AER-6840 - Adds stat to track the number of monitor records present.

Author: jpollack-aerospike

as/include/base/mrt_monitor.h

@@ -87,3 +87,4 @@ void as_mrt_monitor_proxyer_roll_done(msg* m, msg* fab_msg, monitor_roll_origin*
 void as_mrt_monitor_proxyer_roll_timeout(msg* fab_msg, monitor_roll_origin* roll_orig);
 
 uint32_t as_mrt_monitor_n_active(const struct as_namespace_s* ns);
+uint64_t as_mrt_monitor_n_present(const struct as_namespace_s* ns);

as/src/base/mrt_monitor_ce.c

@@ -115,3 +115,9 @@ as_mrt_monitor_n_active(const as_namespace* ns)
 {
 	return 0;
 }
+
+uint64_t
+as_mrt_monitor_n_present(const as_namespace* ns)
+{
+	return 0;
+}

as/src/base/thr_info.c

@@ -3998,6 +3998,7 @@ info_get_namespace_info(as_namespace* ns, cf_dyn_buf* db)
 
 	// MRT monitor activity.
 
+	info_append_uint64(db, "mrt_monitors", as_mrt_monitor_n_present(ns));
 	info_append_uint32(db, "mrt_monitors_active", as_mrt_monitor_n_active(ns));
 
 	// Persistent memory block keys' namespace ID (enterprise only).