Commit Graph

10 Commits

Author SHA1 Message Date
Luke Tornquist
97e1f6a082 fix(db): validate channel roster snapshots in the app writer (#8316)
## Summary

Phase 1 of retiring the channel roster snapshot trigger
(`trg_events_guard_channel_roster_snapshot`, migration 0032).

Every admitted writer that can store a kind 39002 roster snapshot now
runs the same check the trigger runs, on the same transaction and under
the same lock:

- `LockedMemberSnapshot::replace_member_event` (relay's live roster
publisher) validates the snapshot it already holds the membership lock
for, before soft-deleting the old head.
- `insert_event_on` and `insert_event_with_thread_metadata_tx` (generic
event writes).
- `replace_parameterized_event_in_transaction_impl` (inside its existing
savepoint) and `Db::replace_addressable_event` (admin reconciliation
path), after dominance checks and before the old head is deleted.

The validator (`validate_channel_roster_snapshot`) is a direct port of
`guard_channel_roster_snapshot()`: four-field `p` tags, 64-char hex
pubkey, empty relay field, valid role, and an exact match against active
`channel_members` rows. It raises the same `23514` messages, so callers
still see `DbError::Sqlx(sqlx::Error::Database(..))` with the same code
and text.

**Lock order:** replacement key, then channel-membership key, then the
canonical read, then the old-head `UPDATE` and the write. Legacy writers
took the membership key later, at the trigger's INSERT, after the
old-head row locks. Taking it before the `UPDATE` is not the same order,
but it is strictly safer: it removes the row-lock/membership-key cycle.
The membership writers in `channel_members.rs` take the same membership
key before they change rows. Not every membership writer does yet:
`execute_kick_with_marker` (reached from report enforcement) and
`deploy_kick_member` in `relay_admin_actions.rs` set `removed_at`
without the key, so a kick can commit after a roster passes validation
and before that roster commits, leaving the removed member listed. The
retained trigger has the same gap, so this PR neither causes nor closes
it. When the trigger also runs it re-takes a key this transaction
already holds; transaction advisory locks are re-entrant, so this adds
no wait.

The validator is one verdict query on the happy path. On failure it
raises the trigger's exact error via a `DO` block, so mixed-version
behavior is identical; phase 2 can switch to a typed `DbError`.

**Unchanged on purpose:** the trigger, its function, migration 0032, and
the startup probe `verify_channel_roster_fence_behavior`. Pods still on
the old version depend on them. Phase 2 drops them once this version is
running everywhere.

## Tests

New PG tests in `channel_members.rs` `postgres_tests`, each with only
the roster trigger disabled (the helper asserts the catalog check then
fails):

- `app_roster_guard_matches_trigger_for_roster_input_table`: 19 shape
and membership cases (3/5-field tags, short and non-hex pubkeys, relay
field, unknown role, duplicate, role mismatch, missing/extra member,
uppercase hex, non-`p` tags, empty rosters, all roles). For each one,
the app outcome through `Db::replace_addressable_event` must equal the
trigger's outcome on a raw INSERT, including SQLSTATE and message.
-
`app_roster_guard_locked_writer_rejects_stale_and_accepts_current_without_trigger`
-
`app_roster_guard_covers_generic_and_parameterized_writers_without_trigger`
-
`app_roster_guard_rechecks_after_concurrent_membership_commit_without_trigger`:
the 0032 race. A newer membership commits while an older snapshot waits
on the membership key. The barrier is `pg_locks` with a bound, not
sleeps.

`stale_legacy_roster_cannot_replace_new_locked_snapshot`
(`replaceable.rs`) and `desired_schema_rejects_stale_legacy_roster_role`
(`channel_members.rs`) now simulate the old binary inline (replacement
key, old-head `UPDATE`, raw INSERT) instead of calling the app API, so
they test the retained trigger again. The replaceable.rs one keeps its
one-connection pool, so it still catches self-deadlock.

`observability_source.rs` gains
`every_production_event_insert_runs_the_roster_guard`, which requires a
real guard call in every production `INSERT INTO events` function, with
explicit exceptions (NIP-43 membership and push lease rows, both
`channel_id` NULL, and the two rolled-back startup probes), plus a
self-test.

Falsified: removing one guard call fails the source policy; dropping the
role clause or `lower()` fails the parity table; disabling the trigger
fails both legacy tests. The PG tests are picked up by the `postgres-ci`
nextest filter (`test(/postgres_tests::/)`); the source policy runs in
`just test-unit`.

### Coverage limits (review follow-up)

- `every_production_event_insert_runs_the_roster_guard` is a presence
check. It rejects missing, commented, and quoted calls, but it does not
prove a call is awaited, reachable, or passed the event's real kind and
channel. Behavior is covered by the PG tests above. The test now says
this in its doc comment.
- Exemptions match by function header. A kind 39002 insert added inside
one of the four exempt functions would pass the policy. This is
documented next to the exemption list.
- The 19-case parity table and the race test drive
`Db::replace_addressable_event` only. The generic, parameterized, and
locked writers get the mismatch case only, and the parameterized path's
membership-key-before-delete ordering is not exercised concurrently. All
five writers call the same validator, so this PR doesn't widen these
tests.
- `disable_roster_trigger` commits `DISABLE TRIGGER` on the test
database. That is safe under the per-test database harness the
`postgres-ci` profile uses, but not against a shared database. Its doc
comment now says so.

## Validation

Run on a Blox workstation (private PG 16 and Redis) against a tree
byte-identical to this commit:

- `cargo fmt --all -- --check`, `cargo clippy --workspace --all-targets
-- -D warnings`, `cargo nextest run -p buzz-db --lib`: pass.
- `cargo nextest run -p buzz-db --test observability_source`: 19 passed.
- `scripts/postgres-test-run.sh -p <pkg>` for buzz-admin, buzz-audit,
buzz-deletion, buzz-push-gateway, buzz-relay, buzz-search,
buzz-workflow: pass.
- buzz-db: the full run passed 513 and was stopped at a 240 s deadline
on `writer_pool_rejects_non_read_committed_database_default`, which
hangs the same way on the unmodified base. A second run excluding the
three host-flaky runtime tests already reproduced on the base passed all
511 others.

## Simpler?

Not yet. While the trigger is still in place, the check runs twice.
Phase 2 deletes the trigger, its function, the startup catalog and
behavior probes, the migration.rs equivalence asserts, and the pgschema
reconcile entry, which leaves one check in Rust.

## Phase 2 (separate PR, after fleet rollout)

**Prerequisite before claiming complete roster serialization (phase 2 or
anywhere else):** make both kick paths take the channel membership key
before they change rows, and add a concurrent kick-vs-roster-publication
test. The retained trigger does not prove this; it has the same gap.


A new migration drops the trigger from `events` and its partitions, then
drops `guard_channel_roster_snapshot()`. It also removes the schema
files and includes, `verify_channel_roster_fence*` and the relay startup
call, the migration.rs asserts, and the probe tests, and updates
`scripts/reconcile-schema-after-pgschema.sql`.

---------

Signed-off-by: Elrond <28d6302a099e5225b02c4155ac4236e4912603df2ab08dbfc2f4fef08ce598c8@buzz.block.builderlab.xyz>
Co-authored-by: Elrond <28d6302a099e5225b02c4155ac4236e4912603df2ab08dbfc2f4fef08ce598c8@buzz.block.builderlab.xyz>
2026-10-16 17:07:25 -04:00
Logan Johnson
2f79374f48 feat(relay): channel labels (#8175)
🤖
## Summary
A plugin or agent often needs to tag its own channels and then find them
again, for example "my attention-config channel" or "all channels of
this workspace". Today a channel has no labels: the relay ignores any
`t` tags in create or edit requests. This PR adds channel labels.

- A create request can carry up to 8 labels as `["t", "<label>"]` tags.
- An edit request with `t` tags replaces the label set. `["t", ""]`
alone clears it, the same convention as `["ttl", ""]`. Only owners and
admins can change labels, as for the name.
- The relay publishes each label as a `t` tag on the channel's state
events, after the channel type tag.

