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config.go
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config.go
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// Copyright 2016 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 params
import (
"fmt"
"math/big"
"github.com/Venachain/Venachain/common"
"github.com/Venachain/Venachain/p2p/discover"
)
// Genesis hashes to enforce below configs on.
var (
MainnetGenesisHash = common.HexToHash("0xd4e56740f876aef8c010b86a40d5f56745a118d0906a34e69aec8c0db1cb8fa3")
)
var (
// MainnetTrustedCheckpoint contains the light client trusted checkpoint for the main network.
MainnetTrustedCheckpoint = &TrustedCheckpoint{
Name: "mainnet",
SectionIndex: 193,
SectionHead: common.HexToHash("0xc2d574295ecedc4d58530ae24c31a5a98be7d2b3327fba0dd0f4ed3913828a55"),
CHTRoot: common.HexToHash("0x5d1027dfae688c77376e842679ceada87fd94738feb9b32ef165473bfbbb317b"),
BloomRoot: common.HexToHash("0xd38be1a06aabd568e10957fee4fcc523bc64996bcf31bae3f55f86e0a583919f"),
}
TestChainConfig = &ChainConfig{big.NewInt(1), nil, "", false}
)
// TrustedCheckpoint represents a set of post-processed trie roots (CHT and
// BloomTrie) associated with the appropriate section index and head hash. It is
// used to start light syncing from this checkpoint and avoid downloading the
// entire header chain while still being able to securely access old headers/logs.
type TrustedCheckpoint struct {
Name string `json:"-"`
SectionIndex uint64 `json:"sectionIndex"`
SectionHead common.Hash `json:"sectionHead"`
CHTRoot common.Hash `json:"chtRoot"`
BloomRoot common.Hash `json:"bloomRoot"`
}
// 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"` // chainId identifies the current chain and is used for replay protection
// Various consensus engines
Istanbul *IstanbulConfig `json:"istanbul,omitempty"`
// Various vm interpreter
VMInterpreter string `json:"interpreter,omitempty"`
LicenseCheck bool `json:"licenseCheck"`
}
// EthashConfig is the consensus engine configs for proof-of-work based sealing.
type EthashConfig struct{}
// String implements the stringer interface, returning the consensus engine details.
func (c *EthashConfig) String() string {
return "ethash"
}
type ProposerPolicy uint64
type IstanbulConfig struct {
RequestTimeout uint64 `json:"timeout,omitempty"` // The timeout for each Istanbul round in milliseconds.
BlockPeriod uint64 `json:"period,omitempty"` // Default minimum difference between two consecutive block's timestamps in second
ProposerPolicy ProposerPolicy `json:"policy,omitempty"` // The policy for proposer selection
FirstValidatorNode discover.Node `json:"firstValidatorNode,omitempty"`
}
// String implements the fmt.Stringer interface.
func (c *ChainConfig) String() string {
var engine interface{}
switch {
case c.Istanbul != nil:
engine = "istanbul"
default:
engine = "unknown"
}
return fmt.Sprintf("{ChainID: %v Engine: %v}",
c.ChainID,
engine,
)
}
// GasTable returns the gas table corresponding to the current phase (homestead or homestead reprice).
//
// The returned GasTable's fields shouldn't, under any circumstances, be changed.
func (c *ChainConfig) GasTable(num *big.Int) GasTable {
return GasTableConstantinople
}
// Rules wraps ChainConfig and is merely syntactic 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
}
// Rules ensures c's ChainID is not nil.
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),
}
}