Golang Context.GlobalString方法代码示例

func GetChain(ctx *cli.Context) (*core.ChainManager, common.Database, common.Database) {
	dataDir := ctx.GlobalString(DataDirFlag.Name)

	blockDb, err := ethdb.NewLDBDatabase(path.Join(dataDir, "blockchain"))
	if err != nil {
		Fatalf("Could not open database: %v", err)
	}

	stateDb, err := ethdb.NewLDBDatabase(path.Join(dataDir, "state"))
	if err != nil {
		Fatalf("Could not open database: %v", err)
	}

	extraDb, err := ethdb.NewLDBDatabase(path.Join(dataDir, "extra"))
	if err != nil {
		Fatalf("Could not open database: %v", err)
	}

	eventMux := new(event.TypeMux)
	chainManager := core.NewChainManager(blockDb, stateDb, eventMux)
	pow := ethash.New()
	txPool := core.NewTxPool(eventMux, chainManager.State, chainManager.GasLimit)
	blockProcessor := core.NewBlockProcessor(stateDb, extraDb, pow, txPool, chainManager, eventMux)
	chainManager.SetProcessor(blockProcessor)

	return chainManager, blockDb, stateDb
}

func cmdInit(c *cli.Context) error {
	username := c.Args().First()
	if username == "" {
		cli.ShowCommandHelp(c, "init")
		return cli.NewExitError("", 0)
	}

	password := c.Args().Get(1)
	if password == "" {
		pwd, err := askPass()
		if err != nil {
			if err != gopass.ErrInterrupted {
				return cli.NewExitError(err.Error(), 2)
			}
			return cli.NewExitError("", 2)
		}
		password = pwd
	}

	s, err := NewStore(c.GlobalString("store"), c.GlobalString("do-upgrades"),
		c.GlobalString("policy-type"), c.GlobalString("policy-condition"), c.GlobalString("hooks-dir"))
	if err != nil {
		return cli.NewExitError(fmt.Sprintf("Error initializing whawty store: %s", err), 3)
	}
	if err := s.GetInterface().Init(username, password); err != nil {
		return cli.NewExitError(fmt.Sprintf("Error initializing whawty store: %s", err), 3)
	}
	return cli.NewExitError(fmt.Sprintf("whawty store successfully initialized!"), 0)
}

// MakeChain creates a chain manager from set command line flags.
func MakeChain(ctx *cli.Context) (chain *core.ChainManager, chainDb common.Database) {
	datadir := ctx.GlobalString(DataDirFlag.Name)
	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) {
		InitOlympic()
		_, err := core.WriteTestNetGenesisBlock(chainDb, 42)
		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.NewChainManager(chainDb, nil, pow, eventMux)
	if err != nil {
		Fatalf("Could not start chainmanager: %v", err)
	}

	proc := core.NewBlockProcessor(chainDb, pow, chain, eventMux)
	chain.SetProcessor(proc)
	return chain, chainDb
}

func createImageCommandFunc(c *cli.Context) {
	var image string
	if len(c.Args()) == 0 {
		log.Fatal("You need to specify a image")
	} else {
		image = c.Args()[0]
	}

	clnt := client.New(c.GlobalString("server"))
	if c.GlobalBool("debug") {
		clnt.SetDebug()
	}

	s := client.Image{
		Image:     image,
		Type:      prompt.String("Type", prompt.Prompt{Default: "docker", FuncPtr: prompt.Enum, FuncInp: "file,docker"}),
		BootTagID: *chooseTag(clnt, ""),
	}

	// Is this correct?
	fmt.Println(string(s.JSON()))
	if !prompt.Bool("Is this correct", true) {
		os.Exit(1)
	}

	// Create image
	clnt.Image.Create(&s)
}

func makedag(ctx *cli.Context) {
	utils.CheckLegalese(ctx.GlobalString(utils.DataDirFlag.Name))

	args := ctx.Args()
	wrongArgs := func() {
		utils.Fatalf(`Usage: geth makedag <block number> <outputdir>`)
	}
	switch {
	case len(args) == 2:
		blockNum, err := strconv.ParseUint(args[0], 0, 64)
		dir := args[1]
		if err != nil {
			wrongArgs()
		} else {
			dir = filepath.Clean(dir)
			// seems to require a trailing slash
			if !strings.HasSuffix(dir, "/") {
				dir = dir + "/"
			}
			_, err = ioutil.ReadDir(dir)
			if err != nil {
				utils.Fatalf("Can't find dir")
			}
			fmt.Println("making DAG, this could take awhile...")
			ethash.MakeDAG(blockNum, dir)
		}
	default:
		wrongArgs()
	}
}

func blockRecovery(ctx *cli.Context) {
	utils.CheckLegalese(ctx.GlobalString(utils.DataDirFlag.Name))