Part 2 of 3, stacked on part 1.

### Related issue
None found.

### Details
- **Rules.** A label uses 1–64 characters from `a-z`, `0-9`, `.`, `:`
and `-`. The relay refuses a label equal to a channel type name
(`stream`, `forum`, `dm`, `workflow`, `system`), so a label cannot make
a channel look like another type.
- **No trust from labels.** Any admin can set a label. Only the
relay-written creator tag (part 1) says who made a channel.
- **Storage.** New migration `0061_channel_labels.sql` adds
`channels.labels TEXT[] NOT NULL DEFAULT '{}'`. Channels without labels
look and behave as before.
- **Readers.** The CLI and `buzz-acp` read the channel type from the
first `t` tag. Before this PR they used the last one, which would now be
a label.
- **Spec.** NIP-CL gets a "Channel labels" section with these rules.

### Testing
- Relay tests: labels at creation appear after the type tag, edit
replaces and clears them, invalid labels are refused, and members who
are not admins cannot change them.
- Unit tests for the label rules: allowed characters, length, reserved
type names, the 8-label cap and the clear marker.
- `buzz-acp` test: the channel type comes from the first `t` tag, not a
label.

### Stack
These are two stacks. Merge them in this order. Client support
(creating, labeling and finding these channels) will be in
block/buzz-app, not the buzz SDK and CLI.

**Stack 1: channel labels and creator lookup (#8174–#8176)**

1. #8174 channel type and creator tags, and the channel creation time
2. #8175 channel labels ← this PR
3. #8176 database-side label and creator match, and the rule for
choosing one channel

**Stack 2: system channels (#8180–#8182)**, stacked on stack 1 because
it uses labels and the creator tag

4. #8180 the system channel type
5. #8181 leave system channels out of reads that do not name them
6. #8182 channel-state filters opt in to system channels

---------

Signed-off-by: Logan Johnson <loganj@squareup.com>
Co-authored-by: Larry <627498bd4bd1f281a16431e3c6cce3b5c25b6692798c78672298aefbf2f8f8b5@buzz.block.builderlab.xyz>
2026-10-14 17:25:46 -04:00
Tom Brow
5b907b838a fix(push): isolate push enqueue and stop workers on rollback (#8216)
Push enqueueing previously ran inside the message transaction, so a push
lock or database error could block or reject a message. Configured relay
writers now submit bounded best-effort work only after commit. A
dedicated connection and bounded queue isolate enqueue waits and
failures from message-write connections. Overload, errors, process loss,
or shutdown may drop a notification; the committed message remains
authoritative.

`BUZZ_PUSH_ENABLED=false` disables the application producer and workers.
Updated writer connections always bypass any surviving enqueue trigger.
The overlap migration updates an existing function without resurrecting
retired objects. Apply it before relying on isolation with a surviving
trigger, and replace every old enabled process and writer connection:
missing settings preserve legacy behavior during overlap.

SIGTERM/Ctrl-C cancels enqueue, matcher, and delivery work before
listener drain. Durable queues, claims, leases, preferences, and
delivery configuration remain intact. Claims expire normally; gateway
requests already accepted may still deliver. Reactivation requires an
explicit operator decision about retained work. There is no automatic
purge, startup interlock, or backfill of messages written while
disabled.

Built on merged [#8135](https://github.com/block/buzz/pull/8135),
including [#8178](https://github.com/block/buzz/pull/8178). Trigger
retirement [#8210](https://github.com/block/buzz/pull/8210) remains
open; this change is tested with the trigger present and after removal.
Operational details are in [the rollback and reactivation
guide](https://github.com/block/buzz/blob/relay-push-rollback/docs/push-gateway-deployment.md#relay-rollback-and-reactivation).

### Validation


[9d3d710](9d3d710dc1)
changes documentation and Rust comments only, with no executable or
assertion changes. Formatting and diff checks passed;
[12f1d1e](12f1d1e814)
additionally restores the reviewer-requested caveat that active lease
renewal may suppress a notification. This is also documentation-only;
Owner approval was confirmed on 12f1d1e.
[a4f602d](a4f602df49)
subsequently merges main to resolve a migration-count conflict after
main added migration 0058. Both 0058 and rollback migration 0059 are
retained; the focused embedded-migrator test, formatting, and applicable
desktop pre-push checks passed. Current-head [owner
approval](https://github.com/block/buzz/pull/8216#pullrequestreview-5474958334)
is confirmed. [CI attempt 2
passed](https://github.com/block/buzz/actions/runs/37985516452/attempts/2),
with required checks passing or appropriately skipped. The first attempt
failed only the unchanged replica-floor probe test with `MaskedActivity
{ masked: 1 }`; one failed-jobs retry passed without code changes. All
four push contract tests passed. The current-head [advisory security
review](https://github.com/block/buzz/actions/runs/37985514346/job/114006457769)
has remained in its review step since 20:18:51 UTC without a published
result for over 25 minutes. It is stalled under the advisory-review
policy, not a clean security review.

[Required CI checks passed or were
skipped](https://github.com/block/buzz/actions/runs/37964035783) on
[3164b25](3164b25cde).
The advisory security review was cancelled without a published result.
Codex's durable-retry suggestion was [rebutted and
resolved](https://github.com/block/buzz/pull/8216#discussion_r4232674980)
under the explicit best-effort notification contract. The [lease
activation-order
observation](https://github.com/block/buzz/pull/8216#discussion_r4233051799)
is correct. Under the clarified product requirement, either notification
outcome is acceptable during overlapping registration and message
arrival. Exact commit ordering is not required; deliberate historical
backfill remains prohibited. The bot thread is resolved against that
clarification; [Owner review accepted the clarified overlap
contract](https://github.com/block/buzz/pull/8216#pullrequestreview-5474720278)
on 9d3d710.

All 488 PostgreSQL tests passed. The final four-way producer contracts
passed on desired/migrated schemas, with/without triggers. Added
coverage verifies message commit under push-gate and queue-table locks,
recovery after enqueue failure, in-flight enqueue cancellation, the
lease timestamp filter (not production activation ordering),
serving-lease writers, rollback preservation, reconnects, and
reactivation without backfill. Queue saturation and all three relay
worker shutdown tests passed. Rust lint and all 17 source-policy checks
passed.

Full local CI/repository runs encountered the unchanged ACP
`keepalive_resets_idle_past_deadline` timing failure. Earlier desktop
subprocess timing tests also failed under parallel load and passed as an
isolated module. Under Tom's local pre-push exception, this update
excluded `rust-tests` and `desktop-tauri-checks`; remaining hooks stayed
enabled. Required CI validation remains necessary before merge. A
focused run competing with the full database suite hit wall-clock
deadlines; tests now use a short database lock timeout to distinguish
unwanted push dependencies, and their final isolated run passed.

A local process-replacement rehearsal on 3164b25 used the real relay
binary and a mock gateway holding a delivery request open. SIGTERM
closed that request in under 1 ms; the relay exited in 5.02 seconds.
Restarting the same binary with push disabled produced no further
gateway requests over 35 seconds, beyond the 30-second claim expiry. The
outbox row, lease, and its subscriptions remained byte-for-byte
unchanged. This used a seeded outbox and did not exercise APNs or a
mobile device.

Production writer inventory, shutdown deadline, and retained-queue
disposition still require operational validation before rollout. The PR
is marked ready for review. The overlap behavior is accepted by the
product requirement; owner review accepted that contract. No production
deployment has occurred.

---------

Signed-off-by: Tom Brow <tomb@block.xyz>
2026-10-09 13:48:06 -07:00
Luke Tornquist
16eb0b6685 feat(buzz-db): run push enqueue and channel TTL refresh in app code (#8135)
## Summary

Moves the producer side of the two event follow-up triggers into
application code. The triggers stay in place, so both producers run
until a later change drops the triggers after this ships to every pod.

