// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build ignore
package main
import (
"bufio"
"bytes"
"encoding/json"
"flag"
"fmt"
"io"
"io/ioutil"
"log"
"net/http"
"os"
"strings"
"time"
"golang.org/x/oauth2"
"golang.org/x/oauth2/google"
compute "google.golang.org/api/compute/v1"
)
var (
proj = flag.String("project", "symbolic-datum-552", "name of Project")
zone = flag.String("zone", "us-central1-a", "GCE zone")
mach = flag.String("machinetype", "n1-standard-1", "Machine type")
instName = flag.String("instance_name", "http2-demo", "Name of VM instance.")
sshPub = flag.String("ssh_public_key", "", "ssh public key file to authorize. Can modify later in Google's web UI anyway.")
staticIP = flag.String("static_ip", "130.211.116.44", "Static IP to use. If empty, automatic.")
writeObject = flag.String("write_object", "", "If non-empty, a VM isn't created and the flag value is Google Cloud Storage bucket/object to write. The contents from stdin.")
publicObject = flag.Bool("write_object_is_public", false, "Whether the object created by --write_object should be public.")
)
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 = &oauth2.Config{
// The client-id and secret should be for an "Installed Application" when using
// the CLI. Later we'll use a web application with a callback.
ClientID: readFile("client-id.dat"),
ClientSecret: readFile("client-secret.dat"),
Endpoint: google.Endpoint,
Scopes: []string{
compute.DevstorageFullControlScope,
compute.ComputeScope,
"https://www.googleapis.com/auth/sqlservice",
"https://www.googleapis.com/auth/sqlservice.admin",
},
RedirectURL: "urn:ietf:wg:oauth:2.0:oob",
}
const baseConfig = `#cloud-config
coreos:
units:
- name: h2demo.service
command: start
content: |
[Unit]
Description=HTTP2 Demo
[Service]
ExecStartPre=/bin/bash -c 'mkdir -p /opt/bin && curl -s -o /opt/bin/h2demo http://storage.googleapis.com/http2-demo-server-tls/h2demo && chmod +x /opt/bin/h2demo'
ExecStart=/opt/bin/h2demo --prod
RestartSec=5s
Restart=always
Type=simple
[Install]
WantedBy=multi-user.target
`
func main() {
flag.Parse()
if *proj == "" {
log.Fatalf("Missing --project flag")
}
prefix := "https://www.googleapis.com/compute/v1/projects/" + *proj
machType := prefix + "/zones/" + *zone + "/machineTypes/" + *mach
const tokenFileName = "token.dat"
tokenFile := tokenCacheFile(tokenFileName)
tokenSource := oauth2.ReuseTokenSource(nil, tokenFile)
token, err := tokenSource.Token()
if err != nil {
if *writeObject != "" {
log.Fatalf("Can't use --write_object without a valid token.dat file already cached.")
}
log.Printf("Error getting token from %s: %v", tokenFileName, err)
log.Printf("Get auth code from %v", config.AuthCodeURL("my-state"))
fmt.Print("\nEnter auth code: ")
sc := bufio.NewScanner(os.Stdin)
sc.Scan()
authCode := strings.TrimSpace(sc.Text())
token, err = config.Exchange(oauth2.NoContext, authCode)
if err != nil {
log.Fatalf("Error exchanging auth code for a token: %v", err)
}
if err := tokenFile.WriteToken(token); err != nil {
log.Fatalf("Error writing to %s: %v", tokenFileName, err)
}
tokenSource = oauth2.ReuseTokenSource(token, nil)
}
oauthClient := oauth2.NewClient(oauth2.NoContext, tokenSource)
if *writeObject != "" {
writeCloudStorageObject(oauthClient)
return
}
computeService, _ := compute.New(oauthClient)
natIP := *staticIP
if natIP == "" {
// Try to find it by name.
