github.com/aquanetwork/aquachain@v1.7.8/cmd/utils/flags.go

// Copyright 2015 The aquachain Authors
// This file is part of aquachain.
//
// aquachain is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// aquachain 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with aquachain. If not, see <http://www.gnu.org/licenses/>.

// Package utils contains internal helper functions for aquachain commands.
package utils

import (
	"crypto/ecdsa"
	"fmt"
	"io/ioutil"
	"math/big"
	"os"
	"path/filepath"
	"runtime"
	"strconv"
	"strings"

	"gitlab.com/aquachain/aquachain/aqua"
	"gitlab.com/aquachain/aquachain/aqua/accounts"
	"gitlab.com/aquachain/aquachain/aqua/accounts/keystore"
	"gitlab.com/aquachain/aquachain/aqua/downloader"
	"gitlab.com/aquachain/aquachain/aqua/gasprice"
	"gitlab.com/aquachain/aquachain/aquadb"
	"gitlab.com/aquachain/aquachain/common"
	"gitlab.com/aquachain/aquachain/common/fdlimit"
	"gitlab.com/aquachain/aquachain/common/log"
	"gitlab.com/aquachain/aquachain/common/metrics"
	"gitlab.com/aquachain/aquachain/consensus"
	"gitlab.com/aquachain/aquachain/consensus/aquahash"
	"gitlab.com/aquachain/aquachain/core"
	"gitlab.com/aquachain/aquachain/core/state"
	"gitlab.com/aquachain/aquachain/core/vm"
	"gitlab.com/aquachain/aquachain/crypto"
	"gitlab.com/aquachain/aquachain/node"
	"gitlab.com/aquachain/aquachain/opt/aquastats"
	whisper "gitlab.com/aquachain/aquachain/opt/whisper/whisperv6"
	"gitlab.com/aquachain/aquachain/p2p"
	"gitlab.com/aquachain/aquachain/p2p/discover"
	"gitlab.com/aquachain/aquachain/p2p/discv5"
	"gitlab.com/aquachain/aquachain/p2p/nat"
	"gitlab.com/aquachain/aquachain/p2p/netutil"
	"gitlab.com/aquachain/aquachain/params"
	"gopkg.in/urfave/cli.v1"
)

var (
	CommandHelpTemplate = `{{.cmd.Name}}{{if .cmd.Subcommands}} command{{end}}{{if .cmd.Flags}} [command options]{{end}} [arguments...]
{{if .cmd.Description}}{{.cmd.Description}}
{{end}}{{if .cmd.Subcommands}}
SUBCOMMANDS:
	{{range .cmd.Subcommands}}{{.cmd.Name}}{{with .cmd.ShortName}}, {{.cmd}}{{end}}{{ "\t" }}{{.cmd.Usage}}
	{{end}}{{end}}{{if .categorizedFlags}}
{{range $idx, $categorized := .categorizedFlags}}{{$categorized.Name}} OPTIONS:
{{range $categorized.Flags}}{{"\t"}}{{.}}
{{end}}
{{end}}{{end}}`
)

func init() {
	cli.AppHelpTemplate = `{{.Name}} {{if .Flags}}[global options] {{end}}command{{if .Flags}} [command options]{{end}} [arguments...]

VERSION:
   {{.Version}}

COMMANDS:
   {{range .Commands}}{{.Name}}{{with .ShortName}}, {{.}}{{end}}{{ "\t" }}{{.Usage}}
   {{end}}{{if .Flags}}
GLOBAL OPTIONS:
   {{range .Flags}}{{.}}
   {{end}}{{end}}
`

	cli.CommandHelpTemplate = CommandHelpTemplate
}

// NewApp creates an app with sane defaults.
func NewApp(gitCommit, usage string) *cli.App {
	app := cli.NewApp()
	app.Name = filepath.Base(os.Args[0])
	app.Author = ""
	//app.Authors = nil
	app.Email = ""
	app.Version = params.Version
	if len(gitCommit) >= 8 {
		app.Version += "-" + gitCommit[:8]
	}
	app.Usage = usage
	return app
}

// These are all the command line flags we support.
// If you add to this list, please remember to include the
// flag in the appropriate command definition.
//
// The flags are defined here so their names and help texts
// are the same for all commands.

