fix: make cross-role allocations consumable by independent workers (Closes #843)
Controller-created role=author allocations were owned by the allocating controller session with no authorized consume path for independent author workers. When the controller exited, the lease became stale_dead_process and required abandon/reassign instead of a usable handoff. - Mark cross-role apply with durable handoff provenance (pending) - Allow gitea_adopt_workflow_lease to consume pending handoffs by the required role without sharing controller session identity or requiring the controller process to remain alive - Atomically transfer assignment+lease ownership and set adopted_by_session_id with read-after-write evidence - Reject wrong-role, second, and terminal adoptions - Surface consume_allocation identifiers in process_work_queue results - Preserve same-role allocation and genuine abandon recovery behavior Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
This commit is contained in:
Claude Opus 4.8
+169
-3
@@ -1637,11 +1637,13 @@ class ControlPlaneDB:
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provenance: dict[str, Any] | None = None,
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lease_ttl_seconds: int = DEFAULT_LEASE_TTL_SECONDS,
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) -> dict[str, Any]:
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"""Transfer or refresh a lease with provenance (#601).
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"""Transfer or refresh a lease with provenance (#601 / #843).
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* Same owner + active → refresh (owner-resume).
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* Cross-role handoff pending + matching required role → atomic consume
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(even while the allocating controller session still "owns" the lease).
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* Expired/abandoned/released → create new assignment+lease with provenance.
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* Active foreign → raise ForeignLeaseError (never silent steal).
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* Active foreign (non-handoff) → raise ForeignLeaseError (never silent steal).
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"""
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now = _utc_now()
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now_s = _ts(now)
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@@ -1677,7 +1679,35 @@ class ControlPlaneDB:
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status = "expired"
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owner = lease["session_id"]
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if status == "active" and owner != adopter_session_id:
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# Parse durable provenance for cross-role handoff consume (#843).
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lease_prov: dict[str, Any] = {}
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if "provenance_json" in lease.keys() and lease["provenance_json"]:
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try:
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loaded = json.loads(lease["provenance_json"])
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if isinstance(loaded, dict):
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lease_prov = loaded
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except (TypeError, json.JSONDecodeError):
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lease_prov = {}
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handoff_pending = bool(lease_prov.get("cross_role_handoff")) and (
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str(lease_prov.get("handoff_status") or "pending").strip().lower()
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== "pending"
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)
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already_adopted = bool(
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(lease["adopted_by_session_id"] if "adopted_by_session_id" in lease.keys() else None)
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or lease_prov.get("adopted_by_session_id")
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)
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required_role = str(
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lease_prov.get("required_role") or lease["role"] or ""
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).strip().lower()
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adopter_role = (role or "").strip().lower()
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cross_role_consume = (
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handoff_pending
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and not already_adopted
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and status == "active"
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and owner != adopter_session_id
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)
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if status == "active" and owner != adopter_session_id and not cross_role_consume:
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raise ForeignLeaseError(
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f"cannot adopt active foreign lease {lease_id} owned by {owner}"
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)
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@@ -1761,6 +1791,142 @@ class ControlPlaneDB:
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"reasons": ["owner-resume: refreshed lease with provenance"],
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}
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# #843: controller→required-role handoff consume (atomic, same lease_id)
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if cross_role_consume:
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if not required_role:
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raise ControlPlaneError(
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f"cross-role handoff lease {lease_id} missing required_role"
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)
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if adopter_role != required_role:
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raise ForeignLeaseError(
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f"wrong role for cross-role handoff consume: "
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f"required={required_role} adopter={adopter_role or 'none'} "
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f"(fail closed)"
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)
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# CAS: only transfer if still owned by allocating session and unadopted
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cols = self._lease_columns(conn)
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adopted_col_null = (
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"(adopted_by_session_id IS NULL OR adopted_by_session_id = '')"
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if "adopted_by_session_id" in cols
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else "1=1"
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)
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cas = conn.execute(
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f"""
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UPDATE leases
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SET session_id = ?,
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heartbeat_at = ?,
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expires_at = ?,
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phase = ?,
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role = ?
