Golang meta.NewConfig函數代碼示例

// parseFlags parses and validates the command line arguments.
func (cmd *Command) parseFlags(args []string) (*Config, string, error) {
	fs := flag.NewFlagSet("", flag.ContinueOnError)
	configPath := fs.String("config", "", "")
	fs.SetOutput(cmd.Stderr)
	fs.Usage = cmd.printUsage
	if err := fs.Parse(args); err != nil {
		return nil, "", err
	}

	// Parse configuration file from disk.
	if *configPath == "" {
		return nil, "", fmt.Errorf("config required")
	}

	// Parse config.
	config := Config{
		Meta: meta.NewConfig(),
		Data: tsdb.NewConfig(),
	}
	if _, err := toml.DecodeFile(*configPath, &config); err != nil {
		return nil, "", err
	}

	// Require output path.
	path := fs.Arg(0)
	if path == "" {
		return nil, "", fmt.Errorf("snapshot path required")
	}

	return &config, path, nil
}

// NewCommand returns a new instance of Command with default settings.
func NewCommand() *Command {
	return &Command{
		Stdout:     os.Stdout,
		Stderr:     os.Stderr,
		MetaConfig: meta.NewConfig(),
	}
}

// parseFlags parses and validates the command line arguments.
func (cmd *Command) parseFlags(args []string) error {
	fs := flag.NewFlagSet("", flag.ContinueOnError)
	fs.StringVar(&cmd.metadir, "metadir", "", "")
	fs.StringVar(&cmd.datadir, "datadir", "", "")
	fs.StringVar(&cmd.database, "database", "", "")
	fs.StringVar(&cmd.retention, "retention", "", "")
	fs.StringVar(&cmd.shard, "shard", "", "")
	fs.SetOutput(cmd.Stderr)
	fs.Usage = cmd.printUsage
	if err := fs.Parse(args); err != nil {
		return err
	}

	cmd.MetaConfig = meta.NewConfig()
	cmd.MetaConfig.Dir = cmd.metadir

	// Require output path.
	cmd.backupFilesPath = fs.Arg(0)
	if cmd.backupFilesPath == "" {
		return fmt.Errorf("path with backup files required")
	}

	// validate the arguments
	if cmd.metadir == "" && cmd.database == "" {
		return fmt.Errorf("either a metadir or database are required to restore")
	}

	if cmd.datadir == "" {
		return fmt.Errorf("datadir is required to restore")
	}

	if cmd.shard != "" {
		if cmd.database == "" {
			return fmt.Errorf("database is required to restore shard")
		}
		if cmd.retention == "" {
			return fmt.Errorf("retention is required to restore shard")
		}
	} else if cmd.retention != "" && cmd.database == "" {
		return fmt.Errorf("database is required to restore retention policy")
	}

	return nil
}

// NewConfig returns an instance of Config with reasonable defaults.
func NewConfig() *Config {
	c := &Config{}
	c.Meta = meta.NewConfig()
	c.Data = tsdb.NewConfig()
	c.Cluster = cluster.NewConfig()
	c.Precreator = precreator.NewConfig()

	c.Admin = admin.NewConfig()
	c.HTTPD = httpd.NewConfig()
	c.Collectd = collectd.NewConfig()
	c.OpenTSDB = opentsdb.NewConfig()

	c.Monitoring = monitor.NewConfig()
	c.ContinuousQuery = continuous_querier.NewConfig()
	c.Retention = retention.NewConfig()
	c.HintedHandoff = hh.NewConfig()

	return c
}

// NewConfig returns an instance of Config with reasonable defaults.
func NewConfig() *Config {
	c := &Config{}
	c.Meta = meta.NewConfig()
	c.Data = tsdb.NewConfig()
	c.Cluster = cluster.NewConfig()
	c.Registration = registration.NewConfig()
	c.Precreator = precreator.NewConfig()

	c.Admin = admin.NewConfig()
	c.Monitor = monitor.NewConfig()
	c.Subscriber = subscriber.NewConfig()
	c.HTTPD = httpd.NewConfig()
	c.Graphites = []graphite.Config{graphite.NewConfig()}
	c.Collectd = collectd.NewConfig()
	c.OpenTSDB = opentsdb.NewConfig()
	c.UDPs = []udp.Config{udp.NewConfig()}

	c.ContinuousQuery = continuous_querier.NewConfig()
	c.Retention = retention.NewConfig()
	c.HintedHandoff = hh.NewConfig()

	return c
}