Add basic structures of libnetwork remote driver

This patch adds the basic URI endpoints required by libnetwork to
satisfy libnetwork's remote driver APIs. Currently handlers respond with
the mock JSON.

Change-Id: I6cb5295c5f9f4ce1899267bcb38fd35add5845d6
Signed-off-by: Taku Fukushima <f.tac.mac@gmail.com>

kuryr/__init__.py

@@ -18,3 +18,5 @@ from kuryr.utils import make_json_app
 app = make_json_app(__name__)
 app.logger.addHandler(logging.StreamHandler(sys.stdout))
 app.logger.setLevel(logging.INFO)
+
+from kuryr.controllers import app  # noqa

kuryr/controllers.py

@@ -0,0 +1,85 @@
+# 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 flask import jsonify
+
+from kuryr import app
+
+
+# NEXTHOP indicates a StaticRoute with an IP next hop.
+NEXTHOP = 0
+# CONNECTED indicates a StaticRoute with a interface for directly connected
+# peers.
+CONNECTED = 1
+
+
+@app.route('/Plugin.Activate', methods=['POST'])
+def plubin_activate():
+    return jsonify({"Implements": ["NetworkDriver"]})
+
+
+@app.route('/NetworkDriver.CreateNetwork', methods=['POST'])
+def network_driver_create_network():
+    return jsonify({})
+
+
+@app.route('/NetworkDriver.DeleteNetwork', methods=['POST'])
+def network_driver_delete_network():
+    return jsonify({})
+
+
+@app.route('/NetworkDriver.CreateEndpoint', methods=['POST'])
+def network_driver_create_endpoint():
+    # TODO(tfukushima): This is mocked and should be replaced with real data.
+    return jsonify({
+        "Interfaces": [{
+            "ID": 1,
+            "Address": "192.168.1.42/24",
+            "AddressIPv6": "fe80::f816:3eff:fe20:57c3/64",
+            "MacAddress": "fa:16:3e:20:57:c3",
+        }]
+    })
+
+
+@app.route('/NetworkDriver.EndpointOperInfo', methods=['POST'])
+def network_driver_endpoint_operational_info():
+    # TODO(tfukushima): This is mocked and should be replaced with real data.
+    return jsonify({"Value": {}})
+
+
+@app.route('/NetworkDriver.DeleteEndpoint', methods=['POST'])
+def network_driver_delete_endpoint():
+    return jsonify({})
+
+
+@app.route('/NetworkDriver.Join', methods=['POST'])
+def network_driver_join():
+    # TODO(tfukushima): This is mocked and should be replaced with real data.
+    return jsonify({
+        "InterfaceNames": [{
+            "SrcName": "foobar",
+            "DstPrefix": ""
+        }],
+        "Gateway": "192.168.1.1/24",
+        "GatewayIPv6": "fe80::f816:3eff:fe20:57c1/64",
+        "StaticRoutes": [{
+            "Destination": "192.168.1.42",
+            "RouteType": CONNECTED,
+            "NextHop": "",
+            "InterfaceID": 0
+        }]
+    })
+
+
+@app.route('/NetworkDriver.Leave', methods=['POST'])
+def network_driver_leave():
+    return jsonify({})