public async Task Invoke(IDictionary <string, object> environment)
{
var sw = new Stopwatch();
var req = new RazorRequest(environment);
ITrace trace = Tracer.ForRequest(req);
using (trace.StartTrace())
{
trace.WriteLine("Received {0} {1}", req.Method, req.Path);
if (!IsUnder(VirtualRoot, req.Path))
{
// Not for us!
await NextApp(environment);
return;
}
// Step 1. Route the request to a file
RouteResult routed = await Router.Route(req, trace);
if (!routed.Success)
{
// Also not for us!
await NextApp(environment);
return;
}
trace.WriteLine("Router: '{0}' ==> '{1}'::'{2}'", req.Path, routed.File.Name, routed.PathInfo);
// Step 2. Use the compilation manager to get the file's compiled type
sw.Start();
CompilationResult compiled = await CompilationManager.Compile(routed.File, trace);
sw.Stop();
if (!compiled.Success)
{
trace.WriteLine("Compiler: '{0}' FAILED", routed.File.Name);
throw new CompilationFailedException(compiled.Messages, compiled.GeneratedCode);
}
if (compiled.SatisfiedFromCache)
{
trace.WriteLine("Retrieved compiled code from cache in {0}ms", sw.ElapsedMilliseconds);
}
else
{
trace.WriteLine("Compiled '{0}' in {1}ms", routed.File.Name, sw.ElapsedMilliseconds);
}
sw.Reset();
// Step 3. Construct an instance using the PageActivator
Type type = compiled.GetCompiledType();
ActivationResult activated = Activator.ActivatePage(type, trace);
if (!activated.Success)
{
trace.WriteLine("Activator: '{0}' FAILED", type.FullName);
throw new ActivationFailedException(type);
}
trace.WriteLine("Activator: '{0}' SUCCESS", type.FullName);
// Step 4. Execute the activated instance!
await Executor.Execute(activated.Page, environment, trace);
}
}