GeoService in Go

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A geocoding service developed in Go's way, idiomatic and elegant, not just in golang.

This product is designed to open to any Geocoding service. Based on it,

Google Maps
MapQuest
- Nominatim Search
- Open Geocoding
OpenCage
HERE
Bing
Mapbox
OpenStreetMap
PickPoint
LocationIQ
ArcGIS
geocodio
Mapzen
TomTom
Yandex.Maps

clients are implemented in ~50 LoC each.

It allows you to switch from one service to another by changing only 1 line, or enjoy all the free quota (requests/sec, day, month...) from them at the same time. Just like this.

package main

import (
	"fmt"
	"os"

	"github.com/codingsince1985/geo-golang"
	"github.com/codingsince1985/geo-golang/arcgis"
	"github.com/codingsince1985/geo-golang/bing"
	"github.com/codingsince1985/geo-golang/chained"
	"github.com/codingsince1985/geo-golang/geocod"
	"github.com/codingsince1985/geo-golang/google"
	"github.com/codingsince1985/geo-golang/here"
	"github.com/codingsince1985/geo-golang/locationiq"
	"github.com/codingsince1985/geo-golang/mapbox"
	"github.com/codingsince1985/geo-golang/mapquest/nominatim"
	"github.com/codingsince1985/geo-golang/mapquest/open"
	"github.com/codingsince1985/geo-golang/mapzen"
	"github.com/codingsince1985/geo-golang/opencage"
	"github.com/codingsince1985/geo-golang/openstreetmap"
	"github.com/codingsince1985/geo-golang/pickpoint"
	"github.com/codingsince1985/geo-golang/tomtom"
	"github.com/codingsince1985/geo-golang/yandex"
)

const (
	addr     = "Melbourne VIC"
	lat, lng = -37.813611, 144.963056
	radius   = 50
	zoom     = 18
)

func main() {
	ExampleGeocoder()
}

// ExampleGeocoder demonstrates the different geocoding services
func ExampleGeocoder() {
	fmt.Println("Google Geocoding API")
	try(google.Geocoder(os.Getenv("GOOGLE_API_KEY")))

	fmt.Println("Mapquest Nominatim")
	try(nominatim.Geocoder(os.Getenv("MAPQUEST_NOMINATIM_KEY")))

	fmt.Println("Mapquest Open streetmaps")
	try(open.Geocoder(os.Getenv("MAPQUEST_OPEN_KEY")))

	fmt.Println("OpenCage Data")
	try(opencage.Geocoder(os.Getenv("OPENCAGE_API_KEY")))

	fmt.Println("HERE API")
	try(here.Geocoder(os.Getenv("HERE_APP_ID"), os.Getenv("HERE_APP_CODE"), radius))

	fmt.Println("Bing Geocoding API")
	try(bing.Geocoder(os.Getenv("BING_API_KEY")))

	fmt.Println("Mapbox API")
	try(mapbox.Geocoder(os.Getenv("MAPBOX_API_KEY")))

	fmt.Println("OpenStreetMap")
	try(openstreetmap.Geocoder())

	fmt.Println("PickPoint")
	try(pickpoint.Geocoder(os.Getenv("PICKPOINT_API_KEY")))

	fmt.Println("LocationIQ")
	try(locationiq.Geocoder(os.Getenv("LOCATIONIQ_API_KEY"), zoom))

	fmt.Println("ArcGIS")
	try(arcgis.Geocoder(os.Getenv("ARCGIS_TOKEN")))

	fmt.Println("geocod.io")
	try(geocod.Geocoder(os.Getenv("GEOCOD_API_KEY")))

	fmt.Println("Mapzen")
	try(mapzen.Geocoder(os.Getenv("MAPZEN_API_KEY")))

	fmt.Println("TomTom")
	try(tomtom.Geocoder(os.Getenv("TOMTOM_API_KEY")))

	fmt.Println("Yandex")
	try(yandex.Geocoder(os.Getenv("YANDEX_API_KEY")))

	// Chained geocoder will fallback to subsequent geocoders
	fmt.Println("ChainedAPI[OpenStreetmap -> Google]")
	try(chained.Geocoder(
		openstreetmap.Geocoder(),
		google.Geocoder(os.Getenv("GOOGLE_API_KEY")),
	))
}

func try(geocoder geo.Geocoder) {
	location, _ := geocoder.Geocode(addr)
	if location != nil {
		fmt.Printf("%s location is (%.6f, %.6f)\n", addr, location.Lat, location.Lng)
	} else {
		fmt.Println("got <nil> location")
	}
	address, _ := geocoder.ReverseGeocode(lat, lng)
	if address != nil {
		fmt.Printf("Address of (%.6f,%.6f) is %s\n", lat, lng, address.FormattedAddress)
		fmt.Printf("Detailed address: %#v\n", address)
	} else {
		fmt.Println("got <nil> address")
	}
	fmt.Print("\n")
}

