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test(ha-commit-barrier-rollout): RED tests for config barrier (task 5.1)

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6 RED carriers pinning the three configAck defects (previous-tag acks
count, n_active==0 success shortcut, no-self-count denominator) and the
push/upgrade failure path (logged-only result, unconditional success
ACK + restart). 2 sanctioned pins (single-member, success-unchanged).
Behavior-preserving signature change: push_config_to_standbys gains
acked_out (return still legacy push count; 7 call sites NULL'd,
body-diff verified). 29/6 in group; no collateral failures.
This commit is contained in:
Rongsong Shen 2026-06-12 16:31:42 +00:00
parent 732e836868
commit 9cdeba5816
9 changed files with 582 additions and 19 deletions
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7
src/controller/config_repl.h
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@ -112,12 +112,17 @@ int handle_repl_config_push(cluster_t *c, endpoint_t *ep, xce_request_t *req);
* push_config_to_standbys: fan-out a new config blob to all connected standby
* controllers in parallel. Best-effort — standbys that miss the push will
* pull on reconnect via handle_config_request().
* acked_out (may be NULL): receives the number of standbys that successfully
* received the push at the transport level (per-standby push count).
* Returns the number of standbys that successfully received the push.
* (ha-commit-barrier-rollout task 5.2 moves the majority-ACK barrier result
* into the return value; the push count is then only available via acked_out.)
* Only meaningful when CONF_ENABLE_UPGRADE_CONFIG is set, but always declared
* so callers can reference it without an #if guard.
*/
int push_config_to_standbys(cluster_t *c, const uint8_t *bytes, size_t blen,
const uint8_t sha256[32], uint64_t new_tag);
const uint8_t sha256[32], uint64_t new_tag,
int *acked_out);
/*
* handle_upgrade_config: handle an OP_upgradeConfig request from an admin tool.