var (
	// General settings
	JsonFlag = cli.BoolFlag{
		Name:  "json",
		Usage: "Print paper keypair as json",
	}
	VanityFlag = cli.StringFlag{
		Name:  "vanity",
		Usage: "Prefix for generating a vanity address",
	}
	// General settings
	DataDirFlag = DirectoryFlag{
		Name:  "datadir",
		Usage: "Data directory for the databases and keystore",
		Value: DirectoryString{node.DefaultDataDir()},
	}
	KeyStoreDirFlag = DirectoryFlag{
		Name:  "keystore",
		Usage: "Directory for the keystore (default = inside the datadir)",
	}
	UseUSBFlag = cli.BoolFlag{
		Name:  "usb",
		Usage: "Enables monitoring for and managing USB hardware wallets",
	}
	NetworkIdFlag = cli.Uint64Flag{
		Name:  "networkid",
		Usage: "Network identifier (integer, 1=Frontier, 2=Morden (disused), 3=Ropsten, 4=Testnet2)",
		Value: aqua.DefaultConfig.NetworkId,
	}
	TestnetFlag = cli.BoolFlag{
		Name:  "testnet",
		Usage: "Testnet: pre-configured proof-of-work test network",
	}
	Testnet2Flag = cli.BoolFlag{
		Name:  "testnet2",
		Usage: "Testnet2: pre-configured proof-of-authority test network",
	}
	DeveloperFlag = cli.BoolFlag{
		Name:  "dev",
		Usage: "Ephemeral proof-of-authority network with a pre-funded developer account, mining enabled",
	}
	DeveloperPeriodFlag = cli.IntFlag{
		Name:  "dev.period",
		Usage: "Block period to use in developer mode (0 = mine only if transaction pending)",
	}
	IdentityFlag = cli.StringFlag{
		Name:  "identity",
		Usage: "Custom node name",
	}
	DocRootFlag = DirectoryFlag{
		Name:  "docroot",
		Usage: "Document Root for HTTPClient file scheme",
		Value: DirectoryString{homeDir()},
	}
	FastSyncFlag = cli.BoolFlag{
		Name:  "fast",
		Usage: "Enable fast syncing through state downloads",
	}
	defaultSyncMode = aqua.DefaultConfig.SyncMode
	SyncModeFlag    = TextMarshalerFlag{
		Name:  "syncmode",
		Usage: `Blockchain sync mode ("fast", "full")`,
		Value: &defaultSyncMode,
	}
	GCModeFlag = cli.StringFlag{
		Name:  "gcmode",
		Usage: `Blockchain garbage collection mode ("full", "archive") *SYNC WITH '-gcmode archive' FOR COMPLETE CIRCULATING SUPPLY*`,
		Value: "full",
	}
	// Aquahash settings
	AquahashCacheDirFlag = DirectoryFlag{
		Name:  "aquahash.cachedir",
		Usage: "Directory to store the aquahash verification caches (default = inside the datadir)",
	}
	AquahashCachesInMemoryFlag = cli.IntFlag{
		Name:  "aquahash.cachesinmem",
		Usage: "Number of recent aquahash caches to keep in memory (16MB each)",
		Value: aqua.DefaultConfig.Aquahash.CachesInMem,
	}
	AquahashCachesOnDiskFlag = cli.IntFlag{
		Name:  "aquahash.cachesondisk",
		Usage: "Number of recent aquahash caches to keep on disk (16MB each)",
		Value: aqua.DefaultConfig.Aquahash.CachesOnDisk,
	}
	AquahashDatasetDirFlag = DirectoryFlag{
		Name:  "aquahash.dagdir",
		Usage: "Directory to store the aquahash mining DAGs (default = inside home folder)",
		Value: DirectoryString{aqua.DefaultConfig.Aquahash.DatasetDir},
	}
	AquahashDatasetsInMemoryFlag = cli.IntFlag{
		Name:  "aquahash.dagsinmem",
		Usage: "Number of recent aquahash mining DAGs to keep in memory (1+GB each)",
		Value: aqua.DefaultConfig.Aquahash.DatasetsInMem,
	}
	AquahashDatasetsOnDiskFlag = cli.IntFlag{
		Name:  "aquahash.dagsondisk",
		Usage: "Number of recent aquahash mining DAGs to keep on disk (1+GB each)",
		Value: aqua.DefaultConfig.Aquahash.DatasetsOnDisk,
	}
	// Transaction pool settings
	TxPoolNoLocalsFlag = cli.BoolFlag{
		Name:  "txpool.nolocals",
		Usage: "Disables price exemptions for locally submitted transactions",
	}
	TxPoolJournalFlag = cli.StringFlag{
		Name:  "txpool.journal",
		Usage: "Disk journal for local transaction to survive node restarts",
		Value: core.DefaultTxPoolConfig.Journal,
	}
	TxPoolRejournalFlag = cli.DurationFlag{
		Name:  "txpool.rejournal",
		Usage: "Time interval to regenerate the local transaction journal",
		Value: core.DefaultTxPoolConfig.Rejournal,
	}
	TxPoolPriceLimitFlag = cli.Uint64Flag{
		Name:  "txpool.pricelimit",
		Usage: "Minimum gas price limit to enforce for acceptance into the pool",
		Value: aqua.DefaultConfig.TxPool.PriceLimit,
	}
	TxPoolPriceBumpFlag = cli.Uint64Flag{
		Name:  "txpool.pricebump",
		Usage: "Price bump percentage to replace an already existing transaction",
		Value: aqua.DefaultConfig.TxPool.PriceBump,
	}
	TxPoolAccountSlotsFlag = cli.Uint64Flag{
		Name:  "txpool.accountslots",
		Usage: "Minimum number of executable transaction slots guaranteed per account",
		Value: aqua.DefaultConfig.TxPool.AccountSlots,
	}
	TxPoolGlobalSlotsFlag = cli.Uint64Flag{
		Name:  "txpool.globalslots",
		Usage: "Maximum number of executable transaction slots for all accounts",
		Value: aqua.DefaultConfig.TxPool.GlobalSlots,
	}
	TxPoolAccountQueueFlag = cli.Uint64Flag{
		Name:  "txpool.accountqueue",
		Usage: "Maximum number of non-executable transaction slots permitted per account",
		Value: aqua.DefaultConfig.TxPool.AccountQueue,
	}
	TxPoolGlobalQueueFlag = cli.Uint64Flag{
		Name:  "txpool.globalqueue",
		Usage: "Maximum number of non-executable transaction slots for all accounts",
		Value: aqua.DefaultConfig.TxPool.GlobalQueue,
	}
	TxPoolLifetimeFlag = cli.DurationFlag{
		Name:  "txpool.lifetime",
		Usage: "Maximum amount of time non-executable transaction are queued",
		Value: aqua.DefaultConfig.TxPool.Lifetime,
	}
	// Performance tuning settings
	CacheFlag = cli.IntFlag{
		Name:  "cache",
		Usage: "Megabytes of memory allocated to internal caching (consider 2048)",
		Value: 1024,
	}
	CacheDatabaseFlag = cli.IntFlag{
		Name:  "cache.database",
		Usage: "Percentage of cache memory allowance to use for database io",
		Value: 75,
	}
	CacheGCFlag = cli.IntFlag{
		Name:  "cache.gc",
		Usage: "Percentage of cache memory allowance to use for trie pruning",
		Value: 25,
	}
	TrieCacheGenFlag = cli.IntFlag{
		Name:  "trie-cache-gens",
		Usage: "Number of trie node generations to keep in memory",
		Value: int(state.MaxTrieCacheGen),
	}
	// Miner settings
	MiningEnabledFlag = cli.BoolFlag{
		Name:  "mine",
		Usage: "Enable mining",
	}
	MinerThreadsFlag = cli.IntFlag{
		Name:  "minerthreads",
		Usage: "Number of CPU threads to use for mining",
		Value: runtime.NumCPU(),
	}
	TargetGasLimitFlag = cli.Uint64Flag{
		Name:  "targetgaslimit",
		Usage: "Target gas limit sets the artificial target gas floor for the blocks to mine",
		Value: params.GenesisGasLimit,
	}
	AquabaseFlag = cli.StringFlag{
		Name:  "aquabase",
		Usage: "Public address for block mining rewards (default = first account created)",
		Value: "0",
	}
	GasPriceFlag = BigFlag{
		Name:  "gasprice",
		Usage: "Minimal gas price to accept for mining a transactions",
		Value: aqua.DefaultConfig.GasPrice,
	}
	ExtraDataFlag = cli.StringFlag{
		Name:  "extradata",
		Usage: "Block extra data set by the miner (default = client version)",
	}
	// Account settings
	UnlockedAccountFlag = cli.StringFlag{
		Name:  "unlock",
		Usage: "Comma separated list of accounts to unlock",
		Value: "",
	}
	PasswordFileFlag = cli.StringFlag{
		Name:  "password",
		Usage: "Password file to use for non-interactive password input",
		Value: "",
	}

