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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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src/include/persist.h
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@ -152,6 +152,11 @@ int persist_worker_hook_fun(int type, int situation, int detail,
* negative errno on error (oversized payload, NULL arguments). */
int apply_wal_entry(persist_t* p, const wal_entry_hdr_t* hdr, const void* payload);
/* Load a snapshot file from path, set p->checkpoint_lsn and p->current_lsn.
* lsn hint is informational — the actual LSN is read from the file header.
* Returns 0 on success, -errno or -EINVAL/-EIO on error. */
int persist_load_snapshot(persist_t* p, const char* path, uint64_t lsn);
/* GC retention predicates (P0-5a / P0-8 / P0-13) */
#include <stdbool.h>
#include "xce/types.h"