geo

README

geo

CoreDNS GeoDNS Plugin

Documentation

Overview

https://gist.github.com/cdipaolo/d3f8db3848278b49db68

Index

• func Distance(lat1, lon1, lat2, lon2 float64) float64
• type Geo
  • func (g Geo) Name() string
  • func (g Geo) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg) (int, error)
• type GeoFile
• type GeoType

Functions

func Distance

func Distance(lat1, lon1, lat2, lon2 float64) float64

Distance function returns the distance (in meters) between two points of

a given longitude and latitude relatively accurately (using a spherical
approximation of the Earth) through the Haversin Distance Formula for
great arc distance on a sphere with accuracy for small distances

point coordinates are supplied in degrees and converted into rad. in the func

distance returned is METERS!!!!!! http://en.wikipedia.org/wiki/Haversine_formula

Types

type Geo

type Geo struct {
	Next plugin.Handler
	Fall fall.F

	IP2Location  *ip2location.DB
	Zone         map[string][]GeoType
	ZoneFilename string
}

func (Geo) Name

func (g Geo) Name() string

Name implements the Handler interface.

func (Geo) ServeDNS

func (g Geo) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg) (int, error)

ServeDNS implements the plugin.Handler interface.

type GeoFile

type GeoFile struct {
	Zone  string  `yaml:"zone"`
	TTL   uint32  `yaml:"ttl"`
	Type  string  `yaml:"type"`
	Value string  `yaml:"value"`
	Lat   float64 `yaml:"lat"`
	Lon   float64 `yaml:"lon"`
}

type GeoType

type GeoType struct {
	Type  uint16  `yaml:"type"`
	TTL   uint32  `yaml:"ttl"`
	Value string  `yaml:"value"`
	Lat   float64 `yaml:"lat"`
	Lon   float64 `yaml:"lon"`
}