120 lines
4.6 KiB
Go
120 lines
4.6 KiB
Go
// Copyright 2018 The go-ethereum Authors
|
|
// This file is part of the go-ethereum library.
|
|
//
|
|
// The go-ethereum library is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Lesser General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// The go-ethereum library 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 Lesser General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Lesser General Public License
|
|
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
package rawdb
|
|
|
|
import (
|
|
"encoding/binary"
|
|
|
|
"github.com/ethereum/go-ethereum/common"
|
|
"github.com/ethereum/go-ethereum/core/types"
|
|
"github.com/ethereum/go-ethereum/log"
|
|
"github.com/ethereum/go-ethereum/rlp"
|
|
)
|
|
|
|
// ReadTxLookupEntry retrieves the positional metadata associated with a transaction
|
|
// hash to allow retrieving the transaction or receipt by hash.
|
|
func ReadTxLookupEntry(db DatabaseReader, hash common.Hash) (common.Hash, uint64, uint64) {
|
|
data, _ := db.Get(append(txLookupPrefix, hash.Bytes()...))
|
|
if len(data) == 0 {
|
|
return common.Hash{}, 0, 0
|
|
}
|
|
var entry TxLookupEntry
|
|
if err := rlp.DecodeBytes(data, &entry); err != nil {
|
|
log.Error("Invalid transaction lookup entry RLP", "hash", hash, "err", err)
|
|
return common.Hash{}, 0, 0
|
|
}
|
|
return entry.BlockHash, entry.BlockIndex, entry.Index
|
|
}
|
|
|
|
// WriteTxLookupEntries stores a positional metadata for every transaction from
|
|
// a block, enabling hash based transaction and receipt lookups.
|
|
func WriteTxLookupEntries(db DatabaseWriter, block *types.Block) {
|
|
for i, tx := range block.Transactions() {
|
|
entry := TxLookupEntry{
|
|
BlockHash: block.Hash(),
|
|
BlockIndex: block.NumberU64(),
|
|
Index: uint64(i),
|
|
}
|
|
data, err := rlp.EncodeToBytes(entry)
|
|
if err != nil {
|
|
log.Crit("Failed to encode transaction lookup entry", "err", err)
|
|
}
|
|
if err := db.Put(append(txLookupPrefix, tx.Hash().Bytes()...), data); err != nil {
|
|
log.Crit("Failed to store transaction lookup entry", "err", err)
|
|
}
|
|
}
|
|
}
|
|
|
|
// DeleteTxLookupEntry removes all transaction data associated with a hash.
|
|
func DeleteTxLookupEntry(db DatabaseDeleter, hash common.Hash) {
|
|
db.Delete(append(txLookupPrefix, hash.Bytes()...))
|
|
}
|
|
|
|
// ReadTransaction retrieves a specific transaction from the database, along with
|
|
// its added positional metadata.
|
|
func ReadTransaction(db DatabaseReader, hash common.Hash) (*types.Transaction, common.Hash, uint64, uint64) {
|
|
blockHash, blockNumber, txIndex := ReadTxLookupEntry(db, hash)
|
|
if blockHash == (common.Hash{}) {
|
|
return nil, common.Hash{}, 0, 0
|
|
}
|
|
body := ReadBody(db, blockHash, blockNumber)
|
|
if body == nil || len(body.Transactions) <= int(txIndex) {
|
|
log.Error("Transaction referenced missing", "number", blockNumber, "hash", blockHash, "index", txIndex)
|
|
return nil, common.Hash{}, 0, 0
|
|
}
|
|
return body.Transactions[txIndex], blockHash, blockNumber, txIndex
|
|
}
|
|
|
|
// ReadReceipt retrieves a specific transaction receipt from the database, along with
|
|
// its added positional metadata.
|
|
func ReadReceipt(db DatabaseReader, hash common.Hash) (*types.Receipt, common.Hash, uint64, uint64) {
|
|
blockHash, blockNumber, receiptIndex := ReadTxLookupEntry(db, hash)
|
|
if blockHash == (common.Hash{}) {
|
|
return nil, common.Hash{}, 0, 0
|
|
}
|
|
receipts := ReadReceipts(db, blockHash, blockNumber)
|
|
if len(receipts) <= int(receiptIndex) {
|
|
log.Error("Receipt refereced missing", "number", blockNumber, "hash", blockHash, "index", receiptIndex)
|
|
return nil, common.Hash{}, 0, 0
|
|
}
|
|
return receipts[receiptIndex], blockHash, blockNumber, receiptIndex
|
|
}
|
|
|
|
// ReadBloomBits retrieves the compressed bloom bit vector belonging to the given
|
|
// section and bit index from the.
|
|
func ReadBloomBits(db DatabaseReader, bit uint, section uint64, head common.Hash) ([]byte, error) {
|
|
key := append(append(bloomBitsPrefix, make([]byte, 10)...), head.Bytes()...)
|
|
|
|
binary.BigEndian.PutUint16(key[1:], uint16(bit))
|
|
binary.BigEndian.PutUint64(key[3:], section)
|
|
|
|
return db.Get(key)
|
|
}
|
|
|
|
// WriteBloomBits stores the compressed bloom bits vector belonging to the given
|
|
// section and bit index.
|
|
func WriteBloomBits(db DatabaseWriter, bit uint, section uint64, head common.Hash, bits []byte) {
|
|
key := append(append(bloomBitsPrefix, make([]byte, 10)...), head.Bytes()...)
|
|
|
|
binary.BigEndian.PutUint16(key[1:], uint16(bit))
|
|
binary.BigEndian.PutUint64(key[3:], section)
|
|
|
|
if err := db.Put(key, bits); err != nil {
|
|
log.Crit("Failed to store bloom bits", "err", err)
|
|
}
|
|
}
|