fix: bound activity transaction retries

services/activity-service/internal/service/task/service.go

@@ -217,7 +217,7 @@ func (s *Service) HandleRoomEvent(ctx context.Context, envelope *roomeventsv1.Ev
 	}
 	// coin_spent 是钱包真实扣费金额；旧 outbox 可能只有礼物面值，兜底用 gift_value 保持历史事件可重放。
 	coinSpent := gift.GetCoinSpent()
-	if coinSpent <= 0 {
+	if coinSpent == 0 {
 		coinSpent = gift.GetGiftValue()
 	}
 	dimensions, err := roomGiftTaskDimensions(envelope, &gift)

services/activity-service/internal/service/task/service_test.go

@@ -137,22 +137,34 @@ func TestConsumeTaskEventStillRejectsZeroValue(t *testing.T) {
 
 // TestHandleRoomEventStillRejectsNegativeSpend 确认兼容分支只确认合法零值，不把负值上游事实降级成计数事件。
 func TestHandleRoomEventStillRejectsNegativeSpend(t *testing.T) {
-	repository := newRecordingTaskRepository()
-	svc := taskservice.New(repository, &fakeWalletClient{})
-	envelope := roomGiftEnvelope(t, "evt-negative-gift-value", &roomeventsv1.RoomGiftSent{
-		SenderUserId: 10001,
-		TargetUserId: 20002,
-		GiftId:       "broken-gift",
-		GiftCount:    1,
-		GiftValue:    -1,
-		CoinSpent:    0,
-	})
-
-	if _, err := svc.HandleRoomEvent(context.Background(), envelope); !xerr.IsCode(err, xerr.InvalidArgument) {
-		t.Fatalf("negative spend error=%v, want INVALID_ARGUMENT", err)
+	tests := []struct {
+		name      string
+		giftValue int64
+		coinSpent int64
+	}{
+		{name: "negative coin spent does not fallback", giftValue: 100, coinSpent: -1},
+		{name: "negative legacy gift value", giftValue: -1, coinSpent: 0},
 	}
-	if repository.calls != 0 || len(repository.events) != 0 {
-		t.Fatalf("negative spend must fail before repository: calls=%d events=%+v", repository.calls, repository.events)
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			repository := newRecordingTaskRepository()
+			svc := taskservice.New(repository, &fakeWalletClient{})
+			envelope := roomGiftEnvelope(t, "evt-negative-gift-value", &roomeventsv1.RoomGiftSent{
+				SenderUserId: 10001,
+				TargetUserId: 20002,
+				GiftId:       "broken-gift",
+				GiftCount:    1,
+				GiftValue:    test.giftValue,
+				CoinSpent:    test.coinSpent,
+			})
+
+			if _, err := svc.HandleRoomEvent(context.Background(), envelope); !xerr.IsCode(err, xerr.InvalidArgument) {
+				t.Fatalf("negative spend error=%v, want INVALID_ARGUMENT", err)
+			}
+			if repository.calls != 0 || len(repository.events) != 0 {
+				t.Fatalf("negative spend must fail before repository: calls=%d events=%+v", repository.calls, repository.events)
+			}
+		})
 	}
 }
 

services/activity-service/internal/storage/mysql/growth_repository.go

@@ -210,7 +210,7 @@ func (r *Repository) ConsumeLevelEvent(ctx context.Context, event domain.ValueEv
 		if attempt == growthTransactionMaxAttempts-1 {
 			break
 		}
-		// MQ 会并发回放同一热门用户的礼物事件；本地短退避先吸收瞬时锁冲突，避免每次 1213 都升级为 broker 秒级重试。
+		// MQ 会并发回放同一热门用户的礼物事件；本地短退避先吸收瞬时死锁冲突，避免每次 1213 都升级为 broker 秒级重试。
 		timer := time.NewTimer(growthTransactionRetryDelay(event.EventID, attempt))
 		select {
 		case <-ctx.Done():
@@ -224,7 +224,7 @@ func (r *Repository) ConsumeLevelEvent(ctx context.Context, event domain.ValueEv
 	return domain.EventResult{}, lastErr
 }
 
-// consumeLevelEventOnce 只执行一次完整事务；调用方只会在 MySQL 已回滚的 1213/1205 上重新 BeginTx。
+// consumeLevelEventOnce 只执行一次完整事务；调用方只会在 MySQL 已回滚的 1213 上重新 BeginTx。
 func (r *Repository) consumeLevelEventOnce(ctx context.Context, event domain.ValueEvent, nowMS int64) (domain.EventResult, error) {
 	if r == nil || r.db == nil {
 		return domain.EventResult{}, xerr.New(xerr.Unavailable, "mysql repository is not configured")
@@ -688,8 +688,9 @@ func isRetryableGrowthTransactionError(err error) bool {
 	if !errors.As(err, &mysqlErr) {
 		return false
 	}
-	// 1213 是死锁受害事务，1205 是锁等待超时；两者都保证当前语句/事务没有成功提交，允许整事务重建。
-	return mysqlErr.Number == 1213 || mysqlErr.Number == 1205
+	// 1213 会立即回滚死锁受害事务，适合短退避后本地重建。1205 可能已等待完整的
+	// innodb_lock_wait_timeout；在无 deadline 的 MQ 回调里重试它会让唯一消费协程继续占用数分钟，应交给 broker 延迟重投。
+	return mysqlErr.Number == 1213
 }
 
 func growthTransactionRetryDelay(eventID string, attempt int) time.Duration {

services/activity-service/internal/storage/mysql/growth_repository_retry_test.go

@@ -20,7 +20,7 @@ func TestIsRetryableGrowthTransactionError(t *testing.T) {
 	}{
 		{name: "deadlock", err: &mysqldriver.MySQLError{Number: 1213, Message: "deadlock"}, want: true},
 		{name: "wrapped deadlock", err: fmt.Errorf("consume growth event: %w", &mysqldriver.MySQLError{Number: 1213, Message: "deadlock"}), want: true},
-		{name: "lock wait timeout", err: &mysqldriver.MySQLError{Number: 1205, Message: "lock wait timeout"}, want: true},
+		{name: "lock wait timeout", err: &mysqldriver.MySQLError{Number: 1205, Message: "lock wait timeout"}, want: false},
 		{name: "duplicate key", err: &mysqldriver.MySQLError{Number: 1062, Message: "duplicate"}, want: false},
 		{name: "text only", err: errors.New("Error 1213: Deadlock found"), want: false},
 		{name: "context canceled", err: context.Canceled, want: false},