Builds on #8130 (`AdmittedTx`). Refs BUZZ-176.

### Push match enqueue

New `store::event_follow_up::enqueue_push_match` replaces the
`events_enqueue_push_match` trigger
(`schema/functions/enqueue_push_match_job.sql`, migration 0023) and
matches it exactly:

- Same kind allowlist (9, 40002, 45001, 45003), now `PUSH_MATCH_KINDS`.
- Takes the same SHARED `buzz_push_gate:<community>` advisory lock as
its own statement, so under READ COMMITTED the lease check gets a
snapshot taken after the lock is granted. Lease activations still take
it EXCLUSIVE in `push.rs`.
- Same lease predicate (`active AND endpoint_enabled AND expires_at >
now`), then `INSERT push_match_queue ... ON CONFLICT DO NOTHING`.
- Fails closed: any error rejects the event, as the trigger did.

It runs right after the INSERT, only when the insert affected a row. The
consumer side (claims, `lease_until`, attempts, reaper) is already
app-owned and is unchanged.

### Channel TTL refresh

`AdmittedTx` now records every channel that received an event (except
kind 9007 and channel-less events). `AdmittedTx::commit()` refreshes
their `ttl_deadline` as the last statement before COMMIT, which keeps
the commit-time behavior of the deferred `events_refresh_channel_ttl`
trigger (migration 0024):

- One savepoint per channel, in sorted order, under the same SHARED
`buzz_channel_ttl:<community>:<channel>` lock.
- Runs the same `UPDATE` with the same `archived_at`/`deleted_at`
filters as its own statement after the lock, so its snapshot follows the
lock grant. Its `ttl_seconds IS NOT NULL` qual filters a permanent
channel before any tuple lock, so a permanent channel's row is never
locked. An ephemeral channel's row lock is held through the remaining
refreshes and the COMMIT round trip (the trigger held it only inside
COMMIT).
- Lock keys come from one builder per protocol
(`channel::channel_ttl_lock_key`, `push::push_gate_lock_key`), shared by
the SHARED and EXCLUSIVE sides. The shared push-gate wait is observed
through `observe_advisory_lock(LockType::PushGate, …)`.
- On failure it rolls back the savepoint, logs a warning, and increments
`buzz_db_channel_ttl_refresh_failures_total{reason}`, where `reason` is
`lock_timeout` or `error`. The event still commits, matching the
trigger's `EXCEPTION WHEN OTHERS`. A cancelled statement (`57014`) still
rejects the transaction, because plpgsql never caught that either.
- While both producers run, an app refresh that hits `lock_timeout` is
counted, and then the trigger retries it inside COMMIT and may succeed.
So during the dual window the failure counter can over-report and the
worst-case wait doubles. Both go away when the retirement PR drops the
triggers, after which the counter is exact.

### Call sites

Every production `INSERT INTO events` calls
`event_follow_up::after_admitted_insert`:

- `insert_event_on`
- `insert_event_with_thread_metadata_tx`
- `LockedMemberSnapshot::replace_member_event`
- `replace_addressable_event`
- `publish_nip43_membership_locked`
- `accept_lease_event` (kind 30350, a no-op today, kept so the policy
has no exceptions)

`replace_parameterized_event_in_transaction_impl` inserts inside the
`parameterized_replace` savepoint. It enqueues the push job inside the
savepoint, so a rollback to that savepoint also drops the job, and
records the TTL channel only after the savepoint is released.

The two rolled-back verification probes (`verify_floor_guard_behavior`,
`verify_channel_roster_fence_behavior`) are named exceptions, because
they never commit.

### Source policy

`tests/observability_source.rs` adds
`every_production_event_insert_runs_the_follow_up_hook`. It scans every
`crates/*/src` and fails on any function that inserts into `events`
without the hook. Matching is normalized (letter case, whitespace, `\`
continuations, `\n`/`\t`/`\r` escapes, optional `public.`). The file is
masked once first: comments (`//`, nested `/* */`) and string,
raw-string (including `br"`/`cr"`), and char literals become spaces.
`#[cfg(test)]` markers, `fn` signatures and the hook are all found in
that masked view, so a marker in a comment (even a multiline block
comment) strips nothing, an `fn` line inside a multiline string doesn't
split a function, and a commented-out or quoted hook doesn't count. SQL
is still matched in the original text. A table test pins the masker's
output for each literal form. A fixture test pins what the scan rejects
(no hook, push without TTL, a hook in a line comment, block comment, or
string, lowercase or line-broken or escaped SQL, writers after test-only
items or under comment mentions) and what it ignores (writers in
`#[cfg(test)] mod`). A floor of seven hooked writers catches a scan that
silently stops seeing writers.

### Tests

`src/store/event_follow_up_postgres_tests.rs` is the contract suite from
the BUZZ-176 discovery work, ported to the `AdmittedTx` API. It is a
crate-internal `#[cfg(test)]` module because it runs `SET LOCAL`
timeouts and in-transaction reads through the crate-private
`AdmittedTx::conn()`. It runs on both the desired and migration schemas,
in two arms:

- **dual**: production during the migration window, with the triggers
and the app code both running.
- **app-only**: drops both triggers in the disposable database (and
asserts no partition clones remain), the way the retirement migration
will.

The trigger-only baseline is the base branch, where the same suite
passed before this change. The suite also pins the two branches that
differ from "swallow everything": a `lock_timeout` failure increments
`buzz_db_channel_ttl_refresh_failures_total{reason="lock_timeout"}`
exactly once, and a statement cancel (`57014`) during the refresh
rejects the event with no row, job, or deadline change.

## What got simpler

Nothing yet. This adds a parallel producer during the migration window.
It is what lets the follow-up PR delete two plpgsql functions, two
triggers, and the "keep in sync with migrations/00xx" duplication
between `schema/functions/` and `push.rs`.

## Verification

Rebased onto `main` @ `745501962`. All runs used a Linux cloud
workstation with the pinned toolchain (rustc/clippy 1.95.0, hermit), and
the tree was clean before and after each run. The final head,
`c5a06a82`, changes only `crates/buzz-db/tests/observability_source.rs`
compared with `1eb11bde` (via `fbc9a598`, `7c0baa41`, `9199992c` and
`d405b2f6`). Production source is identical between the two.

| Check | SHA | Result |
|---|---|---|
| `cargo fmt --check`, `cargo clippy -p buzz-db --all-targets -D
warnings` | `fbc9a598` | pass |
| `cargo clippy` (workspace) | `1eb11bde` | pass |
| source policy (`--test observability_source`), fmt, buzz-db clippy |
`c5a06a82` | 17/17, pass, pass |
| `cargo test --locked -p buzz-db` (non-PG) | `c5a06a82` | 148 lib + 17
policy + 5 doctests |
| source policy (`--test observability_source`) | `fbc9a598` | 16/16 |
| `cargo test --locked -p buzz-db` (non-PG) | `fbc9a598` | 148 lib + 16
policy + 5 doctests |
| contract suite (`store::event_follow_up_postgres_tests`,
desired/migration × dual/app-only) | `1eb11bde` | 4/4 |
| buzz-db PG full | `1eb11bde` | 464/464 |
| buzz-relay PG | `1eb11bde` | 378/378 |
| GitHub CI | `fbc9a598` | 53 pass, 0 fail (Codex security review
pending) |

