require 'test_helper'
+require 'helpers/users_test_helper'
class Arvados::V1::UsersControllerTest < ActionController::TestCase
include CurrentApiClient
+ include UsersTestHelper
setup do
@all_links_at_start = Link.all
test "activate a user after signing UA" do
authorize_with :inactive_but_signed_user_agreement
- get :current
- assert_response :success
- me = JSON.parse(@response.body)
- post :activate, id: me['uuid']
+ post :activate, id: users(:inactive_but_signed_user_agreement).uuid
assert_response :success
assert_not_nil assigns(:object)
me = JSON.parse(@response.body)
name: 'click',
tail_uuid: users(:inactive).uuid,
head_uuid: required_uuids).
- collect(&:head_uuid)
+ collect(&:head_uuid)
assert_equal 0, signed_uuids.length
end
authorize_with :inactive
+ assert_equal false, users(:inactive).is_active
- get :current
- assert_response :success
- me = JSON.parse(@response.body)
- assert_equal false, me['is_active']
-
- post :activate, id: me['uuid']
+ post :activate, id: users(:inactive).uuid
assert_response 403
- get :current
- assert_response :success
- me = JSON.parse(@response.body)
- assert_equal false, me['is_active']
+ resp = json_response
+ assert resp['errors'].first.include? 'Cannot activate without user agreements'
+ assert_nil resp['is_active']
end
test "activate an already-active user" do
authorize_with :active
- get :current
- assert_response :success
- me = JSON.parse(@response.body)
- post :activate, id: me['uuid']
+ post :activate, id: users(:active).uuid
assert_response :success
me = JSON.parse(@response.body)
assert_equal true, me['is_active']
verify_link response_items, 'arvados#user', true, 'permission', 'can_login',
created['uuid'], created['email'], 'arvados#user', false, 'User'
- verify_link response_items, 'arvados#repository', true, 'permission', 'can_write',
+ verify_link response_items, 'arvados#repository', true, 'permission', 'can_manage',
repo_name, created['uuid'], 'arvados#repository', true, 'Repository'
verify_link response_items, 'arvados#group', true, 'permission', 'can_read',
nil, created['uuid'], 'arvados#virtualMachine', false, 'VirtualMachine'
verify_system_group_permission_link_for created['uuid']
-
- # invoke setup again with the same data
- post :setup, {
- repo_name: repo_name,
- vm_uuid: @vm_uuid,
- openid_prefix: 'https://www.google.com/accounts/o8/id',
- user: {
- uuid: 'zzzzz-tpzed-abcdefghijklmno',
- first_name: "in_create_test_first_name",
- last_name: "test_last_name",
- email: "foo@example.com"
- }
- }
- assert_response :success
-
- response_items = JSON.parse(@response.body)['items']
-
- created = find_obj_in_resp response_items, 'User', nil
- assert_equal 'in_create_test_first_name', created['first_name']
- assert_not_nil created['uuid'], 'expected non-null uuid for the new user'
- assert_equal 'zzzzz-tpzed-abcdefghijklmno', created['uuid']
- assert_not_nil created['email'], 'expected non-nil email'
- assert_nil created['identity_url'], 'expected no identity_url'
-
- # arvados#user, repo link and link add user to 'All users' group
- verify_num_links @all_links_at_start, 5
-
- verify_link response_items, 'arvados#repository', true, 'permission', 'can_write',
- repo_name, created['uuid'], 'arvados#repository', true, 'Repository'
-
- verify_link response_items, 'arvados#group', true, 'permission', 'can_read',
- 'All users', created['uuid'], 'arvados#group', true, 'Group'
-
- verify_link response_items, 'arvados#virtualMachine', true, 'permission', 'can_login',
- @vm_uuid, created['uuid'], 'arvados#virtualMachine', false, 'VirtualMachine'
-
- verify_system_group_permission_link_for created['uuid']
end
test "setup user with bogus uuid and expect error" do
end
test "invoke setup with existing uuid, vm and repo and verify links" do
- authorize_with :inactive
- get :current
- assert_response :success
- inactive_user = JSON.parse(@response.body)
-
authorize_with :admin
+ inactive_user = users(:inactive)
post :setup, {
- uuid: inactive_user['uuid'],
+ uuid: users(:inactive).uuid,
repo_name: 'test_repo',
vm_uuid: @vm_uuid
}
'expecting inactive user email'
# expect repo and vm links
- verify_link response_items, 'arvados#repository', true, 'permission', 'can_write',
+ verify_link response_items, 'arvados#repository', true, 'permission', 'can_manage',
'test_repo', resp_obj['uuid'], 'arvados#repository', true, 'Repository'
verify_link response_items, 'arvados#virtualMachine', true, 'permission', 'can_login',
end
test "invoke setup with existing uuid in user, verify response" do
- authorize_with :inactive
- get :current
- assert_response :success
- inactive_user = JSON.parse(@response.body)
-
authorize_with :admin
+ inactive_user = users(:inactive)
post :setup, {
user: {uuid: inactive_user['uuid']},
end
