Golang Context.GlobalInt方法代碼示例

// MakeChain creates a chain manager from set command line flags.
func MakeChain(ctx *cli.Context) (chain *core.BlockChain, chainDb ethdb.Database) {
	datadir := MustMakeDataDir(ctx)
	cache := ctx.GlobalInt(CacheFlag.Name)

	var err error
	if chainDb, err = ethdb.NewLDBDatabase(filepath.Join(datadir, "chaindata"), cache); err != nil {
		Fatalf("Could not open database: %v", err)
	}
	if ctx.GlobalBool(OlympicFlag.Name) {
		_, err := core.WriteTestNetGenesisBlock(chainDb)
		if err != nil {
			glog.Fatalln(err)
		}
	}

	eventMux := new(event.TypeMux)
	pow := ethash.New()
	//genesis := core.GenesisBlock(uint64(ctx.GlobalInt(GenesisNonceFlag.Name)), blockDB)
	chain, err = core.NewBlockChain(chainDb, pow, eventMux)
	if err != nil {
		Fatalf("Could not start chainmanager: %v", err)
	}

	return chain, chainDb
}

// SetupLogger configures glog from the logging-related command line flags.
func SetupLogger(ctx *cli.Context) {
	glog.SetV(ctx.GlobalInt(VerbosityFlag.Name))
	glog.CopyStandardLogTo("INFO")
	glog.SetToStderr(true)
	if ctx.GlobalIsSet(LogFileFlag.Name) {
		logger.New("", ctx.GlobalString(LogFileFlag.Name), ctx.GlobalInt(VerbosityFlag.Name))
	}
	if ctx.GlobalIsSet(VMDebugFlag.Name) {
		vm.Debug = ctx.GlobalBool(VMDebugFlag.Name)
	}
}

// StartWS starts a websocket JSON-RPC API server.
func StartWS(stack *node.Node, ctx *cli.Context) error {
	for _, api := range stack.APIs() {
		if adminApi, ok := api.Service.(*node.PrivateAdminAPI); ok {
			address := ctx.GlobalString(WSListenAddrFlag.Name)
			port := ctx.GlobalInt(WSAllowedDomainsFlag.Name)
			allowedDomains := ctx.GlobalString(WSAllowedDomainsFlag.Name)
			apiStr := ""
			if ctx.GlobalIsSet(WSApiFlag.Name) {
				apiStr = ctx.GlobalString(WSApiFlag.Name)
			}

			_, err := adminApi.StartWS(address, port, allowedDomains, apiStr)
			return err
		}
	}

	glog.V(logger.Error).Infof("Unable to start RPC-WS interface, could not find admin API")
	return errors.New("Unable to start RPC-WS interface")
}

func StartPProf(ctx *cli.Context) {
	address := fmt.Sprintf("localhost:%d", ctx.GlobalInt(PProfPortFlag.Name))
	go func() {
		log.Println(http.ListenAndServe(address, nil))
	}()
}

// SetupVM configured the VM package's global settings
func SetupVM(ctx *cli.Context) {
	vm.EnableJit = ctx.GlobalBool(VMEnableJitFlag.Name)
	vm.ForceJit = ctx.GlobalBool(VMForceJitFlag.Name)
	vm.SetJITCacheSize(ctx.GlobalInt(VMJitCacheFlag.Name))
}

// MakeSystemNode sets up a local node, configures the services to launch and
// assembles the P2P protocol stack.
func MakeSystemNode(name, version string, extra []byte, ctx *cli.Context) *node.Node {
	// Avoid conflicting network flags
	networks, netFlags := 0, []cli.BoolFlag{DevModeFlag, TestNetFlag, OlympicFlag}
	for _, flag := range netFlags {
		if ctx.GlobalBool(flag.Name) {
			networks++
		}
	}
	if networks > 1 {
		Fatalf("The %v flags are mutually exclusive", netFlags)
	}
	// Configure the node's service container
	stackConf := &node.Config{
		DataDir:         MustMakeDataDir(ctx),
		PrivateKey:      MakeNodeKey(ctx),
		Name:            MakeNodeName(name, version, ctx),
		NoDiscovery:     ctx.GlobalBool(NoDiscoverFlag.Name),
		BootstrapNodes:  MakeBootstrapNodes(ctx),
		ListenAddr:      MakeListenAddress(ctx),
		NAT:             MakeNAT(ctx),
		MaxPeers:        ctx.GlobalInt(MaxPeersFlag.Name),
		MaxPendingPeers: ctx.GlobalInt(MaxPendingPeersFlag.Name),
	}
	// Configure the Ethereum service
	accman := MakeAccountManager(ctx)

