Allow setting endpoint_type for glance

currently Manila always uses public endpoint of Glance, which
may not be possible in certain deployment scenarios.

Change-Id: Ic17ac43160092445ec11ada41c0eb6eaf525b6d0
Closes-Bug: #1991396
(cherry picked from commit 111104b9a2)

manila/image/glance.py

@@ -35,6 +35,9 @@ glance_opts = [
     cfg.StrOpt('region_name',
                default='RegionOne',
                help='Region name for connecting to glance.'),
+    cfg.StrOpt('endpoint_type',
+               default='publicURL',
+               help='Endpoint type to be used with glance client calls.'),
     ]
 
 CONF = cfg.CONF
@@ -55,6 +58,7 @@ def glanceclient(context):
             client_class=glance_client.Client, cfg_group=GLANCE_GROUP)
     return AUTH_OBJ.get_client(context,
                                version=CONF[GLANCE_GROUP].api_microversion,
+                               interface=CONF[GLANCE_GROUP].endpoint_type,
                                region_name=CONF[GLANCE_GROUP].region_name)
 
 

manila/tests/image/test_image.py

@@ -49,6 +49,7 @@ class GlanceClientTestCase(test.TestCase):
         data = {
             'glance': {
                 'api_microversion': 'foo_api_microversion',
+                'endpoint_type': 'internal',
                 'region_name': 'foo_region_name'
             }
         }
@@ -63,6 +64,7 @@ class GlanceClientTestCase(test.TestCase):
         mock_client_loader.return_value.get_client.assert_called_once_with(
             fake_context,
             version=data['glance']['api_microversion'],
+            interface=data['glance']['endpoint_type'],
             region_name=data['glance']['region_name']
         )
 
@@ -72,6 +74,7 @@ class GlanceClientTestCase(test.TestCase):
         data = {
             'glance': {
                 'api_microversion': 'foo_api_microversion',
+                'endpoint_type': 'internal',
                 'region_name': 'foo_region_name'
             }
         }
@@ -82,6 +85,7 @@ class GlanceClientTestCase(test.TestCase):
         glance.AUTH_OBJ.get_client.assert_called_once_with(
             fake_context,
             version=data['glance']['api_microversion'],
+            interface=data['glance']['endpoint_type'],
             region_name=data['glance']['region_name']
         )
 

releasenotes/notes/bug-1991396-add-glance-endpoint-type-151777f255e423a3.yaml

@@ -0,0 +1,7 @@
+---
+fixes:
+  - |
+    Deployers now can specify ``[glance]endpoint_type`` configuration option
+    (defaults to ``publicURL`` for backward compatibility)
+    so that Manila uses Glance endpoint other than the public one
+    (see `bug 1991396 <https://bugs.launchpad.net/manila/+bug/1991396>`_).