1 files changed, 60 insertions, 0 deletions
diff --git a/framework/src/onos/core/api/src/main/java/org/onosproject/event/EventSinkRegistry.java b/framework/src/onos/core/api/src/main/java/org/onosproject/event/EventSinkRegistry.java
new file mode 100644
index 00000000..bb054a30
--- /dev/null
+++ b/framework/src/onos/core/api/src/main/java/org/onosproject/event/EventSinkRegistry.java
@@ -0,0 +1,60 @@
+/*
+ * 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.event;
+
+import java.util.Set;
+
+/**
+ * Abstraction of an event sink registry capable of tracking sinks based on
+ * their event class.
+ */
+public interface EventSinkRegistry {
+
+    /**
+     * Adds the specified sink for the given event class.
+     *
+     * @param eventClass event class
+     * @param sink       event sink
+     * @param <E>        type of event
+     */
+    <E extends Event> void addSink(Class<E> eventClass, EventSink<E> sink);
+
+    /**
+     * Removes the sink associated with the given event class.
+     *
+     * @param eventClass event class
+     * @param <E>        type of event
+     */
+    <E extends Event> void removeSink(Class<E> eventClass);
+
+    /**
+     * Returns the event sink associated with the specified event class.
+     *
+     * @param eventClass event class
+     * @param <E>        type of event
+     * @return event sink or null if none found
+     */
+    <E extends Event> EventSink<E> getSink(Class<E> eventClass);
+
+    /**
+     * Returns the set of all event classes for which sinks are presently
+     * registered.
+     *
+     * @return set of event classes
+     */
+    Set<Class<? extends Event>> getSinks();
+
+}