	arg := ctx.Args().First()
	if len(ctx.Args()) < 1 && len(arg) > 0 {
		glog.Fatal("recover requires block number or hash")
	}

	cfg := utils.MakeEthConfig(ClientIdentifier, nodeNameVersion, ctx)
	utils.CheckLegalese(cfg.DataDir)

	blockDb, err := ethdb.NewLDBDatabase(filepath.Join(cfg.DataDir, "blockchain"), cfg.DatabaseCache)
	if err != nil {
		glog.Fatalln("could not open db:", err)
	}

	var block *types.Block
	if arg[0] == '#' {
		block = core.GetBlockByNumber(blockDb, common.String2Big(arg[1:]).Uint64())
	} else {
		block = core.GetBlockByHash(blockDb, common.HexToHash(arg))
	}

	if block == nil {
		glog.Fatalln("block not found. Recovery failed")
	}

	err = core.WriteHead(blockDb, block)
	if err != nil {
		glog.Fatalln("block write err", err)
	}
	glog.Infof("Recovery succesful. New HEAD %x\n", block.Hash())
}

func attach(ctx *cli.Context) {
	utils.CheckLegalese(ctx.GlobalString(utils.DataDirFlag.Name))

	var client comms.EthereumClient
	var err error
	if ctx.Args().Present() {
		client, err = comms.ClientFromEndpoint(ctx.Args().First(), codec.JSON)
	} else {
		cfg := comms.IpcConfig{
			Endpoint: ctx.GlobalString(utils.IPCPathFlag.Name),
		}
		client, err = comms.NewIpcClient(cfg, codec.JSON)
	}

	if err != nil {
		utils.Fatalf("Unable to attach to geth node - %v", err)
	}

	repl := newLightweightJSRE(
		ctx.GlobalString(utils.JSpathFlag.Name),
		client,
		true,
	)

	if ctx.GlobalString(utils.ExecFlag.Name) != "" {
		repl.batch(ctx.GlobalString(utils.ExecFlag.Name))
	} else {
		repl.welcome()
		repl.interactive()
	}
}

func push(c *cli.Context) {
	wd := ensureHome(c)
	pkg := a1(c, "No package name given")
	ver := a2(c, "Version is required")
	h := NewClient(c.GlobalString("host"))

	// Grab the latest version of the package from the server
	p, err := h.Get(pkg)
	if err != nil {
		die(err)
	}

	// Build a release
	r := &model.Release{
		Version:   ver,
		Author:    p.Author,
		Date:      time.Now(),
		PackageId: p.ID,
		Manifests: makeManifests(path.Join(wd, pkg)),
	}

	// Add it
	p.Releases = append([]*model.Release{r}, p.Releases...)

	info("Pushing %s %s to K8sPlace", pkg, ver)
	//d, _ := json.Marshal(p)
	//fmt.Println(string(d))
	if err := h.Update(p); err != nil {
		die(err)
	}
	ftw("Updated %s", p.Name)
}

// RecordGenerator abstracts from the way the strings are specified, e.g. via
// stdin a file or directly on the command line
func RecordGenerator(c *cli.Context) chan *Record {
	columnSpec, err := ParseColumnSpec(c.GlobalString("f"))
	if err != nil {
		log.Fatal(err)
	}
	// stdin
	if len(c.Args()) == 0 || (len(c.Args()) == 1 && c.Args()[0] == "-") {
		return RecordGeneratorFileDelimiter(os.Stdin, columnSpec, c.GlobalString("delimiter"))
	}
	// from filename
	if len(c.Args()) == 1 {
		filename := c.Args()[0]
		if _, err := os.Stat(filename); err == nil {
			file, err := os.Open(filename)
			if err != nil {
				log.Fatal(err)
			}
			return RecordGeneratorFile(file, columnSpec)
		}
		log.Fatalf("no such file: %s\n", filename)

	}
	// direct
	if len(c.Args()) == 2 {
		records := make(chan *Record)
		go func() {
			records <- &Record{Fields: c.Args(), left: 0, right: 1}
			close(records)
		}()
		return records
	}
	return nil
}

func (this *App) setup(c *cli.Context) error {
	if this.client == nil {
		this.client = api.NewClient(c.GlobalString("server"))
	}

	if this.user == nil {
		// try load user from config
		if this.config != nil && this.config.CurrentUser != "" {
			this.user, _ = this.store.FindUserByKey(this.config.CurrentUser)
		}

