Init smaug client for smaug-dashboard

We will change it to python-smaugclient after the requirements patch has been merged.
https://review.openstack.org/#/c/302512/
This patch may take some time because it is the release time of OpenStack now.
But we could use the python-smaugclient master to avoid the CI error in development.

Change-Id: Ic04ff306752d70766a86f319c3d006264362545c
Closes-Bug: #1557889

smaug_dashboard/api/smaug.py

@@ -0,0 +1,55 @@
+#    Copyright (c) 2016 Huawei, Inc.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+from __future__ import absolute_import
+import logging
+import six.moves.urllib.parse as urlparse
+
+from django.conf import settings
+from horizon import exceptions
+from horizon.utils.memoized import memoized
+from openstack_dashboard.api import base
+from smaugclient.v1 import client as smaug_client
+
+LOG = logging.getLogger(__name__)
+
+
+def get_smaug_endpoint(request):
+    endpoint = ""
+    try:
+        endpoint = base.url_for(request, "data-protect")
+        parts = urlparse.urlparse(endpoint)
+        if parts.scheme and parts.netloc:
+            endpoint = '%s://%s' % (parts.scheme, parts.netloc)
+    except exceptions.ServiceCatalogException:
+        endpoint = 'http://localhost:8799'
+        LOG.warning('Smaug API location could not be found in Service '
+                    'Catalog, using default: {0}'.format(endpoint))
+    return endpoint
+
+
+@memoized
+def smaugclient(request):
+    endpoint = get_smaug_endpoint(request)
+    LOG.debug('smaugclient connection created using the token "%s" and url'
+              '"%s"' % (request.user.token.id, endpoint))
+    c = smaug_client.Client(endpoint=endpoint,
+                            auth_url=getattr(settings,
+                                             'OPENSTACK_KEYSTONE_URL'),
+                            token=request.user.token.id,
+                            username=request.user.username,
+                            project_id=request.user.tenant_id,
+                            auth_plugin='token',
+                            )
+    return c

test-requirements.txt

@@ -26,3 +26,8 @@ testtools>=1.4.0  # MIT
 xvfbwrapper>=0.1.3 #license: MIT
 # Include horizon as test requirement
 http://tarballs.openstack.org/horizon/horizon-master.tar.gz#egg=horizon
+# We will change it to python-smaugclient after the requirements patch has been merged.
+# https://review.openstack.org/#/c/302512/
+# This patch may take some time because it is the release time of OpenStack now.
+# But we could use the python-smaugclient master to avoid the CI error in development.
+http://tarballs.openstack.org/python-smaugclient/python-smaugclient-master.tar.gz#egg=python-smaugclient