| """Case-local recovery policy cells for the API reliability successor.""" |
|
|
| from __future__ import annotations |
|
|
| from typing import Any |
|
|
|
|
| FAILURE_SIGNALS = ( |
| "queued_replay", |
| "provider_5xx", |
| "timeout", |
| "rate_limit", |
| ) |
|
|
| OPERATION_CLASSES = ( |
| "observation", |
| "decision", |
| "mutation", |
| "pricing", |
| ) |
|
|
| |
| RECOVERY_PROFILES = ( |
| "recovery-profile-k7", |
| "recovery-profile-m4", |
| "recovery-profile-q9", |
| "recovery-profile-v2", |
| ) |
|
|
|
|
| def _rule_cells() -> list[dict[str, str]]: |
| cells: list[dict[str, str]] = [] |
| for row, failure_signal in enumerate(FAILURE_SIGNALS): |
| for column, operation_class in enumerate(OPERATION_CLASSES): |
| cells.append( |
| { |
| "rule_atom": f"R{len(cells) + 1:02d}", |
| "failure_signal": failure_signal, |
| "operation_class": operation_class, |
| "recovery_profile_id": RECOVERY_PROFILES[(row + column) % len(RECOVERY_PROFILES)], |
| "evidence": "verified archived recovery outcome", |
| } |
| ) |
| return cells |
|
|
|
|
| RECOVERY_RULE_CELLS = _rule_cells() |
| RULE_LOOKUP = { |
| (cell["failure_signal"], cell["operation_class"]): cell["recovery_profile_id"] |
| for cell in RECOVERY_RULE_CELLS |
| } |
| RULE_ATOM_LOOKUP = { |
| (cell["failure_signal"], cell["operation_class"]): cell["rule_atom"] |
| for cell in RECOVERY_RULE_CELLS |
| } |
|
|
|
|
| def failure_signal_for(source: dict[str, Any]) -> str: |
| status = str(source.get("status") or "").lower() |
| error_code = str(source.get("error_code") or "").upper() |
| if status == "queued" or error_code == "REPLAY_QUEUED": |
| return "queued_replay" |
| if status == "rate_limited" or error_code in {"HTTP_429", "RATE_LIMIT_REMAINING_ZERO"}: |
| return "rate_limit" |
| if status == "timeout" or error_code == "TIMEOUT" or error_code == "HTTP_504": |
| return "timeout" |
| if status == "transient_error" or error_code.startswith("HTTP_5"): |
| return "provider_5xx" |
| return "provider_5xx" |
|
|
|
|
| def operation_class_for(operation: str) -> str: |
| operation = str(operation or "").lower() |
| if operation in {"track_parcel", "list_watch_hits", "sync_availability", "validate_address"}: |
| return "observation" |
| if operation in {"review_case", "score_transaction", "release_hold"}: |
| return "decision" |
| if operation in {"quote_shipment"}: |
| return "pricing" |
| return "mutation" |
|
|
|
|
| def required_recovery_profile(source: dict[str, Any]) -> str: |
| return RULE_LOOKUP[(failure_signal_for(source), operation_class_for(source.get("operation", "")))] |
|
|
