ipld-eth-server/pkg/transformers/vat_heal/converter.go
Elizabeth d522d33531 Update vat heal to use transformer factory (#88)
* Update vat heal to use transformer factory
2018-10-26 11:40:24 -05:00

68 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 vat_heal
import (
"encoding/json"
"errors"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/types"
)
type VatHealConverter struct{}
func (VatHealConverter) ToModels(ethLogs []types.Log) ([]interface{}, error) {
var models []interface{}
for _, ethLog := range ethLogs {
err := verifyLog(ethLog)
if err != nil {
return nil, err
}
urn := common.BytesToAddress(ethLog.Topics[1].Bytes())
v := common.BytesToAddress(ethLog.Topics[2].Bytes())
radInt := ethLog.Topics[3].Big()
if err != nil {
return nil, err
}
rawLogJson, err := json.Marshal(ethLog)
if err != nil {
return nil, err
}
model := VatHealModel{
Urn: urn.String(),
V: v.String(),
Rad: radInt.String(),
LogIndex: ethLog.Index,
TransactionIndex: ethLog.TxIndex,
Raw: rawLogJson,
}
models = append(models, model)
}
return models, nil
}
func verifyLog(log types.Log) error {
if len(log.Topics) < 4 {
return errors.New("log missing topics")
}
return nil
}