[ODTN] Add read/create/delete ConnectivityService RPC

- RPC: get service interface point
- RPC: get connectivity service list
- RPC: get connectivity service detail
- RPC: create connectivity service
- RPC: delete connectivity service

- Filter method of TAPI resolver for both Node / NEP
- Change condition for sip to odtn-port-type
- Use odtn-port-type in path-computation mock
- Create CEP at topology discovery

- Add sample path calculator
- Add connection-id based path selection

Change-Id: I2f08aacb3dd14b6b3c59a64a349e50abb495f70b
diff --git a/apps/odtn/api/src/main/java/org/onosproject/odtn/utils/tapi/TapiTopologyHandler.java b/apps/odtn/api/src/main/java/org/onosproject/odtn/utils/tapi/TapiTopologyHandler.java
new file mode 100644
index 0000000..2d81e80
--- /dev/null
+++ b/apps/odtn/api/src/main/java/org/onosproject/odtn/utils/tapi/TapiTopologyHandler.java
@@ -0,0 +1,59 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * 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.
+ */
+
+package org.onosproject.odtn.utils.tapi;
+
+import static org.onosproject.odtn.utils.tapi.TapiGlobalClassUtil.getUuid;
+import static org.onosproject.odtn.utils.tapi.TapiGlobalClassUtil.setUuid;
+
+import org.onosproject.yang.gen.v1.tapicommon.rev20180307.tapicommon.DefaultContext;
+import org.onosproject.yang.gen.v1.tapicommon.rev20180307.tapicommon.Uuid;
+import org.onosproject.yang.gen.v1.tapitopology.rev20180307.tapitopology.context.DefaultAugmentedTapiCommonContext;
+import org.onosproject.yang.gen.v1.tapitopology.rev20180307.tapitopology.topologycontext.DefaultTopology;
+import org.onosproject.yang.model.ModelObjectId;
+
+/**
+ * Utility class to deal with TAPI Topology with DCS.
+ */
+public final class TapiTopologyHandler extends TapiObjectHandler<DefaultTopology> {
+
+    private TapiTopologyHandler() {
+        obj = new DefaultTopology();
+        setId();
+    }
+
+    public static TapiTopologyHandler create() {
+        return new TapiTopologyHandler();
+    }
+
+    @Override
+    protected Uuid getIdDetail() {
+        return getUuid(obj);
+    }
+
+    @Override
+    protected void setIdDetail(Uuid uuid) {
+        setUuid(obj, uuid);
+    }
+
+    @Override
+    public ModelObjectId getParentModelObjectId() {
+        DefaultAugmentedTapiCommonContext topologyContext = new DefaultAugmentedTapiCommonContext();
+        topologyContext.addToTopology(obj);
+
+        return ModelObjectId.builder().addChild(DefaultContext.class).build();
+    }
+}