724 lines
22 KiB
Go
724 lines
22 KiB
Go
// Copyright 2014 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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// Package eth implements the Ethereum protocol.
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package eth
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import (
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"crypto/ecdsa"
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"encoding/json"
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"fmt"
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"io/ioutil"
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"math/big"
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"os"
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"path/filepath"
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"strings"
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"time"
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"github.com/ethereum/ethash"
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"github.com/ethereum/go-ethereum/accounts"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/common/compiler"
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"github.com/ethereum/go-ethereum/core"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/ethereum/go-ethereum/core/vm"
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"github.com/ethereum/go-ethereum/crypto"
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"github.com/ethereum/go-ethereum/eth/downloader"
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"github.com/ethereum/go-ethereum/ethdb"
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"github.com/ethereum/go-ethereum/event"
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"github.com/ethereum/go-ethereum/logger"
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"github.com/ethereum/go-ethereum/logger/glog"
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"github.com/ethereum/go-ethereum/miner"
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"github.com/ethereum/go-ethereum/p2p"
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"github.com/ethereum/go-ethereum/p2p/discover"
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"github.com/ethereum/go-ethereum/p2p/nat"
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"github.com/ethereum/go-ethereum/whisper"
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)
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const (
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epochLength = 30000
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ethashRevision = 23
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autoDAGcheckInterval = 10 * time.Hour
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autoDAGepochHeight = epochLength / 2
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)
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var (
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jsonlogger = logger.NewJsonLogger()
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defaultBootNodes = []*discover.Node{
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// ETH/DEV Go Bootnodes
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discover.MustParseNode("enode://a979fb575495b8d6db44f750317d0f4622bf4c2aa3365d6af7c284339968eef29b69ad0dce72a4d8db5ebb4968de0e3bec910127f134779fbcb0cb6d3331163c@52.16.188.185:30303"),
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discover.MustParseNode("enode://de471bccee3d042261d52e9bff31458daecc406142b401d4cd848f677479f73104b9fdeb090af9583d3391b7f10cb2ba9e26865dd5fca4fcdc0fb1e3b723c786@54.94.239.50:30303"),
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// ETH/DEV cpp-ethereum (poc-9.ethdev.com)
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discover.MustParseNode("enode://487611428e6c99a11a9795a6abe7b529e81315ca6aad66e2a2fc76e3adf263faba0d35466c2f8f68d561dbefa8878d4df5f1f2ddb1fbeab7f42ffb8cd328bd4a@5.1.83.226:30303"),
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}
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staticNodes = "static-nodes.json" // Path within <datadir> to search for the static node list
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trustedNodes = "trusted-nodes.json" // Path within <datadir> to search for the trusted node list
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)
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type Config struct {
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Name string
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NetworkId int
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GenesisNonce int
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GenesisFile string
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GenesisBlock *types.Block // used by block tests
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BlockChainVersion int
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SkipBcVersionCheck bool // e.g. blockchain export
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DataDir string
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LogFile string
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Verbosity int
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LogJSON string
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VmDebug bool
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NatSpec bool
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AutoDAG bool
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PowTest bool
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MaxPeers int
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MaxPendingPeers int
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Discovery bool
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Port string
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// Space-separated list of discovery node URLs
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BootNodes string
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// This key is used to identify the node on the network.
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// If nil, an ephemeral key is used.
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NodeKey *ecdsa.PrivateKey
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NAT nat.Interface
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Shh bool
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Dial bool
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Etherbase common.Address
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GasPrice *big.Int
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MinerThreads int
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AccountManager *accounts.Manager
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SolcPath string
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GpoMinGasPrice *big.Int
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GpoMaxGasPrice *big.Int
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GpoFullBlockRatio int
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GpobaseStepDown int
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GpobaseStepUp int
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GpobaseCorrectionFactor int
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// NewDB is used to create databases.
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// If nil, the default is to create leveldb databases on disk.
