ONOS-2846, ONOS-2812 Reworking link discovery provider to be fully configurable …

…and to prune links based on links rather than based on ports.

Change-Id: I0a042403baf163bebd471bffd112b28571dae75b

+/*
+ * 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.provider.lldp.impl;
+
+import org.onosproject.mastership.MastershipService;
+import org.onosproject.net.link.LinkProviderService;
+import org.onosproject.net.packet.PacketService;
+
+/**
+ * Shared context for use by link discovery.
+ */
+public interface DiscoveryContext {
+
+    /**
+     * Returns the shared mastership service reference.
+     *
+     * @return mastership service
+     */
+    MastershipService mastershipService();
+
+    /**
+     * Returns the shared link provider service reference.
+     *
+     * @return link provider service
+     */
+    LinkProviderService providerService();
+
+    /**
+     * Returns the shared packet service reference.
+     *
+     * @return packet service
+     */
+    PacketService packetService();
+
+    /**
+     * Returns the probe rate in millis.
+     *
+     * @return probe rate
+     */
+    long probeRate();
+
+    /**
+     * Returns the max stale link age in millis.
+     *
+     * @return stale link age
+     */
+    long staleLinkAge();
+
+    /**
+     * Indicates whether to emit BDDP.
+     *
+     * @return true to emit BDDP
+     */
+    boolean useBDDP();
+}

@@ -108,7 +108,6 @@ public class LLDPLinkProviderTest {
         provider.providerRegistry = linkService;
         provider.masterService = masterService;
 
-
         provider.activate(null);
     }