ditto/src/firehose.ts

import { Stickynotes } from '@soapbox/stickynotes';

import { Storages } from '@/storages.ts';
import { nostrNow } from '@/utils.ts';

import * as pipeline from './pipeline.ts';

const console = new Stickynotes('ditto:firehose');

/**
 * This function watches events on all known relays and performs
 * side-effects based on them, such as trending hashtag tracking
 * and storing events for notifications and the home feed.
 */
export async function startFirehose() {
  const store = await Storages.client();

  for await (const msg of store.req([{ kinds: [0, 1, 3, 5, 6, 7, 9735, 10002], limit: 0, since: nostrNow() }])) {
    if (msg[0] === 'EVENT') {
      const event = msg[2];
      console.debug(`NostrEvent<${event.kind}> ${event.id}`);

      pipeline
        .handleEvent(event, AbortSignal.timeout(5000))
        .catch(() => {});
    }
  }
}