94 lines
2.7 KiB
Go
94 lines
2.7 KiB
Go
// Copyright 2014 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package main
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import (
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"fmt"
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"log"
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"net/http"
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"os"
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"strings"
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"time"
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mapsengine "google.golang.org/api/mapsengine/v1"
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)
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func init() {
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scopes := []string{
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mapsengine.MapsengineScope,
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mapsengine.MapsengineReadonlyScope,
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}
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registerDemo("mapsengine", strings.Join(scopes, " "), mapsengineMain)
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}
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func showMapFeatures(svc *mapsengine.Service, id string) {
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r, err := svc.Tables.Get(id).Version("published").Do()
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if err != nil {
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log.Fatalf("Unable to get map %v table: %v", id, err)
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}
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fmt.Printf("Map ID: %v, Name: %q, Description: %q\n", id, r.Name, r.Description)
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pageToken := ""
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for {
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time.Sleep(1 * time.Second) // Don't violate free rate limit
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// Read the location of every Feature in a Table.
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req := svc.Tables.Features.List(id).MaxResults(500).Version("published")
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if pageToken != "" {
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req.PageToken(pageToken)
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}
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r, err := req.Do()
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if err != nil {
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log.Fatalf("Unable to list table features: %v", err)
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}
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for _, f := range r.Features {
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if v, ok := f.Geometry.GeometryCollection(); ok {
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fmt.Printf("%v: %v\n", f.Geometry.Type(), v)
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} else if v, ok := f.Geometry.LineString(); ok {
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fmt.Printf("%v: %v\n", f.Geometry.Type(), v)
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} else if v, ok := f.Geometry.MultiLineString(); ok {
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fmt.Printf("%v: %v\n", f.Geometry.Type(), v)
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} else if v, ok := f.Geometry.MultiPoint(); ok {
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fmt.Printf("%v: %v\n", f.Geometry.Type(), v)
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} else if v, ok := f.Geometry.MultiPolygon(); ok {
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fmt.Printf("%v: %v\n", f.Geometry.Type(), v)
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} else if v, ok := f.Geometry.Point(); ok {
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fmt.Printf("%v: %v\n", f.Geometry.Type(), v)
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} else if v, ok := f.Geometry.Polygon(); ok {
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fmt.Printf("%v: %v\n", f.Geometry.Type(), v)
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} else {
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log.Fatalf("Unknown GeoJsonGeometry type %q", f.Geometry.Type())
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}
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}
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if r.NextPageToken == "" {
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break
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}
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pageToken = r.NextPageToken
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}
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}
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// mapsengineMain is an example that demonstrates calling the Mapsengine API.
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// Please see https://developers.google.com/maps-engine/documentation/hello-world#go
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// for more information.
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//
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// Example usage:
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// go build -o go-api-demo *.go
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// go-api-demo -clientid="my-clientid" -secret="my-secret" mapsengine
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func mapsengineMain(client *http.Client, argv []string) {
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if len(argv) != 0 {
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fmt.Fprintln(os.Stderr, "Usage: mapsengine")
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return
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}
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svc, err := mapsengine.New(client)
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if err != nil {
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log.Fatalf("Unable to create Mapsengine service: %v", err)
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}
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showMapFeatures(svc, "14137585153106784136-16071188762309719429")
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showMapFeatures(svc, "12421761926155747447-06672618218968397709")
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}
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