ipld-eth-server/pkg/transformers/frob/converter.go
Rob Mulholand bf44ec614a Log checked headers for MCD events (#43)
* Log checked headers for Bite events

* Log checked headers for Drip drip events

* Log checked headers for Drip file events

- mark headers checked for 3 implementations of file on the Drip contract

* Log checked headers for Frob frob events

* Log checked headers for Pit file events

- mark headers checked for 3 implementations of file on the Pit contract

* Log checked headers for Vat init events
2018-10-02 17:25:38 -05:00

73 lines
2.1 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 frob
import (
"github.com/ethereum/go-ethereum/accounts/abi/bind"
"github.com/ethereum/go-ethereum/core/types"
"encoding/json"
"github.com/vulcanize/vulcanizedb/pkg/geth"
)
type Converter interface {
ToEntities(contractAbi string, ethLogs []types.Log) ([]FrobEntity, error)
ToModels(entities []FrobEntity) ([]FrobModel, error)
}
type FrobConverter struct{}
func (FrobConverter) ToEntities(contractAbi string, ethLogs []types.Log) ([]FrobEntity, error) {
var entities []FrobEntity
for _, ethLog := range ethLogs {
entity := FrobEntity{}
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, "Frob", ethLog)
entity.TransactionIndex = ethLog.TxIndex
entity.Raw = ethLog
entities = append(entities, entity)
}
return entities, nil
}
func (FrobConverter) ToModels(entities []FrobEntity) ([]FrobModel, error) {
var models []FrobModel
for _, entity := range entities {
rawLog, err := json.Marshal(entity.Raw)
if err != nil {
return nil, err
}
model := FrobModel{
Ilk: entity.Ilk[:],
Urn: entity.Urn[:],
Ink: entity.Ink.String(),
Art: entity.Art.String(),
Dink: entity.Dink.String(),
Dart: entity.Dart.String(),
IArt: entity.IArt.String(),
TransactionIndex: entity.TransactionIndex,
Raw: rawLog,
}
models = append(models, model)
}
return models, nil
}