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feat(controller-status): add election-time schema fields + ha_state_t (task 7.1)

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Adds CtrlStatus.electedAtMs@14 and HeartbeatMsg.electedAtMs@4 to the
capnp schema, their hand-authored typemap.h counterparts, and a new
ha_state_t.last_known_elected_at_ms field alongside last_known_committed_lsn.
Schema/state plumbing only -- nothing stamps or consumes these fields yet
(tasks 7.2-7.5). Codec round-trip tests confirm both new fields survive
encode/decode unchanged.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01RLSNJhNoULvVcUhXEFafQC
This commit is contained in:
Rongsong Shen 2026-09-16 04:21:02 +00:00
parent 7556856e5c
commit cae1039ed7
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6 changed files with 184 additions and 1 deletions
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src/controller/ha.h
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@ -184,6 +184,17 @@ typedef struct {
sem_t heartbeat_seen; /* Req 1: posted by heartbeat handler during CTRL_INIT */
_Atomic uint64_t last_known_committed_config_tag; /* Req 8: from primary heartbeats */
_Atomic uint64_t committed_config_tag; /* Req 8.1: set on quorum ACK */
/* ── New field added by controller-status spec delta (Req 12, task 7.1) ── */
_Atomic uint64_t last_known_elected_at_ms; /* Currently-known primary's
* election time (epoch ms): self-stamped
* by both promotion roads at the instant
* each commits to CTRL_PRIMARY (task 7.2,
* not yet wired), unconditionally learned
* off-primary via heartbeat (task 7.3, not
* yet wired) -- mirrors last_known_committed_lsn/
* last_known_committed_config_tag above.
* 0/unset at init (ha_init memset) until
* the first promotion or heartbeat. */
/* ── New fields added by election-iomgr-refactor spec (Task 2.1) ── */
void *client_ssl_ctx; /* SSL_CTX* (TLS_client_method); created in myapp_run */
/* ── New field added by raft-drive-async spec (Task 3.1) ──────── */