サーバーの統計情報をメモリに記憶するようにするなど

src/server-stats.ts

@@ -0,0 +1,36 @@
+import * as os from 'os';
+const osUtils = require('os-utils');
+import * as diskusage from 'diskusage';
+import Xev from 'xev';
+
+const ev = new Xev();
+
+/**
+ * Report stats regularly
+ */
+export default function() {
+	const log = [];
+
+	ev.on('requestServerStatsLog', id => {
+		ev.emit('serverStatsLog:' + id, log);
+	});
+
+	setInterval(() => {
+		osUtils.cpuUsage(cpuUsage => {
+			const disk = diskusage.checkSync(os.platform() == 'win32' ? 'c:' : '/');
+			const stats = {
+				cpu_usage: cpuUsage,
+				mem: {
+					total: os.totalmem(),
+					free: os.freemem()
+				},
+				disk,
+				os_uptime: os.uptime(),
+				process_uptime: process.uptime()
+			};
+			ev.emit('serverStats', stats);
+			log.push(stats);
+			if (log.length > 50) log.shift();
+		});
+	}, 1000);
+}