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WHERE lease_id = ?
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AND status = 'active'
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AND session_id = ?
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AND {adopted_col_null}
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""",
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(
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adopter_session_id,
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now_s,
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expires,
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"adopted",
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required_role,
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lease_id,
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owner,
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),
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)
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if cas.rowcount != 1:
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raise ForeignLeaseError(
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f"cross-role handoff consume lost race for lease {lease_id} "
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"(already adopted or no longer pending; fail closed)"
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)
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if "adopted_from_session_id" in cols:
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conn.execute(
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"""
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UPDATE leases
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SET adopted_from_session_id = ?, adopted_by_session_id = ?
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WHERE lease_id = ?
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""",
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(owner, adopter_session_id, lease_id),
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)
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if "worktree_path" in cols and worktree_path:
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conn.execute(
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"UPDATE leases SET worktree_path = ? WHERE lease_id = ?",
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(worktree_path, lease_id),
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)
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if "owner_pid" in cols and owner_pid is not None:
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conn.execute(
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"UPDATE leases SET owner_pid = ? WHERE lease_id = ?",
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(owner_pid, lease_id),
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)
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if "expected_head_sha" in cols and expected_head_sha:
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conn.execute(
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"UPDATE leases SET expected_head_sha = ? WHERE lease_id = ?",
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(expected_head_sha, lease_id),
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)
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# Merge handoff provenance + caller provenance
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merged = dict(lease_prov)
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merged.update(provenance or {})
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merged["cross_role_handoff"] = True
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merged["handoff_status"] = "adopted"
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merged["adopted_from_session_id"] = owner
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merged["adopted_by_session_id"] = adopter_session_id
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merged["required_role"] = required_role
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if "provenance_json" in cols:
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conn.execute(
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"UPDATE leases SET provenance_json = ? WHERE lease_id = ?",
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(json.dumps(merged), lease_id),
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)
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# Transfer active assignment ownership atomically
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asn_cas = conn.execute(
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"""
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UPDATE assignments
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SET session_id = ?, role = ?
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WHERE lease_id = ? AND status = 'active' AND session_id = ?
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""",
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(adopter_session_id, required_role, lease_id, owner),
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)
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if asn_cas.rowcount < 1:
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# Fail closed: assignment must move with the lease
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raise ControlPlaneError(
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f"cross-role handoff: no active assignment for lease {lease_id} "
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f"owned by {owner}"
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)
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lease2 = conn.execute(
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"SELECT * FROM leases WHERE lease_id = ?", (lease_id,)
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).fetchone()
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asn = conn.execute(
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"""
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SELECT * FROM assignments
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WHERE lease_id = ? AND status = 'active'
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ORDER BY created_at DESC LIMIT 1
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""",
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(lease_id,),
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).fetchone()
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conn.execute(
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"""
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INSERT INTO events(work_item_id, event_type, message, created_at)
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VALUES (?, 'lease_adopted', ?, ?)
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""",
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(
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lease["work_item_id"],
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f"cross-role handoff: {adopter_session_id} consumed "
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f"{lease_id} from {owner} as {required_role}",
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now_s,
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),
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)
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return {
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"outcome": "adopted_cross_role_handoff",
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"lease": dict(lease2) if lease2 else dict(lease),
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"assignment": dict(asn) if asn else None,
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"reasons": [
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"cross-role handoff: independent required-role worker consumed "
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"controller allocation without abandonment"
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],
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"adopted_by_session_id": adopter_session_id,
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"adopted_from_session_id": owner,
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"required_role": required_role,
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"handoff_status": "adopted",
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}
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# Non-active: create new lease + assignment (transfer)
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new_lease_id = f"lease-{uuid.uuid4().hex[:16]}"
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new_asn_id = f"asn-{uuid.uuid4().hex[:16]}"
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