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// Copyright Epic Games, Inc. All Rights Reserved.
#include "vfsservice.h"
#include <zenstore/vfsimpl.h>
#include <zencore/compactbinarybuilder.h>
namespace zen {
using namespace std::literals;
#if ZEN_WITH_VFS
//////////////////////////////////////////////////////////////////////////
bool
GetContentAsCbObject(HttpServerRequest& HttpReq, CbObject& Cb)
{
IoBuffer Payload = HttpReq.ReadPayload();
HttpContentType PayloadContentType = HttpReq.RequestContentType();
switch (PayloadContentType)
{
case HttpContentType::kJSON:
case HttpContentType::kUnknownContentType:
case HttpContentType::kText:
{
std::string JsonText(reinterpret_cast<const char*>(Payload.GetData()), Payload.GetSize());
Cb = LoadCompactBinaryFromJson(JsonText).AsObject();
if (!Cb)
{
HttpReq.WriteResponse(HttpResponseCode::BadRequest,
HttpContentType::kText,
"Content format not supported, expected JSON format");
return false;
}
}
break;
case HttpContentType::kCbObject:
Cb = LoadCompactBinaryObject(Payload);
if (!Cb)
{
HttpReq.WriteResponse(HttpResponseCode::BadRequest,
HttpContentType::kText,
"Content format not supported, expected compact binary format");
return false;
}
break;
default:
HttpReq.WriteResponse(HttpResponseCode::BadRequest, HttpContentType::kText, "Invalid request content type");
return false;
}
return true;
}
//////////////////////////////////////////////////////////////////////////
//
// to test:
//
// 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(HttpStatusService& StatusService, VfsServiceImpl* ServiceImpl) : m_StatusService(StatusService), m_Impl(ServiceImpl)
{
m_Router.RegisterRoute(
"info",
[&](HttpRouterRequest& Request) {
CbObjectWriter Cbo;
Cbo << "running" << m_Impl->IsVfsRunning();
Cbo << "rootpath" << m_Impl->GetMountpointPath();
Request.ServerRequest().WriteResponse(HttpResponseCode::OK, Cbo.Save());
},
HttpVerb::kGet | HttpVerb::kHead);
m_Router.RegisterRoute(
"",
[&](HttpRouterRequest& Req) {
CbObject Payload;
if (!GetContentAsCbObject(Req.ServerRequest(), Payload))
return;
std::string_view RpcName = Payload["method"sv].AsString();
if (RpcName == "mount"sv)
{
CbObjectView Params = Payload["params"sv].AsObjectView();
std::string_view Mountpath = Params["path"sv].AsString();
if (Mountpath.empty())
{
return Req.ServerRequest().WriteResponse(HttpResponseCode::BadRequest, HttpContentType::kText, "no path specified");
}
if (m_Impl->IsVfsRunning())
{
return Req.ServerRequest().WriteResponse(HttpResponseCode::BadRequest, HttpContentType::kText, "VFS already mounted");
}
try
{
m_Impl->Mount(Mountpath);
}
catch (const std::exception& Ex)
{
return Req.ServerRequest().WriteResponse(HttpResponseCode::BadRequest, HttpContentType::kText, Ex.what());
}
Req.ServerRequest().WriteResponse(HttpResponseCode::OK);
}
else if (RpcName == "unmount"sv)
{
if (!m_Impl->IsVfsRunning())
{
return Req.ServerRequest().WriteResponse(HttpResponseCode::BadRequest, HttpContentType::kText, "VFS not active");
}
try
{
m_Impl->Unmount();
}
catch (const std::exception& Ex)
{
return Req.ServerRequest().WriteResponse(HttpResponseCode::BadRequest, HttpContentType::kText, Ex.what());
}
Req.ServerRequest().WriteResponse(HttpResponseCode::OK);
}
else
{
Req.ServerRequest().WriteResponse(HttpResponseCode::BadRequest, HttpContentType::kText, "unknown RPC"sv);
}
},
HttpVerb::kPost);
m_StatusService.RegisterHandler("vfs", *this);
}
VfsService::~VfsService()
{
m_StatusService.UnregisterHandler("vfs", *this);
}
#else
VfsService::VfsService(HttpStatusService& StatusService, VfsServiceImpl* ServiceImpl) : m_StatusService(StatusService)
{
ZEN_UNUSED(ServiceImpl);
}
VfsService::~VfsService()
{
}
#endif
const char*
VfsService::BaseUri() const
{
return "/vfs/";
}
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);
}
} // namespace zen
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