	ethConf := &eth.Config{
		Genesis:                 MakeGenesisBlock(ctx),
		FastSync:                ctx.GlobalBool(FastSyncFlag.Name),
		BlockChainVersion:       ctx.GlobalInt(BlockchainVersionFlag.Name),
		DatabaseCache:           ctx.GlobalInt(CacheFlag.Name),
		NetworkId:               ctx.GlobalInt(NetworkIdFlag.Name),
		AccountManager:          accman,
		Etherbase:               MakeEtherbase(accman, ctx),
		MinerThreads:            ctx.GlobalInt(MinerThreadsFlag.Name),
		ExtraData:               MakeMinerExtra(extra, ctx),
		NatSpec:                 ctx.GlobalBool(NatspecEnabledFlag.Name),
		DocRoot:                 ctx.GlobalString(DocRootFlag.Name),
		GasPrice:                common.String2Big(ctx.GlobalString(GasPriceFlag.Name)),
		GpoMinGasPrice:          common.String2Big(ctx.GlobalString(GpoMinGasPriceFlag.Name)),
		GpoMaxGasPrice:          common.String2Big(ctx.GlobalString(GpoMaxGasPriceFlag.Name)),
		GpoFullBlockRatio:       ctx.GlobalInt(GpoFullBlockRatioFlag.Name),
		GpobaseStepDown:         ctx.GlobalInt(GpobaseStepDownFlag.Name),
		GpobaseStepUp:           ctx.GlobalInt(GpobaseStepUpFlag.Name),
		GpobaseCorrectionFactor: ctx.GlobalInt(GpobaseCorrectionFactorFlag.Name),
		SolcPath:                ctx.GlobalString(SolcPathFlag.Name),
		AutoDAG:                 ctx.GlobalBool(AutoDAGFlag.Name) || ctx.GlobalBool(MiningEnabledFlag.Name),
	}
	// Configure the Whisper service
	shhEnable := ctx.GlobalBool(WhisperEnabledFlag.Name)

	// Override any default configs in dev mode or the test net
	switch {
	case ctx.GlobalBool(OlympicFlag.Name):
		if !ctx.GlobalIsSet(NetworkIdFlag.Name) {
			ethConf.NetworkId = 1
		}
		if !ctx.GlobalIsSet(GenesisFileFlag.Name) {
			ethConf.Genesis = core.OlympicGenesisBlock()
		}

	case ctx.GlobalBool(TestNetFlag.Name):
		if !ctx.GlobalIsSet(NetworkIdFlag.Name) {
			ethConf.NetworkId = 2
		}
		if !ctx.GlobalIsSet(GenesisFileFlag.Name) {
			ethConf.Genesis = core.TestNetGenesisBlock()
		}
		state.StartingNonce = 1048576 // (2**20)

	case ctx.GlobalBool(DevModeFlag.Name):
		// Override the base network stack configs
		if !ctx.GlobalIsSet(DataDirFlag.Name) {
			stackConf.DataDir = filepath.Join(os.TempDir(), "/ethereum_dev_mode")
		}
		if !ctx.GlobalIsSet(MaxPeersFlag.Name) {
			stackConf.MaxPeers = 0
		}
		if !ctx.GlobalIsSet(ListenPortFlag.Name) {
			stackConf.ListenAddr = ":0"
		}
		// Override the Ethereum protocol configs
		if !ctx.GlobalIsSet(GenesisFileFlag.Name) {
			ethConf.Genesis = core.OlympicGenesisBlock()
		}
		if !ctx.GlobalIsSet(GasPriceFlag.Name) {
			ethConf.GasPrice = new(big.Int)
		}
		if !ctx.GlobalIsSet(WhisperEnabledFlag.Name) {
			shhEnable = true
		}
		if !ctx.GlobalIsSet(VMDebugFlag.Name) {
			vm.Debug = true
		}
		ethConf.PowTest = true
	}
	// Assemble and return the protocol stack
	stack, err := node.New(stackConf)
//.........這裏部分代碼省略.........

// MakeListenAddress creates a TCP listening address string from set command
// line flags.
func MakeListenAddress(ctx *cli.Context) string {
	return fmt.Sprintf(":%d", ctx.GlobalInt(ListenPortFlag.Name))
}