		// still not found
		if this.user == nil {
			this.user = this.selectCurrentUser()
		}
	}

	if this.user == nil {
		return ErrNoUser
	}

	if err := this.client.Register(this.user); err != nil {
		return err
	}

	// save config
	if this.config == nil {
		this.config = &AppConfig{
			CurrentUser: this.user.Key,
		}
		this.saveConfig(this.config)
	}

	return nil
}

// getConfigFilename gets the absolute filename of the config file specified by
// the ConfigFilename flag, and whether it exists.
//
// If the ConfigFilename exists, then it is returned as an absolute path.
// If neither of those exist, the absolute ConfigFilename is returned.
func getConfigFilename(context *cli.Context) (string, bool) {
	cf := context.GlobalString("config-filename")

	if filepath.IsAbs(cf) {
		// Absolute path specified; user knows what they want.
		_, err := os.Stat(cf)
		return cf, err == nil
	}

	absCF, err := filepath.Abs(cf)
	if err != nil {
		// syscall failure; treat as if file doesn't exist.
		return cf, false
	}
	if _, err := os.Stat(absCF); err == nil {
		// File exists on relative path.
		return absCF, true
	}

	// Check for config file on path relative to executable.
	exeFile := os.Args[0]
	exeDir := filepath.Dir(exeFile)
	absCF = filepath.Join(exeDir, cf)
	if _, err := os.Stat(absCF); err == nil {
		return absCF, true
	}

	// This is probably what the user expects if it wasn't found anywhere else.
	return absCF, false
}

// getConfigFilename gets the absolute filename of the config file specified by
// the ConfigFilename flag, and whether it exists.
//
// If the (relative or absolute) ConfigFilename exists, then it is returned.
// If the ConfigFilename exists in a valid XDG path, then it is returned.
// If neither of those exist, the (relative or absolute) ConfigFilename is returned.
func getConfigFilename(context *cli.Context) (string, bool) {
	cf := context.GlobalString("config-filename")

	if filepath.IsAbs(cf) {
		// Absolute path specified; user knows what they want.
		_, err := os.Stat(cf)
		return cf, err == nil
	}

	absCF, err := filepath.Abs(cf)
	if err != nil {
		// syscall failure; treat as if file doesn't exist.
		return cf, false
	}
	if _, err := os.Stat(absCF); err == nil {
		// File exists on relative path.
		return absCF, true
	}

	if xdgCF, err := xdg.Config.Find(cf); err == nil {
		// File exists in an XDG directory.
		return xdgCF, true
	}

	// Default to relative path. This is probably what the user expects if
	// it wasn't found anywhere else.
	return absCF, false
}

func installAction(ctx *cli.Context) {
	server := ctx.GlobalString("server")
	ref := ctx.String("ref")
	if len(ctx.Args()) == 0 {
		log.Fatal("Need args")
	}
	repo := ctx.Args().Get(0)
	log.Println(repo)

	u := url.URL{
		Scheme: "http",
		Host:   server,
	}

	// guess repo
	if !strings.Contains(repo, "/") {
		luckyURL := u
		luckyURL.Path = "/lucky/" + repo
		var err error
		repo, err = httpGetString(luckyURL.String())
		if err != nil {
			log.Fatal(err)
		}
		if repo == "" {
			log.Fatal("Guess repo failed, require fullname <owner/reponame>")
		}
	}
	log.Println("use repo:", repo)
	binURL := u
	binURL.Path = fmt.Sprintf("%s/%s/%s/%s", repo, ref, runtime.GOOS, runtime.GOARCH)
	getBinary(binURL, figureBinName(repo))
}

// Fetch returns exercism problems.
func Fetch(ctx *cli.Context) {
	c, err := config.New(ctx.GlobalString("config"))
	if err != nil {
		log.Fatal(err)
	}
	client := api.NewClient(c)

	problems, err := client.Fetch(ctx.Args())
	if err != nil {
		log.Fatal(err)
	}

	submissionInfo, err := client.Submissions()
	if err != nil {
		log.Fatal(err)
	}

	if err := setSubmissionState(problems, submissionInfo); err != nil {
		log.Fatal(err)
	}

	hw := user.NewHomework(problems, c)
	if err := hw.Save(); err != nil {
		log.Fatal(err)
	}

	hw.Summarize(user.HWAll)
}

func statusCmd(c *cli.Context) {
	migrationsPath := c.GlobalString("migrations")
	targetPath := c.GlobalString("target")

	migrationsPath, err := migrations.AbsMigrationsPath(migrationsPath)
	if err != nil {
		fmt.Printf("Error determining the migrations path: %s\n", err.Error())
		os.Exit(1)
	}

	list, err := migrations.List(migrationsPath)
	if err != nil {
		fmt.Printf("Error listing the available migrations: %s\n", err.Error())
		os.Exit(1)
	}

	timestamp, err := migrations.CurrentTimestamp(targetPath)
	if err != nil {
		fmt.Printf("Error reading the current timestamp: %s\n", err.Error())
		os.Exit(1)
	}

	if last := migrations.Last(list, timestamp); last != nil {
		fmt.Printf("Last migration executed: %s\n", last.Name)
	} else {
		fmt.Printf("No migration executed yet!\n")
	}

	fmt.Printf("Pending migrations: %d\n", len(migrations.Pending(list, timestamp)))
}