**Falsifications** (each mutation made the named test fail, then was
reverted):
- dropping the `relay_members` hook → policy names
`publish_nip43_membership_locked`
- no-op push producer → app-only arms fail, dual arms pass (trigger
covers)
- skipping the TTL refresh → app-only fails on the deadline; dual fails
on the failure-metric assertion
- swallowing `57014` → all four arms fail
- dropping the metric increment → all four arms fail
- unanchored `#[cfg(test)]` match, or no escape handling → fixture test
fails
- a `#[cfg(test)]` constructor that skips admission, added inside `impl
AdmittedTx` (indented or as a column-0 `mod`) →
`admitted_tx_is_constructed_only_by_admitting_constructors` fails;
putting the strip back into the constructor scan → its fixture test
fails
- at `7c0baa41`: `accept_lease_event`'s hook commented out and the real
call made through an alias → policy names `accept_lease_event` (the same
mutation passes under the `fbc9a598` policy); hook matching on unmasked
text → the comment/string fixtures fail
- at `9199992c`/`d405b2f6`: no nested block-comment depth, no
string-escape skip, no `br"`/`cr"` raw-literal prefix, or no raw-string
branch at all in the masker → the follow-up fixture test fails
- at `c5a06a82`: finding `#[cfg(test)]` in the unmasked text →
`writer_after_block_commented_cfg_test` is no longer reported; finding
`fn` signatures in the unmasked text → `writer_after_raw_string_example`
is no longer reported; no `cr` raw prefix → the masker table test fails
on `cr"`
- unhooked writers appended to `side_effects.rs` (after test-only items,
under a doc-comment mention, with an escaped newline) → policy names
each

**Live relay E2E**: an independent reviewer ran this at `1eb11bde`
against a real relay and CLI, with PostgreSQL 17 and Redis 7, the
follow-up triggers absent, and no partition clones.
- A kind 9 on a TTL channel advanced the shortened deadline by about 580
s. On a permanent channel, the deadline stayed NULL.
- Each accepted event produced exactly one pending `push_match_queue`
row with the same event id.
- An exact signed replay was a no-op.
- While the exclusive TTL lock was held, the event and its job stayed
invisible and the deadline didn't change. After release, both persisted
once.
- Roster create/join/add/remove kept SQL and wire state in step
(1→2→3→2), with one current 39002 head.
- NIP-33 replace, duplicate, stale, failure and retry cases all passed.

Limits: the push lease was a SQL fixture, and push consumers were
disabled. Kind 30023 is global, so channel-scoped TTL on the
parameterized path is covered only by the PG contracts. No live relay
rerun was done at `fbc9a598`, because that delta is test-only.

**Latency** (measured at pre-rebase `f8380927`, same production delta;
debug build on loopback, 1,000 samples per cell, EVENT→OK): head
app-only p50/p99 3.80/4.58 ms (permanent) and 3.87/4.64 ms (TTL),
against base trigger-only 3.49–3.53/4.00–4.03 ms and 3.56–3.62/4.30–4.46
ms. About +0.3 ms p50, from the extra client round trips (lock, UPDATE,
savepoints, push lock/insert) that the triggers ran server-side. One
debug loopback run, not a production p99.

Not measured: contention from many writers on one hot TTL channel, where
each writer now waits on the channel row lock for about two more client
round trips (RELEASE SAVEPOINT and COMMIT) than with the trigger. In
review, a burst of 8 concurrent posts to one TTL channel committed with
no deadlock or lock timeout. Watch send p99 and `pg_locks` waits on
`channels` during rollout.

**Known pre-existing, not touched here:**
`api::mesh_demo::tests::demo_join_forwarded_arm_round_trips_echo` is
flaky when Redis is present. It returns a 504 in 4 of 5 runs at base
`745501962` and 2 of 5 at `fbc9a598`, always at the same assertion. No
CI lane selects it.

---------

Signed-off-by: Elrond <28d6302a099e5225b02c4155ac4236e4912603df2ab08dbfc2f4fef08ce598c8@buzz.block.builderlab.xyz>
Co-authored-by: Elrond <28d6302a099e5225b02c4155ac4236e4912603df2ab08dbfc2f4fef08ce598c8@buzz.block.builderlab.xyz>
2026-10-09 12:33:31 -04:00
Luke Tornquist
f8bf2c529c refactor(db): type-level admitted event-write transactions (AdmittedTx) (#8130) 2026-10-08 08:47:07 -04:00
Luke Tornquist
da651ad672 buzz-db: purge retention-free deletions in the app and index mentions in the event transaction (#8128)
## Summary

Part 1a of removing database objects that exist only in migrations. This
PR moves into the app the work two migration-only triggers do today. It
doesn't drop anything.

On migration-built databases (production), `purge_soft_deleted_nip_rs`
(0009/0011) and `purge_soft_deleted_buzz_mesh_status` (0019) turn a
NIP-09 soft delete of a NIP-RS read-state event (kind 30078) or a
mesh-status heartbeat (kind 30003) into a hard delete, and delete its
mentions. `schema/schema.sql` has neither trigger, so on desired-state
databases (CI) those rows remain as soft-deleted. The two schemas behave
differently today.

Changes:
- `soft_delete_by_coordinate` and
`soft_delete_event_and_update_thread_in_tx` now hard-delete matching
NIP-RS and mesh-status rows and their `event_mentions` rows in the same
transaction, before the generic soft delete. The classification
predicate is the same one the 0011 and 0019 triggers use.
- `insert_event_with_serving_write_guard` now indexes mentions inside
the event transaction, under a savepoint, instead of after commit. A
mention failure still only logs a warning. A concurrent deletion can no
longer leave a mention row behind, and `guard_event_mention_live` will
no longer be needed. The other post-commit `insert_mentions` callers
write kinds 48101 and 13534 and a test helper, never 30078.
- Both soft-delete `UPDATE`s exclude the same predicate (`AND NOT
COALESCE(..., false)`). A retention-free row is either purged or left
live, never soft-deleted, even when a replacement races the deletion
under READ COMMITTED. The purge runs only for kinds 30078 and 30003.
- While the 0011 hard-delete fence is still installed, the purge sets
the transaction-local `buzz.nip_rs_hard_delete` opt-in. 1b removes it,
along with the fence.

**Rollout:** the triggers stay in place on purpose. Pods still running
N-1 during a deploy depend on them. A follow-up (1b) will add a
migration that drops the 5 functions and 5 triggers, remove the
`buzz.nip_rs_hard_delete` opt-in code, and add the catalog-parity test.
1b should merge only after this PR is deployed everywhere.

**What got simpler:** once 1b lands, NIP-RS and mesh deletion will
follow one rule owned by the app, the same on both schemas, and the
hidden trigger work will be gone. This PR adds about 130 lines to
`event.rs`. A known gap for 1b: the replace path's Rust mesh classifier
is stricter than the SQL predicate, and 1b has to make one of them
authoritative before the triggers are dropped. 1b will then delete 5
triggers and 5 functions, plus the opt-in plumbing in `replaceable.rs`
and `deletion.rs`.

### Related issue

BUZZ-175, BUZZ-177 (Linear).

### Testing

Blox, head `a2dac90646ca64fb3f961ffda292e3da976deffc`:
- `cargo fmt --check`, `clippy -D warnings` (`buzz-db`, `buzz-relay`),
and test discovery: all pass.
- New tests: 4 of 4 pass.
- `nip09_deletion_purges_retention_free_rows_and_mentions`,
desired-state and `migration_schema_` variants. On the migration schema,
a 13-shape table checks that the app and the triggers classify each
shape the same way. A separate case covers a mesh row with a NULL
`d_tag`.
-
`coordinate_deletion_racing_nip_rs_replacement_never_soft_deletes_read_state`,
a deterministic lock interleaving.
- `serving_write_guard_insert_indexes_mentions_in_event_transaction`:
mentions are indexed in the event's own transaction (checked via
`xmin`), and a mention failure leaves the event live.
- Falsification: the race test fails against the pre-fix `event.rs`. The
mention test fails with the merge-base post-commit `runtime/mod.rs`.
Both NULL-`d_tag` variants fail with `COALESCE` removed.
- `buzz-db` PostgreSQL lane (`scripts/postgres-test-run.sh -p buzz-db
--lib --tests`): **409 of 409 passed** in an unscoped run. One box hangs
on `writer_pool_rejects_non_read_committed_database_default` (an
environment issue; it also hangs there at merge-base), and there 408 of
408 others passed.
- E2E against a real relay on both schemas: 18 of 18 signed deletion
cases, the serving-write mention path (success, pre-commit invisibility,
isolated failure, recovery), and browser mention, send, reload and
delete.
- CI at `a2dac906`: all checks pass. The `PostgreSQL Tests` lane needed
one rerun: the first attempt hit a known flaky test,
`replica_fence::sample_writer_waits_for_shared_floor_lock_before_sampling_time`,
which fails the same way on `main` at `001290a34`.

