feat: add reconciler supersession close gate

This commit is contained in:
2026-07-09 12:36:50 -04:00
parent c738e5b10d
commit b0ae1605c3
6 changed files with 706 additions and 0 deletions
+167
View File
@@ -4842,6 +4842,22 @@ RECONCILER_CLOSE_REPORT_FIELDS = (
"no review/merge confirmation",
)
RECONCILER_SUPERSESSION_REPORT_FIELDS = (
"identity/profile",
"supersession close capability proof",
"target PR live state",
"target PR independent-work proof",
"superseding PR merged state",
"superseding merge commit SHA",
"target branch SHA",
"superseding ancestry proof",
"canonical close comment",
"linked issue status",
"PR close result",
"issue close result",
"no review/merge confirmation",
)
def assess_reconciler_close_gate(
*,
@@ -4988,6 +5004,157 @@ def assess_reconciler_close_gate(
}
def assess_reconciler_supersession_close_gate(
*,
target_pr_number: int | None,
target_pr_state: str | None,
target_pr_mergeable: bool | None,
target_independently_required: bool | None,
superseding_pr_number: int | None,
superseding_pr_state: str | None,
superseding_pr_merged: bool,
superseding_merge_commit_sha: str | None,
superseding_head_sha: str | None,
target_branch: str | None,
target_branch_sha: str | None,
superseding_head_is_ancestor_of_target: bool | None,
canonical_comment_valid: bool,
canonical_comment_mentions_superseding_pr: bool,
canonical_comment_mentions_merge_commit: bool,
close_pr_capability: bool,
close_issue_capability: bool = False,
target_issue_state: str | None = None,
issue_satisfied_by_superseding: bool = False,
) -> dict:
"""Gate reconciler closure of PRs/issues superseded by a merged PR.
This is stricter than already-landed cleanup: the target PR may be closed
only after a named superseding PR is live-verified merged, its head is on a
freshly fetched target branch, the target PR is proven not independently
required, and a canonical close comment cites the superseding PR and merge
commit.
"""
reasons: list[str] = []
if not isinstance(target_pr_number, int) or target_pr_number <= 0:
reasons.append("target PR number missing or invalid (#525)")
if not isinstance(superseding_pr_number, int) or superseding_pr_number <= 0:
reasons.append("superseding PR number missing or invalid (#525)")
if target_pr_number and superseding_pr_number and (
target_pr_number == superseding_pr_number
):
reasons.append("target PR and superseding PR must differ (#525)")
if (target_pr_state or "").strip().lower() != "open":
reasons.append("target PR must be live-verified open before close (#525)")
if target_pr_mergeable is True:
reasons.append(
"target PR is still mergeable; prove it is superseded before close (#525)"
)
if target_independently_required is not False:
reasons.append(
"target PR independent-work proof missing; close requires explicit "
"proof that no required work remains (#525)"
)
if (superseding_pr_state or "").strip().lower() != "closed":
reasons.append("superseding PR must be live-verified closed (#525)")
if superseding_pr_merged is not True:
reasons.append("superseding PR must be live-verified merged (#525)")
if not _FULL_SHA.match((superseding_merge_commit_sha or "").strip()):
reasons.append("superseding merge commit SHA missing or invalid (#525)")
if not _FULL_SHA.match((superseding_head_sha or "").strip()):
reasons.append("superseding head SHA missing or invalid (#525)")
if not (target_branch or "").strip():
reasons.append("target branch missing (#525)")
if not _FULL_SHA.match((target_branch_sha or "").strip()):
reasons.append("target branch SHA missing or invalid (#525)")
if superseding_head_is_ancestor_of_target is None:
reasons.append("superseding ancestry proof not checked (#525)")
if not canonical_comment_valid:
reasons.append("canonical close comment failed validation (#525)")
if not canonical_comment_mentions_superseding_pr:
reasons.append("canonical comment must cite superseding PR (#525)")
if not canonical_comment_mentions_merge_commit:
reasons.append("canonical comment must cite merge commit SHA (#525)")
never_allowed = {
"review_allowed": False,
"approve_allowed": False,
"request_changes_allowed": False,
"merge_allowed": False,
}
if reasons:
return {
"outcome": "GATE_NOT_PROVEN",
"pr_close_allowed": False,
"issue_close_allowed": False,
"reasons": reasons,
"required_report_fields": RECONCILER_SUPERSESSION_REPORT_FIELDS,
"safe_next_action": (
"prove superseding PR state, target branch ancestry, target "
"supersession, and canonical comment before closing"
),
**never_allowed,
}
if superseding_head_is_ancestor_of_target is False:
return {
"outcome": "SUPERSEDING_PR_NOT_ON_TARGET",
"pr_close_allowed": False,
"issue_close_allowed": False,
"reasons": [
f"superseding PR #{superseding_pr_number} head is not an "
f"ancestor of {target_branch}; supersession close denied (#525)"
],
"required_report_fields": RECONCILER_SUPERSESSION_REPORT_FIELDS,
"safe_next_action": "re-fetch target branch and re-check ancestry",
**never_allowed,
}
if close_pr_capability is not True:
return {
"outcome": "RECOVERY_HANDOFF_REQUIRED",
"pr_close_allowed": False,
"issue_close_allowed": False,
"reasons": [
"exact gitea.pr.close capability not proven; produce a "
"recovery handoff instead of closing (#525)"
],
"required_report_fields": RECONCILER_SUPERSESSION_REPORT_FIELDS,
"safe_next_action": (
"launch a reconciler profile with gitea.pr.close and replay "
"the live-state proof"
),
**never_allowed,
}
issue_close_allowed = (
(target_issue_state or "").strip().lower() == "open"
and issue_satisfied_by_superseding is True
and close_issue_capability is True
)
issue_reasons = []
if (target_issue_state or "").strip().lower() == "closed":
issue_reasons.append("linked issue already closed; no issue close attempted (#525)")
elif target_issue_state and not issue_close_allowed:
issue_reasons.append(
"issue close requires an open issue satisfied by the superseding "
"merged PR and exact gitea.issue.close capability (#525)"
)
return {
"outcome": "SUPERSESSION_CLOSE_ALLOWED",
"pr_close_allowed": True,
"issue_close_allowed": issue_close_allowed,
"reasons": issue_reasons,
"required_report_fields": RECONCILER_SUPERSESSION_REPORT_FIELDS,
"safe_next_action": (
"post the canonical comment, close the superseded PR, and close "
"the linked issue only when issue_close_allowed is true"
),
**never_allowed,
}
# ---------------------------------------------------------------------------
# Identity disclosure (#305)
# ---------------------------------------------------------------------------