Rpc endpoint for election statistics

nano/node/json_handler.cpp

@@ -2002,6 +2002,44 @@ void nano::json_handler::confirmation_active ()
 	response_errors ();
 }
 
+void nano::json_handler::election_statistics ()
+{
+	auto active_elections = node.active.list_active ();
+	unsigned normal_count = 0;
+	unsigned hinted_count = 0;
+	unsigned optimistic_count = 0;
+	unsigned total_count = 0;
+
+	for (auto const & election : active_elections)
+	{
+		total_count++;
+		switch (election->behavior ())
+		{
+			case election_behavior::normal:
+				normal_count++;
+				break;
+			case election_behavior::hinted:
+				hinted_count++;
+				break;
+			case election_behavior::optimistic:
+				optimistic_count++;
+				break;
+		}
+	}
+
+	auto utilization_percentage = (static_cast<double> (total_count * 100) / node.config.active_elections_size);
+	std::stringstream stream;
+	stream << std::fixed << std::setprecision (2) << utilization_percentage;
+
+	response_l.put ("normal", normal_count);
+	response_l.put ("hinted", hinted_count);
+	response_l.put ("optimistic", optimistic_count);
+	response_l.put ("total", total_count);
+	response_l.put ("aec_utilization_percentage", stream.str ());
+
+	response_errors ();
+}
+
 void nano::json_handler::confirmation_history ()
 {
 	boost::property_tree::ptree elections;
@@ -5305,6 +5343,7 @@ ipc_json_handler_no_arg_func_map create_ipc_json_handler_no_arg_func_map ()
 	no_arg_funcs.emplace ("accounts_pending", &nano::json_handler::accounts_pending);
 	no_arg_funcs.emplace ("accounts_receivable", &nano::json_handler::accounts_receivable);
 	no_arg_funcs.emplace ("active_difficulty", &nano::json_handler::active_difficulty);
+	no_arg_funcs.emplace ("election_statistics", &nano::json_handler::election_statistics);
 	no_arg_funcs.emplace ("available_supply", &nano::json_handler::available_supply);
 	no_arg_funcs.emplace ("block_info", &nano::json_handler::block_info);
 	no_arg_funcs.emplace ("block", &nano::json_handler::block_info);

nano/node/json_handler.hpp

@@ -46,6 +46,7 @@ class json_handler : public std::enable_shared_from_this<nano::json_handler>
 	void accounts_pending ();
 	void accounts_receivable ();
 	void active_difficulty ();
+	void election_statistics ();
 	void available_supply ();
 	void block_info ();
 	void block_confirm ();