add necessary code base

1 files changed, 157 insertions, 0 deletions

diff --git a/eth/config.go b/eth/config.go
new file mode 100644
index 0000000..6887872
--- /dev/null
+++ b/eth/config.go
@@ -0,0 +1,157 @@
+// 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"`
+}