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// Copyright 2015 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 core
import (
"fmt"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/ethdb"
"github.com/ethereum/go-ethereum/logger"
"github.com/ethereum/go-ethereum/logger/glog"
"github.com/ethereum/go-ethereum/rlp"
"github.com/syndtr/goleveldb/leveldb"
)
var (
receiptsPre = []byte("receipts-")
blockReceiptsPre = []byte("receipts-block-")
)
// PutTransactions stores the transactions in the given database
func PutTransactions(db ethdb.Database, block *types.Block, txs types.Transactions) error {
batch := db.NewBatch()
for i, tx := range block.Transactions() {
rlpEnc, err := rlp.EncodeToBytes(tx)
if err != nil {
return fmt.Errorf("failed encoding tx: %v", err)
}
batch.Put(tx.Hash().Bytes(), rlpEnc)
var txExtra struct {
BlockHash common.Hash
BlockIndex uint64
Index uint64
}
txExtra.BlockHash = block.Hash()
txExtra.BlockIndex = block.NumberU64()
txExtra.Index = uint64(i)
rlpMeta, err := rlp.EncodeToBytes(txExtra)
if err != nil {
return fmt.Errorf("failed encoding tx meta data: %v", err)
}
batch.Put(append(tx.Hash().Bytes(), 0x0001), rlpMeta)
}
if err := batch.Write(); err != nil {
return fmt.Errorf("failed writing tx to db: %v", err)
}
return nil
}
func DeleteTransaction(db ethdb.Database, txHash common.Hash) {
db.Delete(txHash[:])
}
func GetTransaction(db ethdb.Database, txhash common.Hash) *types.Transaction {
data, _ := db.Get(txhash[:])
if len(data) != 0 {
var tx types.Transaction
if err := rlp.DecodeBytes(data, &tx); err != nil {
return nil
}
return &tx
}
return nil
}
// PutReceipts stores the receipts in the current database
func PutReceipts(db ethdb.Database, receipts types.Receipts) error {
batch := new(leveldb.Batch)
_, batchWrite := db.(*ethdb.LDBDatabase)
for _, receipt := range receipts {
storageReceipt := (*types.ReceiptForStorage)(receipt)
bytes, err := rlp.EncodeToBytes(storageReceipt)
if err != nil {
return err
}
if batchWrite {
batch.Put(append(receiptsPre, receipt.TxHash[:]...), bytes)
} else {
err = db.Put(append(receiptsPre, receipt.TxHash[:]...), bytes)
if err != nil {
return err
}
}
}
if db, ok := db.(*ethdb.LDBDatabase); ok {
if err := db.LDB().Write(batch, nil); err != nil {
return err
}
}
return nil
}
// Delete a receipts from the database
func DeleteReceipt(db ethdb.Database, txHash common.Hash) {
db.Delete(append(receiptsPre, txHash[:]...))
}
// GetReceipt returns a receipt by hash
func GetReceipt(db ethdb.Database, txHash common.Hash) *types.Receipt {
data, _ := db.Get(append(receiptsPre, txHash[:]...))
if len(data) == 0 {
return nil
}
var receipt types.Receipt
err := rlp.DecodeBytes(data, &receipt)
if err != nil {
glog.V(logger.Core).Infoln("GetReceipt err:", err)
}
return &receipt
}
// GetBlockReceipts returns the receipts generated by the transactions
// included in block's given hash.
func GetBlockReceipts(db ethdb.Database, hash common.Hash) types.Receipts {
data, _ := db.Get(append(blockReceiptsPre, hash[:]...))
if len(data) == 0 {
return nil
}
rs := []*types.ReceiptForStorage{}
if err := rlp.DecodeBytes(data, &rs); err != nil {
glog.V(logger.Error).Infof("invalid receipt array RLP for hash %x: %v", hash, err)
return nil
}
receipts := make(types.Receipts, len(rs))
for i, receipt := range rs {
receipts[i] = (*types.Receipt)(receipt)
}
return receipts
}
// PutBlockReceipts stores the block's transactions associated receipts
// and stores them by block hash in a single slice. This is required for
// forks and chain reorgs
func PutBlockReceipts(db ethdb.Database, hash common.Hash, receipts types.Receipts) error {
rs := make([]*types.ReceiptForStorage, len(receipts))
for i, receipt := range receipts {
rs[i] = (*types.ReceiptForStorage)(receipt)
}
bytes, err := rlp.EncodeToBytes(rs)
if err != nil {
return err
}
err = db.Put(append(blockReceiptsPre, hash[:]...), bytes)
if err != nil {
return err
}
return nil
}
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