--- /dev/null
+#!/usr/bin/env ruby
+
+abort 'Error: Ruby >= 1.9.3 required.' if RUBY_VERSION < '1.9.3'
+
+require 'logger'
+require 'trollop'
+log = Logger.new STDERR
+log.progname = $0.split('/').last
+
+opts = Trollop::options do
+ banner ''
+ banner "Usage: #{log.progname} " +
+ "{user_uuid_or_email} {user_and_repo_name} {vm_uuid}"
+ banner ''
+ opt :debug, <<-eos
+Show debug messages.
+ eos
+ opt :create, <<-eos
+Create a new user with the given email address if an existing user \
+is not found.
+ eos
+ opt :openid_prefix, <<-eos, default: 'https://www.google.com/accounts/o8/id'
+If creating a new user record, require authentication from an OpenID \
+with this OpenID prefix *and* a matching email address in order to \
+claim the account.
+ eos
+ opt :force, <<-eos
+Continue even if sanity checks raise flags: the given user is already \
+active, the given repository already exists, etc.
+ eos
+ opt :n, 'Do not change anything, just probe'
+end
+
+log.level = (ENV['DEBUG'] || opts.debug) ? Logger::DEBUG : Logger::WARN
+
+if ARGV.count != 3
+ Trollop::die "required arguments are missing"
+end
+user_arg, user_repo_name, vm_uuid = ARGV
+
+require 'arvados'
+arv = Arvados.new(api_version: 'v1')
+
+begin
+ new_user = arv.user.create(user_param: user_arg, repo_name: user_repo_name, vm_uuid: vm_uuid, openid_prefix: opts.openid_prefix, just_probe: opts.n, user: {})
+ log.warn new_user
+rescue Exception => e #Arvados::TransactionFailedError
+ log.warn e.message
+end
+