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""" Unittest for juju-deployer diff action (--diff) """
# pylint: disable=C0103
from __future__ import absolute_import
import os
import shutil
import tempfile
import unittest
try:
from yaml import CSafeLoader, CSafeDumper
SafeLoader, SafeDumper = CSafeLoader, CSafeDumper
except ImportError:
from yaml import SafeLoader
import yaml
from mock import patch, mock_open
from six import StringIO
from deployer.config import ConfigStack
from deployer.env.mem import MemoryEnvironment
from deployer.utils import setup_logging
from .base import Base, skip_if_offline, TEST_OFFLINE, TEST_OFFLINE_REASON
from ..action.diff import Diff
@skip_if_offline
class DiffTest(Base):
def setUp(self):
self.output = setup_logging(
debug=True, verbose=True, stream=StringIO())
# Because fetch_charms is expensive, do it once for all tests
@classmethod
def setUpClass(cls):
super(DiffTest, cls).setUpClass()
# setUpClass not being skipped, here, could have to do with
# decorator on derived class. So skip explicitly.
if TEST_OFFLINE:
raise unittest.SkipTest(TEST_OFFLINE_REASON)
deployment = ConfigStack(
[os.path.join(
cls.test_data_dir,
"openstack",
"openstack-1501.yaml")]).get('openstack')
cls._dir = tempfile.mkdtemp()
os.mkdir(os.path.join(cls._dir, "trusty"))
deployment.repo_path = cls._dir
deployment.fetch_charms()
deployment.resolve()
cls._deployment = deployment
@classmethod
def tearDownClass(cls):
super(DiffTest, cls).tearDownClass()
# TearDownClass not being skipped, here, could have to do with
# decorator on derived class. So skip explicitly.
if TEST_OFFLINE:
raise unittest.SkipTest(TEST_OFFLINE_REASON)
shutil.rmtree(cls._dir)
@classmethod
def get_dir(cls):
""" Return temp working dir
"""
return cls._dir
@classmethod
def get_deployment(cls):
""" Return saved deployment at class initialization
"""
return cls._deployment
def test_diff_nil(self):
dpl = self.get_deployment()
# No changes, assert nil diff
env = MemoryEnvironment(dpl.name, dpl)
diff = Diff(env, dpl, {}).do_diff()
self.assertEqual(diff, {})
def test_diff_num_units(self):
# Removing 1 unit must show -1 'num_units'
dpl = self.get_deployment()
env = MemoryEnvironment(dpl.name, dpl)
env.remove_unit(env.status()['services']['nova-compute']['units'][0])
diff = Diff(env, dpl, {}).do_diff()
self.assertEqual(
diff['services']['modified']['nova-compute']['num_units'], -1)
# re-adding a unit -> nil diff
env.add_units('nova-compute', 1)
diff = Diff(env, dpl, {}).do_diff()
self.assertEqual(diff, {})
def test_diff_config(self):
dpl = self.get_deployment()
env = MemoryEnvironment(dpl.name, dpl)
