test

            auto &pclient = g_Cluster->getClient();

            if (pclient) {

                // Fetch cluster health under mutex, then release immediately

                // to avoid blocking session/replication operations during JSON build

                decltype(pclient->get_cluster_status()) health;

                try {

                    std::lock_guard<std::mutex> lock(g_Cluster->getClientMutex());

                auto health = pclient->get_cluster_status();

                    health = pclient->get_cluster_status();

                } catch (...) {

                    json_object_object_add(jobj, "status", json_object_new_string("UNAVAILABLE"));

                    json_object_object_add(jobj, "nodes_total", json_object_new_int(0));

                    json_object_object_add(jobj, "nodes_online", json_object_new_int(0));

                    sendJson(curreq, jobj);

                    json_object_put(jobj);

                    return;

                }

                uint32_t total = health.nodes_total;

                uint32_t online = health.nodes_online;