mirror of
https://github.com/block/buzz.git
synced 2026-10-27 04:30:52 +00:00
e645918c63
🤖 The relay pushes several tag filters into SQL as JSONB containment (`tags @> [[name, value]]`). Containment ignores element position, so a tag like `["x","e",<id>]` or `["meta","t",v]` satisfies `#e:[<id>]` or `#t:[v]`, and `#t:["t"]` matches `["t","other"]`. Because the predicate runs before `LIMIT`, a newer event that only matches by containment can take a `limit: 1` slot; the exact NIP-01 post-filter then drops it and the real match is never returned. Where no post-filter follows, the decoy is returned or counted outright. `push_exact_tag_match` in `buzz-db/src/store/event.rs` keeps containment as the GIN-indexed prefilter (one array-bound `tags @> ANY(...)`, so the e-tag planner shape is unchanged) and adds a positional `EXISTS (... tag->>0 = name AND tag->>1 = ANY(values))`. It now backs every `EventQuery` tag pushdown: | Pushdown | Before | Effect of over-match | |---|---|---| | `#e` (`e_tags`, query and COUNT) | containment | REQ `limit` slot theft; COUNT has no post-filter and counted decoys; thread aux closure returned decoy reactions/replies | | artifact `#d` (`d_tag_values`) | containment | `limit` slot theft on NIP-AR identity lookups | | `custom_tag` (bridge `#buzz-channel`) | containment | no post-filter: a decoy project/repository was returned for its channel | | shared-gated visibility (`shared_gated_reader`) | containment of `["shared","true"]` | a private event tagged `["x","shared","true"]` took a page slot before `event_visible_to_reader` dropped it, so the page came back short. Never a visibility leak: the post-filter stays in place | **Bridge `/count` honors `#buzz-channel`.** `POST /query` scoped project/repository reads by `#buzz-channel`, but `POST /count` ignored it, so a count for one channel counted matching projects in every channel the reader can see. `/count` now sets the same `custom_tag` on both its channel-scoped and access-scoped paths, and the COUNT SQL builder pushes `custom_tag` down exactly like the query builder, so `/count` and `/query` select the same events on both the fast count and the post-filtered fallback. Left unchanged: the retention-free purge predicate for mesh status (`tags @> [["k","buzz-mesh-status"]]`). It mirrors the migration 0019 trigger, has no `LIMIT`, and only affects how the author's own deleted event is purged. REQ `#t` outside group-state kinds is still post-filtered only. --------- Signed-off-by: Will Pfleger <pfleger.will@gmail.com> Co-authored-by: Hayt <211b96e6a2b7f45fd4047988976c7bbbeeda0c15f3ae7b32eec20834b5a55118@buzz.block.builderlab.xyz>