test "invoke setup with existing uuid but different email, expect original email" do
- authorize_with :inactive
- get :current
- assert_response :success
- inactive_user = JSON.parse(@response.body)
-
authorize_with :admin
+ inactive_user = users(:inactive)
post :setup, {
uuid: inactive_user['uuid'],
verify_num_links @all_links_at_start, 5
end
- test "setup user with valid email, no vm and repo as input" do
+ test "setup user with valid email, no vm and no repo as input" do
authorize_with :admin
post :setup, {
# three extra links; system_group, login, and group
verify_num_links @all_links_at_start, 3
+
+ verify_link response_items, 'arvados#user', true, 'permission', 'can_login',
+ response_object['uuid'], response_object['email'], 'arvados#user', false, 'User'
+
+ verify_link response_items, 'arvados#group', true, 'permission', 'can_read',
+ 'All users', response_object['uuid'], 'arvados#group', true, 'Group'
+
+ verify_link response_items, 'arvados#repository', false, 'permission', 'can_manage',
+ 'test_repo', response_object['uuid'], 'arvados#repository', true, 'Repository'
+
+ verify_link response_items, 'arvados#virtualMachine', false, 'permission', 'can_login',
+ nil, response_object['uuid'], 'arvados#virtualMachine', false, 'VirtualMachine'
end
test "setup user with email, first name, repo name and vm uuid" do
verify_num_links @all_links_at_start, 5
end
- test "setup user twice with email and check two different objects created" do
+ test "setup user with an existing user email and check different object is created" do
authorize_with :admin
+ inactive_user = users(:inactive)
post :setup, {
openid_prefix: 'https://www.google.com/accounts/o8/id',
repo_name: 'test_repo',
user: {
- email: 'foo@example.com'
+ email: inactive_user['email']
}
}
response_items = JSON.parse(@response.body)['items']
response_object = find_obj_in_resp response_items, 'User', nil
assert_not_nil response_object['uuid'], 'expected uuid for new user'
- assert_equal response_object['email'], 'foo@example.com', 'expected given email'
+ assert_not_equal response_object['uuid'], inactive_user['uuid'],
+ 'expected different uuid after create operation'
+ assert_equal inactive_user['email'], response_object['email'], 'expected given email'
# system_group, openid, group, and repo. No vm link.
verify_num_links @all_links_at_start, 4
-
- # create again
- post :setup, {
- user: {email: 'foo@example.com'},
- openid_prefix: 'https://www.google.com/accounts/o8/id'
- }
-
- assert_response :success
- response_items = JSON.parse(@response.body)['items']
- response_object2 = find_obj_in_resp response_items, 'User', nil
- assert_not_equal response_object['uuid'], response_object2['uuid'],
- 'expected same uuid as first create operation'
- assert_equal response_object['email'], 'foo@example.com', 'expected given email'
-
- # +1 extra can_read 'all users' group link
- # +1 extra system_group can_manage link pointing to the new User
- # +1 extra can_login permission link
- # no repo link, no vm link
- verify_num_links @all_links_at_start, 7
end
test "setup user with openid prefix" do
verify_link response_items, 'arvados#user', true, 'permission', 'can_login',
created['uuid'], created['email'], 'arvados#user', false, 'User'
- verify_link response_items, 'arvados#repository', true, 'permission', 'can_write',
+ verify_link response_items, 'arvados#repository', true, 'permission', 'can_manage',
'test_repo', created['uuid'], 'arvados#repository', true, 'Repository'
verify_link response_items, 'arvados#group', true, 'permission', 'can_read',
verify_link response_items, 'arvados#user', true, 'permission', 'can_login',
created['uuid'], created['email'], 'arvados#user', false, 'User'
- verify_link response_items, 'arvados#repository', true, 'permission', 'can_write',
+ verify_link response_items, 'arvados#repository', true, 'permission', 'can_manage',
'test_repo', created['uuid'], 'arvados#repository', true, 'Repository'
verify_link response_items, 'arvados#group', true, 'permission', 'can_read',
'Expected Forbidden error'
end
- test "setup user in multiple steps and verify response" do
+ test "setup active user with repo and no vm" do
authorize_with :admin
+ active_user = users(:active)
+ # invoke setup with a repository
post :setup, {
- openid_prefix: 'http://www.example.com/account',
- user: {
- email: "foo@example.com"
- }
- }
-
- assert_response :success
- response_items = JSON.parse(@response.body)['items']
- created = find_obj_in_resp response_items, 'User', nil
-
- assert_not_nil created['uuid'], 'expected uuid for new user'
- assert_not_nil created['email'], 'expected non-nil email'
- assert_equal created['email'], 'foo@example.com', 'expected input email'
-
- # three new links: system_group, arvados#user, and 'All users' group.
