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#17 avoid data race #18

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#17 avoid data race #18

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32 changes: 13 additions & 19 deletions models/discount.go
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Original file line number Diff line number Diff line change
Expand Up @@ -43,32 +43,26 @@ func (Discount) GetAll(ctx context.Context, sortby, order []string, offset, limi
return q
}

errc := make(chan error)
errc, totalCountc, discountc := make(chan error), make(chan int64, 1), make(chan []Discount, 1)
go func() {
v, err := queryBuilder().Count(&Discount{})
if err != nil {
errc <- err
return
}
totalCount = v
errc <- nil

totalCountc <- v
errc <- err
}()

go func() {
if err := queryBuilder().Limit(limit, offset).Find(&items); err != nil {
errc <- err
return
}
errc <- nil
var v []Discount
err := queryBuilder().Limit(limit, offset).Find(&v)
discountc <- v
errc <- err
}()

if err := <-errc; err != nil {
return 0, nil, err
}
if err := <-errc; err != nil {
return 0, nil, err
for i := 0; i < 2; i++ {
if err := <-errc; err != nil {
return 0, nil, err
}
}
totalCount = <-totalCountc
items = <-discountc
return
}
func (d *Discount) Update(ctx context.Context) (err error) {
Expand Down