buzz-review-completed (agent review and agent E2E complete; human test
waived by Luke Tornquist)

---------

Signed-off-by: Elrond <28d6302a099e5225b02c4155ac4236e4912603df2ab08dbfc2f4fef08ce598c8@buzz.block.builderlab.xyz>
Co-authored-by: Elrond <28d6302a099e5225b02c4155ac4236e4912603df2ab08dbfc2f4fef08ce598c8@buzz.block.builderlab.xyz>
2026-10-07 10:26:39 -04:00
Luke Tornquist
d0fd96fca6 BUZZ-175: Route serving event writes through the tenant lock (#7828)
## Summary

Route every serving event write through one community-admitted
transaction entry point. `Db::begin_event_write_transaction(community)`
is now the only `Db` constructor for event-write transactions: it takes
the shared community admission lock before returning, so callers that
use it cannot take domain or row locks ahead of tenant admission, and a
quiescing community rejects the write at entry. Database triggers and
commit-time fences remain the authoritative backstop.

This migrates normal, replaceable, roster, relay membership, reaction,
reminder, admin-delete, push-owned, artifact-accept, huddle-join
(48101), workflow-deletion, and command-executor event writes. Coupled
mention writes stay in the same transaction; pool-level
`insert_mentions` now opens its own admitted transaction.

**Review fixes (since `950d5f6`):**
- The unguarded event-write constructor is gone. Removed with it: the
deprecated `begin_transaction` alias, the test-only replica-floor
constructor, and `begin_community_write_transaction` (now identical to
the single constructor). Artifact accept, the huddle join, and both
workflow-deletion paths now admit before any domain or row lock;
`persist_command_event` no longer hand-rolls `guard_transaction`;
read-only `query_artifacts` no longer opens an event-write transaction.
- `insert_channel_head_checked` is now `insert_canvas_head_checked`: it
rejects non-canvas kinds before opening a transaction and always takes
the coordinate lock.
- Source policy now also scans `buzz-relay`: any function that hands a
transaction to an event-write helper must have opened it through the
admitted constructor. The scan drops each `#[cfg(test)]` item instead of
stopping at the first one: it tracks brace depth and ends the item on a
line ending in `;` or `}` (ignoring a trailing `//` comment, even after
a string that contains `//`), with a column-0 `}` as fallback. Fixtures
pin a unit struct, a multi-line static, a `const { … }` block, a struct
with fields, a module, and one-line items with trailing comments,
including after `"https://…"` and `"ws://…"` strings; a raw opener after
each must still be flagged. Known limit: braces inside string or char
literals or comments are still counted, and only `//` trailing comments
are recognized, so a test-only item with unbalanced braces in a literal
or comment, or with a trailing `/* */`, would hide what follows; none
exists today. The scan checks that admission is present; the per-path
PostgreSQL tests pin that it comes before domain locks.
- `just test-unit` (and the non-nextest fallback in
`scripts/run-tests.sh`) now runs `buzz-db --test observability_source`.
Before this, no CI job ran these source-policy tests: the unit lane ran
`buzz-db --lib` only and the PostgreSQL lane runs only ignored tests.
- Renamed or removed since `950d5f6`: `begin_transaction`,
`begin_community_write_transaction`, and the replica-floor test
constructor are gone; `insert_channel_head_checked` →
`insert_canvas_head_checked`; test helper `quiesce_community_for_tests`
now delegates to `main`'s `set_deletion_state`, which reads the real
`deletion_fence_generation` instead of hard-coding `'0'`;
`runtime::insert_mentions` is pinned to the admitted constructor by
`pool_level_insert_mentions_opens_the_tenant_local_chokepoint`.

**What got simpler:** four transaction constructors collapse to one, and
the hand-rolled admission guard is deleted. The compiler rejects callers
of the removed constructors, but a transaction opened from `Db::pool()`
can still reach the public `*_in_transaction` helpers; only the
source-policy scan and the database fences catch that until BUZZ-254.

**Behavior note:** #7932 made `insert_event` skip the transaction for
kinds that are not listener mentions. Every serving event write now has
to run in a transaction that holds the community admission lock, so
`insert_event` always opens the admitted transaction again. `main`'s
`soft_delete_event_and_update_thread` / `_in_tx` split and its
removal-marker guard are kept; the outer function now opens the admitted
transaction.

### Related issue

[BUZZ-175](https://linear.app/squareup/issue/BUZZ-175). Caller-migration
stage following #7706 (merged); rebased onto `main` at `5173fad66`.
Follow-up: [BUZZ-254](https://linear.app/squareup/issue/BUZZ-254) makes
event-write helpers require a type-level admitted transaction.

**Known debt, out of scope:** `create_channel`, `update_channel`, and
`insert_thread_metadata` write channel and thread rows (not events)
outside the admitted constructor.

### Testing

At `efe4a94623dd69973780a3c39f16dd972cf7cb76` on a cloud workstation:
fmt; `buzz-db` clippy (all targets, `-D warnings`);
`observability_source` 14/14; `just --dry-run test-unit` includes the
new step. Reverting just the end-of-item check to an earlier rule makes
a trailing-comment fixture fail.

At `eaf190ae59d1595741c3d19dc4c23ce492b5f4d4` (the commit after it only
changes this test file, `Justfile`, and `scripts/run-tests.sh`): full
GitHub CI green; on the workstation, clippy for `buzz-db` and
`buzz-relay`, ordinary `buzz-db` 154/154, `just test-unit` green, and
the PostgreSQL lane 805 of 806 (exception below). An end-to-end run
against a local relay and the built desktop app covered artifact accept,
huddle join, and workflow deletion for both a healthy and a quiescing
community, plus p-tag reaction rollback and replay of the same signed
event.

New tests: one fenced-community test per migrated path (artifact accept,
huddle join, both workflow deletions) puts the community into
`quiescing`, holds the lock the path takes next, and asserts rejection
at entry with nothing stored; a DB-free test pins the non-canvas
rejection.

Exceptions:
-
`runtime::postgres_tests::writer_pool_rejects_non_read_committed_database_default`
hangs on that workstation's local Postgres 16 at both this head and an
earlier `main` base, `f0eb5575f` (2/2 runs each). The test, `Db::new`,
and the pool setup are unchanged by this PR, and the test passes in
GitHub CI. Live traces put the hang in the client, not the database: the
1 s acquire timeout stops firing after sqlx's `after_connect` rejection
path under tokio's `current_thread` runtime. No database lock waits were
observed.
- Two `observability_source` assertions were already failing on `main`,
unnoticed because no CI job ran that test binary: a stale
`fetch_optional` pin after #8005, and lease-seam attribution that now
lives in the `bounded_serving_lease_sql` helper. Both are corrected
here, and the binary now runs in `just test-unit`.

Generated with Codex

---------

Signed-off-by: tornquist <tornquist@squareup.com>
Signed-off-by: Elrond <28d6302a099e5225b02c4155ac4236e4912603df2ab08dbfc2f4fef08ce598c8@buzz.block.builderlab.xyz>
Co-authored-by: Codex <noreply@openai.com>
Co-authored-by: Elrond <28d6302a099e5225b02c4155ac4236e4912603df2ab08dbfc2f4fef08ce598c8@buzz.block.builderlab.xyz>
2026-10-06 10:24:41 -04:00
ravarora2
91ab9d31b8 Add operation-aware database pool acquisition metrics (#7195)
## Why

Buzz already reports coarse writer/reader database checkout waits, but
those
signals cannot explain which startup or serving operation is blocked by
pool
pressure. That makes rollout diagnosis and postmortems ambiguous: a
readiness
probe, NIP-42 authentication, authorization check, reconnect history
repair,
event write, and background maintenance can all wait on the same pool
while
appearing identical.

