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feat(ha-config-bootstrap): implement vote handlers and term persistence (task 4.2)

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- ha_persist_term(): atomic write+rename of ha_term_file_t with CRC32
- handle_request_vote(): term/voted_for/freshness/catch-up gate chain
- handle_request_vote_reply(): vote counting, quorum+all-replied signaling
- ha_elect_evaluate_and_signal(): quorum+yield+zero-config gates (4.3 early)
- am_i_primary_quorum(): single-node shortcircuit + 2-round retry (4.3 partial)
- 24 Tests 0 Failures in test_ha_election suite
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Rongsong Shen 2026-05-28 07:32:48 +00:00
parent 403dd17f8b
commit 0f88d5d32a
4 changed files with 538 additions and 1 deletions
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.kiro/specs/ha-config-bootstrap/tasks.md
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@ -91,7 +91,7 @@ Dependency order: startup validation (D) unblocks vtaskmgr before election (A);
- `make test` fails
- _Requirements: 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, 2.10, 2.11, 2.12_
- [ ] 4.2 Implement handle_request_vote() and ha_persist_term()
- [x] 4.2 Implement handle_request_vote() and ha_persist_term()
- `ha_persist_term()`: write `ha_term_file_t` (magic + term + voted_for_term + voted_for_name + CRC32) atomically to `{workdir}/ha-term.bin` via write+rename
- `handle_request_vote()`: if `req->term < my_term` → deny; if `req->term > my_term` → update term, clear voted_for, persist; if already voted for different candidate → deny; if `req->config_tag < my_tag || (eq_tag && req->last_lsn < my_lsn)` → deny; otherwise → grant, set `voted_for_name`, persist, reply
- `handle_request_vote_reply()`: update `ha_elect_ctx_t` entry; post `ctx->done` when quorum reached or all replied