- verify_num_links @all_links_at_start, 3
-
- verify_link response_items, 'arvados#user', true, 'permission', 'can_login',
- created['uuid'], created['email'], 'arvados#user', false, 'User'
-
- verify_link response_items, 'arvados#group', true, 'permission', 'can_read',
- 'All users', created['uuid'], 'arvados#group', true, 'Group'
-
- verify_link response_items, 'arvados#repository', false, 'permission', 'can_write',
- 'test_repo', created['uuid'], 'arvados#repository', true, 'Repository'
-
- verify_link response_items, 'arvados#virtualMachine', false, 'permission', 'can_login',
- nil, created['uuid'], 'arvados#virtualMachine', false, 'VirtualMachine'
-
- # invoke setup with a repository
- post :setup, {
- openid_prefix: 'http://www.example.com/account',
repo_name: 'new_repo',
- uuid: created['uuid']
+ uuid: active_user['uuid']
}
assert_response :success
response_items = JSON.parse(@response.body)['items']
created = find_obj_in_resp response_items, 'User', nil
- assert_equal 'foo@example.com', created['email'], 'expected input email'
+ assert_equal active_user[:email], created['email'], 'expected input email'
# verify links
verify_link response_items, 'arvados#group', true, 'permission', 'can_read',
'All users', created['uuid'], 'arvados#group', true, 'Group'
- verify_link response_items, 'arvados#repository', true, 'permission', 'can_write',
+ verify_link response_items, 'arvados#repository', true, 'permission', 'can_manage',
'new_repo', created['uuid'], 'arvados#repository', true, 'Repository'
verify_link response_items, 'arvados#virtualMachine', false, 'permission', 'can_login',
nil, created['uuid'], 'arvados#virtualMachine', false, 'VirtualMachine'
-
- # invoke setup with a vm_uuid
- post :setup, {
- vm_uuid: @vm_uuid,
- openid_prefix: 'http://www.example.com/account',
- user: {
- email: 'junk_email'
- },
- uuid: created['uuid']
- }
-
- assert_response :success
-
- response_items = JSON.parse(@response.body)['items']
- created = find_obj_in_resp response_items, 'User', nil
-
- assert_equal created['email'], 'foo@example.com', 'expected original email'
-
- # verify links
- verify_link response_items, 'arvados#group', true, 'permission', 'can_read',
- 'All users', created['uuid'], 'arvados#group', true, 'Group'
-
- # since no repo name in input, we won't get any; even though user has one
- verify_link response_items, 'arvados#repository', false, 'permission', 'can_write',
- 'new_repo', created['uuid'], 'arvados#repository', true, 'Repository'
-
- verify_link response_items, 'arvados#virtualMachine', true, 'permission', 'can_login',
- @vm_uuid, created['uuid'], 'arvados#virtualMachine', false, 'VirtualMachine'
end
- test "setup and unsetup user" do
+ test "setup active user with vm and no repo" do
authorize_with :admin
+ active_user = users(:active)
+ # invoke setup with a repository
post :setup, {
- repo_name: 'test_repo',
vm_uuid: @vm_uuid,
- user: {email: 'foo@example.com'},
- openid_prefix: 'https://www.google.com/accounts/o8/id'
+ uuid: active_user['uuid'],
+ email: 'junk_email'
}
assert_response :success
+
response_items = JSON.parse(@response.body)['items']
created = find_obj_in_resp response_items, 'User', nil
- assert_not_nil created['uuid'], 'expected uuid for the new user'
- assert_equal created['email'], 'foo@example.com', 'expected given email'
- # five extra links: system_group, login, group, repo and vm
- verify_num_links @all_links_at_start, 5
-
- verify_link response_items, 'arvados#user', true, 'permission', 'can_login',
- created['uuid'], created['email'], 'arvados#user', false, 'User'
+ assert_equal active_user['email'], created['email'], 'expected original email'
+ # verify links
verify_link response_items, 'arvados#group', true, 'permission', 'can_read',
'All users', created['uuid'], 'arvados#group', true, 'Group'
- verify_link response_items, 'arvados#repository', true, 'permission', 'can_write',
