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feat(ha-repl-hardening): populate stateReport in standby heartbeat reply (task 2.3)

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OPCode_nop handler now sends stateReport {applied_lsn, config_tag}
instead of nodata. Function in ha.c for unit-test linkability.
Two tests: warm state and zero-state fresh standby (Req 1.4).
This commit is contained in:
Rongsong Shen 2026-06-04 16:08:11 +00:00
parent 6bbcff62ca
commit 7dc657b1bd
5 changed files with 128 additions and 5 deletions
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16
src/controller/ha.c
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@ -918,6 +918,22 @@ int ha_apply_wal_catchup_entry(ha_state_t *ha, persist_t *p,
return 0;
}
/* ha_nop_reply_state_report — populate *sr from ha state and wire into reply.
* Reads ha->applied_lsn (atomic) and myconf->config_version_tag, stores them
* in *sr, then sets reply_out->data_which = stateReportMsg and
* reply_out->data.state_report = sr.
* Caller keeps *sr alive until xce_reply() serialises the message.
* Requirements: 1.1, 1.3, 1.4 (ha-repl-hardening spec) */
void ha_nop_reply_state_report(ha_state_t *ha, myconf_t *myconf,
state_report_t *sr, xce_reply_t *reply_out)
{
sr->applied_lsn = atomic_load_explicit(&ha->applied_lsn,
memory_order_acquire);
sr->config_tag = myconf ? myconf->config_version_tag : 0;
reply_out->data_which = RequestReply_data_stateReportMsg;
reply_out->data.state_report = sr;
}
/* ── Dispatch gate (req 1.3, 1.4) ──────────────────────────────────────────
*
* Called from myreq_handler() in cluster.c before the opcode switch.