/// <summary>
/// Starts the partition pump. In case it's already running, nothing happens.
/// </summary>
///
/// <returns>A task to be resolved on when the operation has completed.</returns>
///
public async Task StartAsync()
{
if (RunningTask == null)
{
await RunningTaskSemaphore.WaitAsync().ConfigureAwait(false);
try
{
if (RunningTask == null)
{
// We expect the token source to be null, but we are playing safe.
RunningTaskTokenSource?.Cancel();
RunningTaskTokenSource = new CancellationTokenSource();
InnerConsumer = InnerClient.CreateConsumer(ConsumerGroup, Context.PartitionId, Options.InitialEventPosition);
// In case an exception is encountered while partition processor is initializing, don't catch it
// and let the event processor handle it. The inner consumer hasn't connected to the service yet,
// so there's no need to close it.
await PartitionProcessor.InitializeAsync(Context).ConfigureAwait(false);
// Before closing, the running task will set the close reason in case of failure. When something
// unexpected happens and it's not set, the default value (Unknown) is kept.
RunningTask = RunAsync(RunningTaskTokenSource.Token);
}
}
finally
{
RunningTaskSemaphore.Release();
}
}
}
/// <summary>
/// Starts the partition pump. In case it's already running, nothing happens.
/// </summary>
///
/// <returns>A task to be resolved on when the operation has completed.</returns>
///
public async Task StartAsync()
{
if (RunningTask == null)
{
await RunningTaskSemaphore.WaitAsync().ConfigureAwait(false);
try
{
if (RunningTask == null)
{
RunningTaskTokenSource?.Cancel();
RunningTaskTokenSource = new CancellationTokenSource();
InnerConsumer = InnerClient.CreateConsumer(ConsumerGroup, PartitionId, Options.InitialEventPosition);
await PartitionProcessor.InitializeAsync().ConfigureAwait(false);
RunningTask = RunAsync(RunningTaskTokenSource.Token);
}
}
finally
{
RunningTaskSemaphore.Release();
}
}
}
