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feat(ha-config-bootstrap): implement dispatch gate (task 3.3)

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- errnox.h: add E_XCE_NOT_READY and E_XCE_STANDBY error codes with
  extern int XCE_ERR_NOT_READY / XCE_ERR_STANDBY runtime variables
- ha.h: declare ha_dispatch_gate(ha_state_t *, int opcode)
- ha.c: define XCE_ERR_* variables; initialize heartbeat_seen semaphore
  and primary_ctrl_fd = -1 in ha_init(); sem_destroy in ha_fini();
  implement ha_dispatch_gate() with allowlist for CTRL_INIT/CTRL_ELECTING
  (only OP_requestVote and OP_probeConfigTag pass) and CTRL_STANDBY
  (replication, election, and housekeeping ops pass; primary-only ops
  return -XCE_ERR_STANDBY)
- cluster.c: wire ha_dispatch_gate() in myreq_handler() before opcode
  switch; gate failure sends error reply and returns early

All 393 unit tests pass. Satisfies requirements 1.3 and 1.4.
This commit is contained in:
Rongsong Shen 2026-05-28 05:50:42 +00:00
parent 6272fc8eb2
commit 72776f18ff
5 changed files with 106 additions and 1 deletions
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.kiro/specs/ha-config-bootstrap/tasks.md
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@ -68,7 +68,7 @@ Dependency order: startup validation (D) unblocks vtaskmgr before election (A);
- _Requirements: 1.1, 1.2_
- _Boundary: Startup Sequence (cluster.c, myapp.c)_
- [ ] 3.3 Implement dispatch gate for CTRL_INIT and CTRL_ELECTING states
- [x] 3.3 Implement dispatch gate for CTRL_INIT and CTRL_ELECTING states
- Initialize `ha.heartbeat_seen` semaphore in `ha_init()`; initialize `ha.primary_ctrl_fd = -1`
- Add role-check at vtaskmgr dispatch entry: `CTRL_INIT` and `CTRL_ELECTING` pass only `OP_requestVote` and `OP_probeConfigTag`; all others return `XCE_ERR_NOT_READY`
- `CTRL_STANDBY` returns `XCE_ERR_STANDBY` with `redirect_host/port` for primary-only ops