This PR implements Package 2A of the pod-handoff plan: operation-aware
pool
borrow causality. It is observability-only; it does not change
configured pool
sizes, SQL semantics, transaction ordering, or timeout policy. Physical
DNS/TCP/TLS/Postgres authentication and session initialization remain
the
separate Package 2B boundary.

## Metric contract

The final contract separates three questions:

| Question | Metric |
|---|---|
| How long did checkout wait? |
`buzz_db_pool_acquire_duration_seconds{pool_role,operation}` |
| How did the attempt end? |
`buzz_db_pool_acquire_attempts_total{pool_role,operation,outcome}` |
| Who is waiting now for a tracked operation? |
`buzz_db_pool_waiters{pool_role,operation}` |

Outcomes are `success`, `timeout`, `error`, and `cancelled`. Operations
are
`bootstrap`, `readiness`, `tenant_resolution`, `authentication`,
`authorization`, `subscription_history`, `event_write`, and
`maintenance`.

Only these eleven pool/operation pairs are constructible:

```text
writer/bootstrap                 reader/bootstrap
writer/readiness
writer/tenant_resolution
writer/authentication
writer/authorization             reader/authorization
writer/subscription_history      reader/subscription_history
writer/event_write
writer/maintenance
```

The duration histogram intentionally does not carry `outcome`. Result
data
remains available on the terminal counter for historical counts and
rates,
without multiplying the expensive histogram family. Nine finite buckets
plus
`+Inf`, sum, and count produce 12 duration series per valid pair.
Together with
four outcome counters and one waiter gauge, the new-family ceiling is
exactly
187 raw Prometheus series per pod, asserted from the production
exporter.

The existing coarse acquisition families remain temporarily for
dashboard
compatibility while the new series are validated in staging.

The operation-specific waiter family covers the explicitly routed,
deployment-critical operations above; it is not a census of every
possible
SQLx checkout in the process. The dashboard pairs it with SQLx pool
active/idle/max gauges for whole-pool capacity context, and treats a
missing
operation series as unknown rather than healthy zero.

## What changed

### Cancellation-safe acquisition ownership

- Add writer- and reader-specific typed operation APIs so invalid label
pairs
  cannot be constructed and store modules cannot emit reader labels.
- Own every polled acquisition with one RAII terminal guard.
- Record exactly one duration and terminal outcome for success, timeout,
error,
  or cancellation.
- Emit nothing for a future that is created but never polled.
- Balance the operation-specific waiter count exactly once on every
terminal or
  dropped future.
- Periodically refresh every expected waiter pair, including healthy
zero, so
missing telemetry is not presented as zero. Reader pairs are emitted
only
when a distinct read pool is configured; a writer-only pod cannot
fabricate
  healthy reader-zero state.

### Production attribution

Route the deployment-critical acquisition paths through caller-owned
semantic
entry points, including:

- writer and reader bootstrap;
- the real post-#7149 readiness acquisition and deletion-catalog
validation;
- tenant resolution and community lifecycle checks;
- NIP-42 allowlist authentication;
- membership, moderation, invite, operator, Git, agent-owner, and policy
  authorization;
- operator community create/list/archive/unarchive, reverse host/channel
tenant
  resolution, and REQ row-community conformance lookups;
- writer/reader subscription history, feed, thread, and routed fallback
paths;
- primary and command event writes, replaceable events, mention
indexing,
  reaction/channel/member/archive side effects, and thread metadata;
- push matching, usage rollups/leadership, replica-fence startup and
recurring
probes, periodic reconciliation, channel/deletion reapers, partitions,
and
  other bounded maintenance/bootstrap paths.

Shared helpers now accept caller-owned intent or expose named semantic
variants
instead of assigning one misleading operation to every caller. No known
P0 path
uses `other`.

### Readiness and size-one-pool correctness

- Rebase on the post-#7149 readiness implementation and instrument the
actual
`Db::readiness_check` acquisition rather than the superseded ping-only
seam.
- Acquire once for deletion-catalog validation and run its queries on
that
  connection, preserving the shared readiness deadline.
- Scope the channel-roster catalog checkout before the behavior probe so
a
  size-one writer pool cannot self-deadlock during startup verification.

### Exporter, documentation, and CI

- Register metric HELP/type/unit metadata through the production
Prometheus
  builder.
- Configure dedicated checkout buckets at 1ms, 5ms, 10ms, 25ms, 50ms,
150ms,
  500ms, 1s, and 3s.
- Add a production scrape-contract test for exact names, labels,
buckets,
  valid pairs, sensitive-label exclusion, and the 187-series ceiling.
- Add source mutation guards for the P0 semantic entry points and
raw-checkout
  bypasses.
- Add an exact backend-integration CI selector for the production
attribution,
  cancellation, readiness, and size-one-pool PostgreSQL tests.
- Document the frozen label vocabulary, valid combinations, semantics,
and
  cardinality budget in the Helm chart README.

## Dashboard intent

The new Stage 2 row in **Buzz Startup & Rollout Safety** is
deployment-first:

- baseline-versus-candidate attempts, failure rates, cancellation rates,
and
  maximum wait by operation;
- outcome counts and percentages over time by SHA/ReplicaSet;
- acquisition wait heatmap, average, and maximum through the rollout;
- historical waiter pressure beside writer active/idle/max context;
- per-pod postmortem drilldown, including terminated pods;
- a smaller current-waiter table with explicit stale/missing semantics.

Percentile widgets remain disabled until Datadog metadata confirms
percentile
support for the new distribution. Current gauges use no fill,
interpolation, or
`default_zero`; missing means unknown.

## Risk assessment

Moderate. The patch touches many database acquisition call sites, but
preserves
the selected physical pool and executes the same SQL on the acquired
connection. The main risks are incorrect semantic attribution,
cancellation
double-counting, and a helper accidentally acquiring twice. Typed APIs,
production-method PostgreSQL tests, source guards, the raw scrape
contract, and
the size-one-pool regression cover those risks.

No tenant, community, user, pubkey, event, channel, SQL, URL, pod,
version,
ReplicaSet, or request-controlled value is emitted as an application
metric
label. Deployment identity is supplied by infrastructure enrichment.

## Verification

- `cargo fmt --all -- --check` — passed.
- `cargo clippy -p buzz-db -p buzz-relay --all-targets --all-features --
-D warnings`
  — passed.
- `cargo test -p buzz-db` — 122 passed, 0 failed, 263 ignored;
  source-contract integration test: 3 passed, 0 failed.
- Focused relay compatibility, metric-contract, and readiness tests —
passed.
- `scripts/test-postgres-test-discovery.sh` — passed.
- Full `buzz-relay` package run from the identical tree reached 1,015
passes;
the six media-test failures all stopped in their shared local PostgreSQL
setup with `Sqlx(PoolTimedOut)` because Docker/PostgreSQL was
unavailable.
The same six failed in isolation, while every changed exact test passed.
- Exact implementation head:
  `f92910b353086e9edf85918ca5f72190edbbe22f`.
- Exact multi-architecture staging image:
  `dev-sha-f92910b353086e9edf85918ca5f72190edbbe22f-run-33607968668-1`

(`sha256:161712c8ed2e265a15df9b63e02248d5973481f875ff129d7d2ae78a09d487a2`).
- Focused staging GitOps PR:

<https://github.com/squareup/builderbot-platform-core-infrastructure/pull/299>
— merged after renderer, inventory, infrastructure test, Kargo, Semgrep,
and
Intersect gates passed; the source/generated-artifact diff was exactly
two
  image lines.
- Exact GitHub head reports 47 terminal checks: 35 successful and 12
  intentionally skipped. PostgreSQL, unit, lint, security, both server
cross-compiles, backend integration, relay E2E, desktop, mobile, image,
  Helm, Semgrep, zizmor, and DCO gates are green.
- Datadog readback identifies two exact-image pods,
  `buzz-d79c8d8f7-ckv2l` and `buzz-d79c8d8f7-qzqdp`, in ReplicaSet
  `buzz-d79c8d8f7`; both report the full source SHA above.
- Both pods report all eleven allowed pool/operation waiter pairs at
current
zero, with no invalid pair. The acceptance window observed nonzero
success
  receipts for readiness, tenant resolution, authorization, subscription
history, event write, and maintenance, and no timeout, error, or
cancelled
outcome. Maximum observed wait was about 101 ms for maintenance and 50
ms
  for reader subscription history.

