How to update without creating a whole new field using upsert in mongodb golang? - mongodb

Question

Okay, so. There is this field called bitfield and inside is a map. Everytime i set bits, for example set bit 5000, i'll get key 4096, but if i set bit 1000, then i'll get the key, just 0. However, i set both, 5000 and 0, so it should be both keys 0 and 4096. How can i update the existing field, without deleting the other data, so both keys 0 and 4096 exist?
func UpsertBitsArray(tx models.Transactions, sendingQrlAddress string) (error, string) {
ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
defer cancel()
optionss := options.Find().
SetProjection(bson.M{"bitfield": 1}).
SetLimit(1)
results, err := addressesCollections.Find(ctx, bson.M{"id": sendingQrlAddress}, optionss)
if err != nil {
return nil, "Success"
}
var bitfieldStruct []wallet.Wallet
err = results.All(ctx, &bitfieldStruct)
if err != nil {
return nil, "Success"
}
// signature, err := base64.StdEncoding.DecodeString(tx.Signature)
// if err != nil {
// glog.Info("%v", err)
// }
otsKeyIndex := big.NewInt(10000)
for _, bitfieldExist := range bitfieldStruct {
if bitfieldExist.Paged == nil {
fmt.Println("No array/bitfield, creating new one..")
bitfieldExist.Paged = bitfield.NewBig()
bitfieldExist.Paged.Set(otsKeyIndex)
filter := bson.D{{"id", sendingQrlAddress}}
update := bson.D{
{
Key: "$set",
Value: bson.D{
{Key: "bitfield", Value: bitfieldExist.Paged},
},
},
}
opts := options.Update().SetUpsert(true)
result, err := addressesCollections.UpdateOne(context.TODO(), filter, update, opts)
if err != nil {
glog.Info("%v", err)
}
fmt.Printf("Number of documents updated: %v\n", result.ModifiedCount)
fmt.Printf("Number of documents upserted: %v\n", result.UpsertedCount)
} else {
fmt.Println("Bitfield/array exists, setting it..")
bitfieldExist.Paged.Set(otsKeyIndex)
filter := bson.D{{"id", sendingQrlAddress}}
update := bson.D{
{
Key: "$set",
Value: bson.D{
{Key: "bitfield", Value: bitfieldExist.Paged},
},
},
}
opts := options.Update().SetUpsert(true)
result, err := addressesCollections.UpdateOne(context.TODO(), filter, update, opts)
if err != nil {
glog.Info("%v", err)
}
fmt.Printf("Number of documents updated: %v\n", result.ModifiedCount)
fmt.Printf("Number of documents upserted: %v\n", result.UpsertedCount)
}
}
return nil, "Success"
}
Here is what i mean:
Edit:
The wallet struct:
type Wallet struct {
_id primitive.ObjectID `json:"_id,omitempty"`
Id string `json:"id,omitempty"`
Amount int `json:"amount,omitempty"`
Paged bitfield.Big `json:"bitfield"`
}
What i'm storing:
package bitfield
import (
"math/big"
)
const (
fieldSize = 1024
)
type Big map[string]Bitfield
func NewBig() Big {
return make(map[string]Bitfield)
}
func (fields Big) Set(i *big.Int) {
number, pageNumber := indexOfBig(i, fieldSize)
page, exists := fields[pageNumber.String()]
if !exists {
page = New(fieldSize)
fields[pageNumber.String()] = page
}
page.Set(uint(number.Uint64()))
}