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package core
import (
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/logger"
"github.com/ethereum/go-ethereum/logger/glog"
"github.com/ethereum/go-ethereum/rlp"
)
var receiptsPre = []byte("receipts-")
// PutTransactions stores the transactions in the given database
func PutTransactions(db common.Database, block *types.Block, txs types.Transactions) {
for i, tx := range block.Transactions() {
rlpEnc, err := rlp.EncodeToBytes(tx)
if err != nil {
glog.V(logger.Debug).Infoln("Failed encoding tx", err)
return
}
db.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 {
glog.V(logger.Debug).Infoln("Failed encoding tx meta data", err)
return
}
db.Put(append(tx.Hash().Bytes(), 0x0001), rlpMeta)
}
}
// PutReceipts stores the receipts in the current database
func PutReceipts(db common.Database, receipts types.Receipts) error {
for _, receipt := range receipts {
storageReceipt := (*types.ReceiptForStorage)(receipt)
bytes, err := rlp.EncodeToBytes(storageReceipt)
if err != nil {
return err
}
err = db.Put(append(receiptsPre, receipt.TxHash[:]...), bytes)
if err != nil {
return err
}
}
return nil
}
// GetReceipt returns a receipt by hash
func GetReceipt(db common.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.Error).Infoln("GetReceipt err:", err)
}
return &receipt
}
// GetReceiptFromBlock returns all receipts with the given block
func GetReceiptsFromBlock(db common.Database, block *types.Block) types.Receipts {
// at some point we want:
//receipts := make(types.Receipts, len(block.Transactions()))
// but since we need to support legacy, we can't (yet)
var receipts types.Receipts
for _, tx := range block.Transactions() {
if receipt := GetReceipt(db, tx.Hash()); receipt != nil {
receipts = append(receipts, receipt)
}
}
return receipts
}
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