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NewDB func(path string) (common.Database, error)
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}
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func (cfg *Config) parseBootNodes() []*discover.Node {
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if cfg.BootNodes == "" {
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return defaultBootNodes
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}
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var ns []*discover.Node
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for _, url := range strings.Split(cfg.BootNodes, " ") {
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if url == "" {
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continue
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}
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n, err := discover.ParseNode(url)
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if err != nil {
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glog.V(logger.Error).Infof("Bootstrap URL %s: %v\n", url, err)
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continue
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}
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ns = append(ns, n)
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}
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return ns
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}
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// parseNodes parses a list of discovery node URLs loaded from a .json file.
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func (cfg *Config) parseNodes(file string) []*discover.Node {
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// Short circuit if no node config is present
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path := filepath.Join(cfg.DataDir, file)
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if _, err := os.Stat(path); err != nil {
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return nil
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}
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// Load the nodes from the config file
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blob, err := ioutil.ReadFile(path)
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if err != nil {
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glog.V(logger.Error).Infof("Failed to access nodes: %v", err)
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return nil
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}
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nodelist := []string{}
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if err := json.Unmarshal(blob, &nodelist); err != nil {
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glog.V(logger.Error).Infof("Failed to load nodes: %v", err)
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return nil
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}
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// Interpret the list as a discovery node array
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var nodes []*discover.Node
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for _, url := range nodelist {
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if url == "" {
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continue
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}
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node, err := discover.ParseNode(url)
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if err != nil {
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glog.V(logger.Error).Infof("Node URL %s: %v\n", url, err)
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continue
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}
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nodes = append(nodes, node)
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}
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return nodes
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}
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func (cfg *Config) nodeKey() (*ecdsa.PrivateKey, error) {
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// use explicit key from command line args if set
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if cfg.NodeKey != nil {
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return cfg.NodeKey, nil
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}
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// use persistent key if present
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keyfile := filepath.Join(cfg.DataDir, "nodekey")
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key, err := crypto.LoadECDSA(keyfile)
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if err == nil {
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return key, nil
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}
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// no persistent key, generate and store a new one
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if key, err = crypto.GenerateKey(); err != nil {
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return nil, fmt.Errorf("could not generate server key: %v", err)
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}
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if err := crypto.SaveECDSA(keyfile, key); err != nil {
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glog.V(logger.Error).Infoln("could not persist nodekey: ", err)
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}
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return key, nil
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}
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type Ethereum struct {
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// Channel for shutting down the ethereum
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shutdownChan chan bool
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// DB interfaces
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blockDb common.Database // Block chain database
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stateDb common.Database // State changes database
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extraDb common.Database // Extra database (txs, etc)
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// Closed when databases are flushed and closed
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databasesClosed chan bool
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//*** SERVICES ***
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// State manager for processing new blocks and managing the over all states
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blockProcessor *core.BlockProcessor
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txPool *core.TxPool
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chainManager *core.ChainManager
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accountManager *accounts.Manager
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whisper *whisper.Whisper
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pow *ethash.Ethash
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protocolManager *ProtocolManager
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SolcPath string
