misskey/src/services/register-or-fetch-instance-doc.ts

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import Instance, { IInstance } from '../models/instance';
import federationChart from '../services/chart/federation';
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export async function registerOrFetchInstanceDoc(host: string): Promise<IInstance> {
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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;
}
}