/
config.go
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/
config.go
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// Copyright 2021 The go-aoa Authors
// This file is part of the go-aoa library.
//
// The the go-aoa 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 the go-aoa 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-aoa library. If not, see <http://www.gnu.org/licenses/>.
package params
import (
"fmt"
"github.com/Aurorachain-io/go-aoa/common"
"math/big"
)
var (
MainnetGenesisHash = common.HexToHash("") // Mainnet genesis hash to enforce below configs on
TestnetGenesisHash = common.HexToHash("") // Testnet genesis hash to enforce below configs on
)
var (
// MainnetChainConfig is the chain parameters to run a node on the main network.
MainnetChainConfig = &ChainConfig{
ChainId: big.NewInt(2),
ByzantiumBlock: big.NewInt(4370000),
FrontierBlockReward: big.NewInt(5e+18),
ByzantiumBlockReward: big.NewInt(1e+18),
MaxElectDelegate: big.NewInt(101),
BlockInterval: big.NewInt(10),
}
// TestnetChainConfig contains the chain parameters to run a node on the Ropsten test network.
TestnetChainConfig = &ChainConfig{
ChainId: big.NewInt(3),
ByzantiumBlock: big.NewInt(1700000),
FrontierBlockReward: big.NewInt(5e+18),
ByzantiumBlockReward: big.NewInt(2e+18),
MaxElectDelegate: big.NewInt(101),
BlockInterval: big.NewInt(10),
}
// chainId must between 1 ~ 255
AllDacchainProtocolChanges = &ChainConfig{
ChainId: big.NewInt(60),
ByzantiumBlock: big.NewInt(10000),
FrontierBlockReward: big.NewInt(5e+18),
ByzantiumBlockReward: big.NewInt(1e+18),
MaxElectDelegate: big.NewInt(1),
BlockInterval: big.NewInt(10),
}
TestChainConfig = &ChainConfig{
ChainId: big.NewInt(1),
ByzantiumBlock: big.NewInt(0),
}
)
// ChainConfig is the core config which determines the blockchain settings.
//
// ChainConfig is stored in the database on a per block basis. This means
// that any network, identified by its genesis block, can have its own
// set of configuration options.
type ChainConfig struct {
ChainId *big.Int `json:"chainId"` // Chain id identifies the current chain and is used for replay protection
ByzantiumBlock *big.Int `json:"byzantiumBlock,omitempty"` // Byzantium switch block (nil = no fork, 0 = already on byzantium)
FrontierBlockReward *big.Int // Block reward in wei for successfully produce a block
ByzantiumBlockReward *big.Int // Block reward in wei for successfully produce a block upward from Byzantium
MaxElectDelegate *big.Int // dpos max elect delegate number
BlockInterval *big.Int
}
// String implements the fmt.Stringer interface.
func (c *ChainConfig) String() string {
return fmt.Sprintf("{ChainID: %v Byzantium: %v Engine: %v}",
c.ChainId,
c.ByzantiumBlock,
"DPOS-BFT",
)
}
// CheckCompatible checks whether scheduled fork transitions have been imported
// with a mismatching chain configuration.
func (c *ChainConfig) CheckCompatible(newcfg *ChainConfig, height uint64) *ConfigCompatError {
bhead := new(big.Int).SetUint64(height)
// Iterate checkCompatible to find the lowest conflict.
var lasterr *ConfigCompatError
for {
err := c.checkCompatible(newcfg, bhead)
if err == nil || (lasterr != nil && err.RewindTo == lasterr.RewindTo) {
break
}
lasterr = err
bhead.SetUint64(err.RewindTo)
}
return lasterr
}
func (c *ChainConfig) checkCompatible(newcfg *ChainConfig, head *big.Int) *ConfigCompatError {
if isForkIncompatible(c.ByzantiumBlock, newcfg.ByzantiumBlock, head) {
return newCompatError("Byzantium fork block", c.ByzantiumBlock, newcfg.ByzantiumBlock)
}
return nil
}
// isForkIncompatible returns true if a fork scheduled at s1 cannot be rescheduled to
// block s2 because head is already past the fork.
func isForkIncompatible(s1, s2, head *big.Int) bool {
return (isForked(s1, head) || isForked(s2, head)) && !configNumEqual(s1, s2)
}
// isForked returns whether a fork scheduled at block s is active at the given head block.
func isForked(s, head *big.Int) bool {
if s == nil || head == nil {
return false
}
return s.Cmp(head) <= 0
}
func configNumEqual(x, y *big.Int) bool {
if x == nil {
return y == nil
}
if y == nil {
return x == nil
}
return x.Cmp(y) == 0
}
// ConfigCompatError is raised if the locally-stored blockchain is initialised with a
// ChainConfig that would alter the past.
type ConfigCompatError struct {
What string
// block numbers of the stored and new configurations
StoredConfig, NewConfig *big.Int
// the block number to which the local chain must be rewound to correct the error
RewindTo uint64
}
func newCompatError(what string, storedblock, newblock *big.Int) *ConfigCompatError {
var rew *big.Int
switch {
case storedblock == nil:
rew = newblock
case newblock == nil || storedblock.Cmp(newblock) < 0:
rew = storedblock
default:
rew = newblock
}
err := &ConfigCompatError{what, storedblock, newblock, 0}
if rew != nil && rew.Sign() > 0 {
err.RewindTo = rew.Uint64() - 1
}
return err
}
func (err *ConfigCompatError) Error() string {
return fmt.Sprintf("mismatching %s in database (have %d, want %d, rewindto %d)", err.What, err.StoredConfig, err.NewConfig, err.RewindTo)
}
func (c *ChainConfig) IsByzantium(num *big.Int) bool {
return isForked(c.ByzantiumBlock, num)
}
// GasTable returns the gas table corresponding to the current phase .
//
// The returned GasTable's fields shouldn't, under any circumstances, be changed.
func (c *ChainConfig) GasTable(num *big.Int) GasTable {
return GasTableFrontier
}
// Rules wraps ChainConfig and is merely syntatic sugar or can be used for functions
// that do not have or require information about the block.
//
// Rules is a one time interface meaning that it shouldn't be used in between transition
// phases.
type Rules struct {
ChainId *big.Int
IsByzantium bool
}
func (c *ChainConfig) Rules(num *big.Int) Rules {
chainId := c.ChainId
if chainId == nil {
chainId = new(big.Int)
}
return Rules{ChainId: new(big.Int).Set(chainId), IsByzantium: c.IsByzantium(num)}
}