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solc *compiler.Solidity
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GpoMinGasPrice *big.Int
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GpoMaxGasPrice *big.Int
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GpoFullBlockRatio int
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GpobaseStepDown int
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GpobaseStepUp int
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GpobaseCorrectionFactor int
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net *p2p.Server
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eventMux *event.TypeMux
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miner *miner.Miner
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// logger logger.LogSystem
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Mining bool
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MinerThreads int
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NatSpec bool
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DataDir string
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AutoDAG bool
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PowTest bool
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autodagquit chan bool
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etherbase common.Address
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clientVersion string
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netVersionId int
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shhVersionId int
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}
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func New(config *Config) (*Ethereum, error) {
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// Bootstrap database
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logger.New(config.DataDir, config.LogFile, config.Verbosity)
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if len(config.LogJSON) > 0 {
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logger.NewJSONsystem(config.DataDir, config.LogJSON)
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}
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// Let the database take 3/4 of the max open files (TODO figure out a way to get the actual limit of the open files)
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const dbCount = 3
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ethdb.OpenFileLimit = 128 / (dbCount + 1)
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newdb := config.NewDB
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if newdb == nil {
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newdb = func(path string) (common.Database, error) { return ethdb.NewLDBDatabase(path) }
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}
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blockDb, err := newdb(filepath.Join(config.DataDir, "blockchain"))
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if err != nil {
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return nil, fmt.Errorf("blockchain db err: %v", err)
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}
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if db, ok := blockDb.(*ethdb.LDBDatabase); ok {
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db.Meter("eth/db/block/")
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}
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stateDb, err := newdb(filepath.Join(config.DataDir, "state"))
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if err != nil {
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return nil, fmt.Errorf("state db err: %v", err)
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}
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if db, ok := stateDb.(*ethdb.LDBDatabase); ok {
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db.Meter("eth/db/state/")
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}
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extraDb, err := newdb(filepath.Join(config.DataDir, "extra"))
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if err != nil {
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return nil, fmt.Errorf("extra db err: %v", err)
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}
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if db, ok := extraDb.(*ethdb.LDBDatabase); ok {
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db.Meter("eth/db/extra/")
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}
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nodeDb := filepath.Join(config.DataDir, "nodes")
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glog.V(logger.Info).Infof("Protocol Versions: %v, Network Id: %v", ProtocolVersions, config.NetworkId)
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if len(config.GenesisFile) > 0 {
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fr, err := os.Open(config.GenesisFile)
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if err != nil {
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return nil, err
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}
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block, err := core.WriteGenesisBlock(stateDb, blockDb, fr)
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if err != nil {
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return nil, err
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}
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glog.V(logger.Info).Infof("Successfully wrote genesis block. New genesis hash = %x\n", block.Hash())
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}
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// This is for testing only.
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if config.GenesisBlock != nil {
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core.WriteBlock(blockDb, config.GenesisBlock)
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core.WriteHead(blockDb, config.GenesisBlock)
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}
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if !config.SkipBcVersionCheck {
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b, _ := blockDb.Get([]byte("BlockchainVersion"))
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bcVersion := int(common.NewValue(b).Uint())
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if bcVersion != config.BlockChainVersion && bcVersion != 0 {
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return nil, fmt.Errorf("Blockchain DB version mismatch (%d / %d). Run geth upgradedb.\n", bcVersion, config.BlockChainVersion)
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}
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saveBlockchainVersion(blockDb, config.BlockChainVersion)
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}
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glog.V(logger.Info).Infof("Blockchain DB Version: %d", config.BlockChainVersion)
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eth := &Ethereum{
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shutdownChan: make(chan bool),
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databasesClosed: make(chan bool),
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blockDb: blockDb,
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stateDb: stateDb,
