit(this, timeout, $"{nameof(EnsureSessionAsync)}");
}
return(_amqpIoTSession);
}
public async Task OpenAsync(TimeSpan timeout)
{
if (Logging.IsEnabled)
{
Logging.Enter(this, timeout, $"{nameof(OpenAsync)}");
}
try
{
Debug.Assert(_amqpIoTSession == null);
Debug.Assert(IsUsable());
_amqpIoTSession = await _amqpSessionCreator.CreateSession(
_deviceIdentity,
timeout).ConfigureAwait(false);
if (Logging.IsEnabled)
{
Logging.Associate(this, _amqpIoTSession, $"{nameof(_amqpIoTSession)}");
}
await _amqpIoTSession.OpenAsync(timeout).ConfigureAwait(false);
if (_deviceIdentity.AuthenticationModel == AuthenticationModel.SasIndividual)
{
_amqpAuthenticationRefresher = await _amqpAuthenticationRefresherCreator.CreateRefresher(_deviceIdentity, timeout).ConfigureAwait(false);
if (Logging.IsEnabled)
{
Logging.Associate(this, _amqpAuthenticationRefresher, $"{nameof(_amqpAuthenticationRefresher)}");
}
}
_amqpIoTSession.Closed += OnSessionDisconnected;
_messageSendingLink = await _amqpIoTSession.OpenTelemetrySenderLinkAsync(
_deviceIdentity,
timeout).ConfigureAwait(false);
_messageSendingLink.Closed += OnLinkDisconnected;
if (Logging.IsEnabled)
{
Logging.Associate(this, _messageSendingLink, $"{nameof(_messageSendingLink)}");
}
}
catch (Exception ex) when(!ex.IsFatal())
{
if (SetNotUsable() == 0)
{
OnUnitDisconnected?.Invoke(false, EventArgs.Empty);
}
throw;
}
finally
{
if (Logging.IsEnabled)
{
Logging.Exit(this, timeout, $"{nameof(OpenAsync)}");
}
}
}
public async Task EnsureTwinLinksAreOpenedAsync(TimeSpan timeout)
{
if (Volatile.Read(ref _twinLinksOpened) == true)
{
return;
}
if (Logging.IsEnabled)
{
Logging.Enter(this, timeout, $"{nameof(EnsureTwinLinksAreOpenedAsync)}");
}
try
{
await _twinLinksLock.WaitAsync().ConfigureAwait(false);
if (_twinLinksOpened)
{
return;
}
Debug.Assert(_twinSendingLink == null);
Debug.Assert(_twinReceivingLink == null);
string correlationIdSuffix = Guid.NewGuid().ToString();
Task <AmqpIoTReceivingLink> receiveLinkCreator = _amqpIoTSession.OpenTwinReceiverLinkAsync(_deviceIdentity, correlationIdSuffix, timeout);
Task <AmqpIoTSendingLink> sendingLinkCreator = _amqpIoTSession.OpenTwinSenderLinkAsync(_deviceIdentity, correlationIdSuffix, timeout);
await Task.WhenAll(receiveLinkCreator, sendingLinkCreator).ConfigureAwait(false);
_twinSendingLink = sendingLinkCreator.Result;
_twinSendingLink.Closed += OnLinkDisconnected;
_twinReceivingLink = receiveLinkCreator.Result;
_twinReceivingLink.RegisterTwinListener(OnDesiredPropertyReceived);
_twinReceivingLink.Closed += OnLinkDisconnected;
_twinLinksOpened = true;
if (Logging.IsEnabled)
{
Logging.Associate(this, this, _twinReceivingLink, $"{nameof(EnsureTwinLinksAreOpenedAsync)}");
}
if (Logging.IsEnabled)
{
Logging.Associate(this, this, _twinSendingLink, $"{nameof(EnsureTwinLinksAreOpenedAsync)}");
}
}
catch (Exception ex) when(!ex.IsFatal())
{
_twinReceivingLink?.Abort();
_twinSendingLink?.Abort();
_twinReceivingLink = null;
_twinSendingLink = null;
throw;
}
finally
{
_twinLinksLock.Release();
if (Logging.IsEnabled)
{
Logging.Exit(this, timeout, $"{nameof(EnsureTwinLinksAreOpenedAsync)}");
}
}
}
internal async Task <AmqpIoTSession> EnsureSessionIsOpenAsync(TimeSpan timeout)
{
if (_closed)
{
throw new IotHubException("Device is now offline.", false);
}
Logging.Enter(this, timeout, nameof(EnsureSessionIsOpenAsync));
bool enteredSemaphore = await _sessionSemaphore.WaitAsync(timeout).ConfigureAwait(false);
if (!enteredSemaphore)
{
throw new TimeoutException("Failed to enter the semaphore required for opening an AMQP session.");
}
try
{
if (_amqpIoTSession == null || _amqpIoTSession.IsClosing())
{
_amqpIoTSession?.SafeClose();
_amqpIoTSession = await _amqpConnectionHolder.OpenSessionAsync(_deviceIdentity, timeout).ConfigureAwait(false);
Logging.Associate(this, _amqpIoTSession, nameof(_amqpIoTSession));
if (_deviceIdentity.AuthenticationModel == AuthenticationModel.SasIndividual)
{
_amqpAuthenticationRefresher = await _amqpConnectionHolder.CreateRefresherAsync(_deviceIdentity, timeout).ConfigureAwait(false);
Logging.Associate(this, _amqpAuthenticationRefresher, nameof(_amqpAuthenticationRefresher));
}
_amqpIoTSession.Closed += OnSessionDisconnected;
_messageSendingLink = await _amqpIoTSession.OpenTelemetrySenderLinkAsync(_deviceIdentity, timeout).ConfigureAwait(false);
_messageSendingLink.Closed += (obj, arg) =>
{
_amqpIoTSession.SafeClose();
};
Logging.Associate(this, _messageSendingLink, nameof(_messageSendingLink));
}
if (_disposed)
{
throw new IotHubException("Device is now offline.", false);
}
}
catch (Exception)
{
Cleanup();
throw;
}
finally
{
_sessionSemaphore.Release();
}
Logging.Exit(this, timeout, nameof(EnsureSessionIsOpenAsync));
return(_amqpIoTSession);
}