66 lines
1.7 KiB
Go
66 lines
1.7 KiB
Go
|
package vat_tune
|
||
|
|
|
||
|
|
import (
|
||
|
|
"bytes"
|
||
|
|
"encoding/json"
|
||
|
|
"errors"
|
||
|
|
"math/big"
|
||
|
|
|
||
|
|
"github.com/ethereum/go-ethereum/core/types"
|
||
|
|
|
||
|
|
"github.com/ethereum/go-ethereum/common"
|
||
|
|
"github.com/vulcanize/vulcanizedb/pkg/transformers/shared"
|
||
|
|
)
|
||
|
|
|
||
|
|
type Converter interface {
|
||
|
|
ToModels(ethLogs []types.Log) ([]VatTuneModel, error)
|
||
|
|
}
|
||
|
|
|
||
|
|
type VatTuneConverter struct{}
|
||
|
|
|
||
|
|
func (VatTuneConverter) ToModels(ethLogs []types.Log) ([]VatTuneModel, error) {
|
||
|
|
var models []VatTuneModel
|
||
|
|
for _, ethLog := range ethLogs {
|
||
|
|
err := verifyLog(ethLog)
|
||
|
|
if err != nil {
|
||
|
|
return nil, err
|
||
|
|
}
|
||
|
|
ilk := string(bytes.Trim(ethLog.Topics[1].Bytes(), "\x00"))
|
||
|
|
urn := common.BytesToAddress(ethLog.Topics[2].Bytes()[:common.AddressLength])
|
||
|
|
v := common.BytesToAddress(ethLog.Topics[3].Bytes()[:common.AddressLength])
|
||
|
|
wBytes := shared.GetDataBytesAtIndex(-3, ethLog.Data)
|
||
|
|
w := common.BytesToAddress(wBytes[:common.AddressLength])
|
||
|
|
dinkBytes := shared.GetDataBytesAtIndex(-2, ethLog.Data)
|
||
|
|
dink := big.NewInt(0).SetBytes(dinkBytes).String()
|
||
|
|
dartBytes := shared.GetDataBytesAtIndex(-1, ethLog.Data)
|
||
|
|
dart := big.NewInt(0).SetBytes(dartBytes).String()
|
||
|
|
|
||
|
|
raw, err := json.Marshal(ethLog)
|
||
|
|
if err != nil {
|
||
|
|
return nil, err
|
||
|
|
}
|
||
|
|
model := VatTuneModel{
|
||
|
|
Ilk: ilk,
|
||
|
|
Urn: urn.String(),
|
||
|
|
V: v.String(),
|
||
|
|
W: w.String(),
|
||
|
|
Dink: dink,
|
||
|
|
Dart: dart,
|
||
|
|
TransactionIndex: ethLog.TxIndex,
|
||
|
|
Raw: raw,
|
||
|
|
}
|
||
|
|
models = append(models, model)
|
||
|
|
}
|
||
|
|
return models, nil
|
||
|
|
}
|
||
|
|
|
||
|
|
func verifyLog(log types.Log) error {
|
||
|
|
if len(log.Topics) < 4 {
|
||
|
|
return errors.New("log missing topics")
|
||
|
|
}
|
||
|
|
if len(log.Data) < shared.DataItemLength {
|
||
|
|
return errors.New("log missing data")
|
||
|
|
}
|
||
|
|
return nil
|
||
|
|
}
|