Cache user role in session object

There is an async call within the router that leads to a small, but
pervasive performance issue for all queries. Removing that call from the
router has the potential to increase the performance of every
authenticated query, and significantly reduce our dbus traffic for
"simple" operations.

This commit re-implements the role cache in session object that existed
previously many years ago.  Each users role is fetched during
authentication and persisted in session object. Each successive request
can then be matched against the privilege which is there in the
in-memory session object.

This was discussed on below commit
https://gerrit.openbmc-project.xyz/c/openbmc/bmcweb/+/39756

Tested by:
```
POST /redfish/v1/SessionService/Sessions {"UserName":"root", "Password": “0penBmc”}
```

Followed by redfish queries

Get /redfish/v1/AccountService

Tested user role persistency

Redfish service validator passes.

Signed-off-by: Ravi Teja <raviteja28031990@gmail.com>
Signed-off-by: Ed Tanous <edtanous@google.com>
Change-Id: I575599c29358e32849446ce6ee7f62c8eb3885f6

1 files changed, 4 insertions, 0 deletions

diff --git a/src/webserver_main.cpp b/src/webserver_main.cpp
index 67e2aaef04..34fe18f07d 100644
--- a/src/webserver_main.cpp
+++ b/src/webserver_main.cpp
@@ -18,6 +18,7 @@
 #include "security_headers.hpp"
 #include "ssl_key_handler.hpp"
 #include "user_monitor.hpp"
+#include "user_role_map.hpp"
 #include "vm_websocket.hpp"
 #include "webassets.hpp"
 
@@ -143,6 +144,9 @@ static int run()
     crow::hostname_monitor::registerHostnameSignal();
 #endif
 
+    // Init the user role map
+    crow::UserRoleMap::getInstance();
+
     bmcweb::registerUserRemovedSignal();
 
     app.run();