Application manages the IP layer topology information - Interfaces

Change-Id: Ie1dea035674ee98583e98a82cca7e33ab0858b92
diff --git a/apps/iptopology-api/src/main/java/org/onosproject/iptopology/api/link/IpLinkService.java b/apps/iptopology-api/src/main/java/org/onosproject/iptopology/api/link/IpLinkService.java
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+++ b/apps/iptopology-api/src/main/java/org/onosproject/iptopology/api/link/IpLinkService.java
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+/*
+ * Copyright 2014 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.iptopology.api.link;
+
+import java.util.Set;
+
+import org.onosproject.event.ListenerService;
+import org.onosproject.iptopology.api.IpLink;
+import org.onosproject.iptopology.api.TerminationPoint;
+import org.onosproject.net.DeviceId;
+
+/**
+ * Service for interacting with the inventory of infrastructure links.
+ */
+public interface IpLinkService
+    extends ListenerService<IpLinkEvent, IpLinkListener> {
+
+    /**
+     * Returns the count of all known ip links.
+     *
+     * @return number of ip links
+     */
+    int getIpLinkCount();
+
+    /**
+     * Returns a collection of all ip links.
+     *
+     * @return all ip links
+     */
+    Iterable<IpLink> getIpLinks();
+
+
+    /**
+     * Returns set of all ip links leading to and from the
+     * specified ip device.
+     *
+     * @param deviceId device identifier
+     * @return set of ip device links
+     */
+    Set<IpLink> getIpDeviceLinks(DeviceId deviceId);
+
+    /**
+     * Returns set of all ip links leading from the specified ip device.
+     *
+     * @param deviceId device identifier
+     * @return set of ip device egress links
+     */
+    Set<IpLink> getIpDeviceEgressLinks(DeviceId deviceId);
+
+    /**
+     * Returns set of all ip links leading to the specified ip device.
+     *
+     * @param deviceId device identifier
+     * @return set of ip device ingress links
+     */
+    Set<IpLink> getIpDeviceIngressLinks(DeviceId deviceId);
+
+    /**
+     * Returns set of all ip links leading to and from the
+     * specified termination point.
+     *
+     * @param terminationPoint termination point
+     * @return set of ip links
+     */
+    Set<IpLink> getIpLinks(TerminationPoint terminationPoint);
+
+    /**
+     * Returns set of all ip links leading from the specified
+     * termination point.
+     *
+     * @param terminationPoint termination point
+     * @return set of ip device egress links
+     */
+    Set<IpLink> getEgressIpLinks(TerminationPoint terminationPoint);
+
+    /**
+     * Returns set of all ip links leading to the specified
+     * termination point.
+     *
+     * @param terminationPoint termination point
+     * @return set of ip device ingress links
+     */
+    Set<IpLink> getIngressIpLinks(TerminationPoint terminationPoint);
+
+    /**
+     * Returns the ip links between the specified source
+     * and destination termination points.
+     *
+     * @param src source termination point
+     * @param dst destination termination point
+     * @return ip link from source to destination; null if none found
+     */
+    IpLink getIpLink(TerminationPoint src, TerminationPoint dst);
+
+}