ipld-eth-server/pkg/transformers/flap_kick/converter.go
2019-01-24 14:41:30 -06:00

92 lines
2.7 KiB
Go

// VulcanizeDB
// Copyright © 2018 Vulcanize
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package flap_kick
import (
"encoding/json"
"errors"
"fmt"
"github.com/ethereum/go-ethereum/accounts/abi/bind"
"github.com/ethereum/go-ethereum/core/types"
"github.com/vulcanize/vulcanizedb/pkg/geth"
"github.com/vulcanize/vulcanizedb/pkg/transformers/shared"
"time"
)
type FlapKickConverter struct {
}
func (FlapKickConverter) ToEntities(contractAbi string, ethLogs []types.Log) ([]interface{}, error) {
var entities []interface{}
for _, ethLog := range ethLogs {
entity := &FlapKickEntity{}
address := ethLog.Address
abi, err := geth.ParseAbi(contractAbi)
if err != nil {
return nil, err
}
contract := bind.NewBoundContract(address, abi, nil, nil, nil)
err = contract.UnpackLog(entity, "Kick", ethLog)
if err != nil {
return nil, err
}
entity.Raw = ethLog
entity.TransactionIndex = ethLog.TxIndex
entity.LogIndex = ethLog.Index
entities = append(entities, *entity)
}
return entities, nil
}
func (FlapKickConverter) ToModels(entities []interface{}) ([]interface{}, error) {
var models []interface{}
for _, entity := range entities {
flapKickEntity, ok := entity.(FlapKickEntity)
if !ok {
return nil, fmt.Errorf("entity of type %T, not %T", entity, FlapKickEntity{})
}
if flapKickEntity.Id == nil {
return nil, errors.New("FlapKick log ID cannot be nil.")
}
id := flapKickEntity.Id.String()
lot := shared.BigIntToString(flapKickEntity.Lot)
bid := shared.BigIntToString(flapKickEntity.Bid)
gal := flapKickEntity.Gal.String()
endValue := shared.BigIntToInt64(flapKickEntity.End)
end := time.Unix(endValue, 0)
rawLog, err := json.Marshal(flapKickEntity.Raw)
if err != nil {
return nil, err
}
model := FlapKickModel{
BidId: id,
Lot: lot,
Bid: bid,
Gal: gal,
End: end,
TransactionIndex: flapKickEntity.TransactionIndex,
LogIndex: flapKickEntity.LogIndex,
Raw: rawLog,
}
models = append(models, model)
}
return models, nil
}