	VMEnableDebugFlag = cli.BoolFlag{
		Name:  "vmdebug",
		Usage: "Record information useful for VM and contract debugging",
	}
	// Logging and debug settings
	AquaStatsURLFlag = cli.StringFlag{
		Name:  "aquastats",
		Usage: "Reporting URL of a aquastats service (nodename:secret@host:port)",
	}
	MetricsEnabledFlag = cli.BoolFlag{
		Name:  metrics.MetricsEnabledFlag,
		Usage: "Enable metrics collection and reporting",
	}
	FakePoWFlag = cli.BoolFlag{
		Name:  "fakepow",
		Usage: "Disables proof-of-work verification",
	}
	NoCompactionFlag = cli.BoolFlag{
		Name:  "nocompaction",
		Usage: "Disables db compaction after import",
	}
	// RPC settings
	RPCEnabledFlag = cli.BoolFlag{
		Name:  "rpc",
		Usage: "Enable the HTTP-RPC server",
	}
	RPCListenAddrFlag = cli.StringFlag{
		Name:  "rpcaddr",
		Usage: "HTTP-RPC server listening interface",
		Value: node.DefaultHTTPHost,
	}
	RPCPortFlag = cli.IntFlag{
		Name:  "rpcport",
		Usage: "HTTP-RPC server listening port",
		Value: node.DefaultHTTPPort,
	}
	RPCCORSDomainFlag = cli.StringFlag{
		Name:  "rpccorsdomain",
		Usage: "Comma separated list of domains from which to accept cross origin requests (browser enforced)",
		Value: "",
	}
	RPCVirtualHostsFlag = cli.StringFlag{
		Name:  "rpcvhosts",
		Usage: "Comma separated list of virtual hostnames from which to accept requests (server enforced). Accepts '*' wildcard.",
		Value: "localhost",
	}

	RPCApiFlag = cli.StringFlag{
		Name:  "rpcapi",
		Usage: "API's offered over the HTTP-RPC interface",
		Value: "",
	}
	RPCUnlockFlag = cli.BoolFlag{
		Name:  "UNSAFE_RPC_UNLOCK",
		Usage: "",
	}
	IPCDisabledFlag = cli.BoolFlag{
		Name:  "ipcdisable",
		Usage: "Disable the IPC-RPC server",
	}
	IPCPathFlag = DirectoryFlag{
		Name:  "ipcpath",
		Usage: "Filename for IPC socket/pipe within the datadir (explicit paths escape it)",
	}
	WSEnabledFlag = cli.BoolFlag{
		Name:  "ws",
		Usage: "Enable the WS-RPC server",
	}
	WSListenAddrFlag = cli.StringFlag{
		Name:  "wsaddr",
		Usage: "WS-RPC server listening interface",
		Value: node.DefaultWSHost,
	}
	WSPortFlag = cli.IntFlag{
		Name:  "wsport",
		Usage: "WS-RPC server listening port",
		Value: node.DefaultWSPort,
	}
	WSApiFlag = cli.StringFlag{
		Name:  "wsapi",
		Usage: "API's offered over the WS-RPC interface",
		Value: "",
	}
	WSAllowedOriginsFlag = cli.StringFlag{
		Name:  "wsorigins",
		Usage: "Origins from which to accept websockets requests",
		Value: "",
	}
	RPCAllowIPFlag = cli.StringFlag{
		Name:  "allowip",
		Usage: "Comma separated list of IP allowed to access RPC (http/ws)",
		Value: "127.0.0.1",
	}
	ExecFlag = cli.StringFlag{
		Name:  "exec",
		Usage: "Execute JavaScript statement",
	}
	PreloadJSFlag = cli.StringFlag{
		Name:  "preload",
		Usage: "Comma separated list of JavaScript files to preload into the console",
	}

	// Network Settings
	MaxPeersFlag = cli.IntFlag{
		Name:  "maxpeers",
		Usage: "Maximum number of network peers (network disabled if set to 0)",
		Value: 25,
	}
	MaxPendingPeersFlag = cli.IntFlag{
		Name:  "maxpendpeers",
		Usage: "Maximum number of pending connection attempts (defaults used if set to 0)",
		Value: 0,
	}
	ListenPortFlag = cli.IntFlag{
		Name:  "port",
		Usage: "Network listening port",
		Value: 21303,
	}
	BootnodesFlag = cli.StringFlag{
		Name:  "bootnodes",
		Usage: "Comma separated enode URLs for P2P discovery bootstrap (set v4+v5 instead for light servers)",
		Value: "",
	}
	BootnodesV4Flag = cli.StringFlag{
		Name:  "bootnodesv4",
		Usage: "Comma separated enode URLs for P2P v4 discovery bootstrap (light server, full nodes)",
		Value: "",
	}
	BootnodesV5Flag = cli.StringFlag{
		Name:  "bootnodesv5",
		Usage: "Comma separated enode URLs for P2P v5 discovery bootstrap (light server, light nodes)",
		Value: "",
	}
	NodeKeyFileFlag = cli.StringFlag{
		Name:  "nodekey",
		Usage: "P2P node key file",
	}
	NodeKeyHexFlag = cli.StringFlag{
		Name:  "nodekeyhex",
		Usage: "P2P node key as hex (for testing)",
	}
	NATFlag = cli.StringFlag{
		Name:  "nat",
		Usage: "NAT port mapping mechanism (any|none|upnp|pmp|extip:<IP>)",
		Value: "any",
	}
	NoDiscoverFlag = cli.BoolFlag{
		Name:  "nodiscover",
		Usage: "Disables the peer discovery mechanism (manual peer addition)",
	}
	OfflineFlag = cli.BoolFlag{
		Name:  "offline",
		Usage: "Disables peer discovery and sets nat=none, still listens on tcp/udp port",
	}
	DiscoveryV5Flag = cli.BoolFlag{
		Name:  "v5disc",
		Usage: "Enables the experimental RLPx V5 (Topic Discovery) mechanism",
	}
	NetrestrictFlag = cli.StringFlag{
		Name:  "netrestrict",
		Usage: "Restricts network communication to the given IP networks (CIDR masks)",
	}

	// ATM the url is left to the user and deployment to
	JSpathFlag = cli.StringFlag{
		Name:  "jspath",
		Usage: "JavaScript root path for `loadScript`",
		Value: ".",
	}

