Check context before returning cached value
The key manager caches the value of barbican client to be reused,
saving an extra call to keystone. The cached value is only
applicable to the current context, so the context must be checked
before returning the cached value.
Closes-Bug: #1523646
Change-Id: I7cd7f1ba8a749b230c611e4fb20ccf4127354c35
(cherry picked from commit 676a53ce44
)
This commit is contained in:
parent
2da1d8ba76
commit
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@ -62,6 +62,7 @@ class BarbicanKeyManager(key_mgr.KeyManager):
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def __init__(self):
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self._barbican_client = None
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self._current_context = None
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self._base_url = None
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def _get_barbican_client(self, ctxt):
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@ -72,47 +73,56 @@ class BarbicanKeyManager(key_mgr.KeyManager):
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:raises Forbidden: if the ctxt is None
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"""
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if not self._barbican_client:
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# Confirm context is provided, if not raise forbidden
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if not ctxt:
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msg = _("User is not authorized to use key manager.")
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LOG.error(msg)
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raise exception.Forbidden(msg)
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# Confirm context is provided, if not raise forbidden
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if not ctxt:
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msg = _("User is not authorized to use key manager.")
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LOG.error(msg)
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raise exception.Forbidden(msg)
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try:
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_SESSION = session.Session.load_from_conf_options(
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CONF,
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BARBICAN_OPT_GROUP)
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if not hasattr(ctxt, 'project_id') or ctxt.project_id is None:
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msg = _("Unable to create Barbican Client without project_id.")
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LOG.error(msg)
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raise exception.KeyManagerError(msg)
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auth = ctxt.get_auth_plugin()
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service_type, service_name, interface = (CONF.
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barbican.
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catalog_info.
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split(':'))
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region_name = CONF.barbican.os_region_name
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service_parameters = {'service_type': service_type,
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'service_name': service_name,
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'interface': interface,
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'region_name': region_name}
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# If same context, return cached barbican client
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if self._barbican_client and self._current_context == ctxt:
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return self._barbican_client
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if CONF.barbican.endpoint_template:
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self._base_url = (CONF.barbican.endpoint_template %
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ctxt.to_dict())
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else:
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self._base_url = _SESSION.get_endpoint(
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auth, **service_parameters)
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try:
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_SESSION = session.Session.load_from_conf_options(
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CONF,
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BARBICAN_OPT_GROUP)
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# the barbican endpoint can't have the '/v1' on the end
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self._barbican_endpoint = self._base_url.rpartition('/')[0]
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auth = ctxt.get_auth_plugin()
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service_type, service_name, interface = (CONF.
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barbican.
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catalog_info.
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split(':'))
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region_name = CONF.barbican.os_region_name
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service_parameters = {'service_type': service_type,
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'service_name': service_name,
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'interface': interface,
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'region_name': region_name}
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sess = session.Session(auth=auth)
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self._barbican_client = barbican_client.Client(
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session=sess,
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endpoint=self._barbican_endpoint)
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if CONF.barbican.endpoint_template:
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self._base_url = (CONF.barbican.endpoint_template %
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ctxt.to_dict())
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else:
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self._base_url = _SESSION.get_endpoint(
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auth, **service_parameters)
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except Exception as e:
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with excutils.save_and_reraise_exception():
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LOG.error(_LE("Error creating Barbican client: %s"), e)
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# the barbican endpoint can't have the '/v1' on the end
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self._barbican_endpoint = self._base_url.rpartition('/')[0]
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sess = session.Session(auth=auth)
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self._barbican_client = barbican_client.Client(
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session=sess,
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endpoint=self._barbican_endpoint)
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self._current_context = ctxt
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except Exception as e:
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with excutils.save_and_reraise_exception():
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LOG.error(_LE("Error creating Barbican client: %s"), e)
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return self._barbican_client
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@ -37,8 +37,9 @@ class BarbicanKeyManagerTestCase(test_key_mgr.KeyManagerTestCase):
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super(BarbicanKeyManagerTestCase, self).setUp()
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# Create fake auth_token
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self.ctxt = mock.Mock()
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self.ctxt = mock.MagicMock()
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self.ctxt.auth_token = "fake_token"
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self.ctxt.project = "fake_project"
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# Create mock barbican client
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self._build_mock_barbican()
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@ -49,6 +50,7 @@ class BarbicanKeyManagerTestCase(test_key_mgr.KeyManagerTestCase):
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self.pre_hex = "AIDxQp2++uAbKaTVDMXFYIu8PIugJGqkK0JLqkU0rhY="
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self.hex = ("0080f1429dbefae01b29a4d50cc5c5608bbc3c8ba0246aa42b424baa4"
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"534ae16")
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self.key_mgr._current_context = self.ctxt
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self.key_mgr._base_url = "http://host:9311/v1"
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self.addCleanup(self._restore)
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@ -221,3 +223,51 @@ class BarbicanKeyManagerTestCase(test_key_mgr.KeyManagerTestCase):
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self.key_mgr._barbican_client = None
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self.assertRaises(exception.Forbidden,
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self.key_mgr.store_key, None, None)
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@mock.patch('keystoneclient.session.Session')
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@mock.patch('barbicanclient.client.Client')
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def test_get_barbican_client_new(self, mock_barbican, mock_keystone):
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manager = self._create_key_manager()
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manager._get_barbican_client(self.ctxt)
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self.assertEqual(mock_keystone.call_count, 1)
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self.assertEqual(mock_barbican.call_count, 1)
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@mock.patch('keystoneclient.session.Session')
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@mock.patch('barbicanclient.client.Client')
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def test_get_barbican_client_reused(self, mock_barbican, mock_keystone):
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manager = self._create_key_manager()
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manager._get_barbican_client(self.ctxt)
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self.assertEqual(mock_keystone.call_count, 1)
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self.assertEqual(mock_barbican.call_count, 1)
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manager._get_barbican_client(self.ctxt)
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self.assertEqual(mock_keystone.call_count, 1)
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self.assertEqual(mock_barbican.call_count, 1)
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@mock.patch('keystoneclient.session.Session')
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@mock.patch('barbicanclient.client.Client')
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def test_get_barbican_client_not_reused(self, mock_barbican,
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mock_keystone):
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manager = self._create_key_manager()
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manager._get_barbican_client(self.ctxt)
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self.assertEqual(mock_keystone.call_count, 1)
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self.assertEqual(mock_barbican.call_count, 1)
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ctxt2 = mock.MagicMock()
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ctxt2.auth_token = "fake_token2"
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ctxt2.project = "fake_project2"
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manager._get_barbican_client(ctxt2)
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self.assertEqual(mock_keystone.call_count, 2)
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self.assertEqual(mock_barbican.call_count, 2)
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def test_get_barbican_client_null_context(self):
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self.assertRaises(exception.Forbidden,
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self.key_mgr._get_barbican_client, None)
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def test_get_barbican_client_missing_project(self):
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del(self.ctxt.project_id)
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self.assertRaises(exception.KeyManagerError,
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self.key_mgr._get_barbican_client, self.ctxt)
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def test_get_barbican_client_none_project(self):
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self.ctxt.project_id = None
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self.assertRaises(exception.KeyManagerError,
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self.key_mgr._get_barbican_client, self.ctxt)
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