* Added size exceeded error code

* Return provider status from selected client_state calls
* Added more methods to provider interface

include/wsrep/server_state.hpp

@@ -316,6 +316,7 @@ namespace wsrep
                      const wsrep::ws_meta& ws_meta,
                      const wsrep::const_buffer& data);
 
+        enum state state() const { return state_; }
         /**
          * Set server wide wsrep debug logging level.
          *