public async Task <OpenApiResult> HandleTrigger(string tenantId, string workflowInstanceId, IWorkflowTrigger body)
{
ITenant tenant = await this.marainServicesTenancy.GetRequestingTenantAsync(tenantId).ConfigureAwait(false);
IWorkflowEngine workflowEngine = await this.workflowEngineFactory.GetWorkflowEngineAsync(tenant).ConfigureAwait(false);
await workflowEngine.ProcessTriggerAsync(body, workflowInstanceId).ConfigureAwait(false);
return(this.OkResult());
}
/// <summary>
/// The Process method is invoked asynchronously when <see cref="StartProcessing" /> is
/// called. It will run on a background thread until <see cref="FinishProcessing" />
/// is called.
/// </summary>
/// <returns>
/// A <see cref="Task" /> that will complete after <see cref="FinishProcessing" /> is called.
/// </returns>
private async Task Process()
{
while (true)
{
if (this.queue.IsEmpty)
{
if (this.shouldComplete)
{
break;
}
await Task.Delay(TimeSpan.FromSeconds(1)).ConfigureAwait(false);
continue;
}
this.queue.TryPeek(out WorkflowMessageEnvelope item);
IWorkflowInstanceStore instanceStore =
await this.workflowInstanceStoreFactory.GetWorkflowInstanceStoreForTenantAsync(this.tenantProvider.Root).ConfigureAwait(false);
IWorkflowEngine engine =
await this.workflowEngineFactory.GetWorkflowEngineAsync(this.tenantProvider.Root).ConfigureAwait(false);
if (item.IsTrigger)
{
this.logger.LogInformation("Processing trigger with content type {ContentType}", item.ContentType);
IWorkflowTrigger trigger = item.Trigger;
IEnumerable <string> instanceIds = await instanceStore.GetMatchingWorkflowInstanceIdsForSubjectsAsync(
item.Trigger.GetSubjects(),
int.MaxValue,
0).ConfigureAwait(false);
foreach (string current in instanceIds)
{
await engine.ProcessTriggerAsync(trigger, current).ConfigureAwait(false);
}
}
else
{
this.logger.LogInformation("Processing start workflow instance request");
await engine.StartWorkflowInstanceAsync(item.StartWorkflowInstanceRequest)
.ConfigureAwait(false);
}
this.queue.TryDequeue(out _);
}
}