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extraDb: extraDb,
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eventMux: &event.TypeMux{},
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accountManager: config.AccountManager,
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DataDir: config.DataDir,
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etherbase: config.Etherbase,
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clientVersion: config.Name, // TODO should separate from Name
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netVersionId: config.NetworkId,
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NatSpec: config.NatSpec,
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MinerThreads: config.MinerThreads,
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SolcPath: config.SolcPath,
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AutoDAG: config.AutoDAG,
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PowTest: config.PowTest,
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GpoMinGasPrice: config.GpoMinGasPrice,
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GpoMaxGasPrice: config.GpoMaxGasPrice,
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GpoFullBlockRatio: config.GpoFullBlockRatio,
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GpobaseStepDown: config.GpobaseStepDown,
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GpobaseStepUp: config.GpobaseStepUp,
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GpobaseCorrectionFactor: config.GpobaseCorrectionFactor,
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}
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if config.PowTest {
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glog.V(logger.Info).Infof("ethash used in test mode")
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eth.pow, err = ethash.NewForTesting()
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if err != nil {
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return nil, err
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}
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} else {
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eth.pow = ethash.New()
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}
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//genesis := core.GenesisBlock(uint64(config.GenesisNonce), stateDb)
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eth.chainManager, err = core.NewChainManager(blockDb, stateDb, extraDb, eth.pow, eth.EventMux())
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if err != nil {
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if err == core.ErrNoGenesis {
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return nil, fmt.Errorf(`Genesis block not found. Please supply a genesis block with the "--genesis /path/to/file" argument`)
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}
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return nil, err
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}
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eth.txPool = core.NewTxPool(eth.EventMux(), eth.chainManager.State, eth.chainManager.GasLimit)
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eth.blockProcessor = core.NewBlockProcessor(stateDb, extraDb, eth.pow, eth.chainManager, eth.EventMux())
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eth.chainManager.SetProcessor(eth.blockProcessor)
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eth.protocolManager = NewProtocolManager(config.NetworkId, eth.eventMux, eth.txPool, eth.pow, eth.chainManager)
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eth.miner = miner.New(eth, eth.EventMux(), eth.pow)
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eth.miner.SetGasPrice(config.GasPrice)
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if config.Shh {
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eth.whisper = whisper.New()
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eth.shhVersionId = int(eth.whisper.Version())
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}
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netprv, err := config.nodeKey()
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if err != nil {
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return nil, err
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}
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protocols := append([]p2p.Protocol{}, eth.protocolManager.SubProtocols...)
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if config.Shh {
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protocols = append(protocols, eth.whisper.Protocol())
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}
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eth.net = &p2p.Server{
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PrivateKey: netprv,
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Name: config.Name,
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MaxPeers: config.MaxPeers,
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MaxPendingPeers: config.MaxPendingPeers,
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Discovery: config.Discovery,
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Protocols: protocols,
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NAT: config.NAT,
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NoDial: !config.Dial,
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BootstrapNodes: config.parseBootNodes(),
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StaticNodes: config.parseNodes(staticNodes),
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TrustedNodes: config.parseNodes(trustedNodes),
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NodeDatabase: nodeDb,
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}
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if len(config.Port) > 0 {
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eth.net.ListenAddr = ":" + config.Port
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}
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vm.Debug = config.VmDebug
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return eth, nil
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}
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type NodeInfo struct {
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Name string
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NodeUrl string
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NodeID string
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IP string
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DiscPort int // UDP listening port for discovery protocol
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TCPPort int // TCP listening port for RLPx
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Td string
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ListenAddr string
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}
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func (s *Ethereum) NodeInfo() *NodeInfo {
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node := s.net.Self()
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return &NodeInfo{
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Name: s.Name(),
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NodeUrl: node.String(),
