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from copy import copy
import os
import shutil
import tempfile
from cloudinit.sources import DataSourceMAAS
from cloudinit import url_helper
from ..helpers import TestCase, populate_dir
try:
from unittest import mock
except ImportError:
import mock
class TestMAASDataSource(TestCase):
def setUp(self):
super(TestMAASDataSource, self).setUp()
# Make a temp directoy for tests to use.
self.tmp = tempfile.mkdtemp()
self.addCleanup(shutil.rmtree, self.tmp)
def test_seed_dir_valid(self):
"""Verify a valid seeddir is read as such."""
data = {'instance-id': 'i-valid01',
'local-hostname': 'valid01-hostname',
'user-data': b'valid01-userdata',
'public-keys': 'ssh-rsa AAAAB3Nz...aC1yc2E= keyname'}
my_d = os.path.join(self.tmp, "valid")
populate_dir(my_d, data)
(userdata, metadata) = DataSourceMAAS.read_maas_seed_dir(my_d)
self.assertEqual(userdata, data['user-data'])
for key in ('instance-id', 'local-hostname'):
self.assertEqual(data[key], metadata[key])
# verify that 'userdata' is not returned as part of the metadata
self.assertFalse(('user-data' in metadata))
def test_seed_dir_valid_extra(self):
"""Verify extra files do not affect seed_dir validity."""
data = {'instance-id': 'i-valid-extra',
'local-hostname': 'valid-extra-hostname',
'user-data': b'valid-extra-userdata', 'foo': 'bar'}
my_d = os.path.join(self.tmp, "valid_extra")
populate_dir(my_d, data)
(userdata, metadata) = DataSourceMAAS.read_maas_seed_dir(my_d)
self.assertEqual(userdata, data['user-data'])
for key in ('instance-id', 'local-hostname'):
self.assertEqual(data[key], metadata[key])
# additional files should not just appear as keys in metadata atm
self.assertFalse(('foo' in metadata))
def test_seed_dir_invalid(self):
"""Verify that invalid seed_dir raises MAASSeedDirMalformed."""
valid = {'instance-id': 'i-instanceid',
'local-hostname': 'test-hostname', 'user-data': ''}
my_based = os.path.join(self.tmp, "valid_extra")
# missing 'userdata' file
my_d = "%s-01" % my_based
invalid_data = copy(valid)
del invalid_data['local-hostname']
populate_dir(my_d, invalid_data)
self.assertRaises(DataSourceMAAS.MAASSeedDirMalformed,
DataSourceMAAS.read_maas_seed_dir, my_d)
# missing 'instance-id'
my_d = "%s-02" % my_based
invalid_data = copy(valid)
del invalid_data['instance-id']
populate_dir(my_d, invalid_data)
self.assertRaises(DataSourceMAAS.MAASSeedDirMalformed,
DataSourceMAAS.read_maas_seed_dir, my_d)
def test_seed_dir_none(self):
"""Verify that empty seed_dir raises MAASSeedDirNone."""
my_d = os.path.join(self.tmp, "valid_empty")
self.assertRaises(DataSourceMAAS.MAASSeedDirNone,
DataSourceMAAS.read_maas_seed_dir, my_d)
def test_seed_dir_missing(self):
"""Verify that missing seed_dir raises MAASSeedDirNone."""
self.assertRaises(DataSourceMAAS.MAASSeedDirNone,
DataSourceMAAS.read_maas_seed_dir,
os.path.join(self.tmp, "nonexistantdirectory"))
def test_seed_url_valid(self):
"""Verify that valid seed_url is read as such."""
valid = {
'meta-data/instance-id': 'i-instanceid',
'meta-data/local-hostname': 'test-hostname',
'meta-data/public-keys': 'test-hostname',
'user-data': b'foodata',
}
valid_order = [
'meta-data/local-hostname',
'meta-data/instance-id',
'meta-data/public-keys',
'user-data',
]
my_seed = "http://example.com/xmeta"
my_ver = "1999-99-99"
my_headers = {'header1': 'value1', 'header2': 'value2'}
def my_headers_cb(url):
return my_headers
# Each time url_helper.readurl() is called, something different is
# returned based on the canned data above. We need to build up a list
# of side effect return values, which the mock will return. At the
# same time, we'll build up a list of expected call arguments for
# asserting after the code under test is run.
calls = []
def side_effect():
for key in valid_order:
resp = valid.get(key)
url = "%s/%s/%s" % (my_seed, my_ver, key)
calls.append(
mock.call(url, headers=None, timeout=mock.ANY,
data=mock.ANY, sec_between=mock.ANY,
ssl_details=mock.ANY, retries=mock.ANY,
headers_cb=my_headers_cb,
exception_cb=mock.ANY))
yield url_helper.StringResponse(resp)
# Now do the actual call of the code under test.
with mock.patch.object(url_helper, 'readurl',
side_effect=side_effect()) as mockobj:
userdata, metadata = DataSourceMAAS.read_maas_seed_url(
my_seed, version=my_ver)
self.assertEqual(b"foodata", userdata)
self.assertEqual(metadata['instance-id'],
valid['meta-data/instance-id'])
self.assertEqual(metadata['local-hostname'],
valid['meta-data/local-hostname'])
mockobj.has_calls(calls)
def test_seed_url_invalid(self):
"""Verify that invalid seed_url raises MAASSeedDirMalformed."""
pass
def test_seed_url_missing(self):
"""Verify seed_url with no found entries raises MAASSeedDirNone."""
pass
# vi: ts=4 expandtab
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