about summary refs log tree commit diff
path: root/fun/amsterdump/main.go
diff options
context:
space:
mode:
Diffstat (limited to 'fun/amsterdump/main.go')
-rw-r--r--fun/amsterdump/main.go108
1 files changed, 0 insertions, 108 deletions
diff --git a/fun/amsterdump/main.go b/fun/amsterdump/main.go
deleted file mode 100644
index 77f7392f4b7c..000000000000
--- a/fun/amsterdump/main.go
+++ /dev/null
@@ -1,108 +0,0 @@
-// Amsterdump is a small program that populates a BigQuery table with
-// a matrix of origin points scattered around Amsterdam and each
-// respective points travel time to a given destination.
-//
-// The two destinations used here are the Schiphol Airport and
-// Amsterdam Central station.
-//
-// To accomplish this the Google Maps Distance Matrix API [1] is
-// queried with the points. A visualisation is later done using
-// BigQuery GeoViz[2].
-//
-// [1]: https://developers.google.com/maps/documentation/distance-matrix/start#quotas
-// [2]: https://bigquerygeoviz.appspot.com/
-package main
-
-import (
-	"context"
-	"encoding/json"
-	"fmt"
-	"io/ioutil"
-	"log"
-	"os"
-
-	"googlemaps.github.io/maps"
-)
-
-func failOn(err error, msg string) {
-	if err != nil {
-		log.Fatalln(msg, err)
-	}
-}
-
-type LocationResult struct {
-	Address  string                      `json:"address"`
-	URL      string                      `json:"url"`
-	Schiphol *maps.DistanceMatrixElement `json:"schiphol"`
-	Centraal *maps.DistanceMatrixElement `json:"centraal"`
-}
-
-type Listing struct {
-	URL     string `json:"url"`
-	Address string `json:"address"`
-}
-
-func requestMatrix(ctx context.Context, client *maps.Client, listings []Listing) {
-	origins := make([]string, len(listings))
-	for i, l := range listings {
-		origins[i] = l.Address
-	}
-
-	request := &maps.DistanceMatrixRequest{
-		Mode:    maps.TravelModeTransit,
-		Units:   maps.UnitsMetric,
-		Origins: origins,
-
-		Destinations: []string{
-			"Schiphol Airport",
-			"Amsterdam Centraal",
-		},
-	}
-
-	response, err := client.DistanceMatrix(ctx, request)
-	failOn(err, "could not retrieve distance matrix:")
-
-	for idx, addr := range response.OriginAddresses {
-		result := LocationResult{
-			Address:  addr,
-			URL:      listings[idx].URL,
-			Schiphol: response.Rows[idx].Elements[0],
-			Centraal: response.Rows[idx].Elements[1],
-		}
-
-		j, _ := json.Marshal(result)
-		fmt.Println(string(j))
-	}
-}
-
-func main() {
-	var listings []Listing
-	input, err := ioutil.ReadFile("fun/amsterdump/input.json")
-	failOn(err, "could not read input file:")
-
-	err = json.Unmarshal(input, &listings)
-	failOn(err, "could not deserialise listings:")
-
-	ctx := context.Background()
-	apiKey := os.Getenv("MAPS_API_KEY")
-	if apiKey == "" {
-		log.Fatalln("API key must be supplied via MAPS_API_KEY")
-	}
-
-	client, err := maps.NewClient(maps.WithAPIKey(apiKey))
-	failOn(err, "could not create Google Maps API client:")
-
-	var chunk []Listing
-	for _, l := range listings {
-		if len(chunk) == 25 {
-			requestMatrix(ctx, client, chunk)
-			chunk = []Listing{}
-		} else {
-			chunk = append(chunk, l)
-		}
-	}
-
-	if len(chunk) > 1 {
-		requestMatrix(ctx, client, chunk)
-	}
-}