ipld-eth-server/pkg/transformers/flap_kick/converter.go
2018-11-07 10:52:55 -06:00

90 lines
2.5 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 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
}