github.com/letterj/go-ethereum@v1.8.22-0.20190204142846-520024dfd689/eth/config.go (about) 1 // Copyright 2017 The go-ethereum Authors 2 // This file is part of the go-ethereum library. 3 // 4 // The go-ethereum library is free software: you can redistribute it and/or modify 5 // it under the terms of the GNU Lesser General Public License as published by 6 // the Free Software Foundation, either version 3 of the License, or 7 // (at your option) any later version. 8 // 9 // The go-ethereum library is distributed in the hope that it will be useful, 10 // but WITHOUT ANY WARRANTY; without even the implied warranty of 11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 // GNU Lesser General Public License for more details. 13 // 14 // You should have received a copy of the GNU Lesser General Public License 15 // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>. 16 17 package eth 18 19 import ( 20 "math/big" 21 "os" 22 "os/user" 23 "path/filepath" 24 "runtime" 25 "time" 26 27 "github.com/ethereum/go-ethereum/common" 28 "github.com/ethereum/go-ethereum/common/hexutil" 29 "github.com/ethereum/go-ethereum/consensus/ethash" 30 "github.com/ethereum/go-ethereum/core" 31 "github.com/ethereum/go-ethereum/eth/downloader" 32 "github.com/ethereum/go-ethereum/eth/gasprice" 33 "github.com/ethereum/go-ethereum/params" 34 ) 35 36 // DefaultConfig contains default settings for use on the Ethereum main net. 37 var DefaultConfig = Config{ 38 SyncMode: downloader.FastSync, 39 Ethash: ethash.Config{ 40 CacheDir: "ethash", 41 CachesInMem: 2, 42 CachesOnDisk: 3, 43 DatasetsInMem: 1, 44 DatasetsOnDisk: 2, 45 }, 46 NetworkId: 1, 47 LightPeers: 100, 48 DatabaseCache: 512, 49 TrieCleanCache: 256, 50 TrieDirtyCache: 256, 51 TrieTimeout: 60 * time.Minute, 52 MinerGasFloor: 8000000, 53 MinerGasCeil: 8000000, 54 MinerGasPrice: big.NewInt(params.GWei), 55 MinerRecommit: 3 * time.Second, 56 57 TxPool: core.DefaultTxPoolConfig, 58 GPO: gasprice.Config{ 59 Blocks: 20, 60 Percentile: 60, 61 }, 62 } 63 64 func init() { 65 home := os.Getenv("HOME") 66 if home == "" { 67 if user, err := user.Current(); err == nil { 68 home = user.HomeDir 69 } 70 } 71 if runtime.GOOS == "windows" { 72 DefaultConfig.Ethash.DatasetDir = filepath.Join(home, "AppData", "Ethash") 73 } else { 74 DefaultConfig.Ethash.DatasetDir = filepath.Join(home, ".ethash") 75 } 76 } 77 78 //go:generate gencodec -type Config -field-override configMarshaling -formats toml -out gen_config.go 79 80 type Config struct { 81 // The genesis block, which is inserted if the database is empty. 82 // If nil, the Ethereum main net block is used. 83 Genesis *core.Genesis `toml:",omitempty"` 84 85 // Protocol options 86 NetworkId uint64 // Network ID to use for selecting peers to connect to 87 SyncMode downloader.SyncMode 88 NoPruning bool 89 90 // Whitelist of required block number -> hash values to accept 91 Whitelist map[uint64]common.Hash `toml:"-"` 92 93 // Light client options 94 LightServ int `toml:",omitempty"` // Maximum percentage of time allowed for serving LES requests 95 LightPeers int `toml:",omitempty"` // Maximum number of LES client peers 96 OnlyAnnounce bool // Maximum number of LES client peers 97 98 // Ultra Light client options 99 ULC *ULCConfig `toml:",omitempty"` 100 101 // Database options 102 SkipBcVersionCheck bool `toml:"-"` 103 DatabaseHandles int `toml:"-"` 104 DatabaseCache int 105 TrieCleanCache int 106 TrieDirtyCache int 107 TrieTimeout time.Duration 108 109 // Mining-related options 110 Etherbase common.Address `toml:",omitempty"` 111 MinerNotify []string `toml:",omitempty"` 112 MinerExtraData []byte `toml:",omitempty"` 113 MinerGasFloor uint64 114 MinerGasCeil uint64 115 MinerGasPrice *big.Int 116 MinerRecommit time.Duration 117 MinerNoverify bool 118 119 // Ethash options 120 Ethash ethash.Config 121 122 // Transaction pool options 123 TxPool core.TxPoolConfig 124 125 // Gas Price Oracle options 126 GPO gasprice.Config 127 128 // Enables tracking of SHA3 preimages in the VM 129 EnablePreimageRecording bool 130 131 // Miscellaneous options 132 DocRoot string `toml:"-"` 133 134 // Type of the EWASM interpreter ("" for default) 135 EWASMInterpreter string 136 137 // Type of the EVM interpreter ("" for default) 138 EVMInterpreter string 139 140 // Constantinople block override (TODO: remove after the fork) 141 ConstantinopleOverride *big.Int 142 } 143 144 type configMarshaling struct { 145 MinerExtraData hexutil.Bytes 146 }