Add masakari openstackclient plugin base

Commit the following implementation
- Implemented to openstackclient plugin base for masakari.
- In the configuration file has been added an entry point for
  the client module initialization.

Change-Id: I8dbee8929480105eb26d938c50e4e512d887c4a8

masakariclient/plugin.py

@@ -0,0 +1,61 @@
+# Copyright(c) 2016 Nippon Telegraph and Telephone Corporation
+#
+# 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.
+
+import logging
+
+from openstack import connection
+from openstack import profile
+from osc_lib import utils
+
+from masakariclient.sdk.vmha import vmha_service
+
+
+LOG = logging.getLogger(__name__)
+
+DEFAULT_VMHA_API_VERSION = '1'
+API_VERSION_OPTION = 'os_vmha_api_version'
+API_NAME = 'vmha'
+API_VERSIONS = {
+    '1': 'masakariclient.client.Client',
+}
+
+
+def make_client(instance):
+    """Returns a vmha proxy"""
+    prof = profile.Profile()
+    prof._add_service(vmha_service.VMHAService(version="v1"))
+    prof.set_region(API_NAME, instance.region_name)
+    prof.set_version(API_NAME, instance._api_version[API_NAME])
+    prof.set_interface(API_NAME, instance.interface)
+    conn = connection.Connection(authenticator=instance.session.auth,
+                                 verify=instance.session.verify,
+                                 cert=instance.session.cert,
+                                 profile=prof)
+    LOG.debug('Connection: %s', conn)
+    LOG.debug('masakari client initialized: %s', conn.vmha)
+    return conn.vmha
+
+
+def build_option_parser(parser):
+    """Hook to add global options"""
+    parser.add_argument(
+        '--os-vmha-api-version',
+        metavar='<vmha-api-version>',
+        default=utils.env(
+            'OS_VMHA_API_VERSION',
+            default=DEFAULT_VMHA_API_VERSION),
+        help='vmha API version, default=' +
+             DEFAULT_VMHA_API_VERSION +
+             ' (Env: OS_VMHA_API_VERSION)')
+    return parser

requirements.txt

@@ -3,5 +3,6 @@
 # process, which may cause wedges in the gate later.
 
 openstacksdk>=0.9.7  # Apache-2.0
+osc-lib>=1.2.0  # Apache-2.0
 oslo.i18n>=2.1.0  # Apache-2.0
 pbr>=1.6 # Apache-2.0

setup.cfg

@@ -23,6 +23,10 @@ classifier =
 packages =
     masakariclient
 
+[entry_points]
+openstack.cli.extension =
+    vmha = masakariclient.plugin
+
 [build_sphinx]
 source-dir = doc/source
 build-dir = doc/build