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pipeline: don't stream events older than 10 seconds

This commit is contained in:
Alex Gleason 2023-08-24 17:26:46 -05:00
parent f1c465beea
commit a0dff12ca0
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1 changed files with 6 additions and 1 deletions
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7
src/pipeline.ts
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@ -5,7 +5,7 @@ import { type Event } from '@/deps.ts';
import { isLocallyFollowed } from '@/queries.ts'; import { isLocallyFollowed } from '@/queries.ts';
import { Sub } from '@/subs.ts'; import { Sub } from '@/subs.ts';
import { trends } from '@/trends.ts'; import { trends } from '@/trends.ts';
import { isRelay, nostrDate } from '@/utils.ts'; import { isRelay, nostrDate, nostrNow, Time } from '@/utils.ts';
import type { EventData } from '@/types.ts'; import type { EventData } from '@/types.ts';
@ -75,8 +75,13 @@ function trackRelays(event: Event) {
return addRelays([...relays]); return addRelays([...relays]);
} }
/** Determine if the event is being received in a timely manner. */
const isFresh = ({ created_at }: Event): boolean => created_at >= nostrNow() - Time.seconds(10);
/** Distribute the event through active subscriptions. */ /** Distribute the event through active subscriptions. */
function streamOut(event: Event, data: EventData) { function streamOut(event: Event, data: EventData) {
if (!isFresh(event)) return;
for (const { socket, id } of Sub.matches(event, data)) { for (const { socket, id } of Sub.matches(event, data)) {
socket.send(JSON.stringify(['EVENT', id, event])); socket.send(JSON.stringify(['EVENT', id, event]));
} }