1 Commits

Author	SHA1	Message	Date
CoreRasurae	4d3499dcfb	feat(async): wire retry policies into services ... Wire per-service retry policies and circuit breakers into the service layer via ServiceRetryWiring, backed by ServiceRetryPolicyRegistry and configurable through Settings environment variables. Production hardening from code review: - Fix TOCTOU race in CircuitBreaker._on_success (half-open state) - Add half-open probe limit to prevent unbounded concurrent requests - Track all exception types for circuit breaker failure counting - Detect async callables wrapped in functools.partial and callable objects - Enforce spec-compliant 2s minimum for linear backoff strategy - Enforce 0.1s floor for fixed backoff strategy - Add retry amplification guard via contextvars nesting depth tracking - Cap total retry wall-clock time at 300s (MAX_RETRY_TOTAL_TIMEOUT) - Sanitize exception messages in retry logs to prevent secret leakage - Fix wrap_service_method TOCTOU by holding cache lock for full operation - Deep-copy default policies to prevent cross-policy mutation - Warn on unknown override keys in apply_overrides - Guard apply_overrides against non-dict and deeply nested JSON values - Read circuit breaker state under lock in is_circuit_open - Catch RecursionError in JSON config parsing - Add total_timeout + nesting guard to retry_service_operation decorator - Extend secret sanitization to Authorization headers, private_key, connection_string, and access_key patterns - Enforce 0.1s floor on jitter backoff strategy - Cache wait strategies per service in ServiceRetryWiring (M3) - Reset failure_count to 0 when entering half-open from open (M6) - Use cached _get_wait_strategy() in execute()/async_execute() - Move circuit-open logging out of _on_failure lock scope to prevent holding the lock during potentially slow I/O (F1) - Pass total_timeout=MAX_RETRY_TOTAL_TIMEOUT to wrap_service_method retry_service_operation call for consistency with execute() (F4) - Capture failure_count into local variable inside lock scope before logging outside the lock, preventing stale reads from concurrent threads in CircuitBreaker.call() and async_call() (F1) - Deep-copy module-level DEFAULT_DATABASE_RETRY and DEFAULT_CIRCUIT_BREAKER in ServiceRetryPolicyRegistry.get() for auto-generated unknown service policies, preventing shared mutable state corruption (F1) - Unify CircuitBreaker to a single threading.Lock for sync and async (P1-1) - Restore BaseException permit in half-open path to prevent permit leak (P1-6) - Prevent CircuitBreakerOpen cascading into failure_count (S2) - Protect all logger calls with contextlib.suppress (S3, S4) - Replace time.time() with time.monotonic() for monotonic timing (S5) - Add distinct log events for half-open and closed transitions (S11, S12) - Track pre-existing services so second apply_settings_defaults only targets newly registered services (P1-2) - Lazy circuit breaker creation via _get_or_create_cb() (P1-3) - Reject async callables in sync execute() with TypeError (P1-5) - Strengthen retry predicate to retry_if_exception_type(Exception) & retry_if_not_exception_type(CircuitBreakerOpen) (S1) - Add lock on _get_wait_strategy cache access (P2-16) - Truncate raw JSON to 80 chars in override warning (P2-17) - Warn on non-dict JSON overrides (P2-29) - Debug log for nesting guard bypass (S13) - Deep-copy from get() and all_policies() in registry (P1-4) - Thread-safe registry with threading.Lock (P2-15) - Robust exception handling in apply_overrides get() (P2-18) - Log ValidationError details on override failure (P2-19) - Sanitize service_name via _safe_service_name() (P2-28) - Warn on non-dict sub-key values in overrides (P2-30) - Allowlist for is_read_only_plan_operation phases (P2-10) - Cap retry_auto_debug sleep at 60s (P2-11) - Use is-not-None instead of falsy checks for error values (P2-12) - Extend secret regex with bearer, session_id, auth_token, refresh_token, client_secret patterns (P2-25) - Pre-truncate error messages to 2000 chars before regex (P2-26) - Add upper bounds on retry Settings fields (P2-7) - Add cross-field validator max_delay >= base_delay (P2-8) - Case-insensitive backoff strategy validation (P2-21) - Add half_open_max_successes setting (S10) - Remove phantom ContextFragment from services __all__ (ImportError fix) - Export ServiceRetryWiring from application.services package - Include sanitised error context in TypeError logging fallback - Initialise RetryContext.attempt_count to 1 for bare context-manager usage - Introduce CircuitBreakerState StrEnum replacing raw string literals - Fix vacuous CircuitBreakerOpen propagation assertions in BDD steps - Replace tautological logging test with structlog capture verification - Assert circuit breaker existence instead of silently skipping on None - Add Unicode control-char rejection validator to ServiceRetryPolicy.service_name - Add name parameter with service= in all log calls - Add extra="forbid" to all 3 Pydantic models - Deep-copy _SERVICE_DEFAULTS construction - Key normalisation (.strip()) in get() and apply_overrides() - Add cooldown <= recovery_timeout validator - Async guard on RetryContext.execute() - Nesting guard on RetryContext.execute()/async_execute() - stop_after_delay(300.0) on RetryContext - retry_auto_debug async-only guard, dict result fix, sleep guard - Retry-attempt logging in RetryContext - Module-level docs for contextlib.suppress(TypeError) rationale - Exhaustion log on retry failure - Startup log in __init__; name=service_name to CircuitBreaker - log_after_retry guarded to not fire on first-attempt success - get_retry_decorator now includes logging callbacks - Changed retry_backoff_strategy from str to RetryStrategy StrEnum Closes #313	2026-03-11 17:42:13 +00:00