Add support for basic authentication

Change-Id: I15e8ab531a5e82b211b65da312890579b5498024

doc/source/shell.rst

@@ -41,6 +41,16 @@ in your environment::
   export GNOCCHI_PROJECT_ID=<yourprojectid>
   export GNOCCHI_ENDPOINT=http://urlofgnocchi
 
+Basic authentication
+~~~~~~~~~~~~~~~~~~~~
+
+If you're using Gnocchi with basic authentication, export the following variables
+in your environment::
+
+  export OS_AUTH_TYPE=gnocchi-basic
+  export GNOCCHI_USER=<youruserid>
+  export GNOCCHI_ENDPOINT=http://urlofgnocchi
+
 OpenStack Keystone authentication
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 

gnocchiclient/auth.py

@@ -11,6 +11,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+import base64
 import os
 
 from keystoneauth1 import loading
@@ -80,3 +81,32 @@ class GnocchiNoAuthLoader(loading.BaseLoader):
                        metavar="<gnocchi endpoint>"),
         ])
         return options
+
+
+class GnocchiBasicPlugin(plugin.BaseAuthPlugin):
+    """Basic authentication plugin for Gnocchi."""
+    def __init__(self, user, endpoint):
+        self._user = user.encode('utf-8')
+        self._endpoint = endpoint
+
+    def get_headers(self, session, **kwargs):
+        return {'Authorization':
+                b"basic " + base64.b64encode(self._user + b":")}
+
+    def get_endpoint(self, session, **kwargs):
+        return self._endpoint
+
+
+class GnocchiBasicLoader(loading.BaseLoader):
+    plugin_class = GnocchiBasicPlugin
+
+    def get_options(self):
+        options = super(GnocchiBasicLoader, self).get_options()
+        options.extend([
+            GnocchiOpt('user', help='User', required=True,
+                       metavar="<gnocchi user>"),
+            GnocchiOpt('endpoint', help='Gnocchi endpoint',
+                       dest="endpoint", required=True,
+                       metavar="<gnocchi endpoint>"),
+        ])
+        return options

gnocchiclient/shell.py

@@ -23,9 +23,9 @@ from cliff import commandmanager
 from keystoneauth1 import exceptions
 from keystoneauth1 import loading
 
+from gnocchiclient import auth
 from gnocchiclient import benchmark
 from gnocchiclient import client
-from gnocchiclient import noauth
 from gnocchiclient.v1 import archive_policy_cli
 from gnocchiclient.v1 import archive_policy_rule_cli as ap_rule_cli
 from gnocchiclient.v1 import capabilities_cli
@@ -134,7 +134,8 @@ class GnocchiShell(app.App):
         plugin = loading.register_auth_argparse_arguments(
             parser=parser, argv=sys.argv, default="password")
 
-        if not isinstance(plugin, noauth.GnocchiNoAuthLoader):
+        if not isinstance(plugin, (auth.GnocchiNoAuthLoader,
+                                   auth.GnocchiBasicLoader)):
             parser.add_argument(
                 '--endpoint',
                 default=os.environ.get('GNOCCHI_ENDPOINT'),

setup.cfg

@@ -28,7 +28,8 @@ console_scripts =
     gnocchi = gnocchiclient.shell:main
 
 keystoneauth1.plugin =
-    gnocchi-noauth = gnocchiclient.noauth:GnocchiNoAuthLoader
+    gnocchi-noauth = gnocchiclient.auth:GnocchiNoAuthLoader
+    gnocchi-basic = gnocchiclient.auth:GnocchiBasicLoader
 
 openstack.cli.extension =
     metric = gnocchiclient.osc