- 'test_repo', created['uuid'], 'arvados#repository', true, 'Repository'
+ verify_link response_items, 'arvados#repository', false, 'permission', 'can_manage',
+ 'new_repo', created['uuid'], 'arvados#repository', true, 'Repository'
verify_link response_items, 'arvados#virtualMachine', true, 'permission', 'can_login',
@vm_uuid, created['uuid'], 'arvados#virtualMachine', false, 'VirtualMachine'
-
- verify_link_existence created['uuid'], created['email'], true, true, true, true, false
-
- # now unsetup this user
- post :unsetup, id: created['uuid']
- assert_response :success
-
- created2 = JSON.parse(@response.body)
- assert_not_nil created2['uuid'], 'expected uuid for the newly created user'
- assert_equal created['uuid'], created2['uuid'], 'expected uuid not found'
-
- verify_link_existence created['uuid'], created['email'], false, false, false, false, false
end
test "unsetup active user" do
- authorize_with :active
- get :current
- assert_response :success
- active_user = JSON.parse(@response.body)
+ active_user = users(:active)
assert_not_nil active_user['uuid'], 'expected uuid for the active user'
assert active_user['is_active'], 'expected is_active for active user'
- assert active_user['is_invited'], 'expected is_invited for active user'
verify_link_existence active_user['uuid'], active_user['email'],
- false, false, false, true, true
+ false, true, false, true, true
authorize_with :admin
verify_link_existence response_user['uuid'], response_user['email'],
false, false, false, false, false
+
+ active_user = User.find_by_uuid(users(:active).uuid)
+ readable_groups = active_user.groups_i_can(:read)
+ all_users_group = Group.all.collect(&:uuid).select { |g| g.match /-f+$/ }
+ refute_includes(readable_groups, all_users_group,
+ "active user can read All Users group after being deactivated")
+ assert_equal(false, active_user.is_invited,
+ "active user is_invited after being deactivated & reloaded")
end
test "setup user with send notification param false and verify no email" do
'Expected workbench url in email body'
end
- def verify_num_links (original_links, expected_additional_links)
- links_now = Link.all
- assert_equal expected_additional_links, Link.all.size-original_links.size,
- "Expected #{expected_additional_links.inspect} more links"
+ test "non-admin user can get basic information about readable users" do
+ authorize_with :spectator
+ get(:index)
+ check_non_admin_index
+ check_readable_users_index [:spectator], [:inactive, :active]
end
- def find_obj_in_resp (response_items, object_type, head_kind=nil)
- return_obj = nil
- response_items
- response_items.each { |x|
- if !x
- next
- end
+ test "non-admin user gets only safe attributes from users#show" do
+ g = act_as_system_user do
+ create :group
+ end
+ users = create_list :active_user, 2, join_groups: [g]
+ token = create :token, user: users[0]
+ authorize_with_token token
+ get :show, id: users[1].uuid
+ check_non_admin_show
+ end
- if object_type == 'User'
- if ArvadosModel::resource_class_for_uuid(x['uuid']) == User
- return_obj = x
- break
- end
- else # looking for a link
- if x['head_uuid'] and ArvadosModel::resource_class_for_uuid(x['head_uuid']).kind == head_kind
- return_obj = x
- break
- end
+ [2, 4].each do |limit|
+ test "non-admin user can limit index to #{limit}" do
+ g = act_as_system_user do
+ create :group
end
- }
- return return_obj
+ users = create_list :active_user, 4, join_groups: [g]
+ token = create :token, user: users[0]
+
+ authorize_with_token token
+ get(:index, limit: limit)
+ check_non_admin_index
+ assert_equal(limit, json_response["items"].size,
+ "non-admin index limit was ineffective")
+ end
+ end
+
+ test "admin has full index powers" do
+ authorize_with :admin
+ check_inactive_user_findable
+ end
+
+ test "reader token can grant admin index powers" do
+ authorize_with :spectator
+ check_inactive_user_findable(reader_tokens: [api_token(:admin)])