Result

Google Geocoding API
Melbourne VIC location is (-37.813611, 144.963056)
Address of (-37.813611,144.963056) is 197 Elizabeth St, Melbourne VIC 3000, Australia
Detailed address: &geo.Address{FormattedAddress:"197 Elizabeth St, Melbourne VIC 3000, Australia", Street:"Elizabeth Street", HouseNumber:"197", Suburb:"", Postcode:"3000", State:"Victoria", StateDistrict:"Melbourne City", County:"", Country:"Australia", CountryCode:"AU", City:"Melbourne"}

Mapquest Nominatim
Melbourne VIC location is (-37.814218, 144.963161)
Address of (-37.813611,144.963056) is Melbourne's GPO, Postal Lane, Melbourne, City of Melbourne, Greater Melbourne, Victoria, 3000, Australia
Detailed address: &geo.Address{FormattedAddress:"Melbourne's GPO, Postal Lane, Melbourne, City of Melbourne, Greater Melbourne, Victoria, 3000, Australia", Street:"Postal Lane", HouseNumber:"", Suburb:"Melbourne", Postcode:"3000", State:"Victoria", StateDistrict:"", County:"City of Melbourne", Country:"Australia", CountryCode:"AU", City:"Melbourne"}

Mapquest Open streetmaps
Melbourne VIC location is (-37.814218, 144.963161)
Address of (-37.813611,144.963056) is Elizabeth Street, 3000, Melbourne, Victoria, AU
Detailed address: &geo.Address{FormattedAddress:"Elizabeth Street, 3000, Melbourne, Victoria, AU", Street:"Elizabeth Street", HouseNumber:"", Suburb:"", Postcode:"3000", State:"Victoria", StateDistrict:"", County:"", Country:"", CountryCode:"AU", City:"Melbourne"}

OpenCage Data
Melbourne VIC location is (-37.814217, 144.963161)
Address of (-37.813611,144.963056) is Melbourne's GPO, Postal Lane, Melbourne VIC 3000, Australia
Detailed address: &geo.Address{FormattedAddress:"Melbourne's GPO, Postal Lane, Melbourne VIC 3000, Australia", Street:"Postal Lane", HouseNumber:"", Suburb:"Melbourne (3000)", Postcode:"3000", State:"Victoria", StateDistrict:"", County:"City of Melbourne", Country:"Australia", CountryCode:"AU", City:"Melbourne"}

HERE API
Melbourne VIC location is (-37.817530, 144.967150)
Address of (-37.813611,144.963056) is 197 Elizabeth St, Melbourne VIC 3000, Australia
Detailed address: &geo.Address{FormattedAddress:"197 Elizabeth St, Melbourne VIC 3000, Australia", Street:"Elizabeth St", HouseNumber:"197", Suburb:"", Postcode:"3000", State:"Victoria", StateDistrict:"", County:"", Country:"Australia", CountryCode:"AUS", City:"Melbourne"}

Bing Geocoding API
Melbourne VIC location is (-37.824299, 144.977997)
Address of (-37.813611,144.963056) is Elizabeth St, Melbourne, VIC 3000
Detailed address: &geo.Address{FormattedAddress:"Elizabeth St, Melbourne, VIC 3000", Street:"Elizabeth St", HouseNumber:"", Suburb:"", Postcode:"3000", State:"", StateDistrict:"", County:"", Country:"Australia", CountryCode:"", City:"Melbourne"}

Mapbox API
Melbourne VIC location is (-37.814200, 144.963200)
Address of (-37.813611,144.963056) is Elwood Park Playground, Melbourne, Victoria 3000, Australia
Detailed address: &geo.Address{FormattedAddress:"Elwood Park Playground, Melbourne, Victoria 3000, Australia", Street:"Elwood Park Playground", HouseNumber:"", Suburb:"", Postcode:"3000", State:"Victoria", StateDistrict:"", County:"", Country:"Australia", CountryCode:"AU", City:"Melbourne"}

OpenStreetMap
Melbourne VIC location is (-37.814217, 144.963161)
Address of (-37.813611,144.963056) is Melbourne's GPO, Postal Lane, Chinatown, Melbourne, City of Melbourne, Greater Melbourne, Victoria, 3000, Australia
Detailed address: &geo.Address{FormattedAddress:"Melbourne's GPO, Postal Lane, Chinatown, Melbourne, City of Melbourne, Greater Melbourne, Victoria, 3000, Australia", Street:"Postal Lane", HouseNumber:"", Suburb:"Melbourne", Postcode:"3000", State:"Victoria", StateDistrict:"", County:"", Country:"Australia", CountryCode:"AU", City:"Melbourne"}