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NodeID: node.ID.String(),
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IP: node.IP.String(),
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DiscPort: int(node.UDP),
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TCPPort: int(node.TCP),
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ListenAddr: s.net.ListenAddr,
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Td: s.ChainManager().Td().String(),
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}
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}
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type PeerInfo struct {
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ID string
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Name string
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Caps string
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RemoteAddress string
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LocalAddress string
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}
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func newPeerInfo(peer *p2p.Peer) *PeerInfo {
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var caps []string
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for _, cap := range peer.Caps() {
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caps = append(caps, cap.String())
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}
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return &PeerInfo{
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ID: peer.ID().String(),
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Name: peer.Name(),
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Caps: strings.Join(caps, ", "),
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RemoteAddress: peer.RemoteAddr().String(),
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LocalAddress: peer.LocalAddr().String(),
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}
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}
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// PeersInfo returns an array of PeerInfo objects describing connected peers
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func (s *Ethereum) PeersInfo() (peersinfo []*PeerInfo) {
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for _, peer := range s.net.Peers() {
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if peer != nil {
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peersinfo = append(peersinfo, newPeerInfo(peer))
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}
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}
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return
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}
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func (s *Ethereum) ResetWithGenesisBlock(gb *types.Block) {
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s.chainManager.ResetWithGenesisBlock(gb)
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}
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func (s *Ethereum) StartMining(threads int) error {
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eb, err := s.Etherbase()
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if err != nil {
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err = fmt.Errorf("Cannot start mining without etherbase address: %v", err)
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glog.V(logger.Error).Infoln(err)
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return err
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}
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go s.miner.Start(eb, threads)
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return nil
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}
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func (s *Ethereum) Etherbase() (eb common.Address, err error) {
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eb = s.etherbase
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if (eb == common.Address{}) {
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err = fmt.Errorf("etherbase address must be explicitly specified")
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}
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return
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}
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// set in js console via admin interface or wrapper from cli flags
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func (self *Ethereum) SetEtherbase(etherbase common.Address) {
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self.etherbase = etherbase
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self.miner.SetEtherbase(etherbase)
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}
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func (s *Ethereum) StopMining() { s.miner.Stop() }
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func (s *Ethereum) IsMining() bool { return s.miner.Mining() }
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func (s *Ethereum) Miner() *miner.Miner { return s.miner }
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// func (s *Ethereum) Logger() logger.LogSystem { return s.logger }
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func (s *Ethereum) Name() string { return s.net.Name }
|
|
func (s *Ethereum) AccountManager() *accounts.Manager { return s.accountManager }
|
|
func (s *Ethereum) ChainManager() *core.ChainManager { return s.chainManager }
|
|
func (s *Ethereum) BlockProcessor() *core.BlockProcessor { return s.blockProcessor }
|
|
func (s *Ethereum) TxPool() *core.TxPool { return s.txPool }
|
|
func (s *Ethereum) Whisper() *whisper.Whisper { return s.whisper }
|
|
func (s *Ethereum) EventMux() *event.TypeMux { return s.eventMux }
|
|
func (s *Ethereum) BlockDb() common.Database { return s.blockDb }
|
|
func (s *Ethereum) StateDb() common.Database { return s.stateDb }
|
|
func (s *Ethereum) ExtraDb() common.Database { return s.extraDb }
|
|
func (s *Ethereum) IsListening() bool { return true } // Always listening
|
|
func (s *Ethereum) PeerCount() int { return s.net.PeerCount() }
|
|
func (s *Ethereum) Peers() []*p2p.Peer { return s.net.Peers() }
|
|
func (s *Ethereum) MaxPeers() int { return s.net.MaxPeers }
|
|
func (s *Ethereum) ClientVersion() string { return s.clientVersion }
|
|
func (s *Ethereum) EthVersion() int { return int(s.protocolManager.SubProtocols[0].Version) }
|
|
func (s *Ethereum) NetVersion() int { return s.netVersionId }
|
|
func (s *Ethereum) ShhVersion() int { return s.shhVersionId }
|
|
func (s *Ethereum) Downloader() *downloader.Downloader { return s.protocolManager.downloader }
|
|
|
|
// Start the ethereum
|
|
func (s *Ethereum) Start() error {
|
|
jsonlogger.LogJson(&logger.LogStarting{
|
|
ClientString: s.net.Name,
|
|
ProtocolVersion: s.EthVersion(),
|
|
})
|
|
err := s.net.Start()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
// periodically flush databases
|
|
go s.syncDatabases()
|
|
|
|
if s.AutoDAG {
|
|
s.StartAutoDAG()
|
|
}
|
|
|
|
s.protocolManager.Start()
|
|
|
|
if s.whisper != nil {
|
|
s.whisper.Start()
|
|
}
|
|
|
|
glog.V(logger.Info).Infoln("Server started")
|
|
return nil
|
|
}
|
|
|
|
// sync databases every minute. If flushing fails we exit immediatly. The system
|
|
// may not continue under any circumstances.
