[Future Enhancement] Use ScopedValue to add the ability to retrieve the Request Context

[SentryMan]

I think it would be cool if we added ScopedValue to Context like this:

public interface Context {

  /** Retrieve the current request context */
  ScopedValue<Context> SV_CONTEXT = ScopedValue.newInstance();

}

In this way, every HTTP request can access the context like

  void main() {
    Jex.create().routing(routing -> routing.get("/", ctx -> processRequest())).start();
  }

  void processRequest() {
    Context ctx = Context.SV_CONTEXT.get();

    // do whatever with the context
  }

[rbygrave]

If we did it, we'd probably have a static method like:

  ScopedValue<Context> SV_CONTEXT = ScopedValue.newInstance();

  static Context get() {
    return SV_CONTEXT.get();
  }

So then its use would be:

  void processRequest() {
    Context ctx = Context.get();

    // do whatever with the context
  }