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# Copyright (C) 2014 Vaidas Jablonskis
#
# Author: Vaidas Jablonskis <jablonskis@gmail.com>
#
# This file is part of cloud-init. See LICENSE file for license information.
import httpretty
import mock
import re
from base64 import b64encode, b64decode
from six.moves.urllib_parse import urlparse
from cloudinit import helpers
from cloudinit import settings
from cloudinit.sources import DataSourceGCE
from cloudinit.tests import helpers as test_helpers
GCE_META = {
'instance/id': '123',
'instance/zone': 'foo/bar',
'project/attributes/sshKeys': 'user:ssh-rsa AA2..+aRD0fyVw== root@server',
'instance/hostname': 'server.project-foo.local',
'instance/attributes/user-data': b'/bin/echo foo\n',
}
GCE_META_PARTIAL = {
'instance/id': '1234',
'instance/hostname': 'server.project-bar.local',
'instance/zone': 'bar/baz',
}
GCE_META_ENCODING = {
'instance/id': '12345',
'instance/hostname': 'server.project-baz.local',
'instance/zone': 'baz/bang',
'instance/attributes/user-data': b64encode(b'/bin/echo baz\n'),
'instance/attributes/user-data-encoding': 'base64',
}
HEADERS = {'X-Google-Metadata-Request': 'True'}
MD_URL_RE = re.compile(
r'http://metadata.google.internal/computeMetadata/v1/.*')
def _set_mock_metadata(gce_meta=None):
if gce_meta is None:
gce_meta = GCE_META
def _request_callback(method, uri, headers):
url_path = urlparse(uri).path
if url_path.startswith('/computeMetadata/v1/'):
path = url_path.split('/computeMetadata/v1/')[1:][0]
else:
path = None
if path in gce_meta:
return (200, headers, gce_meta.get(path))
else:
return (404, headers, '')
# reset is needed. https://github.com/gabrielfalcao/HTTPretty/issues/316
httpretty.reset()
httpretty.register_uri(httpretty.GET, MD_URL_RE, body=_request_callback)
@httpretty.activate
class TestDataSourceGCE(test_helpers.HttprettyTestCase):
def setUp(self):
self.ds = DataSourceGCE.DataSourceGCE(
settings.CFG_BUILTIN, None,
helpers.Paths({}))
ppatch = self.m_platform_reports_gce = mock.patch(
'cloudinit.sources.DataSourceGCE.platform_reports_gce')
self.m_platform_reports_gce = ppatch.start()
self.m_platform_reports_gce.return_value = True
self.addCleanup(ppatch.stop)
super(TestDataSourceGCE, self).setUp()
def test_connection(self):
_set_mock_metadata()
success = self.ds.get_data()
self.assertTrue(success)
req_header = httpretty.last_request().headers
self.assertDictContainsSubset(HEADERS, req_header)
def test_metadata(self):
_set_mock_metadata()
self.ds.get_data()
shostname = GCE_META.get('instance/hostname').split('.')[0]
self.assertEqual(shostname,
self.ds.get_hostname())
self.assertEqual(GCE_META.get('instance/id'),
self.ds.get_instance_id())
self.assertEqual(GCE_META.get('instance/attributes/user-data'),
self.ds.get_userdata_raw())
# test partial metadata (missing user-data in particular)
def test_metadata_partial(self):
_set_mock_metadata(GCE_META_PARTIAL)
self.ds.get_data()
self.assertEqual(GCE_META_PARTIAL.get('instance/id'),
self.ds.get_instance_id())
shostname = GCE_META_PARTIAL.get('instance/hostname').split('.')[0]
self.assertEqual(shostname, self.ds.get_hostname())
def test_metadata_encoding(self):
_set_mock_metadata(GCE_META_ENCODING)
self.ds.get_data()
decoded = b64decode(
GCE_META_ENCODING.get('instance/attributes/user-data'))
self.assertEqual(decoded, self.ds.get_userdata_raw())
def test_missing_required_keys_return_false(self):
for required_key in ['instance/id', 'instance/zone',
'instance/hostname']:
meta = GCE_META_PARTIAL.copy()
del meta[required_key]
_set_mock_metadata(meta)
self.assertEqual(False, self.ds.get_data())
httpretty.reset()
def test_project_level_ssh_keys_are_used(self):
_set_mock_metadata()
self.ds.get_data()
# we expect a list of public ssh keys with user names stripped
self.assertEqual(['ssh-rsa AA2..+aRD0fyVw== root@server'],
self.ds.get_public_ssh_keys())
def test_instance_level_ssh_keys_are_used(self):
key_content = 'ssh-rsa JustAUser root@server'
meta = GCE_META.copy()
meta['instance/attributes/ssh-keys'] = 'user:{0}'.format(key_content)
_set_mock_metadata(meta)
self.ds.get_data()
self.assertIn(key_content, self.ds.get_public_ssh_keys())
def test_instance_level_keys_replace_project_level_keys(self):
key_content = 'ssh-rsa JustAUser root@server'
meta = GCE_META.copy()
meta['instance/attributes/ssh-keys'] = 'user:{0}'.format(key_content)
_set_mock_metadata(meta)
self.ds.get_data()
self.assertEqual([key_content], self.ds.get_public_ssh_keys())
def test_only_last_part_of_zone_used_for_availability_zone(self):
_set_mock_metadata()
r = self.ds.get_data()
self.assertEqual(True, r)
self.assertEqual('bar', self.ds.availability_zone)
@mock.patch("cloudinit.sources.DataSourceGCE.GoogleMetadataFetcher")
def test_get_data_returns_false_if_not_on_gce(self, m_fetcher):
self.m_platform_reports_gce.return_value = False
ret = self.ds.get_data()
self.assertEqual(False, ret)
m_fetcher.assert_not_called()
# vi: ts=4 expandtab
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