public virtual async Task Invoke(HttpContext httpContext)
{
var deepestDepth = 0;
IPipeline pipeline = null;
if (_pipelineCollectionAccessor.Pipelines?.Any() == true)
{
foreach (var p in _pipelineCollectionAccessor.Pipelines)
{
if (await p.ResolveAsync(httpContext))
{
var depth = _decisionTree.GetPipelinePath(p).Count;
if (depth > deepestDepth)
{
pipeline = p;
deepestDepth = depth;
}
}
}
}
if (pipeline != null)
{
httpContext.Items[_options.Value.PipelineHttpContextItemKey] = pipeline;
_logger.LogInformation(InformationEventId, $"Resolved pipeline: {pipeline.Name}");
var requestDelegate = _pipelines.GetOrAdd(pipeline,
new Lazy <RequestDelegate>(() =>
{
var builder = _app.New();
Task.WaitAll(pipeline.ConfigurePipeline(builder));
builder.Run(_next);
return(builder.Build());
}));
await requestDelegate.Value(httpContext);
}
else
{
if (_defaultRequestDelegate == null && _defaultPipelineConfiguration != null)
{
var builder = _app.New();
_defaultPipelineConfiguration(builder);
builder.Run(_next);
_defaultRequestDelegate = builder.Build();
}
await(_defaultRequestDelegate ?? _next)(httpContext);
}
}