	// Gas price oracle settings
	GpoBlocksFlag = cli.IntFlag{
		Name:  "gpoblocks",
		Usage: "Number of recent blocks to check for gas prices",
		Value: aqua.DefaultConfig.GPO.Blocks,
	}
	GpoPercentileFlag = cli.IntFlag{
		Name:  "gpopercentile",
		Usage: "Suggested gas price is the given percentile of a set of recent transaction gas prices",
		Value: aqua.DefaultConfig.GPO.Percentile,
	}
	WhisperEnabledFlag = cli.BoolFlag{
		Name:  "shh",
		Usage: "Enable Whisper",
	}
	WhisperMaxMessageSizeFlag = cli.IntFlag{
		Name:  "shh.maxmessagesize",
		Usage: "Max message size accepted",
		Value: int(whisper.DefaultMaxMessageSize),
	}
	WhisperMinPOWFlag = cli.Float64Flag{
		Name:  "shh.pow",
		Usage: "Minimum POW accepted",
		Value: whisper.DefaultMinimumPoW,
	}
)

// MakeDataDir retrieves the currently requested data directory, terminating
// if none (or the empty string) is specified. If the node is starting a testnet,
// the a subdirectory of the specified datadir will be used.
func MakeDataDir(ctx *cli.Context) string {
	if path := ctx.GlobalString(DataDirFlag.Name); path != "" {
		if ctx.GlobalBool(TestnetFlag.Name) {
			return filepath.Join(path, "testnet")
		}
		if ctx.GlobalBool(Testnet2Flag.Name) {
			return filepath.Join(path, "testnet2")
		}
		return path
	}
	Fatalf("Cannot determine default data directory, please set manually (--datadir)")
	return ""
}

// setNodeKey creates a node key from set command line flags, either loading it
// from a file or as a specified hex value. If neither flags were provided, this
// method returns nil and an emphemeral key is to be generated.
func setNodeKey(ctx *cli.Context, cfg *p2p.Config) {
	var (
		hex  = ctx.GlobalString(NodeKeyHexFlag.Name)
		file = ctx.GlobalString(NodeKeyFileFlag.Name)
		key  *ecdsa.PrivateKey
		err  error
	)
	switch {
	case file != "" && hex != "":
		Fatalf("Options %q and %q are mutually exclusive", NodeKeyFileFlag.Name, NodeKeyHexFlag.Name)
	case file != "":
		if key, err = crypto.LoadECDSA(file); err != nil {
			Fatalf("Option %q: %v", NodeKeyFileFlag.Name, err)
		}
		cfg.PrivateKey = key
	case hex != "":
		if key, err = crypto.HexToECDSA(hex); err != nil {
			Fatalf("Option %q: %v", NodeKeyHexFlag.Name, err)
		}
		cfg.PrivateKey = key
	}
}

// setNodeUserIdent creates the user identifier from CLI flags.
func setNodeUserIdent(ctx *cli.Context, cfg *node.Config) {
	if identity := ctx.GlobalString(IdentityFlag.Name); len(identity) > 0 {
		cfg.UserIdent = identity
	}
}

// setBootstrapNodes creates a list of bootstrap nodes from the command line
// flags, reverting to pre-configured ones if none have been specified.
func setBootstrapNodes(ctx *cli.Context, cfg *p2p.Config) {
	urls := params.MainnetBootnodes
	switch {
	case ctx.GlobalIsSet(BootnodesFlag.Name) || ctx.GlobalIsSet(BootnodesV4Flag.Name):
		if ctx.GlobalIsSet(BootnodesV4Flag.Name) {
			urls = strings.Split(ctx.GlobalString(BootnodesV4Flag.Name), ",")
		} else {
			urls = strings.Split(ctx.GlobalString(BootnodesFlag.Name), ",")
		}
	case ctx.GlobalBool(TestnetFlag.Name):
		urls = params.TestnetBootnodes
	case ctx.GlobalBool(Testnet2Flag.Name):
		urls = params.Testnet2Bootnodes
	case cfg.BootstrapNodes != nil:
		return // already set, don't apply defaults.
	}

	cfg.BootstrapNodes = make([]*discover.Node, 0, len(urls))
	for _, url := range urls {
		node, err := discover.ParseNode(url)
		if err != nil {
			log.Crit("Bootstrap URL invalid", "enode", url, "err", err)
		}
		cfg.BootstrapNodes = append(cfg.BootstrapNodes, node)
	}
}

// setBootstrapNodesV5 creates a list of bootstrap nodes from the command line
// flags, reverting to pre-configured ones if none have been specified.
func setBootstrapNodesV5(ctx *cli.Context, cfg *p2p.Config) {
	urls := params.DiscoveryV5Bootnodes
	switch {
	case ctx.GlobalIsSet(BootnodesFlag.Name) || ctx.GlobalIsSet(BootnodesV5Flag.Name):
		if ctx.GlobalIsSet(BootnodesV5Flag.Name) {
			urls = strings.Split(ctx.GlobalString(BootnodesV5Flag.Name), ",")
		} else {
			urls = strings.Split(ctx.GlobalString(BootnodesFlag.Name), ",")
		}
	case ctx.GlobalBool(Testnet2Flag.Name):
		urls = params.Testnet2Bootnodes
	case cfg.BootstrapNodesV5 != nil:
		return // already set, don't apply defaults.
	}

	cfg.BootstrapNodesV5 = make([]*discv5.Node, 0, len(urls))
	for _, url := range urls {
		node, err := discv5.ParseNode(url)
		if err != nil {
			log.Error("Bootstrap URL invalid", "enode", url, "err", err)
			continue
		}
		cfg.BootstrapNodesV5 = append(cfg.BootstrapNodesV5, node)
	}
}

// setListenAddress creates a TCP listening address string from set command
// line flags.
func setListenAddress(ctx *cli.Context, cfg *p2p.Config) {
	if ctx.GlobalIsSet(ListenPortFlag.Name) {
		cfg.ListenAddr = fmt.Sprintf(":%d", ctx.GlobalInt(ListenPortFlag.Name))
	}
}

// setNAT creates a port mapper from command line flags.
func setNAT(ctx *cli.Context, cfg *p2p.Config) {
	if ctx.GlobalIsSet(NATFlag.Name) {
		natif, err := nat.Parse(ctx.GlobalString(NATFlag.Name))
		if err != nil {
			Fatalf("Option %s: %v", NATFlag.Name, err)
		}
		cfg.NAT = natif
	}
	if ctx.GlobalIsSet(OfflineFlag.Name) {
		cfg.NAT = nil
	}
}

// splitAndTrim splits input separated by a comma
// and trims excessive white space from the substrings.
func splitAndTrim(input string) []string {
	result := strings.Split(input, ",")
	for i, r := range result {
		result[i] = strings.TrimSpace(r)
	}
	return result
}