# Reconfigure the environment to have an explicit change
# (admin-password), one that differs from the charm
# default (admin-token), and an option that no longer exists in the
# charm (obsolete).
env.set_config(
'keystone',
{'admin-password': 'password', 'admin-user': 'root',
'obsolete': 'for ages'})
diff = Diff(env, dpl, {}).do_diff()
mod_keystone = diff['services']['modified']['keystone']
self.assertEqual(
mod_keystone['env-config'],
{'admin-password': 'password', 'admin-user': 'root',
'obsolete': 'for ages'})
self.assertEqual(
mod_keystone['cfg-config'],
{'admin-password': 'openstack', 'admin-user': 'admin',
'obsolete': None})
def test_diff_constraints(self):
dpl = self.get_deployment()
env = MemoryEnvironment(dpl.name, dpl)
env.set_constraints('nova-compute', 'foo=bar')
diff = Diff(env, dpl, {}).do_diff()
mod_svc = diff['services']['modified']['nova-compute']
self.assertTrue(
mod_svc['env-constraints'] != mod_svc['cfg-constraints'])
self.assertEqual(mod_svc['env-constraints'], {'foo': 'bar'})
def test_diff_env_remove_relation(self):
dpl = self.get_deployment()
env = MemoryEnvironment(dpl.name, dpl)
env.remove_relation('cinder:amqp', 'rabbitmq-server:amqp')
diff = Diff(env, dpl, {}).do_diff()
self.assertEqual(str(diff['relations']['missing']),
'[cinder:amqp <-> rabbitmq-server:amqp]')
def test_diff_env_service_destroy(self):
dpl = self.get_deployment()
env = MemoryEnvironment(dpl.name, dpl)
env.destroy_service('nova-compute')
diff = Diff(env, dpl, {}).do_diff()
self.assertTrue(
str(diff['relations']['missing'][0]).find('nova-compute') != -1)
self.assertEqual(
list(diff['services']['missing'].keys()),
['nova-compute'])
def test_diff_cfg_remove_relation(self):
dpl = self.get_deployment()
# need a tmp file to sneak and save deployment YAML
edited_config_file = os.path.join(self.get_dir(), 'saved.yaml')
dpl.save(edited_config_file)
# in memory edit yaml content
edited_config = yaml.load(open(edited_config_file), Loader=SafeLoader)
edited_config["relations"].remove(
['nova-compute:amqp', 'rabbitmq-server:amqp'])
edited_config = yaml.dump({'openstack': edited_config})
# mock open to inyect edited_config YAML to ConfigStack
with patch('deployer.config.open', mock_open(read_data=edited_config),
create=True):
edited_dpl = ConfigStack("mocked").get('openstack')
edited_dpl.repo_path = self.get_dir()
edited_dpl.fetch_charms()
edited_dpl.resolve()
env = MemoryEnvironment(dpl.name, dpl)
diff = Diff(env, edited_dpl, {}).do_diff()
self.assertTrue(
diff['relations']['unknown'],
'[nova-compute:amqp <-> rabbitmq-server:amqp]')
def test_diff_cfg_remove_ambiguous_relation(self):
dpl = self.get_deployment()
# need a tmp file to sneak and save deployment YAML
edited_config_file = os.path.join(self.get_dir(), 'saved.yaml')
dpl.save(edited_config_file)
# in memory edit yaml content
edited_config = yaml.load(open(edited_config_file), Loader=SafeLoader)
edited_config["relations"].remove(
['ceilometer:identity-service', 'keystone:identity-service'])
edited_config = yaml.dump({'openstack': edited_config})
# mock open to inyect edited_config YAML to ConfigStack
with patch('deployer.config.open', mock_open(read_data=edited_config),
create=True):
edited_dpl = ConfigStack("mocked").get('openstack')
edited_dpl.repo_path = self.get_dir()
edited_dpl.fetch_charms()
edited_dpl.resolve()
env = MemoryEnvironment(dpl.name, dpl)
diff = Diff(env, edited_dpl, {}).do_diff()
# verify ceilometer<->keystone present in unknown relations
self.assertTrue('ceilometer' in str(diff['relations']['unknown']) and
'keystone' in str(diff['relations']['unknown']))
def test_diff_cfg_replace_with_unnamed_relations(self):
dpl = self.get_deployment()
# need a tmp file to sneak and save deployment YAML
edited_config_file = os.path.join(self.get_dir(), 'saved.yaml')
dpl.save(edited_config_file)
# in memory edit yaml content
edited_config = yaml.load(open(edited_config_file), Loader=SafeLoader)
# remove ':name' from service endpoint specification
for relation in edited_config["relations"]:
relation = [(relation[0] + ":").split(":")[0],
(relation[1] + ":").split(":")[0]]
edited_config = yaml.dump({'openstack': edited_config})
# mock open to inyect edited_config YAML to ConfigStack
with patch('deployer.config.open', mock_open(read_data=edited_config),
create=True):
edited_dpl = ConfigStack("mocked").get('openstack')
edited_dpl.repo_path = self.get_dir()
edited_dpl.fetch_charms()
edited_dpl.resolve()
env = MemoryEnvironment(dpl.name, dpl)
diff = Diff(env, edited_dpl, {}).do_diff()
self.assertEqual(diff, {})
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