ipld-eth-server/pkg/transformers/bite/converter.go

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/*
* 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 bite
import (
"encoding/json"
"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/utilities"
)
type Converter interface {
ToEntity(contractAddress string, contractAbi string, ethLog types.Log) (BiteEntity, error)
ToModel(flipKick BiteEntity) (BiteModel, error)
}
type BiteConverter struct{}
func (BiteConverter) ToEntity(contractAddress string, contractAbi string, ethLog types.Log) (BiteEntity, error) {
entity := BiteEntity{}
address := common.HexToAddress(contractAddress)
abi, err := geth.ParseAbi(contractAbi)
if err != nil {
return entity, err
}
contract := bind.NewBoundContract(address, abi, nil, nil, nil)
err = contract.UnpackLog(&entity, "Bite", ethLog)
if err != nil {
return entity, err
}
entity.Raw = ethLog
return entity, nil
}
func (converter BiteConverter) ToModel(entity BiteEntity) (BiteModel, error) {
id := entity.Id.String()
ilk := entity.Ilk[:]
lad := entity.Lad[:]
ink := entity.Ink.String()
art := entity.Art.String()
iArt := entity.IArt.String()
tab := entity.Tab.String()
flip := entity.Flip.String()
txIdx := entity.TransactionIndex
rawLogJson, err := json.Marshal(entity.Raw)
rawLogString := string(rawLogJson)
if err != nil {
return BiteModel{}, err
}
return BiteModel{
Id: utilities.ConvertNilToEmptyString(id),
Ilk: ilk,
Lad: lad,
Ink: utilities.ConvertNilToEmptyString(ink),
Art: utilities.ConvertNilToEmptyString(art),
IArt: utilities.ConvertNilToEmptyString(iArt),
Tab: utilities.ConvertNilToEmptyString(tab),
Flip: utilities.ConvertNilToEmptyString(flip),
TransactionIndex: txIdx,
Raw: rawLogString,
}, nil
}