78 lines
2.1 KiB
Go
78 lines
2.1 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 tend
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import (
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"encoding/json"
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"errors"
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"github.com/vulcanize/vulcanizedb/pkg/transformers/shared"
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"math/big"
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"github.com/ethereum/go-ethereum/core/types"
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)
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type TendConverter struct{}
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func (TendConverter) ToModels(ethLogs []types.Log) (results []interface{}, err error) {
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for _, ethLog := range ethLogs {
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err := validateLog(ethLog)
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if err != nil {
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return nil, err
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}
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bidId := ethLog.Topics[2].Big()
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guy := shared.GetHexWithoutPrefix(ethLog.Topics[1].Bytes())
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lot := ethLog.Topics[3].Big().String()
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lastDataItemStartIndex := len(ethLog.Data) - 32
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lastItem := ethLog.Data[lastDataItemStartIndex:]
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last := big.NewInt(0).SetBytes(lastItem)
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bidValue := last.String()
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transactionIndex := ethLog.TxIndex
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logIndex := ethLog.Index
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rawLog, err := json.Marshal(ethLog)
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if err != nil {
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return nil, err
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}
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model := TendModel{
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BidId: bidId.String(),
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Lot: lot,
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Bid: bidValue,
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Guy: guy,
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LogIndex: logIndex,
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TransactionIndex: transactionIndex,
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Raw: rawLog,
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}
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results = append(results, model)
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}
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return results, err
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}
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func validateLog(ethLog types.Log) error {
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if len(ethLog.Data) <= 0 {
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return errors.New("tend log note data is empty")
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}
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if len(ethLog.Topics) < 4 {
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return errors.New("tend log does not contain expected topics")
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}
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return nil
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}
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