forked from cerc-io/ipld-eth-server
92 lines
3.3 KiB
Go
92 lines
3.3 KiB
Go
// VulcanizeDB
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// Copyright © 2019 Vulcanize
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero 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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// This program 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 Affero General Public License for more details.
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package common
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import (
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"encoding/json"
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"math/big"
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"strconv"
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"strings"
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"github.com/ethereum/go-ethereum/common/hexutil"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/vulcanize/vulcanizedb/pkg/core"
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)
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type BlockConverter struct {
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transactionConverter TransactionConverter
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}
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func NewBlockConverter(transactionConverter TransactionConverter) BlockConverter {
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return BlockConverter{transactionConverter: transactionConverter}
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}
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func (bc BlockConverter) ToCoreBlock(gethBlock *types.Block) (core.Block, error) {
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transactions, err := bc.transactionConverter.ConvertBlockTransactionsToCore(gethBlock)
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if err != nil {
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return core.Block{}, err
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}
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coreBlock := core.Block{
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Difficulty: gethBlock.Difficulty().Int64(),
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ExtraData: hexutil.Encode(gethBlock.Extra()),
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GasLimit: gethBlock.GasLimit(),
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GasUsed: gethBlock.GasUsed(),
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Hash: gethBlock.Hash().Hex(),
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Miner: strings.ToLower(gethBlock.Coinbase().Hex()),
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Nonce: hexutil.Encode(gethBlock.Header().Nonce[:]),
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Number: gethBlock.Number().Int64(),
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ParentHash: gethBlock.ParentHash().Hex(),
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Size: gethBlock.Size().String(),
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Time: gethBlock.Time(),
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Transactions: transactions,
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UncleHash: gethBlock.UncleHash().Hex(),
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}
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coreBlock.Reward = CalcBlockReward(coreBlock, gethBlock.Uncles()).String()
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totalUncleReward, uncles := bc.ToCoreUncle(coreBlock, gethBlock.Uncles())
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coreBlock.UnclesReward = totalUncleReward.String()
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coreBlock.Uncles = uncles
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return coreBlock, nil
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}
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// Rewards for the miners of uncles is calculated as (U_n + 8 - B_n) * R / 8
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// Where U_n is the uncle block number, B_n is the parent block number and R is the static block reward at B_n
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// https://github.com/ethereum/go-ethereum/issues/1591
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// https://ethereum.stackexchange.com/questions/27172/different-uncles-reward
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// https://github.com/ethereum/homestead-guide/issues/399
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// Returns the total uncle reward and the individual processed uncles
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func (bc BlockConverter) ToCoreUncle(block core.Block, uncles []*types.Header) (*big.Int, []core.Uncle) {
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totalUncleRewards := new(big.Int)
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coreUncles := make([]core.Uncle, 0, len(uncles))
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for _, uncle := range uncles {
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thisUncleReward := calcUncleMinerReward(block.Number, uncle.Number.Int64())
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raw, _ := json.Marshal(uncle)
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coreUncle := core.Uncle{
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Miner: uncle.Coinbase.Hex(),
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Hash: uncle.Hash().Hex(),
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Raw: raw,
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Reward: thisUncleReward.String(),
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Timestamp: strconv.FormatUint(uncle.Time, 10),
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}
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coreUncles = append(coreUncles, coreUncle)
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totalUncleRewards.Add(totalUncleRewards, thisUncleReward)
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}
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return totalUncleRewards, coreUncles
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}
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