[Falcon][WIP] CORD-368 Added APIs for service dependency

- Added create/remove service dependency to CordVtn
- Added new type for service ID

Change-Id: If836ab6bcc5e60c1707b2dbf0a244a204529b007
diff --git a/apps/cordvtn/src/main/java/org/onosproject/cordvtn/Service.java b/apps/cordvtn/src/main/java/org/onosproject/cordvtn/Service.java
new file mode 100644
index 0000000..2c31ccc
--- /dev/null
+++ b/apps/cordvtn/src/main/java/org/onosproject/cordvtn/Service.java
@@ -0,0 +1,130 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.cordvtn;
+
+import com.google.common.base.MoreObjects;
+import org.onlab.packet.IpAddress;
+import org.onlab.packet.IpPrefix;
+
+import java.util.Objects;
+
+public final class Service {
+
+    enum ServiceType {
+        PRIVATE,
+        PRIVATE_DIRECT,
+        PRIVATE_INDIRECT,
+        PUBLIC_DIRECT,
+        PUBLIC_INDIRECT
+    }
+
+    private final ServiceId serviceId;
+    private final String networkId;
+    private final ServiceType serviceType;
+    private final IpPrefix serviceIpRange;
+    private final IpAddress serviceIp;
+
+    /**
+     * Default constructor.
+     *
+     * @param serviceId service id
+     * @param networkId OpenStack Neutron network id
+     * @param serviceType service type
+     * @param serviceIpRange service ip range
+     * @param serviceIp service ip
+     */
+    public Service(ServiceId serviceId, String networkId, ServiceType serviceType,
+                   IpPrefix serviceIpRange, IpAddress serviceIp) {
+        this.serviceId = serviceId;
+        this.networkId = networkId;
+        this.serviceType = serviceType;
+        this.serviceIpRange = serviceIpRange;
+        this.serviceIp = serviceIp;
+    }
+
+    /**
+     * Returns service ID.
+     *
+     * @return service id
+     */
+    public ServiceId serviceId() {
+        return serviceId;
+    }
+
+    /**
+     * Returns OpenStack Neutron network ID of this service.
+     *
+     * @return network id
+     */
+    public String networkId() {
+        return networkId;
+    }
+
+    /**
+     * Returns service type.
+     *
+     * @return service type
+     */
+    public ServiceType serviceType() {
+        return serviceType;
+    }
+
+    /**
+     * Returns service IP range.
+     *
+     * @return CIDR
+     */
+    public IpPrefix serviceIpRange() {
+        return serviceIpRange;
+    }
+
+    /**
+     * Returns service IP address.
+     *
+     * @return ip address
+     */
+    public IpAddress serviceIp() {
+        return serviceIp;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(serviceId);
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (!(obj instanceof Service)) {
+            return false;
+        }
+        final Service other = (Service) obj;
+        return Objects.equals(this.serviceId, other.serviceId);
+    }
+
+    @Override
+    public String toString() {
+        return MoreObjects.toStringHelper(this)
+                .add("serviceId", serviceId)
+                .add("networkId", networkId)
+                .add("serviceType", serviceType)
+                .add("serviceIpRange", serviceIpRange)
+                .add("serviceIp", serviceIp)
+                .toString();
+    }
+}