Fixed metadata member order; added prometheus-specific endpoint

src/Plugins/RenX/RenX.ServerList/RenX_ServerList.cpp

@@ -151,6 +151,7 @@ bool RenX_ServerListPlugin::initialize()
 	RenX_ServerListPlugin::server_list_long_page_name = this->config.get("HumanServersPageName"_jrs, "servers_long"_jrs);
 	RenX_ServerListPlugin::server_page_name = this->config.get("ServerPageName"_jrs, "server"_jrs);
 	RenX_ServerListPlugin::metadata_page_name = this->config.get("MetadataPageName"_jrs, "metadata"_jrs);
+	RenX_ServerListPlugin::metadata_prometheus_page_name = this->config.get("MetadataPrometheusPageName"_jrs, "metadata_prometheus"_jrs);
 
 	/** Initialize content */
 	Jupiter::HTTP::Server &server = getHTTPServer();
@@ -187,6 +188,14 @@ bool RenX_ServerListPlugin::initialize()
 	content->free_result = false;
 	server.hook(RenX_ServerListPlugin::web_hostname, RenX_ServerListPlugin::web_path, content);
 
+	// Metadata page
+	content = new Jupiter::HTTP::Server::Content(RenX_ServerListPlugin::metadata_prometheus_page_name, handle_metadata_prometheus_page);
+	content->language = &Jupiter::HTTP::Content::Language::ENGLISH;
+	content->type = &CONTENT_TYPE_APPLICATION_JSON;
+	content->charset = &Jupiter::HTTP::Content::Type::Text::Charset::UTF8;
+	content->free_result = false;
+	server.hook(RenX_ServerListPlugin::web_hostname, RenX_ServerListPlugin::web_path, content);
+
 	this->updateServerList();
 	return true;
 }
@@ -214,6 +223,11 @@ Jupiter::ReadableString *RenX_ServerListPlugin::getMetadataJSON()
 	return &metadata_json;
 }
 
+Jupiter::ReadableString *RenX_ServerListPlugin::getMetadataPrometheus()
+{
+	return &metadata_prometheus;
+}
+
 constexpr const char *json_bool_as_cstring(bool in)
 {
 	return in ? "true" : "false";
@@ -602,7 +616,10 @@ void RenX_ServerListPlugin::updateMetadata() {
 	}
 
 	metadata_json.format(R"json({"player_count":%u,"server_count":%u})json",
-		server_count, player_count);
+		player_count, server_count);
+
+	metadata_prometheus.format("player_count %u\nserver_count %u\n",
+		player_count, server_count);
 }
 
 Jupiter::ReferenceString RenX_ServerListPlugin::getListServerAddress(const RenX::Server& server) {
@@ -771,6 +788,11 @@ Jupiter::ReadableString *handle_metadata_page(const Jupiter::ReadableString&)
 	return pluginInstance.getMetadataJSON();
 }
 
+Jupiter::ReadableString *handle_metadata_prometheus_page(const Jupiter::ReadableString&)
+{
+	return pluginInstance.getMetadataPrometheus();
+}
+
 extern "C" JUPITER_EXPORT Jupiter::Plugin *getPlugin()
 {
 	return &pluginInstance;

src/Plugins/RenX/RenX.ServerList/RenX_ServerList.h

@@ -37,6 +37,7 @@ public: // RenX_ServerListPlugin
 
 	Jupiter::ReadableString *getServerListJSON();
 	Jupiter::ReadableString* getMetadataJSON();
+	Jupiter::ReadableString* getMetadataPrometheus();
 
 	void addServerToServerList(RenX::Server &server);
 	void updateServerList();
@@ -57,13 +58,15 @@ public: // RenX::Plugin
 	void RenX_OnMapLoad(RenX::Server &server, const Jupiter::ReadableString &map) override;
 
 private:
-	Jupiter::StringS server_list_json, metadata_json;
-	Jupiter::StringS web_hostname, web_path, server_list_page_name, server_list_long_page_name, server_page_name, metadata_page_name;
+	Jupiter::StringS server_list_json, metadata_json, metadata_prometheus;
+	Jupiter::StringS web_hostname, web_path;
+	Jupiter::StringS server_list_page_name, server_list_long_page_name, server_page_name, metadata_page_name, metadata_prometheus_page_name;
 };
 
 Jupiter::ReadableString *handle_server_list_page(const Jupiter::ReadableString &);
 Jupiter::ReadableString *handle_server_list_long_page(const Jupiter::ReadableString &);
 Jupiter::ReadableString *handle_server_page(const Jupiter::ReadableString &);
 Jupiter::ReadableString *handle_metadata_page(const Jupiter::ReadableString &);
+Jupiter::ReadableString *handle_metadata_prometheus_page(const Jupiter::ReadableString&);
 
 #endif // _RENX_SERVERLIST_H_HEADER