// setHTTP creates the HTTP RPC listener interface string from the set
// command line flags, returning empty if the HTTP endpoint is disabled.
func setHTTP(ctx *cli.Context, cfg *node.Config) {
	if ctx.GlobalBool(RPCEnabledFlag.Name) && cfg.HTTPHost == "" {
		cfg.HTTPHost = "127.0.0.1"
		if ctx.GlobalIsSet(RPCListenAddrFlag.Name) && ctx.GlobalIsSet(UnlockedAccountFlag.Name) && !ctx.GlobalIsSet(RPCUnlockFlag.Name) {
			Fatalf("Woah there! By default, using -rpc and -unlock is \"safe\", (localhost).\n" +
				"But you shouldn't use --rpcaddr with --unlock flag.\n" +
				"If you really know what you are doing and would like to unlock a wallet while" +
				"hosting a public HTTP RPC node, use the -UNSAFE_RPC_UNLOCK flag.")
		}
		if ctx.GlobalIsSet(RPCListenAddrFlag.Name) {
			cfg.HTTPHost = ctx.GlobalString(RPCListenAddrFlag.Name)
		}
	}

	if ctx.GlobalIsSet(RPCPortFlag.Name) {
		cfg.HTTPPort = ctx.GlobalInt(RPCPortFlag.Name)
	}
	if ctx.GlobalIsSet(RPCCORSDomainFlag.Name) {
		cfg.HTTPCors = splitAndTrim(ctx.GlobalString(RPCCORSDomainFlag.Name))
	}
	if ctx.GlobalIsSet(RPCApiFlag.Name) {
		cfg.HTTPModules = splitAndTrim(ctx.GlobalString(RPCApiFlag.Name))
	}

	cfg.HTTPVirtualHosts = splitAndTrim(ctx.GlobalString(RPCVirtualHostsFlag.Name))
	cfg.RPCAllowIP = splitAndTrim(ctx.GlobalString(RPCAllowIPFlag.Name))
}

// setWS creates the WebSocket RPC listener interface string from the set
// command line flags, returning empty if the HTTP endpoint is disabled.
func setWS(ctx *cli.Context, cfg *node.Config) {
	if ctx.GlobalBool(WSEnabledFlag.Name) && cfg.WSHost == "" {
		cfg.WSHost = "127.0.0.1"
		if ctx.GlobalIsSet(WSListenAddrFlag.Name) {
			cfg.WSHost = ctx.GlobalString(WSListenAddrFlag.Name)
		}
	}

	if ctx.GlobalIsSet(WSPortFlag.Name) {
		cfg.WSPort = ctx.GlobalInt(WSPortFlag.Name)
	}
	if ctx.GlobalIsSet(WSAllowedOriginsFlag.Name) {
		cfg.WSOrigins = splitAndTrim(ctx.GlobalString(WSAllowedOriginsFlag.Name))
	}
	if ctx.GlobalIsSet(WSApiFlag.Name) {
		cfg.WSModules = splitAndTrim(ctx.GlobalString(WSApiFlag.Name))
	}
}

// setIPC creates an IPC path configuration from the set command line flags,
// returning an empty string if IPC was explicitly disabled, or the set path.
func setIPC(ctx *cli.Context, cfg *node.Config) {
	checkExclusive(ctx, IPCDisabledFlag, IPCPathFlag)
	switch {
	case ctx.GlobalBool(IPCDisabledFlag.Name):
		cfg.IPCPath = ""
	case ctx.GlobalIsSet(IPCPathFlag.Name):
		cfg.IPCPath = ctx.GlobalString(IPCPathFlag.Name)
	}
}

// makeDatabaseHandles raises out the number of allowed file handles per process
// for AquaChain and returns half of the allowance to assign to the database.
func makeDatabaseHandles() int {
	limit, err := fdlimit.Current()
	if err != nil {
		Fatalf("Failed to retrieve file descriptor allowance: %v", err)
	}
	if limit < 2048 {
		if err := fdlimit.Raise(2048); err != nil {
			Fatalf("Failed to raise file descriptor allowance: %v", err)
		}
	}
	if limit > 2048 { // cap database file descriptors even if more is available
		limit = 2048
	}
	return limit / 2 // Leave half for networking and other stuff
}

// MakeAddress converts an account specified directly as a hex encoded string or
// a key index in the key store to an internal account representation.
func MakeAddress(ks *keystore.KeyStore, account string) (accounts.Account, error) {
	// If the specified account is a valid address, return it
	if common.IsHexAddress(account) {
		return accounts.Account{Address: common.HexToAddress(account)}, nil
	}
	// Otherwise try to interpret the account as a keystore index
	index, err := strconv.Atoi(account)
	if err != nil || index < 0 {
		return accounts.Account{}, fmt.Errorf("invalid account address or index %q", account)
	}
	log.Warn("-------------------------------------------------------------------")
	log.Warn("Referring to accounts by order in the keystore folder is dangerous!")
	log.Warn("This functionality is deprecated and will be removed in the future!")
	log.Warn("Please use explicit addresses! (can search via `aquachain account list`)")
	log.Warn("-------------------------------------------------------------------")

	accs := ks.Accounts()
	if len(accs) <= index {
		return accounts.Account{}, fmt.Errorf("index %d higher than number of accounts %d", index, len(accs))
	}
	return accs[index], nil
}

// setAquabase retrieves the aquabase either from the directly specified
// command line flags or from the keystore if CLI indexed.
func setAquabase(ctx *cli.Context, ks *keystore.KeyStore, cfg *aqua.Config) {
	if ctx.GlobalIsSet(AquabaseFlag.Name) {
		account, err := MakeAddress(ks, ctx.GlobalString(AquabaseFlag.Name))
		if err != nil {
			Fatalf("Option %q: %v", AquabaseFlag.Name, err)
		}
		cfg.Aquabase = account.Address
	}
}

// MakePasswordList reads password lines from the file specified by the global --password flag.
func MakePasswordList(ctx *cli.Context) []string {
	path := ctx.GlobalString(PasswordFileFlag.Name)
	if path == "" {
		return nil
	}
	text, err := ioutil.ReadFile(path)
	if err != nil {
		Fatalf("Failed to read password file: %v", err)
	}
	lines := strings.Split(string(text), "\n")
	// Sanitise DOS line endings.
	for i := range lines {
		lines[i] = strings.TrimRight(lines[i], "\r")
	}
	return lines
}

func SetP2PConfig(ctx *cli.Context, cfg *p2p.Config) {
	setNodeKey(ctx, cfg)
	setNAT(ctx, cfg)
	setListenAddress(ctx, cfg)
	setBootstrapNodes(ctx, cfg)
	setBootstrapNodesV5(ctx, cfg)

	if ctx.GlobalIsSet(MaxPeersFlag.Name) {
		cfg.MaxPeers = ctx.GlobalInt(MaxPeersFlag.Name)
	}

	log.Info("Maximum peer count", "AQUA", cfg.MaxPeers)

