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path: root/core/transaction_util.go
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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"
)

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)
    }
}

func PutReceipts(db common.Database, hash common.Hash, receipts types.Receipts) error {
    storageReceipts := make([]*types.ReceiptForStorage, len(receipts))
    for i, receipt := range receipts {
        storageReceipts[i] = (*types.ReceiptForStorage)(receipt)
    }

    bytes, err := rlp.EncodeToBytes(storageReceipts)
    if err != nil {
        return err
    }

    db.Put(append(receiptsPre, hash[:]...), bytes)

    return nil
}