public async Task RunOrchestrator(
[OrchestrationTrigger] IDurableOrchestrationContext orchestrationContext,
ILogger log)
{
ILogger replaySafeLogger = orchestrationContext.CreateReplaySafeLogger(log);
WorkflowMessageEnvelope envelope =
orchestrationContext.GetInputWithCustomSerializationSettings <WorkflowMessageEnvelope>(
this.serializerSettingsProvider.Instance);
try
{
await orchestrationContext.CallActivityAsync(
nameof(StartLongRunningOperationActivity),
(envelope.OperationId, envelope.TenantId));
if (envelope.IsStartWorkflowRequest)
{
replaySafeLogger.LogDebug(
$"Received new start workflow request with Id {envelope.StartWorkflowInstanceRequest.RequestId} for workflow {envelope.StartWorkflowInstanceRequest.WorkflowId}");
await orchestrationContext.CallActivityWithCustomSerializationSettingsAsync(
nameof(CreateWorkflowActivity),
envelope,
this.serializerSettingsProvider.Instance);
}
else
{
replaySafeLogger.LogDebug($"Received new workflow trigger with Id {envelope.Trigger.Id}");
int count = await orchestrationContext.CallActivityWithCustomSerializationSettingsAsync <WorkflowMessageEnvelope, int>(
nameof(GetWorkflowInstanceCountActivity),
envelope,
this.serializerSettingsProvider.Instance);
int pages = (int)Math.Ceiling((decimal)count / 500);
replaySafeLogger.LogDebug($"Found {count} instances that match. Split into {pages} pages for fan-out.");
var tasks = new Task[pages];
for (int i = 0; i < pages; i++)
{
envelope.SetWorkflowInstancesPageNumber(this.propertyBagFactory, i);
tasks[i] = orchestrationContext.CallSubOrchestratorWithCustomSerializationSettingsAsync(
nameof(TriggerInstancesExecutionOrchestrator),
envelope,
this.serializerSettingsProvider.Instance);
}
await Task.WhenAll(tasks);
replaySafeLogger.LogDebug("All sub-orchestrations complete");
}
await orchestrationContext.CallActivityAsync(
nameof(CompleteLongRunningOperationActivity),
(envelope.OperationId, envelope.TenantId));
}
catch (FunctionFailedException x)
{
replaySafeLogger.LogError($"Error during orchestration: {x}");
await orchestrationContext.CallActivityAsync(
nameof(FailLongRunningOperationActivity),
(envelope.OperationId, envelope.TenantId));
throw;
}
}
