mirror of
https://gitlab.com/pulsechaincom/erigon-pulse.git
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37dd9086ec
This commit solves several issues concerning the genesis block: * Genesis/ChainConfig loading was handled by cmd/geth code. This left library users in the cold. They could specify a JSON-encoded string and overwrite the config, but didn't get any of the additional checks performed by geth. * Decoding and writing of genesis JSON was conflated in WriteGenesisBlock. This made it a lot harder to embed the genesis block into the forthcoming config file loader. This commit changes things so there is a single Genesis type that represents genesis blocks. All uses of Write*Genesis* are changed to use the new type instead. * If the chain config supplied by the user was incompatible with the current chain (i.e. the chain had already advanced beyond a scheduled fork), it got overwritten. This is not an issue in practice because previous forks have always had the highest total difficulty. It might matter in the future though. The new code reverts the local chain to the point of the fork when upgrading configuration. The change to genesis block data removes compression library dependencies from package core.
99 lines
3.7 KiB
Go
99 lines
3.7 KiB
Go
// Copyright 2016 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser 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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//
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// The go-ethereum library 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 Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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// Contains all the wrappers from the params package.
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package geth
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import (
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"encoding/json"
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"github.com/ethereum/go-ethereum/core"
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"github.com/ethereum/go-ethereum/p2p/discv5"
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"github.com/ethereum/go-ethereum/params"
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)
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// MainnetChainConfig returns the chain configurations for the main Ethereum network.
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func MainnetChainConfig() *ChainConfig {
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return &ChainConfig{
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ChainID: params.MainNetChainID.Int64(),
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HomesteadBlock: params.MainNetHomesteadBlock.Int64(),
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DAOForkBlock: params.MainNetDAOForkBlock.Int64(),
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DAOForkSupport: true,
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EIP150Block: params.MainNetHomesteadGasRepriceBlock.Int64(),
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EIP150Hash: Hash{params.MainNetHomesteadGasRepriceHash},
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EIP155Block: params.MainNetSpuriousDragon.Int64(),
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EIP158Block: params.MainNetSpuriousDragon.Int64(),
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}
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}
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// MainnetGenesis returns the JSON spec to use for the main Ethereum network. It
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// is actually empty since that defaults to the hard coded binary genesis block.
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func MainnetGenesis() string {
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return ""
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}
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// TestnetChainConfig returns the chain configurations for the Ethereum test network.
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func TestnetChainConfig() *ChainConfig {
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return &ChainConfig{
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ChainID: params.TestNetChainID.Int64(),
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HomesteadBlock: params.TestNetHomesteadBlock.Int64(),
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DAOForkBlock: 0,
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DAOForkSupport: false,
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EIP150Block: params.TestNetHomesteadGasRepriceBlock.Int64(),
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EIP150Hash: Hash{params.TestNetHomesteadGasRepriceHash},
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EIP155Block: params.TestNetSpuriousDragon.Int64(),
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EIP158Block: params.TestNetSpuriousDragon.Int64(),
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}
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}
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// TestnetGenesis returns the JSON spec to use for the Ethereum test network.
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func TestnetGenesis() string {
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enc, err := json.Marshal(core.DefaultTestnetGenesisBlock())
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if err != nil {
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panic(err)
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}
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return string(enc)
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}
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// ChainConfig is the core config which determines the blockchain settings.
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type ChainConfig struct {
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ChainID int64 // Chain ID for replay protection
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HomesteadBlock int64 // Homestead switch block
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DAOForkBlock int64 // TheDAO hard-fork switch block
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DAOForkSupport bool // Whether the nodes supports or opposes the DAO hard-fork
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EIP150Block int64 // Homestead gas reprice switch block
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EIP150Hash Hash // Homestead gas reprice switch block hash
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EIP155Block int64 // Replay protection switch block
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EIP158Block int64 // Empty account pruning switch block
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}
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// NewChainConfig creates a new chain configuration that transitions immediately
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// to homestead and has no notion of the DAO fork (ideal for a private network).
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func NewChainConfig() *ChainConfig {
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return new(ChainConfig)
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}
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// FoundationBootnodes returns the enode URLs of the P2P bootstrap nodes operated
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// by the foundation running the V5 discovery protocol.
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func FoundationBootnodes() *Enodes {
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nodes := &Enodes{nodes: make([]*discv5.Node, len(params.DiscoveryV5Bootnodes))}
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for i, url := range params.DiscoveryV5Bootnodes {
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nodes.nodes[i] = discv5.MustParseNode(url)
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}
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return nodes
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}
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