	if ctx.GlobalIsSet(MaxPendingPeersFlag.Name) {
		cfg.MaxPendingPeers = ctx.GlobalInt(MaxPendingPeersFlag.Name)
	}

	if ctx.GlobalIsSet(OfflineFlag.Name) {
		cfg.NoDiscovery = true
	}

	if ctx.GlobalIsSet(NoDiscoverFlag.Name) {
		cfg.NoDiscovery = true
	}
	if ctx.GlobalBool(Testnet2Flag.Name) {
		cfg.NoDiscovery = true
	}
	if ctx.GlobalIsSet(DiscoveryV5Flag.Name) {
		cfg.DiscoveryV5 = ctx.GlobalBool(DiscoveryV5Flag.Name)
	}

	if netrestrict := ctx.GlobalString(NetrestrictFlag.Name); netrestrict != "" {
		list, err := netutil.ParseNetlist(netrestrict)
		if err != nil {
			Fatalf("Option %q: %v", NetrestrictFlag.Name, err)
		}
		cfg.NetRestrict = list
	}

	if ctx.GlobalBool(DeveloperFlag.Name) {
		// --dev mode can't use p2p networking.
		cfg.MaxPeers = 0
		cfg.ListenAddr = ":0"
		cfg.NoDiscovery = true
		cfg.DiscoveryV5 = false
	}

	if ctx.GlobalBool(TestnetFlag.Name) && !ctx.GlobalIsSet(ListenPortFlag.Name) {
		cfg.ListenAddr = ":21304"
	}

}

// SetNodeConfig applies node-related command line flags to the config.
func SetNodeConfig(ctx *cli.Context, cfg *node.Config) {
	SetP2PConfig(ctx, &cfg.P2P)
	setIPC(ctx, cfg)
	setHTTP(ctx, cfg)
	setWS(ctx, cfg)
	setNodeUserIdent(ctx, cfg)

	switch {
	case ctx.GlobalIsSet(DataDirFlag.Name):
		cfg.DataDir = ctx.GlobalString(DataDirFlag.Name)
	case ctx.GlobalBool(DeveloperFlag.Name):
		cfg.DataDir = "" // unless explicitly requested, use memory databases
	case ctx.GlobalBool(TestnetFlag.Name):
		cfg.DataDir = filepath.Join(node.DefaultDataDir(), "testnet")
	case ctx.GlobalBool(Testnet2Flag.Name):
		cfg.DataDir = filepath.Join(node.DefaultDataDir(), "testnet2")
	}

	if ctx.GlobalIsSet(KeyStoreDirFlag.Name) {
		cfg.KeyStoreDir = ctx.GlobalString(KeyStoreDirFlag.Name)
	}
	if ctx.GlobalIsSet(UseUSBFlag.Name) {
		cfg.UseUSB = ctx.GlobalBool(UseUSBFlag.Name)
	}
}

func setGPO(ctx *cli.Context, cfg *gasprice.Config) {
	if ctx.GlobalIsSet(GpoBlocksFlag.Name) {
		cfg.Blocks = ctx.GlobalInt(GpoBlocksFlag.Name)
	}
	if ctx.GlobalIsSet(GpoPercentileFlag.Name) {
		cfg.Percentile = ctx.GlobalInt(GpoPercentileFlag.Name)
	}
}

func setTxPool(ctx *cli.Context, cfg *core.TxPoolConfig) {
	if ctx.GlobalIsSet(TxPoolNoLocalsFlag.Name) {
		cfg.NoLocals = ctx.GlobalBool(TxPoolNoLocalsFlag.Name)
	}
	if ctx.GlobalIsSet(TxPoolJournalFlag.Name) {
		cfg.Journal = ctx.GlobalString(TxPoolJournalFlag.Name)
	}
	if ctx.GlobalIsSet(TxPoolRejournalFlag.Name) {
		cfg.Rejournal = ctx.GlobalDuration(TxPoolRejournalFlag.Name)
	}
	if ctx.GlobalIsSet(TxPoolPriceLimitFlag.Name) {
		cfg.PriceLimit = ctx.GlobalUint64(TxPoolPriceLimitFlag.Name)
	}
	if ctx.GlobalIsSet(TxPoolPriceBumpFlag.Name) {
		cfg.PriceBump = ctx.GlobalUint64(TxPoolPriceBumpFlag.Name)
	}
	if ctx.GlobalIsSet(TxPoolAccountSlotsFlag.Name) {
		cfg.AccountSlots = ctx.GlobalUint64(TxPoolAccountSlotsFlag.Name)
	}
	if ctx.GlobalIsSet(TxPoolGlobalSlotsFlag.Name) {
		cfg.GlobalSlots = ctx.GlobalUint64(TxPoolGlobalSlotsFlag.Name)
	}
	if ctx.GlobalIsSet(TxPoolAccountQueueFlag.Name) {
		cfg.AccountQueue = ctx.GlobalUint64(TxPoolAccountQueueFlag.Name)
	}
	if ctx.GlobalIsSet(TxPoolGlobalQueueFlag.Name) {
		cfg.GlobalQueue = ctx.GlobalUint64(TxPoolGlobalQueueFlag.Name)
	}
	if ctx.GlobalIsSet(TxPoolLifetimeFlag.Name) {
		cfg.Lifetime = ctx.GlobalDuration(TxPoolLifetimeFlag.Name)
	}
}

func setAquahash(ctx *cli.Context, cfg *aqua.Config) {
	if ctx.GlobalIsSet(AquahashCacheDirFlag.Name) {
		cfg.Aquahash.CacheDir = ctx.GlobalString(AquahashCacheDirFlag.Name)
	}
	if ctx.GlobalIsSet(AquahashDatasetDirFlag.Name) {
		cfg.Aquahash.DatasetDir = ctx.GlobalString(AquahashDatasetDirFlag.Name)
	}
	if ctx.GlobalIsSet(AquahashCachesInMemoryFlag.Name) {
		cfg.Aquahash.CachesInMem = ctx.GlobalInt(AquahashCachesInMemoryFlag.Name)
	}
	if ctx.GlobalIsSet(AquahashCachesOnDiskFlag.Name) {
		cfg.Aquahash.CachesOnDisk = ctx.GlobalInt(AquahashCachesOnDiskFlag.Name)
	}
	if ctx.GlobalIsSet(AquahashDatasetsInMemoryFlag.Name) {
		cfg.Aquahash.DatasetsInMem = ctx.GlobalInt(AquahashDatasetsInMemoryFlag.Name)
	}
	if ctx.GlobalIsSet(AquahashDatasetsOnDiskFlag.Name) {
		cfg.Aquahash.DatasetsOnDisk = ctx.GlobalInt(AquahashDatasetsOnDiskFlag.Name)
	}
}