|
|
func (s *Ethereum) syncDatabases() {
|
|
ticker := time.NewTicker(1 * time.Minute)
|
|
done:
|
|
for {
|
|
select {
|
|
case <-ticker.C:
|
|
// don't change the order of database flushes
|
|
if err := s.extraDb.Flush(); err != nil {
|
|
glog.Fatalf("fatal error: flush extraDb: %v (Restart your node. We are aware of this issue)\n", err)
|
|
}
|
|
if err := s.stateDb.Flush(); err != nil {
|
|
glog.Fatalf("fatal error: flush stateDb: %v (Restart your node. We are aware of this issue)\n", err)
|
|
}
|
|
if err := s.blockDb.Flush(); err != nil {
|
|
glog.Fatalf("fatal error: flush blockDb: %v (Restart your node. We are aware of this issue)\n", err)
|
|
}
|
|
case <-s.shutdownChan:
|
|
break done
|
|
}
|
|
}
|
|
|
|
s.blockDb.Close()
|
|
s.stateDb.Close()
|
|
s.extraDb.Close()
|
|
|
|
close(s.databasesClosed)
|
|
}
|
|
|
|
func (s *Ethereum) StartForTest() {
|
|
jsonlogger.LogJson(&logger.LogStarting{
|
|
ClientString: s.net.Name,
|
|
ProtocolVersion: s.EthVersion(),
|
|
})
|
|
}
|
|
|
|
// AddPeer connects to the given node and maintains the connection until the
|
|
// server is shut down. If the connection fails for any reason, the server will
|
|
// attempt to reconnect the peer.
|
|
func (self *Ethereum) AddPeer(nodeURL string) error {
|
|
n, err := discover.ParseNode(nodeURL)
|
|
if err != nil {
|
|
return fmt.Errorf("invalid node URL: %v", err)
|
|
}
|
|
self.net.AddPeer(n)
|
|
return nil
|
|
}
|
|
|
|
func (s *Ethereum) Stop() {
|
|
s.net.Stop()
|
|
s.chainManager.Stop()
|
|
s.protocolManager.Stop()
|
|
s.txPool.Stop()
|
|
s.eventMux.Stop()
|
|
if s.whisper != nil {
|
|
s.whisper.Stop()
|
|
}
|
|
s.StopAutoDAG()
|
|
|
|
close(s.shutdownChan)
|
|
}
|
|
|
|
// This function will wait for a shutdown and resumes main thread execution
|
|
func (s *Ethereum) WaitForShutdown() {
|
|
<-s.databasesClosed
|
|
<-s.shutdownChan
|
|
}
|
|
|
|
// StartAutoDAG() spawns a go routine that checks the DAG every autoDAGcheckInterval
|
|
// by default that is 10 times per epoch
|
|
// in epoch n, if we past autoDAGepochHeight within-epoch blocks,
|
|
// it calls ethash.MakeDAG to pregenerate the DAG for the next epoch n+1
|
|
// if it does not exist yet as well as remove the DAG for epoch n-1
|
|
// the loop quits if autodagquit channel is closed, it can safely restart and
|
|
// stop any number of times.
