HTTP server API changes for improved extensibility (#684)

* refactored `HttpServer` so all subclass member functions are proctected, to make it easier to extend base functionality
* added API service, can be used to enumerate registered endpoints (at `/api`). Currently only very basic information is provided

1 files changed, 43 insertions, 0 deletions

diff --git a/src/zenhttp/httpserver.cpp b/src/zenhttp/httpserver.cpp
index 1357f1b9b..e529fb76e 100644
--- a/src/zenhttp/httpserver.cpp
+++ b/src/zenhttp/httpserver.cpp
@@ -990,6 +990,49 @@ HttpRequestRouter::HandleRequest(zen::HttpServerRequest& Request)
 
 //////////////////////////////////////////////////////////////////////////
 
+int
+HttpServer::Initialize(int BasePort, std::filesystem::path DataDir)
+{
+	return OnInitialize(BasePort, std::move(DataDir));
+}
+
+void
+HttpServer::Run(bool IsInteractiveSession)
+{
+	OnRun(IsInteractiveSession);
+}
+
+void
+HttpServer::RequestExit()
+{
+	OnRequestExit();
+}
+void
+HttpServer::Close()
+{
+	OnClose();
+}
+
+void
+HttpServer::RegisterService(HttpService& Service)
+{
+	OnRegisterService(Service);
+	m_KnownServices.push_back(&Service);
+}
+
+void
+HttpServer::EnumerateServices(std::function<void(HttpService& Service)>&& Callback)
+{
+	// This doesn't take a lock because services should only be registered during
+	// server initialization, before it starts accepting requests
+	for (HttpService* Service : m_KnownServices)
+	{
+		Callback(*Service);
+	}
+}
+
+//////////////////////////////////////////////////////////////////////////
+
 HttpRpcHandler::HttpRpcHandler()
 {
 }