forked from cerc-io/ipld-eth-server
d1ee501f12
* Use transformer factory for Bite - introduces separate transformer factory for non-LogNote events - converter includes `ToEntities` for events defined via ABI * Updates after rebasing with staging
98 lines
2.7 KiB
Go
98 lines
2.7 KiB
Go
/*
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* Copyright 2018 Vulcanize
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package bite
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import (
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"bytes"
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"encoding/json"
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"fmt"
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"github.com/ethereum/go-ethereum/accounts/abi/bind"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/vulcanize/vulcanizedb/pkg/geth"
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"github.com/vulcanize/vulcanizedb/pkg/transformers/shared"
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)
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type BiteConverter struct{}
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func (BiteConverter) ToEntities(contractAbi string, ethLogs []types.Log) ([]interface{}, error) {
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var entities []interface{}
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for _, ethLog := range ethLogs {
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entity := &BiteEntity{}
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address := ethLog.Address
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abi, err := geth.ParseAbi(contractAbi)
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if err != nil {
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return nil, err
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}
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contract := bind.NewBoundContract(address, abi, nil, nil, nil)
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err = contract.UnpackLog(entity, "Bite", ethLog)
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if err != nil {
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return nil, err
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}
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entity.Raw = ethLog
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entity.LogIndex = ethLog.Index
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entity.TransactionIndex = ethLog.TxIndex
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entities = append(entities, *entity)
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}
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return entities, nil
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}
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func (converter BiteConverter) ToModels(entities []interface{}) ([]interface{}, error) {
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var models []interface{}
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for _, entity := range entities {
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biteEntity, ok := entity.(BiteEntity)
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if !ok {
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return nil, fmt.Errorf("entity of type %T, not %T", entity, BiteEntity{})
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}
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ilk := string(bytes.Trim(biteEntity.Ilk[:], "\x00"))
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urn := common.BytesToAddress(biteEntity.Urn[:]).String()
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ink := biteEntity.Ink
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art := biteEntity.Art
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iArt := biteEntity.IArt
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tab := biteEntity.Tab
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flip := biteEntity.Flip
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logIdx := biteEntity.LogIndex
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txIdx := biteEntity.TransactionIndex
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rawLogJson, err := json.Marshal(biteEntity.Raw)
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rawLogString := string(rawLogJson)
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if err != nil {
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return nil, err
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}
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model := BiteModel{
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Ilk: ilk,
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Urn: urn,
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Ink: shared.BigIntToString(ink),
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Art: shared.BigIntToString(art),
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IArt: shared.BigIntToString(iArt),
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Tab: shared.BigIntToString(tab),
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NFlip: shared.BigIntToString(flip),
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LogIndex: logIdx,
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TransactionIndex: txIdx,
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Raw: rawLogString,
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}
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models = append(models, model)
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}
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return models, nil
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}
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