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feat(ha-repl-hardening): standby snapshot receive handler (task 3.5c)

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ha_handle_snapshot_chunk writes chunks to snap.part, on isLast verifies
total_size, atomic renames to snap-{lsn}.bin, loads via new
persist_load_snapshot wrapper, sets applied_lsn=checkpoint_lsn.
3 tests: 2-chunk assembly, size mismatch, null args. Wired into
myreq_handler OPCode_snapshotTransfer dispatch.
This commit is contained in:
Rongsong Shen 2026-06-05 01:43:05 +00:00
parent 318098c727
commit cbd91fca43
7 changed files with 361 additions and 2 deletions
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6
src/controller/persist.c
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@ -676,6 +676,12 @@ static int load_snapshot(persist_t* p, const char* path, uint64_t lsn)
return 0;
}
/* Public wrapper for load_snapshot — exposed via persist.h for ha.c (Task 3.5c). */
int persist_load_snapshot(persist_t *p, const char *path, uint64_t lsn)
{
return load_snapshot(p, path, lsn);
}
/* P2-2: Standby WAL replay — apply a single replicated entry to in-memory state.
*
* No hooks fire on standbys; the hook system is empty until promotion.