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db/events: use stricter tagConditions to not pollute the database

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This commit is contained in:
Alex Gleason
2023-09-09 15:29:17 -05:00
parent b5a84627c8
commit fe08aaa2a3
2 changed files with 33 additions and 9 deletions
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24
src/db/events.ts
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@@ -1,19 +1,25 @@
import { db, type TagRow } from '@/db.ts';
import { type Event, type Insertable, SqliteError } from '@/deps.ts';
import { isParameterizedReplaceableKind } from '@/kinds.ts';
import { jsonMetaContentSchema } from '@/schemas/nostr.ts';
import { isNostrId, isURL } from '@/utils.ts';
import type { DittoFilter, GetFiltersOpts } from '@/filter.ts';
import { jsonMetaContentSchema } from '@/schemas/nostr.ts';
type TagCondition = ({ event, count }: { event: Event; count: number }) => boolean;
type TagCondition = ({ event, count, value }: {
event: Event;
count: number;
value: string;
}) => boolean;
/** Conditions for when to index certain tags. */
const tagConditions: Record<string, TagCondition> = {
'd': ({ event, count }) => 30000 <= event.kind && event.kind < 40000 && count === 0,
'e': ({ count }) => count < 15,
'p': ({ event, count }) => event.kind === 3 || count < 15,
'proxy': ({ count }) => count === 0,
'q': ({ event, count }) => event.kind === 1 && count === 0,
't': ({ count }) => count < 5,
'd': ({ event, count, value }) => isParameterizedReplaceableKind(event.kind) && count === 0 && value.length < 200,
'e': ({ count, value }) => isNostrId(value) && count < 15,
'p': ({ event, count, value }) => isNostrId(value) && (event.kind === 3 || count < 15),
'proxy': ({ count, value }) => isURL(value) && count === 0 && value.length < 200,
'q': ({ event, count, value }) => isNostrId(value) && event.kind === 1 && count === 0,
't': ({ count, value }) => count < 5 && value.length < 50,
};
/** Insert an event (and its tags) into the database. */
@@ -37,7 +43,7 @@ function insertEvent(event: Event): Promise<void> {
const tags = event.tags.reduce<Insertable<TagRow>[]>((results, [name, value]) => {
tagCounts[name] = (tagCounts[name] || 0) + 1;
if (value && tagConditions[name]?.({ event, count: tagCounts[name] - 1 })) {
if (value && tagConditions[name]?.({ event, count: tagCounts[name] - 1, value })) {
results.push({
event_id: event.id,
tag: name,