github.com/nitinawathare/ethereumassignment3@v0.0.0-20211021213010-f07344c2b868/go-ethereum/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 InterArrival: 15, 47 HashPower: 1, 48 Behavior: 0, 49 NetworkId: 1, 50 LightPeers: 100, 51 DatabaseCache: 512, 52 TrieCleanCache: 256, 53 TrieDirtyCache: 256, 54 TrieTimeout: 60 * time.Minute, 55 MinerGasFloor: 400000000, 56 MinerGasCeil: 400000000, 57 MinerGasPrice: big.NewInt(params.GWei), 58 MinerRecommit: 3 * time.Second, 59 60 TxPool: core.DefaultTxPoolConfig, 61 GPO: gasprice.Config{ 62 Blocks: 20, 63 Percentile: 60, 64 }, 65 } 66 67 func init() { 68 home := os.Getenv("HOME") 69 if home == "" { 70 if user, err := user.Current(); err == nil { 71 home = user.HomeDir 72 } 73 } 74 if runtime.GOOS == "darwin" { 75 DefaultConfig.Ethash.DatasetDir = filepath.Join(home, "Library", "Ethash") 76 } else if runtime.GOOS == "windows" { 77 localappdata := os.Getenv("LOCALAPPDATA") 78 if localappdata != "" { 79 DefaultConfig.Ethash.DatasetDir = filepath.Join(localappdata, "Ethash") 80 } else { 81 DefaultConfig.Ethash.DatasetDir = filepath.Join(home, "AppData", "Local", "Ethash") 82 } 83 } else { 84 DefaultConfig.Ethash.DatasetDir = filepath.Join(home, ".ethash") 85 } 86 } 87 88 //go:generate gencodec -type Config -field-override configMarshaling -formats toml -out gen_config.go 89 90 type Config struct { 91 // The genesis block, which is inserted if the database is empty. 92 // If nil, the Ethereum main net block is used. 93 Genesis *core.Genesis `toml:",omitempty"` 94 95 // Protocol options 96 NetworkId uint64 // Network ID to use for selecting peers to connect to 97 InterArrival float64 98 HashPower float64 99 Behavior uint64 100 SyncMode downloader.SyncMode 101 102 NoPruning bool // Whether to disable pruning and flush everything to disk 103 NoPrefetch bool // Whether to disable prefetching and only load state on demand 104 105 // Whitelist of required block number -> hash values to accept 106 Whitelist map[uint64]common.Hash `toml:"-"` 107 108 // Light client options 109 LightServ int `toml:",omitempty"` // Maximum percentage of time allowed for serving LES requests 110 LightBandwidthIn int `toml:",omitempty"` // Incoming bandwidth limit for light servers 111 LightBandwidthOut int `toml:",omitempty"` // Outgoing bandwidth limit for light servers 112 LightPeers int `toml:",omitempty"` // Maximum number of LES client peers 113 OnlyAnnounce bool // Maximum number of LES client peers 114 115 // Ultra Light client options 116 ULC *ULCConfig `toml:",omitempty"` 117 118 // Database options 119 SkipBcVersionCheck bool `toml:"-"` 120 DatabaseHandles int `toml:"-"` 121 DatabaseCache int 122 123 TrieCleanCache int 124 TrieDirtyCache int 125 TrieTimeout time.Duration 126 127 // Mining-related options 128 Etherbase common.Address `toml:",omitempty"` 129 MinerNotify []string `toml:",omitempty"` 130 MinerExtraData []byte `toml:",omitempty"` 131 MinerGasFloor uint64 132 MinerGasCeil uint64 133 MinerGasPrice *big.Int 134 MinerRecommit time.Duration 135 MinerNoverify bool 136 137 // Ethash options 138 Ethash ethash.Config 139 140 // Transaction pool options 141 TxPool core.TxPoolConfig 142 143 // Gas Price Oracle options 144 GPO gasprice.Config 145 146 // Enables tracking of SHA3 preimages in the VM 147 EnablePreimageRecording bool 148 149 // Miscellaneous options 150 DocRoot string `toml:"-"` 151 152 // Type of the EWASM interpreter ("" for default) 153 EWASMInterpreter string 154 155 // Type of the EVM interpreter ("" for default) 156 EVMInterpreter string 157 158 // Constantinople block override (TODO: remove after the fork) 159 ConstantinopleOverride *big.Int 160 161 // RPCGasCap is the global gas cap for eth-call variants. 162 RPCGasCap *big.Int `toml:",omitempty"` 163 } 164 165 type configMarshaling struct { 166 MinerExtraData hexutil.Bytes 167 }