Handle endpoints with versions consistently

When using the cli the Glance client wraps the endpoint in a 'strip
version' function. This means that endpoints of the following forms can
both be used:

https://region-x.images.example.com:443/v1
https://region-x.images.example.com:443

When calling the client library directly (as Ceilometer does) however
only endpoints of the second form work. The cli and library should handle
the two cases consistently.

Addresses bug 1243276.

Change-Id: Ice7b581fee32540a7057ba47433a10166a3caed2

glanceclient/common/utils.py

@@ -17,6 +17,7 @@ from __future__ import print_function
 
 import errno
 import os
+import re
 import sys
 import uuid
 
@@ -315,3 +316,15 @@ def get_data_file(args):
         else:
             # (3) no image data provided
             return None
+
+
+def strip_version(endpoint):
+    """Strip version from the last component of endpoint if present."""
+    # Get rid of trailing '/' if present
+    if endpoint.endswith('/'):
+        endpoint = endpoint[:-1]
+    url_bits = endpoint.split('/')
+    # regex to match 'v1' or 'v2.0' etc
+    if re.match('v\d+\.?\d*', url_bits[-1]):
+        endpoint = '/'.join(url_bits[:-1])
+    return endpoint

glanceclient/shell.py

@@ -24,7 +24,6 @@ import json
 import logging
 import os
 from os.path import expanduser
-import re
 import sys
 
 from keystoneclient.v2_0 import client as ksclient
@@ -306,21 +305,6 @@ class OpenStackImagesShell(object):
                 subparser.add_argument(*args, **kwargs)
             subparser.set_defaults(func=callback)
 
-    # TODO(dtroyer): move this into the common client support?
-    # Compatibility check to remove API version as the trailing component
-    # in a service endpoint; also removes a trailing '/'
-    def _strip_version(self, endpoint):
-        """Strip version from the last component of endpoint if present."""
-
-        # Get rid of trailing '/' if present
-        if endpoint.endswith('/'):
-            endpoint = endpoint[:-1]
-        url_bits = endpoint.split('/')
-        # regex to match 'v1' or 'v2.0' etc
-        if re.match('v\d+\.?\d*', url_bits[-1]):
-            endpoint = '/'.join(url_bits[:-1])
-        return endpoint
-
     def _get_ksclient(self, **kwargs):
         """Get an endpoint and auth token from Keystone.
 
@@ -349,8 +333,7 @@ class OpenStackImagesShell(object):
             endpoint_kwargs['attr'] = 'region'
             endpoint_kwargs['filter_value'] = kwargs.get('region_name')
 
-        endpoint = client.service_catalog.url_for(**endpoint_kwargs)
-        return self._strip_version(endpoint)
+        return client.service_catalog.url_for(**endpoint_kwargs)
 
     def _get_image_url(self, args):
         """Translate the available url-related options into a single string.

glanceclient/v1/client.py

@@ -14,6 +14,7 @@
 #    under the License.
 
 from glanceclient.common import http
+from glanceclient.common import utils
 from glanceclient.v1 import image_members
 from glanceclient.v1 import images
 
@@ -28,8 +29,9 @@ class Client(object):
                             http requests. (optional)
     """
 
-    def __init__(self, *args, **kwargs):
+    def __init__(self, endpoint, *args, **kwargs):
         """Initialize a new client for the Images v1 API."""
-        self.http_client = http.HTTPClient(*args, **kwargs)
+        self.http_client = http.HTTPClient(utils.strip_version(endpoint),
+                                           *args, **kwargs)
         self.images = images.ImageManager(self.http_client)
         self.image_members = image_members.ImageMemberManager(self.http_client)

glanceclient/v2/client.py

@@ -16,6 +16,7 @@
 import warlock
 
 from glanceclient.common import http
+from glanceclient.common import utils
 from glanceclient.v2 import image_members
 from glanceclient.v2 import image_tags
 from glanceclient.v2 import images
@@ -32,8 +33,9 @@ class Client(object):
                             http requests. (optional)
     """
 
-    def __init__(self, *args, **kwargs):
-        self.http_client = http.HTTPClient(*args, **kwargs)
+    def __init__(self, endpoint, *args, **kwargs):
+        self.http_client = http.HTTPClient(utils.strip_version(endpoint),
+                                           *args, **kwargs)
         self.schemas = schemas.Controller(self.http_client)
         image_model = self._get_image_model()
         self.images = images.Controller(self.http_client,