Group pricing (rate multiplier, peak windows, per-user overrides) and
account cost (accounts.rate_multiplier) already live side by side, but
nothing stops the scheduler from handing a request to an account whose
cost multiplier exceeds what the group's pricing can profitably serve.
Add an opt-in per-group profit gate that filters scheduling candidates
by a margin rule, while ordering, scoring, stickiness and breakers keep
working unchanged among qualified accounts.
Admission rule: an account qualifies iff U <= D * (1 - min_margin -
safety_buffer) within a small relative epsilon, where U is
accounts.rate_multiplier (0 is legal; missing/negative/NaN/Inf are
conservatively rejected as invalid) and D is the requester's effective
downstream multiplier (user-group override ?? group default, times the
group peak factor) frozen at the request's pricing instant.
- groups gain profit_control_enabled / profit_min_margin /
profit_safety_buffer (migration 191); the durable auth-cache
invalidation trigger additionally watches the profit and pricing
columns (migration 192) so out-of-band group edits cannot leave
stale auth snapshots; GetByKeyForAuth explicitly projects the new
columns and the API-key auth snapshot version is bumped to force a
refresh of pre-existing snapshots
- request-level pricing instant: token entry points install pricingAt
into ctx; the profit threshold D and the RecordUsage peak factor
read the same instant, so one request never changes price mid-flight
across waits/retries/failover (media and unwired paths keep the
existing record-time semantics)
- the gate covers token requests on openai, anthropic, gemini, grok
and antigravity groups: OpenAI-family handlers via
WithOpenAIRequestPricingContext (responses incl. WS bridge, chat
completions, messages, embeddings, alpha search), the shared gateway
via WithGatewayTokenRequestPricing (messages, chat completions,
responses, gemini model actions); composite groups cannot enable it
directly; image/video/models/usage/count_tokens stay ungated and an
explicit image-generation intent suppresses the gate end to end
- post-slot recheck: after a slot is acquired the account is re-read
via SchedulerSnapshotService.GetAccount (scheduler cache, then DB;
only when both fail the check fails open with WARN + metric); a
vetoed account releases its slot and joins the request's exclusion
set for reselection; sticky bindings are written only after the
final check passes, and an over-threshold sticky account is skipped,
not deleted, so it comes back once its rate recovers
- sticky-session cache contract: GatewayCache.GetSessionAccountID now
returns ErrStickySessionNotFound on a miss (mapped from redis.Nil in
the repository implementation, mirroring ErrRefreshTokenNotFound) so
the profit sticky path can distinguish "no binding yet" from a real
read failure without importing the cache driver in service code
- cross-group re-entry (composite parent -> member group) resolves the
gate against the member group and clears a stale parent gate instead
of letting a foreign threshold veto accounts
- per-platform/group activity counters (installs, threshold vetoes,
invalid-rate vetoes, refresh failures) for observability
- admin UI: profit-control section on the five platforms' group forms
with percent input, validation and platform-switch reset; group
create/update/duplicate normalize and validate the config at a
single choke point
- cmd/profit-preview: offline what-if tool that replays the production
admission semantics over an exported config/account/override/model
dump, reports per-model admitted-account counts under the default
and the worst-case (lowest user override) D, and surfaces probe-sync
staleness as warnings without affecting admission
Tests: service unit coverage for gate resolution/veto/threshold
epsilon/pricing instant/suppress marker/scheduler filtering and
post-slot recheck (incl. -race on the profit surface), unit-tagged
handler slot-recheck and capability-mapping regressions, sqlmock and
real-PostgreSQL integration regressions for the GetByKeyForAuth
projection and the migration-192 trigger watch list, API contract
update, and frontend specs for the five-platform form helpers.
Successful upstream billing probes already persist the upstream-declared
rate as a display-only snapshot. Add a per-account opt-in that writes
that declared rate back to the account's rate_multiplier, so the account
cost basis follows upstream repricing automatically instead of drifting
until an operator notices.
