67 lines
1.9 KiB
Go
67 lines
1.9 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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package helpers
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import (
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"math/big"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/common/hexutil"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/ethereum/go-ethereum/crypto"
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"github.com/vulcanize/vulcanizedb/pkg/core"
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)
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func ConvertToLog(watchedEvent core.WatchedEvent) types.Log {
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allTopics := []string{watchedEvent.Topic0, watchedEvent.Topic1, watchedEvent.Topic2, watchedEvent.Topic3}
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var nonNilTopics []string
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for _, topic := range allTopics {
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if topic != "" {
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nonNilTopics = append(nonNilTopics, topic)
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}
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}
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return types.Log{
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Address: common.HexToAddress(watchedEvent.Address),
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Topics: createTopics(nonNilTopics...),
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Data: hexutil.MustDecode(watchedEvent.Data),
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BlockNumber: uint64(watchedEvent.BlockNumber),
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TxHash: common.HexToHash(watchedEvent.TxHash),
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TxIndex: 0,
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BlockHash: common.HexToHash("0x0"),
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Index: uint(watchedEvent.Index),
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Removed: false,
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}
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}
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func createTopics(topics ...string) []common.Hash {
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var topicsArray []common.Hash
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for _, topic := range topics {
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topicsArray = append(topicsArray, common.HexToHash(topic))
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}
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return topicsArray
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}
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func BigFromString(n string) *big.Int {
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b := new(big.Int)
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b.SetString(n, 10)
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return b
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}
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func GenerateSignature(s string) string {
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eventSignature := []byte(s)
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hash := crypto.Keccak256Hash(eventSignature)
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return hash.Hex()
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}
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