Fix Swift endpoint conversion to determine info/caps url

This adds some robustness and flexibility converting the Swift endpoint
URL from the registry to the one exposing the info / capabilities.
Additionally some unit tests were added to ensure different use-cases
and URL patterns are covered.

Story: 2010898
Task: 48689
Related-Bug: #1712358

Change-Id: I321ae9375d16e21771ee9d9bce1c61f85627c879

openstack/object_store/v1/info.py

@@ -11,10 +11,12 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
+import re
 import urllib
 
 from openstack import exceptions
 from openstack import resource
+from openstack import utils
 
 
 class Info(resource.Resource):
@@ -32,6 +34,24 @@ class Info(resource.Resource):
     staticweb = resource.Body("staticweb", type=dict)
     tempurl = resource.Body("tempurl", type=dict)
 
+    # The endpoint in the catalog has version and project-id in it
+    # To get capabilities, we have to disassemble and reassemble the URL
+    # to append 'info'
+    # This logic is taken from swiftclient
+    def _get_info_url(self, url):
+        URI_PATTERN_VERSION = re.compile(r'\/v\d+\.?\d*(\/.*)?')
+        scheme, netloc, path, params, query, fragment = urllib.parse.urlparse(
+            url
+        )
+        if URI_PATTERN_VERSION.search(path):
+            path = URI_PATTERN_VERSION.sub('/info', path)
+        else:
+            path = utils.urljoin(path, 'info')
+
+        return urllib.parse.urlunparse(
+            (scheme, netloc, path, params, query, fragment)
+        )
+
     def fetch(
         self,
         session,
@@ -60,18 +80,11 @@ class Info(resource.Resource):
         if not self.allow_fetch:
             raise exceptions.MethodNotSupported(self, "fetch")
 
-        # The endpoint in the catalog has version and project-id in it
-        # To get capabilities, we have to disassemble and reassemble the URL
-        # This logic is taken from swiftclient
-
         session = self._get_session(session)
-        endpoint = urllib.parse.urlparse(session.get_endpoint())
+        info_url = self._get_info_url(session.get_endpoint())
-        url = "{scheme}://{netloc}/info".format(
-            scheme=endpoint.scheme, netloc=endpoint.netloc
-        )
 
         microversion = self._get_microversion(session, action='fetch')
-        response = session.get(url, microversion=microversion)
+        response = session.get(info_url, microversion=microversion)
         kwargs = {}
         if error_message:
             kwargs['error_message'] = error_message

openstack/tests/unit/object_store/v1/test_info.py

@@ -0,0 +1,44 @@
+# 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 openstack.object_store.v1 import info
+from openstack.tests.unit import base
+
+
+class TestInfo(base.TestCase):
+    def setUp(self):
+        super(TestInfo, self).setUp()
+
+    def test_get_info_url(self):
+        sot = info.Info()
+        test_urls = {
+            'http://object.cloud.example.com': 'http://object.cloud.example.com/info',
+            'http://object.cloud.example.com/': 'http://object.cloud.example.com/info',
+            'http://object.cloud.example.com/v1': 'http://object.cloud.example.com/info',
+            'http://object.cloud.example.com/v1/': 'http://object.cloud.example.com/info',
+            'http://object.cloud.example.com/swift': 'http://object.cloud.example.com/swift/info',
+            'http://object.cloud.example.com/swift/': 'http://object.cloud.example.com/swift/info',
+            'http://object.cloud.example.com/v1.0': 'http://object.cloud.example.com/info',
+            'http://object.cloud.example.com/swift/v1.0': 'http://object.cloud.example.com/swift/info',
+            'http://object.cloud.example.com/v111': 'http://object.cloud.example.com/info',
+            'http://object.cloud.example.com/v111/test': 'http://object.cloud.example.com/info',
+            'http://object.cloud.example.com/v1/test': 'http://object.cloud.example.com/info',
+            'http://object.cloud.example.com/swift/v1.0/test': 'http://object.cloud.example.com/swift/info',
+            'http://object.cloud.example.com/v1.0/test': 'http://object.cloud.example.com/info',
+            'https://object.cloud.example.com/swift/v1/AUTH_%(tenant_id)s': 'https://object.cloud.example.com/swift/info',
+            'https://object.cloud.example.com/swift/v1/AUTH_%(project_id)s': 'https://object.cloud.example.com/swift/info',
+            'https://object.cloud.example.com/services/swift/v1/AUTH_%(project_id)s': 'https://object.cloud.example.com/services/swift/info',
+            'https://object.cloud.example.com/services/swift/v1/AUTH_%(project_id)s/': 'https://object.cloud.example.com/services/swift/info',
+            'https://object.cloud.example.com/info/v1/AUTH_%(project_id)s/': 'https://object.cloud.example.com/info/info',
+        }
+        for uri_k, uri_v in test_urls.items():
+            self.assertEqual(sot._get_info_url(uri_k), uri_v)

releasenotes/notes/bug-2010898-430da335e4df0efe.yaml

@@ -0,0 +1,5 @@
+---
+fixes:
+  - |
+    [`bug 2010898 <https://storyboard.openstack.org/#!/story/2010898>`_]
+    Fix Swift endpoint url handling to determine info/caps url