- new per-account flag upstream_billing_rate_sync_enabled stored next to
the probe flag in account extra: enabling sync force-enables the
probe, disabling the probe cascades sync off, and eligibility follows
IsUpstreamBillingProbeIdentity (tightened from any non-empty platform
to an explicit whitelist of the five supported API-key platforms so
future platforms do not silently inherit probe/sync semantics)
- only a successful probe whose declared rate survives validation
(finite, within bounds, not rounded to zero at the rate_multiplier
decimal(10,4) scale) writes back; failed/unsupported/invalid probes
leave rate_multiplier unchanged
- the writeback rides the existing snapshot CAS transaction:
UpdateUpstreamBillingProbeSnapshot takes an optional rateMultiplier
and applies it atomically with the snapshot under the same
identity/snapshot compare-and-swap, so a probe result observed on a
stale account cannot clobber a concurrent admin edit
- admin edit goes through UpdateWithAccountBillingSettings, which
applies the form without overwriting a rate that a probe synchronized
after the edit form was loaded (nil rateMultiplier = not edited);
once sync is enabled the edit form shows the rate as managed
- bulk update rejects a manual rate_multiplier change when any target
account has rate sync enabled (whole batch fails with a dedicated
error so partial writes cannot bypass the sync ownership)
- frontend: sync toggle with hints in the edit modal (probe/sync
enable/disable coupling enforced in the form), synced-rate tooltip on
the rate cell, bulk edit modal warns and blocks rate edits that hit
sync-enabled accounts; en/zh copy updated
- tests: service unit tests for sync gating/validation/cascade, sqlmock
repo tests for the extended CAS, real-PostgreSQL integration tests
(rate written only for successful+enabled accounts, manual rate
protected after sync disabled, admin edit preserved across concurrent
probe sync), handler/API contract updates, frontend specs for modal
coupling, bulk rejection and rate cell
Persist reasoning ceilings and exact mappings for OpenAI groups, enforce them across HTTP and WebSocket forwarding, and invalidate cached auth snapshots.
Admins often recreate groups with the same pricing, routing, and account membership. A server-side duplicate creates an inactive copy for review, preserves eligible account priorities, and recovers ambiguous retries without creating extra groups.
Constraint: Group has no neutral JSON metadata field for durable operation recovery
Constraint: Model routing references account IDs, so copied configuration requires matching bindings
Rejected: Rebuild from the list response | it omits configuration and account priority details
Rejected: Store operation identity in business configuration | it would pollute real group settings
Confidence: high
Scope-risk: moderate
Reversibility: clean
Directive: Keep duplicated groups inactive until an administrator reviews the copied configuration
Tested: Go unit and full tests, go vet, integration-tag compile, frontend Vitest, lint, typecheck, production build, and Playwright duplicate flow
Not-tested: PostgreSQL container integration locally because Docker is unavailable; CI will execute the database-backed suite
Ambiguous idempotency-store failures can occur after the account transaction commits. Scope durable recovery markers to the authenticated admin, retain the operation key across reloads, and recover only an already committed copy without rerunning active work.
Constraint: Generic idempotent handlers may legitimately remain active while a recovery lookup is attempted
Rejected: Reclaim or rerun an in-progress duplicate request | can execute account creation concurrently
Rejected: Recover by source account and key alone | allows another admin to observe the committed copy
Confidence: high
Scope-risk: narrow
Reversibility: clean
Directive: Keep ambiguous-response recovery read-only and bind durable operation markers to the authenticated actor
Tested: Full Go unit suite, go vet, server build, integration-test compilation; frontend lint, typecheck, 1,030 Vitest tests, and production build
Not-tested: Docker-backed PostgreSQL integration runtime because Docker is unavailable
Related: Wei-Shaw/sub2api#1379
Related: Wei-Shaw/sub2api#2928
Admins often need another account with the same provider and routing configuration. Duplicate on the server so credentials never return to the browser, preserve exact group priorities atomically, start the copy paused, and recover the same copy after ambiguous idempotency-store failures.
Constraint: Admin account responses redact credentials, so duplication must remain server-side
Constraint: OAuth and setup-token credentials rotate and must not be shared across account rows
Rejected: Copy raw account JSON to the clipboard | exposes credentials outside the server
Rejected: Duplicate rotating credentials | account-scoped refresh locks can race token rotation
Confidence: high
Scope-risk: moderate
Reversibility: clean
Directive: Keep copies paused, avoid automatic upstream probes, and exclude rotating credential types unless token ownership is redesigned
Tested: Targeted Go tests, Go vet, server build; frontend lint, typecheck, Vitest suite, production build; integration test compiled
Not-tested: Docker-backed PostgreSQL execution because Docker is unavailable
Related: Wei-Shaw/sub2api#1379
Related: Wei-Shaw/sub2api#2928
Follow-up fixes to #3569 based on code audit:
- Expose server_timezone / server_utc_offset in public settings (and the
__APP_CONFIG__ injection payload) and label every peak-window display
with the server UTC offset, so users don't misread the billing window
as browser-local time
- Unify CreateGroup/UpdateGroup peak-config sanitization via a single
NormalizePeakRateConfig chokepoint: non-subscription groups always get
peak fields cleared; unparseable window strings and negative
multipliers are scrubbed when peak is disabled
- Replace hot-path time.Parse in PeakMultiplierAt with a manual HH:MM
parser (accept set verified byte-for-byte identical to
time.Parse("15:04") by exhaustive fuzzing) and reuse it in validation
- Revert the zero-behavior CalculateCost indirection churn in
billing_service/gateway_service introduced by #3569
- Remove dead GetGroupPlatformMap and the duplicate deref helper in the
admin handler package
- Share frontend peak formatting via utils/peak-rate.ts, unify the ×N
label format, and move hardcoded Chinese tooltips to i18n keys
Brisbanehuang