public async Task <IRequestHandlerResult> HandleRequestAsync()
{
// TODO: Optimize this by building up a hash of routes and workflows to execute.
var requestPath = new Uri(httpContext.Request.Path.ToString(), UriKind.Relative);
var method = httpContext.Request.Method;
var httpWorkflows = await registry.ListByStartActivityAsync(nameof(ReceiveHttpRequest), cancellationToken);
var workflowsToStart = Filter(httpWorkflows, requestPath, method).ToList();
var haltedHttpWorkflows = await workflowInstanceStore.ListByBlockingActivityAsync <ReceiveHttpRequest>(
cancellationToken : cancellationToken);
var workflowsToResume = Filter(haltedHttpWorkflows, requestPath, method).ToList();
if (!workflowsToStart.Any() && !workflowsToResume.Any())
{
return(new NextResult());
}
await InvokeWorkflowsToStartAsync(workflowsToStart);
await InvokeWorkflowsToResumeAsync(workflowsToResume);
return(!httpContext.Items.ContainsKey(WorkflowHttpResult.Instance)
? (IRequestHandlerResult) new AcceptedResult()
: new EmptyResult());
}
private async Task <IEnumerable <WorkflowExecutionContext> > StartManyAsync(
string activityType,
Variables input = default,
string correlationId = default,
Func <JObject, bool> activityStatePredicate = default,
CancellationToken cancellationToken = default)
{
var workflowDefinitions = await workflowRegistry.ListByStartActivityAsync(activityType, cancellationToken);
if (activityStatePredicate != null)
{
workflowDefinitions = workflowDefinitions.Where(x => activityStatePredicate(x.Item2.State));
}
workflowDefinitions = await FilterRunningSingletonsAsync(
workflowDefinitions,
cancellationToken
);
return(await StartManyAsync(workflowDefinitions, input, correlationId, cancellationToken));
}