end
- def verify_link(response_items, link_object_name, expect_link, link_class,
- link_name, head_uuid, tail_uuid, head_kind, fetch_object, class_name)
+ test "admin can filter on user.is_active" do
+ authorize_with :admin
+ get(:index, filters: [["is_active", "=", "true"]])
+ assert_response :success
+ check_readable_users_index [:active, :spectator], [:inactive]
+ end
+
+ test "admin can search where user.is_active" do
+ authorize_with :admin
+ get(:index, where: {is_active: true})
+ assert_response :success
+ check_readable_users_index [:active, :spectator], [:inactive]
+ end
- link = find_obj_in_resp response_items, 'Link', link_object_name
+ test "update active_no_prefs user profile and expect notification email" do
+ authorize_with :admin
- if !expect_link
- assert_nil link, "Expected no link for #{link_object_name}"
- return
+ put :update, {
+ id: users(:active_no_prefs).uuid,
+ user: {
+ prefs: {:profile => {'organization' => 'example.com'}}
+ }
+ }
+ assert_response :success
+
+ found_email = false
+ ActionMailer::Base.deliveries.andand.each do |email|
+ if email.subject == "Profile created by #{users(:active_no_prefs).email}"
+ found_email = true
+ break
+ end
end
+ assert_equal true, found_email, 'Expected email after creating profile'
+ end
+
+ test "update active_no_prefs_profile user profile and expect notification email" do
+ authorize_with :admin
- assert_not_nil link, "Expected link for #{link_object_name}"
+ user = {}
+ user[:prefs] = users(:active_no_prefs_profile).prefs
+ user[:prefs][:profile] = {:profile => {'organization' => 'example.com'}}
+ put :update, {
+ id: users(:active_no_prefs_profile).uuid,
+ user: user
+ }
+ assert_response :success
- if fetch_object
- object = Object.const_get(class_name).where(name: head_uuid)
- assert [] != object, "expected #{class_name} with name #{head_uuid}"
- head_uuid = object.first[:uuid]
+ found_email = false
+ ActionMailer::Base.deliveries.andand.each do |email|
+ if email.subject == "Profile created by #{users(:active_no_prefs_profile).email}"
+ found_email = true
+ break
+ end
end
- assert_equal link_class, link['link_class'],
- "did not find expected link_class for #{link_object_name}"
+ assert_equal true, found_email, 'Expected email after creating profile'
+ end
- assert_equal link_name, link['name'],
- "did not find expected link_name for #{link_object_name}"
+ test "update active user profile and expect no notification email" do
+ authorize_with :admin
- assert_equal tail_uuid, link['tail_uuid'],
- "did not find expected tail_uuid for #{link_object_name}"
+ put :update, {
+ id: users(:active).uuid,
+ user: {
+ prefs: {:profile => {'organization' => 'anotherexample.com'}}
+ }
+ }
+ assert_response :success
- assert_equal head_kind, link['head_kind'],
- "did not find expected head_kind for #{link_object_name}"
+ found_email = false
+ ActionMailer::Base.deliveries.andand.each do |email|
+ if email.subject == "Profile created by #{users(:active).email}"
+ found_email = true
+ break
+ end
+ end
+ assert_equal false, found_email, 'Expected no email after updating profile'
+ end
- assert_equal head_uuid, link['head_uuid'],
- "did not find expected head_uuid for #{link_object_name}"
+ test "user API response includes writable_by" do
+ authorize_with :active
+ get :current
+ assert_response :success
+ assert_includes(json_response["writable_by"], users(:active).uuid,
+ "user's writable_by should include self")
+ assert_includes(json_response["writable_by"], users(:active).owner_uuid,
+ "user's writable_by should include its owner_uuid")
end
- def verify_link_existence uuid, email, expect_oid_login_perms,
- expect_repo_perms, expect_vm_perms, expect_group_perms, expect_signatures
- # verify that all links are deleted for the user
- oid_login_perms = Link.where(tail_uuid: email,
- link_class: 'permission',
- name: 'can_login').where("head_uuid like ?", User.uuid_like_pattern)
