auth_with_svcacc.go

package main

import (
  log "github.com/sirupsen/logrus"
  "libs.altipla.consulting/errors"

  "golang.org/x/oauth2/google"
)

func main() {
  if err := run(); err != nil {
    log.Fatal(errors.Stack(err))
  }
}

const foo = `
{
...
}
`

func run() error {
	ts, err := google.JWTAccessTokenSourceFromJSON([]byte(foo), "http://vault/my-iam-role")
	if err != nil {
	  return errors.Trace(err)
	}
	token, err := ts.Token()
	if err != nil {
	  return errors.Trace(err)
	}

	log.Println(token)

  return nil
}