feat: Claude Sonnet 429 仅限模型限流

backend/internal/repository/account_repo.go

@@ -794,6 +794,46 @@ func (r *accountRepository) SetAntigravityQuotaScopeLimit(ctx context.Context, i
 	return nil
 }
 
+func (r *accountRepository) SetModelRateLimit(ctx context.Context, id int64, scope string, resetAt time.Time) error {
+	if scope == "" {
+		return nil
+	}
+	now := time.Now().UTC()
+	payload := map[string]string{
+		"rate_limited_at":     now.Format(time.RFC3339),
+		"rate_limit_reset_at": resetAt.UTC().Format(time.RFC3339),
+	}
+	raw, err := json.Marshal(payload)
+	if err != nil {
+		return err
+	}
+
+	path := "{model_rate_limits," + scope + "}"
+	client := clientFromContext(ctx, r.client)
+	result, err := client.ExecContext(
+		ctx,
+		"UPDATE accounts SET extra = jsonb_set(COALESCE(extra, '{}'::jsonb), $1::text[], $2::jsonb, true), updated_at = NOW() WHERE id = $3 AND deleted_at IS NULL",
+		path,
+		raw,
+		id,
+	)
+	if err != nil {
+		return err
+	}
+
+	affected, err := result.RowsAffected()
+	if err != nil {
+		return err
+	}
+	if affected == 0 {
+		return service.ErrAccountNotFound
+	}
+	if err := enqueueSchedulerOutbox(ctx, r.sql, service.SchedulerOutboxEventAccountChanged, &id, nil, nil); err != nil {
+		log.Printf("[SchedulerOutbox] enqueue model rate limit failed: account=%d err=%v", id, err)
+	}
+	return nil
+}
+
 func (r *accountRepository) SetOverloaded(ctx context.Context, id int64, until time.Time) error {
 	_, err := r.client.Account.Update().
 		Where(dbaccount.IDEQ(id)).
@@ -885,6 +925,30 @@ func (r *accountRepository) ClearAntigravityQuotaScopes(ctx context.Context, id
 	return nil
 }
 
+func (r *accountRepository) ClearModelRateLimits(ctx context.Context, id int64) error {
+	client := clientFromContext(ctx, r.client)
+	result, err := client.ExecContext(
+		ctx,
+		"UPDATE accounts SET extra = COALESCE(extra, '{}'::jsonb) - 'model_rate_limits', updated_at = NOW() WHERE id = $1 AND deleted_at IS NULL",
+		id,
+	)
+	if err != nil {
+		return err
+	}
+
+	affected, err := result.RowsAffected()
+	if err != nil {
+		return err
+	}
+	if affected == 0 {
+		return service.ErrAccountNotFound
+	}
+	if err := enqueueSchedulerOutbox(ctx, r.sql, service.SchedulerOutboxEventAccountChanged, &id, nil, nil); err != nil {
+		log.Printf("[SchedulerOutbox] enqueue clear model rate limit failed: account=%d err=%v", id, err)
+	}
+	return nil
+}
+
 func (r *accountRepository) UpdateSessionWindow(ctx context.Context, id int64, start, end *time.Time, status string) error {
 	builder := r.client.Account.Update().
 		Where(dbaccount.IDEQ(id)).

backend/internal/server/api_contract_test.go

@@ -780,6 +780,10 @@ func (s *stubAccountRepo) SetAntigravityQuotaScopeLimit(ctx context.Context, id
 	return errors.New("not implemented")
 }
 
+func (s *stubAccountRepo) SetModelRateLimit(ctx context.Context, id int64, scope string, resetAt time.Time) error {
+	return errors.New("not implemented")
+}
+
 func (s *stubAccountRepo) SetOverloaded(ctx context.Context, id int64, until time.Time) error {
 	return errors.New("not implemented")
 }
@@ -800,6 +804,10 @@ func (s *stubAccountRepo) ClearAntigravityQuotaScopes(ctx context.Context, id in
 	return errors.New("not implemented")
 }
 