- if expect_oid_login_perms
- assert oid_login_perms.any?, "expected oid_login_perms"
- else
- assert !oid_login_perms.any?, "expected all oid_login_perms deleted"
- end
- repo_perms = Link.where(tail_uuid: uuid,
- link_class: 'permission',
- name: 'can_write').where("head_uuid like ?", Repository.uuid_like_pattern)
- if expect_repo_perms
- assert repo_perms.any?, "expected repo_perms"
- else
- assert !repo_perms.any?, "expected all repo_perms deleted"
- end
+ NON_ADMIN_USER_DATA = ["uuid", "kind", "is_active", "email", "first_name",
+ "last_name"].sort
- vm_login_perms = Link.where(tail_uuid: uuid,
- link_class: 'permission',
- name: 'can_login').where("head_uuid like ?", VirtualMachine.uuid_like_pattern)
- if expect_vm_perms
- assert vm_login_perms.any?, "expected vm_login_perms"
- else
- assert !vm_login_perms.any?, "expected all vm_login_perms deleted"
+ def check_non_admin_index
+ assert_response :success
+ response_items = json_response["items"]
+ assert_not_nil response_items
+ response_items.each do |user_data|
+ check_non_admin_item user_data
+ assert(user_data["is_active"], "non-admin index returned inactive user")
end
+ end
- group = Group.where(name: 'All users').select do |g|
- g[:uuid].match /-f+$/
- end.first
- group_read_perms = Link.where(tail_uuid: uuid,
- head_uuid: group[:uuid],
- link_class: 'permission',
- name: 'can_read')
- if expect_group_perms
- assert group_read_perms.any?, "expected all users group read perms"
- else
- assert !group_read_perms.any?, "expected all users group perm deleted"
- end
+ def check_non_admin_show
+ assert_response :success
+ check_non_admin_item json_response
+ end
- signed_uuids = Link.where(link_class: 'signature',
- tail_uuid: uuid)
+ def check_non_admin_item user_data
+ assert_equal(NON_ADMIN_USER_DATA, user_data.keys.sort,
+ "data in response had missing or extra attributes")
+ assert_equal("arvados#user", user_data["kind"])
+ end
- if expect_signatures
- assert signed_uuids.any?, "expected signatures"
- else
- assert !signed_uuids.any?, "expected all signatures deleted"
+
+ def check_readable_users_index expect_present, expect_missing
+ response_uuids = json_response["items"].map { |u| u["uuid"] }
+ expect_present.each do |user_key|
+ assert_includes(response_uuids, users(user_key).uuid,
+ "#{user_key} missing from index")
+ end
+ expect_missing.each do |user_key|
+ refute_includes(response_uuids, users(user_key).uuid,
+ "#{user_key} included in index")
end
+ end
+
+ def check_inactive_user_findable(params={})
+ inactive_user = users(:inactive)
+ get(:index, params.merge(filters: [["email", "=", inactive_user.email]]))
+ assert_response :success
+ user_list = json_response["items"]
+ assert_equal(1, user_list.andand.count)
+ # This test needs to check a column non-admins have no access to,
+ # to ensure that admins see all user information.
+ assert_equal(inactive_user.identity_url, user_list.first["identity_url"],
+ "admin's filtered index did not return inactive user")
+ end
+ def verify_num_links (original_links, expected_additional_links)
+ links_now = Link.all
+ assert_equal expected_additional_links, Link.all.size-original_links.size,
+ "Expected #{expected_additional_links.inspect} more links"
end
- def verify_system_group_permission_link_for user_uuid
- assert_equal 1, Link.where(link_class: 'permission',
- name: 'can_manage',
- tail_uuid: system_group_uuid,
- head_uuid: user_uuid).count
+ def find_obj_in_resp (response_items, object_type, head_kind=nil)
+ return_obj = nil
+ response_items
+ response_items.each { |x|
+ if !x
+ next
+ end
+
+ if object_type == 'User'
+ if ArvadosModel::resource_class_for_uuid(x['uuid']) == User
+ return_obj = x
+ break
+ end
+ else # looking for a link
+ if x['head_uuid'] and ArvadosModel::resource_class_for_uuid(x['head_uuid']).kind == head_kind
+ return_obj = x
+ break
+ end
+ end
+ }
+ return return_obj
end
end