1 files changed, 72 insertions, 0 deletions
diff --git a/cyborg_enhancement/mitaka_version/cyborg/cyborg/api/controllers/root.py b/cyborg_enhancement/mitaka_version/cyborg/cyborg/api/controllers/root.py
new file mode 100644
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+++ b/cyborg_enhancement/mitaka_version/cyborg/cyborg/api/controllers/root.py
@@ -0,0 +1,72 @@
+# Copyright 2017 Huawei Technologies Co.,LTD.
+# All Rights Reserved.
+#
+#    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 pecan
+from pecan import rest
+from wsme import types as wtypes
+
+from cyborg.api.controllers import base
+from cyborg.api.controllers import v1
+from cyborg.api import expose
+
+
+VERSION1 = 'v1'
+
+
+class Root(base.APIBase):
+    name = wtypes.text
+    """The name of the API"""
+
+    description = wtypes.text
+    """Some information about this API"""
+
+    @staticmethod
+    def convert():
+        root = Root()
+        root.name = 'OpenStack Cyborg API'
+        root.description = (
+            'Cyborg (previously known as Nomad) is an '
+            'OpenStack project that aims to provide a general '
+            'purpose management framework for acceleration '
+            'resources (i.e. various types of accelerators '
+            'such as Crypto cards, GPU, FPGA, NVMe/NOF SSDs, '
+            'ODP, DPDK/SPDK and so on).')
+        return root
+
+
+class RootController(rest.RestController):
+    _versions = [VERSION1]
+    """All supported API versions"""
+
+    _default_version = VERSION1
+    """The default API version"""
+
+    v1 = v1.Controller()
+
+    @expose.expose(Root)
+    def get(self):
+        return Root.convert()
+
+    @pecan.expose()
+    def _route(self, args, request=None):
+        """Overrides the default routing behavior.
+
+        It redirects the request to the default version of the cyborg API
+        if the version number is not specified in the url.
+        """
+
+        if args[0] and args[0] not in self._versions:
+            args = [self._default_version] + args
+        return super(RootController, self)._route(args)