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button.go
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button.go
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package main
import (
"fmt"
"log"
"net/http"
"os"
"golang.org/x/net/context"
"golang.org/x/oauth2/google"
"google.golang.org/api/compute/v1"
)
func onHandler(w http.ResponseWriter, r *http.Request) {
ctx := context.Background()
c, err := google.DefaultClient(ctx, compute.CloudPlatformScope)
if err != nil {
log.Fatal(err)
}
computeService, err := compute.New(c)
if err != nil {
log.Fatal(err)
}
project := os.Getenv("PROJECT")
zone := os.Getenv("ZONE")
instance := os.Getenv("INSTANCE")
resp, err := computeService.Instances.Start(project, zone, instance).Context(ctx).Do()
if err != nil {
log.Fatal(err)
}
log.Print(resp, resp.Status)
}
func offHandler(w http.ResponseWriter, r *http.Request) {
ctx := context.Background()
c, err := google.DefaultClient(ctx, compute.CloudPlatformScope)
if err != nil {
log.Fatal(err)
}
computeService, err := compute.New(c)
if err != nil {
log.Fatal(err)
}
project := os.Getenv("PROJECT")
zone := os.Getenv("ZONE")
instance := os.Getenv("INSTANCE")
resp, err := computeService.Instances.Stop(project, zone, instance).Context(ctx).Do()
if err != nil {
log.Fatal(err)
}
log.Print(resp, resp.Status)
}
func main() {
log.Print("Power Button Pushed")
http.HandleFunc("/on", onHandler)
http.HandleFunc("/off", offHandler)
port := os.Getenv("PORT")
if port == "" {
port = "8080"
}
log.Fatal(http.ListenAndServe(fmt.Sprintf(":%s", port), nil))
}