forked from cerc-io/ipld-eth-server
73 lines
2.2 KiB
Go
73 lines
2.2 KiB
Go
// VulcanizeDB
|
|
// Copyright © 2019 Vulcanize
|
|
|
|
// This program is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Affero General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
|
|
// This program is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU Affero General Public License for more details.
|
|
|
|
// You should have received a copy of the GNU Affero General Public License
|
|
// along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
package helpers
|
|
|
|
import (
|
|
"math/big"
|
|
|
|
"github.com/ethereum/go-ethereum/common"
|
|
"github.com/ethereum/go-ethereum/common/hexutil"
|
|
"github.com/ethereum/go-ethereum/core/types"
|
|
"github.com/ethereum/go-ethereum/crypto"
|
|
|
|
"github.com/vulcanize/vulcanizedb/pkg/core"
|
|
)
|
|
|
|
// ConvertToLog converts a watched event to a log
|
|
func ConvertToLog(watchedEvent core.WatchedEvent) types.Log {
|
|
allTopics := []string{watchedEvent.Topic0, watchedEvent.Topic1, watchedEvent.Topic2, watchedEvent.Topic3}
|
|
var nonNilTopics []string
|
|
for _, topic := range allTopics {
|
|
if topic != "" {
|
|
nonNilTopics = append(nonNilTopics, topic)
|
|
}
|
|
}
|
|
return types.Log{
|
|
Address: common.HexToAddress(watchedEvent.Address),
|
|
Topics: createTopics(nonNilTopics...),
|
|
Data: hexutil.MustDecode(watchedEvent.Data),
|
|
BlockNumber: uint64(watchedEvent.BlockNumber),
|
|
TxHash: common.HexToHash(watchedEvent.TxHash),
|
|
TxIndex: 0,
|
|
BlockHash: common.HexToHash("0x0"),
|
|
Index: uint(watchedEvent.Index),
|
|
Removed: false,
|
|
}
|
|
}
|
|
|
|
func createTopics(topics ...string) []common.Hash {
|
|
var topicsArray []common.Hash
|
|
for _, topic := range topics {
|
|
topicsArray = append(topicsArray, common.HexToHash(topic))
|
|
}
|
|
return topicsArray
|
|
}
|
|
|
|
// BigFromString creates a big.Int from a string
|
|
func BigFromString(n string) *big.Int {
|
|
b := new(big.Int)
|
|
b.SetString(n, 10)
|
|
return b
|
|
}
|
|
|
|
// GenerateSignature returns the keccak256 hash hex of a string
|
|
func GenerateSignature(s string) string {
|
|
eventSignature := []byte(s)
|
|
hash := crypto.Keccak256Hash(eventSignature)
|
|
return hash.Hex()
|
|
}
|