async Task DequeueLoop(string partitionId, ControlQueue controlQueue, CancellationToken cancellationToken)
{
this.settings.Logger.PartitionManagerInfo(
this.storageAccountName,
this.settings.TaskHubName,
this.settings.WorkerId,
partitionId,
$"Started listening for messages on queue {controlQueue.Name}.");
while (!controlQueue.IsReleased)
{
try
{
// Every dequeue operation has a common trace ID so that batches of dequeued messages can be correlated together.
// Both the dequeue traces and the processing traces will share the same "related" trace activity ID.
Guid traceActivityId = AzureStorageOrchestrationService.StartNewLogicalTraceScope(useExisting: false);
// This will block until either new messages arrive or the queue is released.
IReadOnlyList <MessageData> messages = await controlQueue.GetMessagesAsync(cancellationToken);
if (messages.Count > 0)
{
// De-dupe any execution started messages
IEnumerable <MessageData> filteredMessages = await this.DedupeExecutionStartedMessagesAsync(
controlQueue,
messages,
traceActivityId,
cancellationToken);
this.AddMessageToPendingOrchestration(controlQueue, filteredMessages, traceActivityId, cancellationToken);
}
}
catch (OperationCanceledException) when(cancellationToken.IsCancellationRequested)
{
// shutting down
break;
}
catch (Exception e)
{
this.settings.Logger.PartitionManagerWarning(
this.storageAccountName,
this.settings.TaskHubName,
this.settings.WorkerId,
partitionId,
$"Exception in the dequeue loop for control queue {controlQueue.Name}. Exception: {e}");
Thread.Sleep(TimeSpan.FromSeconds(1));
}
}
this.settings.Logger.PartitionManagerInfo(
this.storageAccountName,
this.settings.TaskHubName,
this.settings.WorkerId,
partitionId,
$"Stopped listening for messages on queue {controlQueue.Name}.");
}
async Task DequeueLoop(string partitionId, ControlQueue controlQueue, CancellationToken cancellationToken)
{
this.settings.Logger.PartitionManagerInfo(
this.storageAccountName,
this.settings.TaskHubName,
this.settings.WorkerId,
partitionId,
$"Started listening for messages on queue {controlQueue.Name}.");
try
{
while (!controlQueue.IsReleased)
{
// Every dequeue operation has a common trace ID so that batches of dequeued messages can be correlated together.
// Both the dequeue traces and the processing traces will share the same "related" trace activity ID.
Guid traceActivityId = AzureStorageOrchestrationService.StartNewLogicalTraceScope(useExisting: false);
// This will block until either new messages arrive or the queue is released.
IReadOnlyList <MessageData> messages = await controlQueue.GetMessagesAsync(cancellationToken);
// De-dupe any execution started messages
messages = this.FilterOutExecutionStartedForDedupeValidation(controlQueue, messages, traceActivityId, cancellationToken);
if (messages.Count > 0)
{
this.AddMessageToPendingOrchestration(controlQueue, messages, traceActivityId, cancellationToken);
}
}
}
finally
{
this.settings.Logger.PartitionManagerInfo(
this.storageAccountName,
this.settings.TaskHubName,
this.settings.WorkerId,
partitionId,
$"Stopped listening for messages on queue {controlQueue.Name}.");
}
}
async void DequeueLoop(string partitionId, ControlQueue controlQueue, CancellationToken cancellationToken)
{
AnalyticsEventSource.Log.PartitionManagerInfo(
this.storageAccountName,
this.settings.TaskHubName,
this.settings.WorkerId,
partitionId,
$"Started listening for messages on queue {controlQueue.Name}.",
Utils.ExtensionVersion);
try
{
while (!controlQueue.IsReleased)
{
// Every dequeue operation has a common trace ID so that batches of dequeued messages can be correlated together.
// Both the dequeue traces and the processing traces will share the same "related" trace activity ID.
Guid traceActivityId = AzureStorageOrchestrationService.StartNewLogicalTraceScope();
// This will block until either new messages arrive or the queue is released.
IReadOnlyList <MessageData> messages = await controlQueue.GetMessagesAsync(cancellationToken);
if (messages.Count > 0)
{
this.AddMessageToPendingOrchestration(controlQueue, messages, traceActivityId, cancellationToken);
}
}
}
finally
{
AnalyticsEventSource.Log.PartitionManagerInfo(
this.storageAccountName,
this.settings.TaskHubName,
this.settings.WorkerId,
partitionId,
$"Stopped listening for messages on queue {controlQueue.Name}.",
Utils.ExtensionVersion);
}
}