The main **Buzz Startup & Rollout Safety** dashboard now has a live
Stage 2
database row with eight widgets and nineteen fully scoped queries. Final
readback preserved all seven top-level groups, found zero under-scoped
Row 6
queries, and confirmed the tracked-operation waiter boundary in the
panel
descriptions.

Generated with Codex.

---------

Signed-off-by: Ravneet Arora <rarora@squareup.com>
2026-09-02 17:04:34 -04:00
Luke Tornquist
bd73490418 ci: run PostgreSQL tests in isolated lane (#6730)
## Why

PR #6660 introduced four PostgreSQL-backed persistence tests and a
focused CI selector, but an exact test-name list does not automatically
cover future database tests. Broad ignored-test execution also exposed
shared-schema races and ambiguity between desired-state and
migration-applied schema expectations.

## What

- Establish a discoverable convention: PostgreSQL unit modules use
`postgres_tests`, PostgreSQL integration binaries use a `postgres_`
prefix, and unrelated external-infrastructure tests use an
`external_infra_` prefix.
- Add a dedicated nextest PostgreSQL profile and archive-backed CI job
covering the relevant crates without enumerating test names.
- Create a run-scoped desired-state source database and a unique
PostgreSQL database per test process for parallel-safe isolation, with
cleanup on success, failure, or interruption.
- Route destructive migration and migration-parity tests to clean
`template0` databases while desired-state tests clone the desired-state
database.
- Document discovery, schema modes, required role privileges, and a
bounded portable local runner.
- Keep the existing infrastructure-free unit-test jobs unchanged.

This is intentionally limited to test and CI harness behavior. It does
not move production database code, change persistence semantics, or
implement issue #20's broader shared test-utility refactor.

## Risk

Low production risk because all changes are confined to tests, CI
configuration, documentation, and test harness scripts.

Remaining operational risks:

- Cleanup retries `dropdb --force` five times across roughly four
seconds. Exhaustion warns with the database name but deliberately does
not mask the test result; individual PostgreSQL diagnostics are
suppressed.
- The seven-package boundary is duplicated between the runner and CI
archive and must remain synchronized if PostgreSQL tests move to a new
crate.
- Portable SHA fallback branches were exercised on Linux; no macOS Blox
workstation was needed for this Linux CI artifact.
- GitHub's unchanged generic Unit Tests job currently fails while
cold-linking `buzz-voice` because `sherpa-onnx-c-api` is absent. The
branch changes no voice/build/toolchain inputs; the exact parent
previously passed that job, and Blox passes the same infrastructure-free
suite (1,450/1,450). A prior-head one-job retry and the final-head run
both reproduced the hosted-runner failure.

## Verification

Author Blox workstation `2020088`:

- `cargo fmt --all -- --check`
- `just clippy`
- `just test-unit`: 1,450 passed; PostgreSQL tests remain skipped in
fast jobs
- PR #6660 focused tests: 4/4 passed through the final runner
- Full lane: 282/282 passed in 10.087s with a non-superuser role limited
to `CREATEDB`, `CREATEROLE`, and `pg_read_all_stats`
  - 272 desired-state tests
  - 10 migration-applied tests
  - 6 explicitly filtered external-infrastructure tests
- Cleanup fault injection: a deliberately underprivileged 282-test run
produced the expected 277 passes and 5 failures, and the post-run
catalog audit found zero lane databases after retry cleanup. The
restored successful run also left zero lane databases.

GitHub exact final head `92c231e48f299ea2af23817763f5ae80ac013d68`:

- [PostgreSQL
Tests](https://github.com/block/buzz/actions/runs/32789030203/job/97630827823):
282/282 passed across 10 binaries in 98.886s; 1,240 skipped, including 6
via the profile filter
- The shared relay/PostgreSQL archive predecessor completed successfully
- [Unit
Tests](https://github.com/block/buzz/actions/runs/32789030203/job/97626930420):
unrelated `sherpa-onnx-c-api` native-link failure described above
- Independent exact-head review on separate Blox workstation `2022762`:
no substantive findings after all initial findings were addressed. The
reviewer independently verified cleanup retry behavior, exit-status
preservation, shell portability, syntax, and a clean exact-head
worktree.

## References

- Stacked on #6660 at exact head
`561de54be4d9c2b622b7c2aa5b61bc3068f47e2a`
- https://github.com/TheSentinel454/buzz/issues/20
-
https://github.com/TheSentinel454/buzz/issues/20#issuecomment-5398526792

Generated with Codex.

## Update — August 24, 2026 review follow-up

- Centralized the repeated PostgreSQL test URL resolution in
crate-local, test-only helpers without introducing the broader shared
utility refactor from issue #20.
- Restored descriptive hybrid/Redis test function names. Structural
`external_infra_*_tests` modules now own exclusion, and the nextest
filter only recognizes module path segments.
- Added a three-second source guard that scans every Rust file and fails
CI when an ignored PostgreSQL test would be omitted or an
external-infrastructure test would be included. Fixture tests cover
accepted modules/binaries and both failure modes.
- Removed the two implementation-plan documents.

Performance profiling on Blox workstation `2027352` (same prebuilt
archive and cargo-nextest 0.9.143 for every comparison):

- Current per-test database model, 8 workers: 10.15–10.40s across three
runs. The 283 `createdb` calls and 284 `dropdb` calls consumed
28.85–29.46 aggregate seconds, about 39–40% of aggregate test-process
duration.
- Reusing one database per worker without cleanup: 6.55–6.84s, about 35%
faster, but all three runs failed because global matcher-queue tests
inherited a quiesced community from an earlier test; the failing test
varied with scheduling.
- Reusing workers with `TRUNCATE … RESTART IDENTITY CASCADE`: all 282
tests passed, but total time regressed to 10.47–10.67s. The 265 truncate
calls consumed 24.34–25.45 aggregate seconds, so truncation merely
replaced most clone/drop cost.
- Raising concurrency to 16 workers reduced one isolated-database run to
8.79s, but 24 workers exposed a cluster-global `pg_stat_activity` race.
The profile remains at the proven-safe 8 workers.

Decision: retain unique per-test databases. Harness cleanup uses `dropdb
--if-exists --force`; it drops the database rather than truncating
tables or deleting rows.

Verification at local branch head
`60086c1f6ee34a193c342255a5e8e6293b60e988`:

- Discovery inventory: exactly 282 intended tests; all 6 hybrid/Redis
tests present and structurally excluded.
- PR #6660 focused persistence tests: 4/4 passed.
- Full PostgreSQL lane: 282/282 passed three times; 1,240 skipped each
run; wall time 9.72–9.96s without profiling shims.
- Non-ignored tests with a desired-state database: 1,234/1,234 passed;
one mesh-demo timeout from the first run passed immediately in
isolation.
- `cargo fmt --all -- --check` and all-target/all-feature clippy for
`buzz-db`, `buzz-deletion`, and `buzz-relay` passed.

Final independent re-review at exact head
`42097c0136ab3fa8f0efe5720ae829c04575b9b6` on separate Blox workstation
`2028455`: no substantive residual findings. The reviewer independently
exercised ordinary strings, zero/one/three-hash raw strings, line/block
comments, and string-contained lookalikes, then reran the full 353-file
scan, shell syntax, Python AST parsing, and diff check.