aggAddrList, err := computeService.Addresses.AggregatedList(*proj).Do()
if err != nil {
log.Fatal(err)
}
// http://godoc.org/code.google.com/p/google-api-go-client/compute/v1#AddressAggregatedList
IPLoop:
for _, asl := range aggAddrList.Items {
for _, addr := range asl.Addresses {
if addr.Name == *instName+"-ip" && addr.Status == "RESERVED" {
natIP = addr.Address
break IPLoop
}
}
}
}
cloudConfig := baseConfig
if *sshPub != "" {
key := strings.TrimSpace(readFile(*sshPub))
cloudConfig += fmt.Sprintf("\nssh_authorized_keys:\n - %s\n", key)
}
if os.Getenv("USER") == "bradfitz" {
cloudConfig += fmt.Sprintf("\nssh_authorized_keys:\n - %s\n", "ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAIEAwks9dwWKlRC+73gRbvYtVg0vdCwDSuIlyt4z6xa/YU/jTDynM4R4W10hm2tPjy8iR1k8XhDv4/qdxe6m07NjG/By1tkmGpm1mGwho4Pr5kbAAy/Qg+NLCSdAYnnE00FQEcFOC15GFVMOW2AzDGKisReohwH9eIzHPzdYQNPRWXE= bradfitz@papag.bradfitz.com")
}
const maxCloudConfig = 32 << 10 // per compute API docs
if len(cloudConfig) > maxCloudConfig {
log.Fatalf("cloud config length of %d bytes is over %d byte limit", len(cloudConfig), maxCloudConfig)
}
instance := &compute.Instance{
Name: *instName,
Description: "Go Builder",
MachineType: machType,
Disks: []*compute.AttachedDisk{instanceDisk(computeService)},
Tags: &compute.Tags{
Items: []string{"http-server", "https-server"},
},
Metadata: &compute.Metadata{
Items: []*compute.MetadataItems{
{
Key: "user-data",
Value: &cloudConfig,
},
},
},
NetworkInterfaces: []*compute.NetworkInterface{
{
AccessConfigs: []*compute.AccessConfig{
{
Type: "ONE_TO_ONE_NAT",
Name: "External NAT",
NatIP: natIP,
},
},
Network: prefix + "/global/networks/default",
},
},
ServiceAccounts: []*compute.ServiceAccount{
{
Email: "default",
Scopes: []string{
compute.DevstorageFullControlScope,
compute.ComputeScope,
},
},
},
}
log.Printf("Creating instance...")
op, err := computeService.Instances.Insert(*proj, *zone, instance).Do()
if err != nil {
log.Fatalf("Failed to create instance: %v", err)
}
opName := op.Name
log.Printf("Created. Waiting on operation %v", opName)
OpLoop:
for {
time.Sleep(2 * time.Second)
op, err := computeService.ZoneOperations.Get(*proj, *zone, opName).Do()
if err != nil {
log.Fatalf("Failed to get op %s: %v", opName, err)
}
switch op.Status {
case "PENDING", "RUNNING":
log.Printf("Waiting on operation %v", opName)
continue
case "DONE":
if op.Error != nil {
for _, operr := range op.Error.Errors {
log.Printf("Error: %+v", operr)
}
log.Fatalf("Failed to start.")
}
log.Printf("Success. %+v", op)
break OpLoop
default:
log.Fatalf("Unknown status %q: %+v", op.Status, op)
}
}
inst, err := computeService.Instances.Get(*proj, *zone, *instName).Do()
if err != nil {
log.Fatalf("Error getting instance after creation: %v", err)
}
ij, _ := json.MarshalIndent(inst, "", " ")
log.Printf("Instance: %s", ij)
}
func instanceDisk(svc *compute.Service) *compute.AttachedDisk {
const imageURL = "https://www.googleapis.com/compute/v1/projects/coreos-cloud/global/images/coreos-stable-444-5-0-v20141016"
diskName := *instName + "-disk"
return &compute.AttachedDisk{
AutoDelete: true,
Boot: true,
Type: "PERSISTENT",
InitializeParams: &compute.AttachedDiskInitializeParams{
DiskName: diskName,
SourceImage: imageURL,
DiskSizeGb: 50,
},
}
}
func writeCloudStorageObject(httpClient *http.Client) {
content := os.Stdin
const maxSlurp = 1 << 20
var buf bytes.Buffer
n, err := io.CopyN(&buf, content, maxSlurp)
if err != nil && err != io.EOF {
log.Fatalf("Error reading from stdin: %v, %v", n, err)
}
contentType := http.DetectContentType(buf.Bytes())
req, err := http.NewRequest("PUT", "https://storage.googleapis.com/"+*writeObject, io.MultiReader(&buf, content))
if err != nil {
log.Fatal(err)
}
req.Header.Set("x-goog-api-version", "2")
if *publicObject {
req.Header.Set("x-goog-acl", "public-read")
}
req.Header.Set("Content-Type", contentType)
res, err := httpClient.Do(req)
if err != nil {
log.Fatal(err)
}
if res.StatusCode != 200 {
res.Write(os.Stderr)
log.Fatalf("Failed.")
}
log.Printf("Success.")
os.Exit(0)
}
type tokenCacheFile string
func (f tokenCacheFile) Token() (*oauth2.Token, error) {
slurp, err := ioutil.ReadFile(string(f))
if err != nil {
return nil, err
}
t := new(oauth2.Token)
if err := json.Unmarshal(slurp, t); err != nil {
return nil, err
}
return t, nil
}
func (f tokenCacheFile) WriteToken(t *oauth2.Token) error {
jt, err := json.Marshal(t)
if err != nil {
return err
}
return ioutil.WriteFile(string(f), jt, 0600)
}