Unit tests for route store.
Change-Id: Ia711c497bb7d0751d692c2461c884ddc5287a2ef
diff --git a/incubator/net/src/main/java/org/onosproject/incubator/net/routing/impl/ListenerQueue.java b/incubator/net/src/main/java/org/onosproject/incubator/net/routing/impl/ListenerQueue.java
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+/*
+ * Copyright 2016-present 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.incubator.net.routing.impl;
+
+import org.onosproject.incubator.net.routing.RouteEvent;
+
+/**
+ * Queues updates for a route listener to ensure they are received in the
+ * correct order.
+ */
+interface ListenerQueue {
+
+ /**
+ * Posts an event to the listener.
+ *
+ * @param event event
+ */
+ void post(RouteEvent event);
+
+ /**
+ * Initiates event delivery to the listener.
+ */
+ void start();
+
+ /**
+ * Halts event delivery to the listener.
+ */
+ void stop();
+}