Implement #2993

src/services/register-instance.ts

@@ -0,0 +1,22 @@
+import Instance, { IInstance } from '../models/instance';
+import federationChart from '../chart/federation';
+
+export default async function(host: string): Promise<IInstance> {
+	if (host == null) return null;
+
+	const index = await Instance.findOne({ host });
+
+	if (index == null) {
+		const i = await Instance.insert({
+			host,
+			caughtAt: new Date(),
+			system: null // TODO
+		});
+
+		federationChart.update(true);
+
+		return i;
+	} else {
+		return index;
+	}
+}