61 lines
2.2 KiB
Go
61 lines
2.2 KiB
Go
// 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 watcher
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import (
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/crypto"
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"github.com/vulcanize/vulcanizedb/libraries/shared/fetcher"
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"github.com/vulcanize/vulcanizedb/libraries/shared/storage"
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"github.com/vulcanize/vulcanizedb/libraries/shared/transformer"
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"github.com/vulcanize/vulcanizedb/pkg/datastore/postgres"
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)
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type GethStorageWatcher struct {
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StorageWatcher
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}
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func NewGethStorageWatcher(fetcher fetcher.IStorageFetcher, db *postgres.DB) GethStorageWatcher {
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queue := storage.NewStorageQueue(db)
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transformers := make(map[common.Address]transformer.StorageTransformer)
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keccakAddressTransformers := make(map[common.Address]transformer.StorageTransformer)
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storageWatcher := StorageWatcher{
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db: db,
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StorageFetcher: fetcher,
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Queue: queue,
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Transformers: transformers,
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KeccakAddressTransformers: keccakAddressTransformers,
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}
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storageWatcher.transformerGetter = storageWatcher.getTransformerForGethWatcher
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return GethStorageWatcher{StorageWatcher: storageWatcher}
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}
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func (storageWatcher StorageWatcher) getTransformerForGethWatcher(contractAddress common.Address) (transformer.StorageTransformer, bool) {
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storageTransformer, ok := storageWatcher.KeccakAddressTransformers[contractAddress]
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if ok {
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return storageTransformer, ok
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} else {
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for address, transformer := range storageWatcher.Transformers {
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keccakOfTransformerAddress := common.BytesToAddress(crypto.Keccak256(address[:]))
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if keccakOfTransformerAddress == contractAddress {
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storageWatcher.KeccakAddressTransformers[contractAddress] = transformer
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return transformer, true
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}
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}
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}
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return nil, false
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}
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