HERE Go

Go SDK for the HERE Maps API.

Documentation

API documentation can be found at developer.here.com.

Installing

$ go get go.einride.tech/here

Authentication

The package does not directly handle authentication. Instead, when creating a new client, pass an http.Client that can handle authentication for you.

Note that when using an authenticated Client, all calls made by the client will include the same authentication data. Therefore, authenticated clients should almost never be shared between different users.

Complete Examples

v7 Routing API

Route calculation

package main

import (
	"context"
	"fmt"
	"net/http"
	"os"

	"go.einride.tech/here/routingv7"
)

func main() {
	ctx := context.Background()
	apiKey := os.Getenv("HERE_API_KEY")
	// Create an authenticated client
	routingClient := routingv7.New(
		routingv7.NewAPIKeyHTTPClient(apiKey, http.DefaultClient.Transport),
	)
	// Einride Gothenburg.
	origin := &routingv7.GeoWaypoint{
		Lat:  57.707752,
		Long: 11.949767,
	}
	// Einride Stockholm.
	destination := &routingv7.GeoWaypoint{
		Lat:  59.337492,
		Long: 18.063672,
	}
	// Call Here Maps API
	response, err := routingClient.Route.CalculateRoute(ctx, &routingv7.CalculateRouteRequest{
		Waypoints: []routingv7.WaypointParameter{origin, destination},
		Mode: routingv7.RoutingMode{
			Type: routingv7.RouteTypeFastest,
		},
	})
	if err != nil {
		panic(err) // TODO: Handle error.
	}
	// Handle result
	for _, route := range response.Routes {
		fmt.Println(route.Summary)
	}
}

v8 Routing API

package main

import (
	"context"
	"fmt"
	"net/http"
	"os"

	"go.einride.tech/here/routingv8"
)

func main() {
	ctx := context.Background()
	apiKey := os.Getenv("HERE_API_KEY")
	// Create an authenticated client
	routingClient := routingv8.New(
		routingv8.NewAPIKeyHTTPClient(apiKey, http.DefaultClient.Transport),
	)
	// Einride Gothenburg.
	origins := []*routingv8.GeoWaypoint{
		{
			Lat:  57.707752,
			Long: 11.949767,
		},
	}
	// Einride Stockholm.
	destinations := []*routingv8.GeoWaypoint{
		{
			Lat:  59.337492,
			Long: 18.063672,
		},
	}
	// Call Here Maps API
	response, err := routingClient.Matrix.CalculateMatrix(ctx, &routingv8.CalculateMatrixRequest{
		Async: false,
		Body: &routingv8.CalculateMatrixBody{
			Origins:      origins,
			Destinations: destinations,
			RegionDefinition: routingv8.RegionDefinition{
				Type: routingv8.RegionType_World,
			},
			Profile: routingv8.Profile_TruckFast,
			MatrixAttributes: &routingv8.MatrixAttributes{
				routingv8.MatrixAttribute_Distances,
				routingv8.MatrixAttribute_TravelTimes,
			},
		},
	})
	if err != nil {
		panic(err) // TODO: handle error
	}
	// Handle result
	fmt.Printf("matrix ID: %s \n", response.MatrixID)
	for i, distance := range response.Matrix.Distances {
		fmt.Printf("Route %d: %d meters \n", i, distance)
	}
}

v7 Geocoding & Search API

package main

import (
	"context"
	"fmt"
	"net/http"
	"os"

	"go.einride.tech/here/geocodingsearchv7"
)

func main() {
	ctx := context.Background()
	apiKey := os.Getenv("HERE_API_KEY")
	// Create an authenticated client
	geocodingClient := geocodingsearchv7.NewClient(
		geocodingsearchv7.NewAPIKeyHTTPClient(apiKey, http.DefaultClient.Transport),
	)

	// The query to geocode
	q := "Regeringsgatan 65, Stocholm"
	// Call Here Maps API
	response, err := geocodingClient.Geocoding.Geocoding(ctx, &geocodingsearchv7.GeocodingRequest{
		Q: &q,
	})
	if err != nil {
		panic(err) // TODO: handle error
	}
	// Handle result
	for _, item := range response.Items {
		fmt.Printf("Geocoded location lat/lng: %f %f  \n", item.Position.Lat, item.Position.Long)
	}
}