PickPoint
Melbourne VIC location is (-37.814217, 144.963161)
Address of (-37.813611,144.963056) is Melbourne's GPO, Postal Lane, Chinatown, Melbourne, City of Melbourne, Greater Melbourne, Victoria, 3000, Australia
Detailed address: &geo.Address{FormattedAddress:"Melbourne's GPO, Postal Lane, Chinatown, Melbourne, City of Melbourne, Greater Melbourne, Victoria, 3000, Australia", Street:"Postal Lane", HouseNumber:"", Suburb:"Melbourne", Postcode:"3000", State:"Victoria", StateDistrict:"", County:"", Country:"Australia", CountryCode:"AU", City:"Melbourne"}

LocationIQ
Melbourne VIC location is (-37.814217, 144.963161)
Address of (-37.813611,144.963056) is Melbourne's GPO, Postal Lane, Chinatown, Melbourne, City of Melbourne, Greater Melbourne, Victoria, 3000, Australia
Detailed address: &geo.Address{FormattedAddress:"Melbourne's GPO, Postal Lane, Chinatown, Melbourne, City of Melbourne, Greater Melbourne, Victoria, 3000, Australia", Street:"Postal Lane", HouseNumber:"", Suburb:"Melbourne", Postcode:"3000", State:"Victoria", StateDistrict:"", County:"", Country:"Australia", CountryCode:"AU", City:"Melbourne"}

ArcGIS
Melbourne VIC location is (-37.817530, 144.967150)
Address of (-37.813611,144.963056) is Melbourne's Gpo
Detailed address: &geo.Address{FormattedAddress:"Melbourne's Gpo", Street:"350 Bourke Street Mall", HouseNumber:"350", Suburb:"", Postcode:"3000", State:"Victoria", StateDistrict:"", County:"", Country:"", CountryCode:"AUS", City:""}

geocod.io
Melbourne VIC location is (28.079357, -80.623618)
got <nil> address

Mapzen
Melbourne VIC location is (45.551136, 11.533929)
Address of (-37.813611,144.963056) is Stop 3: Bourke Street Mall, Bourke Street, Melbourne, Australia
Detailed address: &geo.Address{FormattedAddress:"Stop 3: Bourke Street Mall, Bourke Street, Melbourne, Australia", Street:"", HouseNumber:"", Suburb:"", Postcode:"", State:"Victoria", StateDistrict:"", County:"", Country:"Australia", CountryCode:"AUS", City:""}

TomTom
Melbourne VIC location is (-37.815340, 144.963230)
Address of (-37.813611,144.963056) is Doyles Road, Elaine, West Central Victoria, Victoria, 3334
Detailed address: &geo.Address{FormattedAddress:"Doyles Road, Elaine, West Central Victoria, Victoria, 3334", Street:"Doyles Road", HouseNumber:"", Suburb:"", Postcode:"3334", State:"Victoria", StateDistrict:"", County:"", Country:"Australia", CountryCode:"AU", City:"Elaine"}

Yandex
Melbourne VIC location is (41.926823, 2.254232)
Address of (-37.813611,144.963056) is Victoria, City of Melbourne, Elizabeth Street
Detailed address: &geo.Address{FormattedAddress:"Victoria, City of Melbourne, Elizabeth Street", Street:"Elizabeth Street", HouseNumber:"", Suburb:"", Postcode:"", State:"Victoria", StateDistrict:"", County:"", Country:"Australia", CountryCode:"AU", City:"City of Melbourne"}

ChainedAPI[OpenStreetmap -> Google]
Melbourne VIC location is (-37.814217, 144.963161)
Address of (-37.813611,144.963056) is Melbourne's GPO, Postal Lane, Chinatown, Melbourne, City of Melbourne, Greater Melbourne, Victoria, 3000, Australia
Detailed address: &geo.Address{FormattedAddress:"Melbourne's GPO, Postal Lane, Chinatown, Melbourne, City of Melbourne, Greater Melbourne, Victoria, 3000, Australia", Street:"Postal Lane", HouseNumber:"", Suburb:"Melbourne", Postcode:"3000", State:"Victoria", StateDistrict:"", County:"", Country:"Australia", CountryCode:"AU", City:"Melbourne"}

License

geo-golang is distributed under the terms of the MIT license. See LICENSE for details.

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Name		Name	Last commit message	Last commit date
Latest commit History 162 Commits
arcgis		arcgis
bing		bing
cached		cached
chained		chained
data		data
examples		examples
geocod		geocod
google		google
here		here
locationiq		locationiq
mapbox		mapbox
mapquest		mapquest
mapzen		mapzen
opencage		opencage
openstreetmap		openstreetmap
osm		osm
pickpoint		pickpoint
tomtom		tomtom
yandex		yandex
.gitignore		.gitignore
.travis.yml		.travis.yml
LICENSE		LICENSE
README.md		README.md
geocoder.go		geocoder.go
http_geocoder.go		http_geocoder.go

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tylersampson/geo-golang

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