config.go

package fileserver

import (
	"github.com/roadrunner-server/errors"
)

type Config struct {
	// Address to serve
	Address string `mapstructure:"address"`
	// CalculateEtag can be true/false and used to calculate etag for the static
	CalculateEtag bool `mapstructure:"calculate_etag"`
	// Weak etag `W/`
	Weak bool `mapstructure:"weak"`
	// per-root configuration
	Configuration []*Cfg `mapstructure:"serve"`
	// StreamRequestBody ...
	StreamRequestBody bool `mapstructure:"stream_request_body"`
}

type Cfg struct {
	// Prefix HTTP
	Prefix string `mapstructure:"prefix"`

	// Dir contains name of directory to control access to.
	// Default - "."
	Root string `mapstructure:"root"`

	BytesRange    bool `mapstructure:"bytes_range"`
	Compress      bool `mapstructure:"compress"`
	CacheDuration int  `mapstructure:"cache_duration"`
	MaxAge        int  `mapstructure:"max_age"`
}

func (c *Config) Valid() error {
	const op = errors.Op("static_validation")
	if c.Address == "" {
		return errors.E(op, errors.Str("empty address"))
	}

	if c.Configuration == nil {
		return errors.E(op, errors.Str("no configuration to serve"))
	}

	for i := 0; i < len(c.Configuration); i++ {
		if c.Configuration[i].Prefix == "" {
			return errors.E(op, errors.Str("empty prefix"))
		}

		if c.Configuration[i].Prefix[0] != '/' {
			return errors.E(op, errors.Str("prefix must begin with a forward slash"))
		}

		if c.Configuration[i].Root == "" {
			c.Configuration[i].Root = "."
		}

		if c.Configuration[i].CacheDuration == 0 {
			c.Configuration[i].CacheDuration = 10
		}
	}

	return nil
}