// checkExclusive verifies that only a single isntance of the provided flags was
// set by the user. Each flag might optionally be followed by a string type to
// specialize it further.
func checkExclusive(ctx *cli.Context, args ...interface{}) {
	set := make([]string, 0, 1)
	for i := 0; i < len(args); i++ {
		// Make sure the next argument is a flag and skip if not set
		flag, ok := args[i].(cli.Flag)
		if !ok {
			panic(fmt.Sprintf("invalid argument, not cli.Flag type: %T", args[i]))
		}
		// Check if next arg extends current and expand its name if so
		name := flag.GetName()

		if i+1 < len(args) {
			switch option := args[i+1].(type) {
			case string:
				// Extended flag, expand the name and shift the arguments
				if ctx.GlobalString(flag.GetName()) == option {
					name += "=" + option
				}
				i++

			case cli.Flag:
			default:
				panic(fmt.Sprintf("invalid argument, not cli.Flag or string extension: %T", args[i+1]))
			}
		}
		// Mark the flag if it's set
		if ctx.GlobalIsSet(flag.GetName()) {
			set = append(set, "--"+name)
		}
	}
	if len(set) > 1 {
		Fatalf("Flags %v can't be used at the same time", strings.Join(set, ", "))
	}
}

// SetShhConfig applies shh-related command line flags to the config.
func SetShhConfig(ctx *cli.Context, stack *node.Node, cfg *whisper.Config) {
	if ctx.GlobalIsSet(WhisperMaxMessageSizeFlag.Name) {
		cfg.MaxMessageSize = uint32(ctx.GlobalUint(WhisperMaxMessageSizeFlag.Name))
	}
	if ctx.GlobalIsSet(WhisperMinPOWFlag.Name) {
		cfg.MinimumAcceptedPOW = ctx.GlobalFloat64(WhisperMinPOWFlag.Name)
	}
}

// SetAquaConfig applies aqua-related command line flags to the config.
func SetAquaConfig(ctx *cli.Context, stack *node.Node, cfg *aqua.Config) {
	// Avoid conflicting network flags
	checkExclusive(ctx, DeveloperFlag, TestnetFlag, Testnet2Flag)
	checkExclusive(ctx, FastSyncFlag, SyncModeFlag)
	// checkExclusive(ctx, LightServFlag, LightModeFlag)
	// checkExclusive(ctx, LightServFlag, SyncModeFlag, "light")

	ks := stack.AccountManager().Backends(keystore.KeyStoreType)[0].(*keystore.KeyStore)
	setAquabase(ctx, ks, cfg)
	setGPO(ctx, &cfg.GPO)
	setTxPool(ctx, &cfg.TxPool)
	setAquahash(ctx, cfg)

	switch {
	case ctx.GlobalIsSet(SyncModeFlag.Name):
		cfg.SyncMode = *GlobalTextMarshaler(ctx, SyncModeFlag.Name).(*downloader.SyncMode)
	case ctx.GlobalBool(FastSyncFlag.Name):
		cfg.SyncMode = downloader.FastSync
	}

	if ctx.GlobalIsSet(NetworkIdFlag.Name) {
		cfg.NetworkId = ctx.GlobalUint64(NetworkIdFlag.Name)
	}

	if ctx.GlobalIsSet(CacheFlag.Name) || ctx.GlobalIsSet(CacheDatabaseFlag.Name) {
		cfg.DatabaseCache = ctx.GlobalInt(CacheFlag.Name) * ctx.GlobalInt(CacheDatabaseFlag.Name) / 100
	}
	cfg.DatabaseHandles = makeDatabaseHandles()

	if gcmode := ctx.GlobalString(GCModeFlag.Name); gcmode != "full" && gcmode != "archive" {
		Fatalf("--%s must be either 'full' or 'archive'", GCModeFlag.Name)
	}
	cfg.NoPruning = ctx.GlobalString(GCModeFlag.Name) == "archive"

	if ctx.GlobalIsSet(CacheFlag.Name) || ctx.GlobalIsSet(CacheGCFlag.Name) {
		cfg.TrieCache = ctx.GlobalInt(CacheFlag.Name) * ctx.GlobalInt(CacheGCFlag.Name) / 100
	}
	if ctx.GlobalIsSet(MinerThreadsFlag.Name) {
		cfg.MinerThreads = ctx.GlobalInt(MinerThreadsFlag.Name)
	}
	if ctx.GlobalIsSet(DocRootFlag.Name) {
		cfg.DocRoot = ctx.GlobalString(DocRootFlag.Name)
	}
	if ctx.GlobalIsSet(ExtraDataFlag.Name) {
		cfg.ExtraData = []byte(ctx.GlobalString(ExtraDataFlag.Name))
	}
	if ctx.GlobalIsSet(GasPriceFlag.Name) {
		cfg.GasPrice = GlobalBig(ctx, GasPriceFlag.Name)
	}
	if ctx.GlobalIsSet(VMEnableDebugFlag.Name) {
		// TODO(fjl): force-enable this in --dev mode
		cfg.EnablePreimageRecording = ctx.GlobalBool(VMEnableDebugFlag.Name)
	}

	// Override any default configs for hard coded networks.
	switch {
	case ctx.GlobalBool(TestnetFlag.Name):
		if !ctx.GlobalIsSet(NetworkIdFlag.Name) {
			cfg.NetworkId = params.TestnetChainConfig.ChainId.Uint64()
		}
		cfg.Genesis = core.DefaultTestnetGenesisBlock()
	case ctx.GlobalBool(Testnet2Flag.Name):
		if !ctx.GlobalIsSet(NetworkIdFlag.Name) {
			cfg.NetworkId = params.Testnet2ChainConfig.ChainId.Uint64()
		}
		cfg.Genesis = core.DefaultTestnet2GenesisBlock()
	case ctx.GlobalBool(DeveloperFlag.Name):
		// Create new developer account or reuse existing one
		var (
			developer accounts.Account
			err       error
		)
		if accs := ks.Accounts(); len(accs) > 0 {
			developer = ks.Accounts()[0]
		} else {
			developer, err = ks.NewAccount("")
			if err != nil {
				Fatalf("Failed to create developer account: %v", err)
			}
		}
		if err := ks.Unlock(developer, ""); err != nil {
			Fatalf("Failed to unlock developer account: %v", err)
		}
		log.Info("Using developer account", "address", developer.Address)

		cfg.Genesis = core.DeveloperGenesisBlock(uint64(ctx.GlobalInt(DeveloperPeriodFlag.Name)), developer.Address)
		if !ctx.GlobalIsSet(GasPriceFlag.Name) {
			cfg.GasPrice = big.NewInt(1)
		}
	}
	// TODO(fjl): move trie cache generations into config
	if gen := ctx.GlobalInt(TrieCacheGenFlag.Name); gen > 0 {
		state.MaxTrieCacheGen = uint16(gen)
	}
}

