ipld-eth-server/pkg/transformers/flip_kick/converter.go
Elizabeth b0cd852aa3 Flop deal (#39)
*Refactor deal transformer to take in several contract addresses
* Add flop address to deal transformer
2018-09-27 10:12:29 -05:00

95 lines
2.7 KiB
Go

// Copyright 2018 Vulcanize
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package flip_kick
import (
"encoding/json"
"errors"
"time"
"github.com/ethereum/go-ethereum/accounts/abi/bind"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/types"
"github.com/vulcanize/vulcanizedb/pkg/geth"
"github.com/vulcanize/vulcanizedb/pkg/transformers/shared"
)
type Converter interface {
ToEntities(contractAbi string, ethLogs []types.Log) ([]FlipKickEntity, error)
ToModels(flipKicks []FlipKickEntity) ([]FlipKickModel, error)
}
type FlipKickConverter struct{}
func (FlipKickConverter) ToEntities(contractAbi string, ethLogs []types.Log) (results []FlipKickEntity, err error) {
for _, ethLog := range ethLogs {
entity := &FlipKickEntity{}
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
results = append(results, *entity)
}
return results, nil
}
func (FlipKickConverter) ToModels(flipKicks []FlipKickEntity) (results []FlipKickModel, err error) {
for _, flipKick := range flipKicks {
if flipKick.Id == nil {
return nil, errors.New("FlipKick log ID cannot be nil.")
}
id := flipKick.Id.String()
lot := shared.BigIntToString(flipKick.Lot)
bid := shared.BigIntToString(flipKick.Bid)
gal := flipKick.Gal.String()
endValue := shared.BigIntToInt64(flipKick.End)
end := time.Unix(endValue, 0)
urn := common.BytesToAddress(flipKick.Urn[:common.AddressLength]).String()
tab := shared.BigIntToString(flipKick.Tab)
rawLogJson, err := json.Marshal(flipKick.Raw)
if err != nil {
return nil, err
}
rawLogString := string(rawLogJson)
model := FlipKickModel{
BidId: id,
Lot: lot,
Bid: bid,
Gal: gal,
End: end,
Urn: urn,
Tab: tab,
TransactionIndex: flipKick.TransactionIndex,
Raw: rawLogString,
}
results = append(results, model)
}
return results, err
}