Roy Crihfield
b8fec4b571
Adds a method to perform full-state snapshots by diffing against an empty state trie. This replicates the functionality of `ipld-eth-state-snapshot`, so that code can use this as a library; see: cerc-io/ipld-eth-state-snapshot#1 Note that due to how incremental diffs are processed (updates are processed after the trie has been traversed) the iterator state doesn't fully capture the progress of the diff, so it's not currently feasible to state diffs this way. Full snapshots don't have to worry about updated accounts, so we can support them. Co-authored-by: Thomas E Lackey <telackey@bozemanpass.com> Reviewed-on: #15
89 lines
2.5 KiB
Go
89 lines
2.5 KiB
Go
// VulcanizeDB
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// Copyright © 2019 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 ipld
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import (
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"github.com/ethereum/go-ethereum/core/types"
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)
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// FromBlockAndReceipts takes a block and processes it
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// to return it a set of IPLD nodes for further processing.
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func FromBlockAndReceipts(block *types.Block, receipts []*types.Receipt) ([]*EthTx, []*EthReceipt, [][]*EthLog, error) {
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// Process the txs
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txNodes, err := processTransactions(block.Transactions())
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if err != nil {
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return nil, nil, nil, err
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}
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// Process the receipts and logs
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rctNodes, logNodes, err := processReceiptsAndLogs(receipts)
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return txNodes, rctNodes, logNodes, err
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}
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// processTransactions will take the found transactions in a parsed block body
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// to return IPLD node slices for eth-tx
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func processTransactions(txs []*types.Transaction) ([]*EthTx, error) {
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var ethTxNodes []*EthTx
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for _, tx := range txs {
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ethTx, err := NewEthTx(tx)
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if err != nil {
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return nil, err
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}
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ethTxNodes = append(ethTxNodes, ethTx)
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}
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return ethTxNodes, nil
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}
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// processReceiptsAndLogs will take in receipts
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// to return IPLD node slices for eth-rct and eth-log
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func processReceiptsAndLogs(rcts []*types.Receipt) ([]*EthReceipt, [][]*EthLog, error) {
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// Pre allocating memory.
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ethRctNodes := make([]*EthReceipt, len(rcts))
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ethLogNodes := make([][]*EthLog, len(rcts))
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for idx, rct := range rcts {
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logNodes, err := processLogs(rct.Logs)
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if err != nil {
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return nil, nil, err
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}
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ethRct, err := NewReceipt(rct)
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if err != nil {
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return nil, nil, err
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}
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ethRctNodes[idx] = ethRct
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ethLogNodes[idx] = logNodes
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}
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return ethRctNodes, ethLogNodes, nil
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}
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func processLogs(logs []*types.Log) ([]*EthLog, error) {
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logNodes := make([]*EthLog, len(logs))
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for idx, log := range logs {
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logNode, err := NewLog(log)
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if err != nil {
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return nil, err
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}
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logNodes[idx] = logNode
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}
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return logNodes, nil
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}
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