+func (s *stubAccountRepo) ClearModelRateLimits(ctx context.Context, id int64) error {
+	return errors.New("not implemented")
+}
+
 func (s *stubAccountRepo) UpdateSessionWindow(ctx context.Context, id int64, start, end *time.Time, status string) error {
 	return errors.New("not implemented")
 }

backend/internal/service/account_service.go

@@ -50,11 +50,13 @@ type AccountRepository interface {
 
 	SetRateLimited(ctx context.Context, id int64, resetAt time.Time) error
 	SetAntigravityQuotaScopeLimit(ctx context.Context, id int64, scope AntigravityQuotaScope, resetAt time.Time) error
+	SetModelRateLimit(ctx context.Context, id int64, scope string, resetAt time.Time) error
 	SetOverloaded(ctx context.Context, id int64, until time.Time) error
 	SetTempUnschedulable(ctx context.Context, id int64, until time.Time, reason string) error
 	ClearTempUnschedulable(ctx context.Context, id int64) error
 	ClearRateLimit(ctx context.Context, id int64) error
 	ClearAntigravityQuotaScopes(ctx context.Context, id int64) error
+	ClearModelRateLimits(ctx context.Context, id int64) error
 	UpdateSessionWindow(ctx context.Context, id int64, start, end *time.Time, status string) error
 	UpdateExtra(ctx context.Context, id int64, updates map[string]any) error
 	BulkUpdate(ctx context.Context, ids []int64, updates AccountBulkUpdate) (int64, error)

backend/internal/service/account_service_delete_test.go

@@ -143,6 +143,10 @@ func (s *accountRepoStub) SetAntigravityQuotaScopeLimit(ctx context.Context, id
 	panic("unexpected SetAntigravityQuotaScopeLimit call")
 }
 
+func (s *accountRepoStub) SetModelRateLimit(ctx context.Context, id int64, scope string, resetAt time.Time) error {
+	panic("unexpected SetModelRateLimit call")
+}
+
 func (s *accountRepoStub) SetOverloaded(ctx context.Context, id int64, until time.Time) error {
 	panic("unexpected SetOverloaded call")
 }
@@ -163,6 +167,10 @@ func (s *accountRepoStub) ClearAntigravityQuotaScopes(ctx context.Context, id in
 	panic("unexpected ClearAntigravityQuotaScopes call")
 }
 
+func (s *accountRepoStub) ClearModelRateLimits(ctx context.Context, id int64) error {
+	panic("unexpected ClearModelRateLimits call")
+}
+
 func (s *accountRepoStub) UpdateSessionWindow(ctx context.Context, id int64, start, end *time.Time, status string) error {
 	panic("unexpected UpdateSessionWindow call")
 }

backend/internal/service/antigravity_quota_scope.go

@@ -49,6 +49,9 @@ func (a *Account) IsSchedulableForModel(requestedModel string) bool {
 	if !a.IsSchedulable() {
 		return false
 	}
+	if a.isModelRateLimited(requestedModel) {
+		return false
+	}
 	if a.Platform != PlatformAntigravity {
 		return true
 	}

backend/internal/service/gateway_multiplatform_test.go

@@ -142,6 +142,9 @@ func (m *mockAccountRepoForPlatform) SetRateLimited(ctx context.Context, id int6
 func (m *mockAccountRepoForPlatform) SetAntigravityQuotaScopeLimit(ctx context.Context, id int64, scope AntigravityQuotaScope, resetAt time.Time) error {
 	return nil
 }
+func (m *mockAccountRepoForPlatform) SetModelRateLimit(ctx context.Context, id int64, scope string, resetAt time.Time) error {
+	return nil
+}
 func (m *mockAccountRepoForPlatform) SetOverloaded(ctx context.Context, id int64, until time.Time) error {
 	return nil
 }
@@ -157,6 +160,9 @@ func (m *mockAccountRepoForPlatform) ClearRateLimit(ctx context.Context, id int6
 func (m *mockAccountRepoForPlatform) ClearAntigravityQuotaScopes(ctx context.Context, id int64) error {
 	return nil
 }
+func (m *mockAccountRepoForPlatform) ClearModelRateLimits(ctx context.Context, id int64) error {
+	return nil
+}
 func (m *mockAccountRepoForPlatform) UpdateSessionWindow(ctx context.Context, id int64, start, end *time.Time, status string) error {
 	return nil
 }

