Start of tool to create Camlistore instances on GCE.

Will be wrapped in a webserver later.

Change-Id: I95738e57e3e3db11436af777cbf21e680dd10d66

misc/gce/.gitignore

@@ -0,0 +1,3 @@
+client-id.dat
+client-secret.dat
+auth-code.dat

misc/gce/create.go

@@ -0,0 +1,67 @@
+package main
+
+import (
+	"flag"
+	"io/ioutil"
+	"log"
+	"os"
+	"strings"
+
+	"camlistore.org/third_party/code.google.com/p/goauth2/oauth"
+	compute "camlistore.org/third_party/code.google.com/p/google-api-go-client/compute/v1"
+)
+
+var (
+	projFlag = flag.String("project", "", "name of Project")
+	zoneFlag = flag.String("zone", "us-central1-a", "GCE zone")
+	machFlag = flag.String("machinetype", "g1-small", "e.g. n1-standard-1, f1-micro, g1-small")
+)
+
+func readFile(v string) string {
+	slurp, err := ioutil.ReadFile(v)
+	if err != nil {
+		log.Fatalf("Error reading %s: %v", v, err)
+	}
+	return strings.TrimSpace(string(slurp))
+}
+
+var config = &oauth.Config{
+	ClientId:     readFile("client-id.dat"),
+	ClientSecret: readFile("client-secret.dat"),
+	Scope: strings.Join([]string{
+		compute.DevstorageFull_controlScope,
+		compute.ComputeScope,
+		"https://www.googleapis.com/auth/sqlservice",
+		"https://www.googleapis.com/auth/sqlservice.admin",
+	}, " "),
+	AuthURL:     "https://accounts.google.com/o/oauth2/auth",
+	TokenURL:    "https://accounts.google.com/o/oauth2/token",
+	RedirectURL: "urn:ietf:wg:oauth:2.0:oob",
+}
+
+func main() {
+	flag.Parse()
+	if *projFlag == "" {
+		log.Fatalf("Missing --project flag")
+	}
+	proj := *projFlag
+	prefix := "https://www.googleapis.com/compute/v1/projects/" + proj
+	imageURL := "https://www.googleapis.com/compute/v1/projects/coreos-cloud/global/images/coreos-alpha-402-2-0-v20140807"
+	machType := prefix + "/zones/" + *zoneFlag + "/machineTypes/" + *machFlag
+
+	if _, err := os.Stat("auth-code.dat"); err != nil {
+		log.Printf("No auth code in file auth-code.dat. Get auth code from %v", config.AuthCodeURL("my-state"))
+		return
+	}
+	authCode := readFile("auth-code.dat")
+
+	tr := &oauth.Transport{
+		Config: config,
+	}
+	t, err := tr.Exchange(authCode)
+	if err != nil {
+		log.Fatal(err)
+	}
+	log.Printf("Got token: %#v", t)
+	_, _ = machType, imageURL
+}