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https://github.com/ethereum/go-ethereum.git
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56 lines
2 KiB
Go
56 lines
2 KiB
Go
// Copyright 2018 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser 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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//
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// The go-ethereum library 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 Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package rawdb
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import (
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"github.com/XinFinOrg/XDPoSChain/common"
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"github.com/XinFinOrg/XDPoSChain/core/types"
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"github.com/XinFinOrg/XDPoSChain/ethdb"
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"github.com/XinFinOrg/XDPoSChain/log"
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"github.com/XinFinOrg/XDPoSChain/rlp"
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)
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type TxLookupEntry struct {
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BlockHash common.Hash
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BlockIndex uint64
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Index uint64
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}
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// WriteTxLookupEntriesByBlock stores a positional metadata for every transaction from
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// a block, enabling hash based transaction and receipt lookups.
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func WriteTxLookupEntriesByBlock(db ethdb.KeyValueWriter, block *types.Block) {
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// Iterate over each transaction and encode its metadata
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for i, tx := range block.Transactions() {
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entry := TxLookupEntry{
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BlockHash: block.Hash(),
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BlockIndex: block.NumberU64(),
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Index: uint64(i),
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}
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data, err := rlp.EncodeToBytes(entry)
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if err != nil {
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log.Crit("Failed to RLP encode TxLookupEntry", "err", err)
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}
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if err := db.Put(txLookupKey(tx.Hash()), data); err != nil {
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log.Crit("Failed to store tx lookup entry", "err", err)
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}
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}
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}
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// DeleteTxLookupEntry removes all transaction data associated with a hash.
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func DeleteTxLookupEntry(db ethdb.KeyValueWriter, hash common.Hash) {
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db.Delete(txLookupKey(hash))
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}
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