Independent review found that the source guard's initial regular
expression could miss raw-string ignore reasons and treat a commented
attribute as real. Final head `42097c0136ab3fa8f0efe5720ae829c04575b9b6`
parses valid ordinary/raw Rust string literals only at attributes found
in comment-sanitized source; regression fixtures cover both cases. The
fixture suite, Python compilation, shell syntax, diff check, and full
353-file repository scan pass on Blox.

## Update — August 25, 2026 restack

PR #6660 merged, so this follow-up was rebased from its former exact
parent onto current `origin/main`
(`8d2d0ff5ad42733e9949442c4b6358d0ba87f9a8`). The final candidate head
is `05dcc2ab28948e3ab79bb44839a69f2ba44648a2`; the PR no longer carries
#6660's pre-squash history.

Fresh exact-head verification on Blox workstation `2028572`:

- Discovery guard passed across 353 Rust files; inventory remained
exactly 282 intended PostgreSQL tests.
- PR #6660 focused persistence tests: 4/4 passed.
- Full PostgreSQL lane: 282/282 passed three times; 1,243 skipped each
run; wall time 9.70–9.87s.
- `cargo fmt --all -- --check` and all-target/all-feature clippy for
`buzz-db`, `buzz-deletion`, and `buzz-relay` passed.

## Update — August 25, 2026 final hosted verification

- [GitHub PostgreSQL
Tests](https://github.com/block/buzz/actions/runs/32801679226/job/97667835080):
282/282 passed in 53.787s; 1,243 skipped.
- The final guard scanned all 353 Rust files successfully before the
hosted lane ran.
- The shared relay/archive prerequisite and infrastructure-free Unit
Tests job both passed at exact final head
`42097c0136ab3fa8f0efe5720ae829c04575b9b6`.

---------

Signed-off-by: Luke Tornquist <tornquist@squareup.com>
Signed-off-by: tornquist <tornquist@squareup.com>
2026-09-01 12:07:28 -04:00
Luke Tornquist
a3730784fc refactor(db): extract domain stores from database runtime (#6987)
## Summary

Finish the remaining database-store extraction tracked by
[TheSentinel454/buzz#2](https://github.com/TheSentinel454/buzz/issues/2)
in one reviewable PR.

This consolidates the previously stacked domain slices after #6782
merged. It preserves the runtime/store boundary established by #6660,
#6668, #6700, and #6782 while separating database runtime infrastructure
from domain-owned persistence:

- `runtime/` owns pool construction and sizing, writer/reader routing,
read sessions and route proofs, transaction infrastructure,
observability primitives, replica fencing, health support, migrations,
and cross-cutting runtime tests.
- `store/` owns domain records, SQL, row parsing, locks and invariants,
`Db` domain methods, focused tests, and logical-operation datastore
spans.
- `lib.rs` remains a 57-line compatibility facade that preserves
existing crate-root paths and `Db` method signatures through re-exports.

Domain coverage includes API tokens, authentication allowlists,
reminders, event queries, threads, reactions, feeds, users and DMs,
push, workflows/runs/approvals, relay membership and invites, product
feedback, moderation/admin moderation, relay admin actions/operators,
git repositories, archived identities, usage, partition maintenance,
deletion, channel membership inherited from merged #6782, and the final
runtime/store layout.

The branch has been rebased onto current `main`. Database changes that
landed there were incorporated rather than overwritten:
`relay_admin_actions.rs` and `relay_operators.rs` now live under
`store/`, their 27 public `Db` wrappers and existing behavior remain
intact, and every wrapper has exactly one fixed-name datastore span.
Concurrent changes to migration, moderation, admin moderation, and error
handling are also retained.

### Exact base and head

- Base: `main` at `ed11c8d8bf0a17402be5cf243724f89471530d2f`
- Head: `codex/issue-2-store-extraction` at
`be24430472d1a87ac5c0d6026c620cd6caea3537`

### Related issue

- Structural tracker:
[TheSentinel454/buzz#2](https://github.com/TheSentinel454/buzz/issues/2)
- Domain trackers:
[#6](https://github.com/TheSentinel454/buzz/issues/6),
[#7](https://github.com/TheSentinel454/buzz/issues/7),
[#12](https://github.com/TheSentinel454/buzz/issues/12),
[#13](https://github.com/TheSentinel454/buzz/issues/13)
- Acceptance trackers:
[#17](https://github.com/TheSentinel454/buzz/issues/17),
[#19](https://github.com/TheSentinel454/buzz/issues/19)

This supersedes #6783, #6784, #6787, #6788, #6789, #6792, #6820, #6794,
#6796, #6797, #6798, #6799, #6804, #6805, #6806, #6808, #6809, #6811,
#6812, #6813, #6814, #6815, and #6890. Their discussions remain
available for review history.

### #17 / #19 acceptance

- Preserves the metric names, fixed labels, transaction/lock timing
boundaries, and privacy/cardinality constraints introduced by #6700.
- Keeps exactly one datastore span per public logical operation,
including the 27 relay-admin wrappers added on `main`.
- Removes `store_ownership.rs`; physical ownership and focused source
guards now enforce the boundary directly.
- Leaves no `impl Db`, domain SQL, focused domain test group, or
datastore span in `lib.rs`.
- Preserves existing public paths such as `buzz_db::channel`,
`buzz_db::event`, and `buzz_db::workflow` through crate-root re-exports
while keeping internal `runtime` and `store` namespaces private.

### Non-goals

- No SQL, schema, locking, transaction, retry, timeout, or
client-visible behavior changes.
- No generic store traits, domain handles, broad `PgExecutor` migration,
new store crate, raw pool accessor, or broader directory reorganization.
- No tracker issues are closed by this PR.

### Risk

The cumulative diff is large but structural. Risk is primarily
module-path, ownership, or conflict-resolution drift. It is mitigated by
preserving public re-exports, comparing the newly moved `main`
implementations to their upstream source, source guards, touched-crate
compilation, PostgreSQL-backed test coverage, and an independent
exact-head review on a separate clean Blox workstation.

### Testing

Author workstation `buzz-tornquist-pr-6987-rebase`, rebased branch
ending at exact head `be24430472d1a87ac5c0d6026c620cd6caea3537`:

- `cargo fmt --all --check`
- `cargo clippy -p buzz-db -p buzz-relay --all-targets -- -D warnings`
- `cargo test -p buzz-db --lib` — 113 passed, 240 PostgreSQL tests
intentionally ignored
- `cargo test -p buzz-db --test observability_source` — 2 passed
- PostgreSQL-backed `buzz-db` coverage under native PostgreSQL — 235
passed in the shared serial run; the five shared-state/config-sensitive
cases passed as isolated reruns against fresh schemas, including the two
owner-limit tests with their fixture's
`BUZZ_MAX_COMMUNITIES_PER_OWNER=3`
- `cargo test -p buzz-relay --lib -- --test-threads=1` under native
PostgreSQL/Redis — 991 passed; the three current-month
partition-sensitive identity-archive cases passed after provisioning the
August 2026 test partition; 87 infrastructure-marked tests remained
ignored
- Source/diff guards — relay-admin implementation bodies match current
`main`; all 27 public wrapper signatures are retained; exactly one
datastore span wraps each wrapper; `lib.rs` has zero `impl Db` blocks
and zero datastore spans; no duplicate top-level relay-admin modules or
`store_ownership.rs`; `error.rs` matches current `main`

Independent clean review workstation `buzz-tornquist-pr-6987-review`,
detached at exact head `be24430472d1a87ac5c0d6026c620cd6caea3537`:

- `cargo fmt --all --check`
- `cargo clippy -p buzz-db -p buzz-relay --all-targets -- -D warnings`
- `cargo test -p buzz-db --lib` — 113 passed, 240 ignored
- `cargo test -p buzz-db --test observability_source` — 2 passed
- Exact-head ownership/re-export/instrumentation audit — no remaining
actionable findings

---------

Signed-off-by: OpenAI Codex <codex@openai.com>
Signed-off-by: tornquist <tornquist@squareup.com>
Co-authored-by: OpenAI Codex <codex@openai.com>
2026-08-28 15:24:32 -04:00