|
|
// For any more sophisticated pattern of DAG generation, use CLI subcommand
|
|
// makedag
|
|
func (self *Ethereum) StartAutoDAG() {
|
|
if self.autodagquit != nil {
|
|
return // already started
|
|
}
|
|
go func() {
|
|
glog.V(logger.Info).Infof("Automatic pregeneration of ethash DAG ON (ethash dir: %s)", ethash.DefaultDir)
|
|
var nextEpoch uint64
|
|
timer := time.After(0)
|
|
self.autodagquit = make(chan bool)
|
|
for {
|
|
select {
|
|
case <-timer:
|
|
glog.V(logger.Info).Infof("checking DAG (ethash dir: %s)", ethash.DefaultDir)
|
|
currentBlock := self.ChainManager().CurrentBlock().NumberU64()
|
|
thisEpoch := currentBlock / epochLength
|
|
if nextEpoch <= thisEpoch {
|
|
if currentBlock%epochLength > autoDAGepochHeight {
|
|
if thisEpoch > 0 {
|
|
previousDag, previousDagFull := dagFiles(thisEpoch - 1)
|
|
os.Remove(filepath.Join(ethash.DefaultDir, previousDag))
|
|
os.Remove(filepath.Join(ethash.DefaultDir, previousDagFull))
|
|
glog.V(logger.Info).Infof("removed DAG for epoch %d (%s)", thisEpoch-1, previousDag)
|
|
}
|
|
nextEpoch = thisEpoch + 1
|
|
dag, _ := dagFiles(nextEpoch)
|
|
if _, err := os.Stat(dag); os.IsNotExist(err) {
|
|
glog.V(logger.Info).Infof("Pregenerating DAG for epoch %d (%s)", nextEpoch, dag)
|
|
err := ethash.MakeDAG(nextEpoch*epochLength, "") // "" -> ethash.DefaultDir
|
|
if err != nil {
|
|
glog.V(logger.Error).Infof("Error generating DAG for epoch %d (%s)", nextEpoch, dag)
|
|
return
|
|
}
|
|
} else {
|
|
glog.V(logger.Error).Infof("DAG for epoch %d (%s)", nextEpoch, dag)
|
|
}
|
|
}
|
|
}
|
|
timer = time.After(autoDAGcheckInterval)
|
|
case <-self.autodagquit:
|
|
return
|
|
}
|
|
}
|
|
}()
|
|
}
|
|
|
|
// dagFiles(epoch) returns the two alternative DAG filenames (not a path)
|
|
// 1) <revision>-<hex(seedhash[8])> 2) full-R<revision>-<hex(seedhash[8])>
|
|
func dagFiles(epoch uint64) (string, string) {
|
|
seedHash, _ := ethash.GetSeedHash(epoch * epochLength)
|
|
dag := fmt.Sprintf("full-R%d-%x", ethashRevision, seedHash[:8])
|
|
return dag, "full-R" + dag
|
|
}
|
|
|
|
// stopAutoDAG stops automatic DAG pregeneration by quitting the loop
|
|
func (self *Ethereum) StopAutoDAG() {
|
|
if self.autodagquit != nil {
|
|
close(self.autodagquit)
|
|
self.autodagquit = nil
|
|
}
|
|
glog.V(logger.Info).Infof("Automatic pregeneration of ethash DAG OFF (ethash dir: %s)", ethash.DefaultDir)
|
|
}
|
|
|
|
/*
|
|
// The databases were previously tied to protocol versions. Currently we
|
|
// are moving away from this decision as approaching Frontier. The below
|
|
// code was left in for now but should eventually be just dropped.
|
|
|
|
func saveProtocolVersion(db common.Database, protov int) {
|
|
d, _ := db.Get([]byte("ProtocolVersion"))
|
|
protocolVersion := common.NewValue(d).Uint()
|
|
|
|
if protocolVersion == 0 {
|
|
db.Put([]byte("ProtocolVersion"), common.NewValue(protov).Bytes())
|
|
}
|
|
}
|
|
*/
|
|
|
|
func saveBlockchainVersion(db common.Database, bcVersion int) {
|
|
d, _ := db.Get([]byte("BlockchainVersion"))
|
|
blockchainVersion := common.NewValue(d).Uint()
|
|
|
|
if blockchainVersion == 0 {
|
|
db.Put([]byte("BlockchainVersion"), common.NewValue(bcVersion).Bytes())
|
|
}
|
|
}
|
|
|
|
func (self *Ethereum) Solc() (*compiler.Solidity, error) {
|
|
var err error
|
|
if self.solc == nil {
|
|
self.solc, err = compiler.New(self.SolcPath)
|
|
}
|
|
return self.solc, err
|
|
}
|
|
|
|
// set in js console via admin interface or wrapper from cli flags
|
|
func (self *Ethereum) SetSolc(solcPath string) (*compiler.Solidity, error) {
|
|
self.SolcPath = solcPath
|
|
self.solc = nil
|
|
return self.Solc()
|
|
}
|