lei.chen/myxce
1
0
Fork 1
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

test(ha-commit-barrier-rollout): RED tests for persist_commit_barrier (task 2.1)

Browse source 
7 cases: two covered short-circuits, timeout with committed_lsn
unmoved, covering-ACK release, sync_timeout_ms fallback (bounded both
directions), n_peers=1 standalone, NOT_READY passthrough via cap
saturation. Watermark resolved to current_lsn - 1 (design's literal
phrasing unsatisfiable per persist.h:71 invariant) with off-by-one
killing power both ways. 15 tests / 7 RED; suite baseline zero.
This commit is contained in:
Rongsong Shen 2026-06-12 05:09:11 +00:00
parent e8ecc87551
commit 611fbc8d7b
6 changed files with 405 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

15
src/include/persist.h
View file

@ -131,6 +131,21 @@ typedef enum {
* ERROR and returns WAL_MODE_RETAIN (never dropped, never confirmed early). */
wal_commit_mode_t wal_classify(uint32_t wal_type, int detail);
/* Commit barrier — handler-callable WAIT completion on everything appended
* so far (ha-commit-barrier-rollout). Snapshots the appended watermark
* (current_lsn - 1, under p->lock — matching persist_wal_sync_append's
* read); returns 0 without blocking when committed_lsn already covers it
* (or nothing was ever appended). Otherwise delegates to
* commit_submit(COMMIT_MODE_WAIT) and returns its code unmodified:
* 0 — committed on a majority
* -ETIMEDOUT — not committed within the deadline (entries remain
* in the log; outcome converges per umbrella 2.5)
* -XCE_ERR_NOT_READY — engine admission cap exhausted (retriable)
* timeout_ms = 0 falls back to p->config.sync_timeout_ms. n_peers <= 1
* returns 0 immediately (engine self-quorum, standalone preserved).
* Call only from vtask threads with no entity locks held. */
int persist_commit_barrier(persist_t* p, uint32_t timeout_ms);
/* Force WAL fdatasync (for tests and clean shutdown) */
int persist_flush(persist_t* p);