forked from cerc-io/ipld-eth-server
82 lines
2.5 KiB
Go
82 lines
2.5 KiB
Go
// VulcanizeDB
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// Copyright © 2018 Vulcanize
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package frob
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import (
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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/core/types"
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"github.com/vulcanize/vulcanizedb/pkg/transformers/shared"
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"github.com/vulcanize/vulcanizedb/pkg/geth"
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)
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type FrobConverter struct{}
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func (FrobConverter) 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 := FrobEntity{}
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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, "Frob", ethLog)
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if err != nil {
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return entities, err
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}
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entity.LogIndex = ethLog.Index
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entity.TransactionIndex = ethLog.TxIndex
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entity.Raw = ethLog
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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 (FrobConverter) ToModels(entities []interface{}) ([]interface{}, error) {
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var models []interface{}
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for _, entity := range entities {
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frobEntity, ok := entity.(FrobEntity)
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if !ok {
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return nil, fmt.Errorf("entity of type %T, not %T", entity, FrobEntity{})
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}
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rawLog, err := json.Marshal(frobEntity.Raw)
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if err != nil {
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return nil, err
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}
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model := FrobModel{
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Ilk: shared.GetHexWithoutPrefix(frobEntity.Ilk[:]),
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Urn: shared.GetHexWithoutPrefix(frobEntity.Urn[:]),
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Ink: frobEntity.Ink.String(),
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Art: frobEntity.Art.String(),
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Dink: frobEntity.Dink.String(),
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Dart: frobEntity.Dart.String(),
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IArt: frobEntity.IArt.String(),
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LogIndex: frobEntity.LogIndex,
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TransactionIndex: frobEntity.TransactionIndex,
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Raw: rawLog,
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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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