ipld-eth-server/pkg/transformers/pit_file/stability_fee/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

63 lines
1.6 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 stability_fee
import (
"bytes"
"encoding/json"
"errors"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/types"
)
type Converter interface {
ToModels(ethLogs []types.Log) ([]PitFileStabilityFeeModel, error)
}
type PitFileStabilityFeeConverter struct{}
func (PitFileStabilityFeeConverter) ToModels(ethLogs []types.Log) ([]PitFileStabilityFeeModel, error) {
var models []PitFileStabilityFeeModel
for _, ethLog := range ethLogs {
err := verifyLog(ethLog)
if err != nil {
return nil, err
}
what := string(bytes.Trim(ethLog.Topics[2].Bytes(), "\x00"))
data := common.HexToAddress(ethLog.Topics[3].String()).Hex()
raw, err := json.Marshal(ethLog)
if err != nil {
return nil, err
}
model := PitFileStabilityFeeModel{
What: what,
Data: data,
TransactionIndex: ethLog.TxIndex,
Raw: raw,
}
models = append(models, model)
}
return models, nil
}
func verifyLog(log types.Log) error {
if len(log.Topics) < 3 {
return errors.New("log missing topics")
}
return nil
}