backend/internal/service/gemini_multiplatform_test.go

@@ -125,6 +125,9 @@ func (m *mockAccountRepoForGemini) SetRateLimited(ctx context.Context, id int64,
 func (m *mockAccountRepoForGemini) SetAntigravityQuotaScopeLimit(ctx context.Context, id int64, scope AntigravityQuotaScope, resetAt time.Time) error {
 	return nil
 }
+func (m *mockAccountRepoForGemini) SetModelRateLimit(ctx context.Context, id int64, scope string, resetAt time.Time) error {
+	return nil
+}
 func (m *mockAccountRepoForGemini) SetOverloaded(ctx context.Context, id int64, until time.Time) error {
 	return nil
 }
@@ -138,6 +141,9 @@ func (m *mockAccountRepoForGemini) ClearRateLimit(ctx context.Context, id int64)
 func (m *mockAccountRepoForGemini) ClearAntigravityQuotaScopes(ctx context.Context, id int64) error {
 	return nil
 }
+func (m *mockAccountRepoForGemini) ClearModelRateLimits(ctx context.Context, id int64) error {
+	return nil
+}
 func (m *mockAccountRepoForGemini) UpdateSessionWindow(ctx context.Context, id int64, start, end *time.Time, status string) error {
 	return nil
 }

backend/internal/service/model_rate_limit.go

@@ -0,0 +1,56 @@
+package service
+
+import (
+	"strings"
+	"time"
+)
+
+const modelRateLimitsKey = "model_rate_limits"
+const modelRateLimitScopeClaudeSonnet = "claude_sonnet"
+
+func resolveModelRateLimitScope(requestedModel string) (string, bool) {
+	model := strings.ToLower(strings.TrimSpace(requestedModel))
+	if model == "" {
+		return "", false
+	}
+	model = strings.TrimPrefix(model, "models/")
+	if strings.Contains(model, "sonnet") {
+		return modelRateLimitScopeClaudeSonnet, true
+	}
+	return "", false
+}
+
+func (a *Account) isModelRateLimited(requestedModel string) bool {
+	scope, ok := resolveModelRateLimitScope(requestedModel)
+	if !ok {
+		return false
+	}
+	resetAt := a.modelRateLimitResetAt(scope)
+	if resetAt == nil {
+		return false
+	}
+	return time.Now().Before(*resetAt)
+}
+
+func (a *Account) modelRateLimitResetAt(scope string) *time.Time {
+	if a == nil || a.Extra == nil || scope == "" {
+		return nil
+	}
+	rawLimits, ok := a.Extra[modelRateLimitsKey].(map[string]any)
+	if !ok {
+		return nil
+	}
+	rawLimit, ok := rawLimits[scope].(map[string]any)
+	if !ok {
+		return nil
+	}
+	resetAtRaw, ok := rawLimit["rate_limit_reset_at"].(string)
+	if !ok || strings.TrimSpace(resetAtRaw) == "" {
+		return nil
+	}
+	resetAt, err := time.Parse(time.RFC3339, resetAtRaw)
+	if err != nil {
+		return nil
+	}
+	return &resetAt
+}

backend/internal/service/ratelimit_service.go

@@ -127,7 +127,7 @@ func (s *RateLimitService) HandleUpstreamError(ctx context.Context, account *Acc
 		s.handleAuthError(ctx, account, msg)
 		shouldDisable = true
 	case 429:
-		s.handle429(ctx, account, headers)
+		s.handle429(ctx, account, headers, responseBody)
 		shouldDisable = false
 	case 529:
 		s.handle529(ctx, account)
@@ -333,12 +333,20 @@ func (s *RateLimitService) handleCustomErrorCode(ctx context.Context, account *A
 
