3 Commits

Author	SHA1	Message	Date
HAL9000	1b12af2765	fix(providers): enforce per-plan budget in FallbackSelector.select() ... Imported CostMetadata into fallback_selector.py to access per-plan budget data. Extended FallbackSelector.__init__ with cost_metadata: CostMetadata | None = None and stored it in self._cost_metadata. Implemented per-plan budget check in FallbackSelector.select() immediately after the daily budget validation to enforce per-plan limits during selection. Added two new TDD scenarios to features/cost_controls.feature to exercise per-plan budget behavior, tagged @tdd_issue @tdd_issue_10471. Added new test steps at features/steps/tdd_fallback_plan_budget_steps.py to support the new scenarios. ISSUES CLOSED: #10485	2026-06-06 09:24:27 -04:00
freemo	5a3678cd6c	fix(concurrency): protect CostTracker._daily_costs with a threading.Lock ... The record_usage method performed an unprotected read-modify-write on _daily_costs, a classic TOCTOU race condition. In multi-threaded execution (ThreadPoolExecutor for parallel plan steps), two threads could interleave their .get() read and = write, causing one thread's cost increment to be silently overwritten by the other. Changes: - Add _daily_costs_lock: threading.Lock to CostTracker.__init__ - Wrap the read-modify-write in record_usage with self._daily_costs_lock - Protect reads in check_daily_budget and get_daily_spend with the same lock - Add Behave @concurrency scenario: 20 threads concurrently call record_usage; final daily spend must equal the sum of all individual costs - Add Robot Framework integration smoke test via helper_cost_controls.py cost-tracker-concurrent command All accesses to _daily_costs are now lock-protected. nox -e typecheck passes with zero errors. Existing cost_controls tests continue to pass. ISSUES CLOSED: #1919	2026-04-05 04:09:27 +00:00
freemo	134dce896a	feat(provider): add cost controls and fallback ... Add token/cost tracking, budget enforcement (per-plan and per-day), provider fallback selection with capability filtering, and cost metadata for plan models. New modules: - providers/cost_table.py: CostEntry + ProviderCostTable with default pricing for OpenAI, Anthropic, Google, Groq, Together, Cohere, Mock - providers/cost_tracker.py: BudgetStatus enum, BudgetCheckResult, CostTracker with warn-at-90%/block-at-100% enforcement - providers/fallback_selector.py: FallbackSelector with capability filtering (tool_calls, streaming, vision, json_mode) and budget - domain/models/core/cost_metadata.py: CostMetadata + BudgetExhaustionEvent Modified: - config/settings.py: budget_per_plan, budget_per_day, fallback_providers - domain/models/core/plan.py: cost_metadata field + CLI dict surfacing - providers/__init__.py: public exports for new classes Testing: - 71 Behave scenarios in features/cost_controls.feature (all pass) - 6 Robot Framework integration tests (all pass) - ASV benchmarks in benchmarks/cost_controls_bench.py - nox lint, typecheck, format, docs, build, dead_code, security_scan pass Closes #324	2026-02-25 12:08:01 -05:00