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// Copyright 2017 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 eth
import (
"math/big"
"os"
"os/user"
"path/filepath"
"runtime"
"time"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/consensus/ethash"
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/eth/downloader"
"github.com/ethereum/go-ethereum/eth/gasprice"
"github.com/ethereum/go-ethereum/miner"
"github.com/ethereum/go-ethereum/params"
)
// DefaultConfig contains default settings for use on the Ethereum main net.
var DefaultConfig = Config{
SyncMode: downloader.FastSync,
Ethash: ethash.Config{
CacheDir: "ethash",
CachesInMem: 2,
CachesOnDisk: 3,
DatasetsInMem: 1,
DatasetsOnDisk: 2,
},
NetworkId: 1,
LightPeers: 100,
UltraLightFraction: 75,
DatabaseCache: 512,
TrieCleanCache: 256,
TrieDirtyCache: 256,
TrieTimeout: 60 * time.Minute,
Miner: miner.Config{
GasFloor: 8000000,
GasCeil: 8000000,
GasPrice: big.NewInt(params.GWei),
Recommit: 3 * time.Second,
},
TxPool: core.DefaultTxPoolConfig,
GPO: gasprice.Config{
Blocks: 20,
Percentile: 60,
},
}
func init() {
home := os.Getenv("HOME")
if home == "" {
if user, err := user.Current(); err == nil {
home = user.HomeDir
}
}
if runtime.GOOS == "darwin" {
DefaultConfig.Ethash.DatasetDir = filepath.Join(home, "Library", "Ethash")
} else if runtime.GOOS == "windows" {
localappdata := os.Getenv("LOCALAPPDATA")
if localappdata != "" {
DefaultConfig.Ethash.DatasetDir = filepath.Join(localappdata, "Ethash")
} else {
DefaultConfig.Ethash.DatasetDir = filepath.Join(home, "AppData", "Local", "Ethash")
}
} else {
DefaultConfig.Ethash.DatasetDir = filepath.Join(home, ".ethash")
}
}
//go:generate gencodec -type Config -formats toml -out gen_config.go
type Config struct {
// The genesis block, which is inserted if the database is empty.
// If nil, the Ethereum main net block is used.
Genesis *core.Genesis `toml:",omitempty"`
// Protocol options
NetworkId uint64 // Network ID to use for selecting peers to connect to
SyncMode downloader.SyncMode
NoPruning bool // Whether to disable pruning and flush everything to disk
NoPrefetch bool // Whether to disable prefetching and only load state on demand
// Whitelist of required block number -> hash values to accept
Whitelist map[uint64]common.Hash `toml:"-"`
// Light client options
LightServ int `toml:",omitempty"` // Maximum percentage of time allowed for serving LES requests
LightIngress int `toml:",omitempty"` // Incoming bandwidth limit for light servers
LightEgress int `toml:",omitempty"` // Outgoing bandwidth limit for light servers
LightPeers int `toml:",omitempty"` // Maximum number of LES client peers
// Ultra Light client options
UltraLightServers []string `toml:",omitempty"` // List of trusted ultra light servers
UltraLightFraction int `toml:",omitempty"` // Percentage of trusted servers to accept an announcement
UltraLightOnlyAnnounce bool `toml:",omitempty"` // Whether to only announce headers, or also serve them
// Database options
SkipBcVersionCheck bool `toml:"-"`
DatabaseHandles int `toml:"-"`
DatabaseCache int
DatabaseFreezer string
TrieCleanCache int
TrieDirtyCache int
TrieTimeout time.Duration
// Mining options
Miner miner.Config
// Ethash options
Ethash ethash.Config
// Transaction pool options
TxPool core.TxPoolConfig
// Gas Price Oracle options
GPO gasprice.Config
// Enables tracking of SHA3 preimages in the VM
EnablePreimageRecording bool
// Miscellaneous options
DocRoot string `toml:"-"`
// Type of the EWASM interpreter ("" for default)
EWASMInterpreter string
// Type of the EVM interpreter ("" for default)
EVMInterpreter string
// RPCGasCap is the global gas cap for eth-call variants.
RPCGasCap *big.Int `toml:",omitempty"`
// Checkpoint is a hardcoded checkpoint which can be nil.
Checkpoint *params.TrustedCheckpoint `toml:",omitempty"`
// CheckpointOracle is the configuration for checkpoint oracle.
CheckpointOracle *params.CheckpointOracleConfig `toml:",omitempty"`
// Istanbul block override (TODO: remove after the fork)
OverrideIstanbul *big.Int
}
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