// initialize following fields async
// _triggerExecutor --> register messageHandler
// _sharedQueuelistener --> dequeue messages and call messageHandler
// _sharedQueueWriter --> enqueue messages
internal async Task InitializeAsync(CancellationToken cancellationToken)
{
if (_state != State.Created)
{
// only initialized once, since _state is incremental
throw new InvalidOperationException(ErrorMessage(State.Created, _state));
}
// concurrent dictionary that we can register messageHandler
_triggerExecutor = new SharedQueueExecutor();
try
{
string hostId = await _hostIdProvider.GetHostIdAsync(cancellationToken);
// one host level shared queue
// queue is not created here, only after 1st message added
var sharedQueue = HostQueueNames.GetHostSharedQueueName(hostId);
// default host level poison queue
var sharedPoisonQueue = HostQueueNames.GetHostSharedPoisonQueueName(hostId);
// queueWatcher will update queueListener's polling interval when queueWriter performes an enqueue operation
_sharedQueueWriter = _queueFactory.GetQueueWriter <QueueMessage>(sharedQueue);
_sharedQueuelistener = _queueFactory.CreateQueueListenr(sharedQueue, sharedPoisonQueue, _triggerExecutor.ExecuteAsync);
}
catch (Exception ex)
{
// initialization exception will fail all registrations
_initializationEx = ex;
}
_state = State.Initialized;
}
// initialize following fields async
// _triggerExecutor --> register messageHandler
// _sharedQueuelistener --> dequeue messages and call messageHandler
// _sharedQueueWriter --> enqueue messages
internal async Task InitializeAsync(CancellationToken cancellationToken)
{
if (_state != State.Created)
{
// only initialized once, since _state is incremental
throw new InvalidOperationException(ErrorMessage(State.Created, _state));
}
// concurrent dictionary that we can register messageHandler
_triggerExecutor = new SharedQueueExecutor();
try
{
IStorageQueueClient primaryQueueClient = (await _accountProvider.GetStorageAccountAsync(cancellationToken)).CreateQueueClient();
string hostId = await _hostIdProvider.GetHostIdAsync(cancellationToken);
// one host level shared queue
// queue is not created here, only after 1st message added
IStorageQueue sharedQueue = primaryQueueClient.GetQueueReference(HostQueueNames.GetHostSharedQueueName(hostId));
// default host level poison queue
IStorageQueue sharedPoisonQueue = primaryQueueClient.GetQueueReference(HostQueueNames.GetHostSharedPoisonQueueName(hostId));
// queueWatcher will update queueListener's polling interval when queueWriter performes an enqueue operation
SharedQueueWatcher sharedQueueWatcher = _sharedContextProvider.GetOrCreateInstance <SharedQueueWatcher>(
new SharedQueueWatcherFactory(_messageEnqueuedWatcherSetter));
_sharedQueueWriter = new SharedQueueWriter(sharedQueue, sharedQueueWatcher);
// use default poisonQueue setup
_sharedQueuelistener = new QueueListener(sharedQueue, sharedPoisonQueue, _triggerExecutor,
_exceptionHandler, _loggerFactory, sharedQueueWatcher, _queueConfiguration);
}
catch (Exception ex)
{
// initialization exception will fail all registrations
_initializationEx = ex;
}
_state = State.Initialized;
}