 // handle429 处理429限流错误
 // 解析响应头获取重置时间，标记账号为限流状态
-func (s *RateLimitService) handle429(ctx context.Context, account *Account, headers http.Header) {
+func (s *RateLimitService) handle429(ctx context.Context, account *Account, headers http.Header, responseBody []byte) {
 	// 解析重置时间戳
 	resetTimestamp := headers.Get("anthropic-ratelimit-unified-reset")
 	if resetTimestamp == "" {
 		// 没有重置时间，使用默认5分钟
 		resetAt := time.Now().Add(5 * time.Minute)
+		if s.shouldScopeClaudeSonnetRateLimit(account, responseBody) {
+			if err := s.accountRepo.SetModelRateLimit(ctx, account.ID, modelRateLimitScopeClaudeSonnet, resetAt); err != nil {
+				slog.Warn("model_rate_limit_set_failed", "account_id", account.ID, "scope", modelRateLimitScopeClaudeSonnet, "error", err)
+			} else {
+				slog.Info("account_model_rate_limited", "account_id", account.ID, "scope", modelRateLimitScopeClaudeSonnet, "reset_at", resetAt)
+			}
+			return
+		}
 		if err := s.accountRepo.SetRateLimited(ctx, account.ID, resetAt); err != nil {
 			slog.Warn("rate_limit_set_failed", "account_id", account.ID, "error", err)
 		}
@@ -350,6 +358,14 @@ func (s *RateLimitService) handle429(ctx context.Context, account *Account, head
 	if err != nil {
 		slog.Warn("rate_limit_reset_parse_failed", "reset_timestamp", resetTimestamp, "error", err)
 		resetAt := time.Now().Add(5 * time.Minute)
+		if s.shouldScopeClaudeSonnetRateLimit(account, responseBody) {
+			if err := s.accountRepo.SetModelRateLimit(ctx, account.ID, modelRateLimitScopeClaudeSonnet, resetAt); err != nil {
+				slog.Warn("model_rate_limit_set_failed", "account_id", account.ID, "scope", modelRateLimitScopeClaudeSonnet, "error", err)
+			} else {
+				slog.Info("account_model_rate_limited", "account_id", account.ID, "scope", modelRateLimitScopeClaudeSonnet, "reset_at", resetAt)
+			}
+			return
+		}
 		if err := s.accountRepo.SetRateLimited(ctx, account.ID, resetAt); err != nil {
 			slog.Warn("rate_limit_set_failed", "account_id", account.ID, "error", err)
 		}
@@ -358,6 +374,15 @@ func (s *RateLimitService) handle429(ctx context.Context, account *Account, head
 
 	resetAt := time.Unix(ts, 0)
 
+	if s.shouldScopeClaudeSonnetRateLimit(account, responseBody) {
+		if err := s.accountRepo.SetModelRateLimit(ctx, account.ID, modelRateLimitScopeClaudeSonnet, resetAt); err != nil {
+			slog.Warn("model_rate_limit_set_failed", "account_id", account.ID, "scope", modelRateLimitScopeClaudeSonnet, "error", err)
+			return
+		}
+		slog.Info("account_model_rate_limited", "account_id", account.ID, "scope", modelRateLimitScopeClaudeSonnet, "reset_at", resetAt)
+		return
+	}
+
 	// 标记限流状态
 	if err := s.accountRepo.SetRateLimited(ctx, account.ID, resetAt); err != nil {
 		slog.Warn("rate_limit_set_failed", "account_id", account.ID, "error", err)
@@ -374,6 +399,17 @@ func (s *RateLimitService) handle429(ctx context.Context, account *Account, head
 	slog.Info("account_rate_limited", "account_id", account.ID, "reset_at", resetAt)
 }
 
+func (s *RateLimitService) shouldScopeClaudeSonnetRateLimit(account *Account, responseBody []byte) bool {
+	if account == nil || account.Platform != PlatformAnthropic {
+		return false
+	}
+	msg := strings.ToLower(strings.TrimSpace(extractUpstreamErrorMessage(responseBody)))
+	if msg == "" {
+		return false
+	}
+	return strings.Contains(msg, "sonnet")
+}
+
 // handle529 处理529过载错误
 // 根据配置设置过载冷却时间
 func (s *RateLimitService) handle529(ctx context.Context, account *Account) {
@@ -431,7 +467,10 @@ func (s *RateLimitService) ClearRateLimit(ctx context.Context, accountID int64)
 	if err := s.accountRepo.ClearRateLimit(ctx, accountID); err != nil {
 		return err
 	}
-	return s.accountRepo.ClearAntigravityQuotaScopes(ctx, accountID)
+	if err := s.accountRepo.ClearAntigravityQuotaScopes(ctx, accountID); err != nil {
+		return err
+	}
+	return s.accountRepo.ClearModelRateLimits(ctx, accountID)
 }
 
 func (s *RateLimitService) ClearTempUnschedulable(ctx context.Context, accountID int64) error {