// RegisterAquaService adds an AquaChain client to the stack.
func RegisterAquaService(stack *node.Node, cfg *aqua.Config) {
	err := stack.Register(func(ctx *node.ServiceContext) (node.Service, error) {
		return aqua.New(ctx, cfg)
	})
	if err != nil {
		Fatalf("Failed to register the AquaChain service: %v", err)
	}
}

// RegisterShhService configures Whisper and adds it to the given node.
func RegisterShhService(stack *node.Node, cfg *whisper.Config) {
	if err := stack.Register(func(n *node.ServiceContext) (node.Service, error) {
		return whisper.New(cfg), nil
	}); err != nil {
		Fatalf("Failed to register the Whisper service: %v", err)
	}
}

// RegisterAquaStatsService configures the AquaChain Stats daemon and adds it to
// th egiven node.
func RegisterAquaStatsService(stack *node.Node, url string) {
	if err := stack.Register(func(ctx *node.ServiceContext) (node.Service, error) {
		// Retrieve both aqua and les services
		var ethServ *aqua.AquaChain
		ctx.Service(&ethServ)

		return aquastats.New(url, ethServ)
	}); err != nil {
		Fatalf("Failed to register the AquaChain Stats service: %v", err)
	}
}

// SetupNetwork configures the system for either the main net or some test network.
func SetupNetwork(ctx *cli.Context) {
	// TODO(fjl): move target gas limit into config
	params.TargetGasLimit = ctx.GlobalUint64(TargetGasLimitFlag.Name)
}

// MakeChainDatabase open an LevelDB using the flags passed to the client and will hard crash if it fails.
func MakeChainDatabase(ctx *cli.Context, stack *node.Node) aquadb.Database {
	var (
		cache   = ctx.GlobalInt(CacheFlag.Name) * ctx.GlobalInt(CacheDatabaseFlag.Name) / 100
		handles = makeDatabaseHandles()
	)
	name := "chaindata"
	chainDb, err := stack.OpenDatabase(name, cache, handles)
	if err != nil {
		Fatalf("Could not open database: %v", err)
	}
	return chainDb
}

func MakeGenesis(ctx *cli.Context) *core.Genesis {
	var genesis *core.Genesis
	switch {
	case ctx.GlobalBool(TestnetFlag.Name):
		genesis = core.DefaultTestnetGenesisBlock()
	case ctx.GlobalBool(Testnet2Flag.Name):
		genesis = core.DefaultTestnet2GenesisBlock()
	case ctx.GlobalBool(DeveloperFlag.Name):
		Fatalf("Developer chains are ephemeral")
	}
	return genesis
}

// MakeChain creates a chain manager from set command line flags.
func MakeChain(ctx *cli.Context, stack *node.Node) (chain *core.BlockChain, chainDb aquadb.Database) {
	var err error
	chainDb = MakeChainDatabase(ctx, stack)

	config, _, err := core.SetupGenesisBlock(chainDb, MakeGenesis(ctx))
	if err != nil {
		Fatalf("%v", err)
	}

	var engine consensus.Engine = aquahash.NewFaker()

	if !ctx.GlobalBool(FakePoWFlag.Name) {
		engine = aquahash.New(aquahash.Config{
			CacheDir:       stack.ResolvePath(aqua.DefaultConfig.Aquahash.CacheDir),
			CachesInMem:    aqua.DefaultConfig.Aquahash.CachesInMem,
			CachesOnDisk:   aqua.DefaultConfig.Aquahash.CachesOnDisk,
			DatasetDir:     stack.ResolvePath(aqua.DefaultConfig.Aquahash.DatasetDir),
			DatasetsInMem:  aqua.DefaultConfig.Aquahash.DatasetsInMem,
			DatasetsOnDisk: aqua.DefaultConfig.Aquahash.DatasetsOnDisk,
		})
	}

	if gcmode := ctx.GlobalString(GCModeFlag.Name); gcmode != "full" && gcmode != "archive" {
		Fatalf("--%s must be either 'full' or 'archive'", GCModeFlag.Name)
	}
	cache := &core.CacheConfig{
		Disabled:      ctx.GlobalString(GCModeFlag.Name) == "archive",
		TrieNodeLimit: aqua.DefaultConfig.TrieCache,
		TrieTimeLimit: aqua.DefaultConfig.TrieTimeout,
	}
	if ctx.GlobalIsSet(CacheFlag.Name) || ctx.GlobalIsSet(CacheGCFlag.Name) {
		cache.TrieNodeLimit = ctx.GlobalInt(CacheFlag.Name) * ctx.GlobalInt(CacheGCFlag.Name) / 100
	}
	vmcfg := vm.Config{EnablePreimageRecording: ctx.GlobalBool(VMEnableDebugFlag.Name)}
	chain, err = core.NewBlockChain(chainDb, cache, config, engine, vmcfg)
	if err != nil {
		Fatalf("Can't create BlockChain: %v", err)
	}
	return chain, chainDb
}

// MakeConsolePreloads retrieves the absolute paths for the console JavaScript
// scripts to preload before starting.
func MakeConsolePreloads(ctx *cli.Context) []string {
	// Skip preloading if there's nothing to preload
	if ctx.GlobalString(PreloadJSFlag.Name) == "" {
		return nil
	}
	// Otherwise resolve absolute paths and return them
	preloads := []string{}

	assets := ctx.GlobalString(JSpathFlag.Name)
	for _, file := range strings.Split(ctx.GlobalString(PreloadJSFlag.Name), ",") {
		preloads = append(preloads, common.AbsolutePath(assets, strings.TrimSpace(file)))
	}
	return preloads
}

// MigrateFlags sets the global flag from a local flag when it's set.
// This is a temporary function used for migrating old command/flags to the
// new format.
//
// e.g. aquachain account new --keystore /tmp/mykeystore
//
// is equivalent after calling this method with:
//
// aquachain --keystore /tmp/mykeystore account new
//
// This allows the use of the existing configuration functionality.
// When all flags are migrated this function can be removed and the existing
// configuration functionality must be changed that is uses local flags
func MigrateFlags(action func(ctx *cli.Context) error) func(*cli.Context) error {
	return func(ctx *cli.Context) error {
		for _, name := range ctx.FlagNames() {
			if ctx.IsSet(name) {
				ctx.GlobalSet(name, ctx.String(name))
			}
		}
		return action(ctx)
	}
}