Merge "Make the single entrypoint for client"

savannaclient/client.py

@@ -0,0 +1,45 @@
+# Copyright (c) 2014 Mirantis Inc.
+#
+# 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 savannaclient.openstack.common import importutils
+
+
+class UnsupportedVersion(Exception):
+    """Indicates that the user is trying to use an unsupported
+    version of the API.
+    """
+    pass
+
+
+def get_client_class(version):
+    version_map = {
+        '1.0': 'savannaclient.api.client.Client',
+        '1.1': 'savannaclient.api.client.Client',
+    }
+    try:
+        client_path = version_map[str(version)]
+    except (KeyError, ValueError):
+        supported_versions = ''.join(version_map.keys())
+        msg = ("Invalid client version '%(version)s'; must be one of: "
+               "%(versions)s") % {'version': version,
+                                  'versions': supported_versions}
+        raise UnsupportedVersion(msg)
+
+    return importutils.import_class(client_path)
+
+
+def Client(version, *args, **kwargs):
+    client_class = get_client_class(version)
+    return client_class(*args, **kwargs)