builds url discovery (#334)

- Feature: Added `--host` option to use Jupiters list of cloud host and zen servers to resolve best hosts
- Feature: Use local zenserver as builds cache if it has the `builds` service enabled and `--cloud-discovery-host` is provided and no remote zenserver cache hosts can be found
- Improvement: Added `--override-host` option as a replacement for `--url` (`--url` still works, but `--override-host` is preferred)

1 files changed, 13 insertions, 2 deletions

diff --git a/src/zenserver/vfs/vfsservice.cpp b/src/zenserver/vfs/vfsservice.cpp
index d302a10ec..bf761f8d1 100644
--- a/src/zenserver/vfs/vfsservice.cpp
+++ b/src/zenserver/vfs/vfsservice.cpp
@@ -61,7 +61,7 @@ GetContentAsCbObject(HttpServerRequest& HttpReq, CbObject& Cb)
 // echo {"method": "mount", "params": {"path": "d:\\VFS_ROOT"}} | curl.exe http://localhost:8558/vfs --data-binary @-
 // echo {"method": "unmount"} | curl.exe http://localhost:8558/vfs --data-binary @-
 
-VfsService::VfsService()
+VfsService::VfsService(HttpStatusService& StatusService) : m_StatusService(StatusService)
 {
 	m_Impl = new Impl;
 
@@ -136,10 +136,12 @@ VfsService::VfsService()
 			}
 		},
 		HttpVerb::kPost);
+	m_StatusService.RegisterHandler("vfs", *this);
 }
 
 VfsService::~VfsService()
 {
+	m_StatusService.UnregisterHandler("vfs", *this);
 	delete m_Impl;
 }
 
@@ -169,8 +171,9 @@ VfsService::AddService(Ref<ZenCacheStore>&& Z$)
 
 #else
 
-VfsService::VfsService()
+VfsService::VfsService(HttpStatusService& StatusService) : m_StatusService(StatusService)
 {
+	ZEN_UNUSED(StatusService);
 }
 
 VfsService::~VfsService()
@@ -209,6 +212,14 @@ VfsService::BaseUri() const
 }
 
 void
+VfsService::HandleStatusRequest(HttpServerRequest& Request)
+{
+	CbObjectWriter Cbo;
+	Cbo << "ok" << true;
+	Request.WriteResponse(HttpResponseCode::OK, Cbo.Save());
+}
+
+void
 VfsService::HandleRequest(HttpServerRequest& HttpServiceRequest)
 {
 	m_Router.HandleRequest(HttpServiceRequest);