Initial implementation of XMPP Publish/Subscribe
Change-Id: I9930056b83004fa7a085f72f63ba973f9ec2d95b
diff --git a/protocols/xmpp/pubsub/api/src/main/java/org/onosproject/xmpp/pubsub/XmppPublishEventsListener.java b/protocols/xmpp/pubsub/api/src/main/java/org/onosproject/xmpp/pubsub/XmppPublishEventsListener.java
new file mode 100644
index 0000000..406b1d6
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+++ b/protocols/xmpp/pubsub/api/src/main/java/org/onosproject/xmpp/pubsub/XmppPublishEventsListener.java
@@ -0,0 +1,41 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * 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.xmpp.pubsub;
+
+import org.onosproject.xmpp.pubsub.model.XmppPublish;
+import org.onosproject.xmpp.pubsub.model.XmppRetract;
+
+/**
+ * Allows for providers interested in XMPP Publish/Retract events to be notified.
+ */
+public interface XmppPublishEventsListener {
+
+ /**
+ * Method for handling incoming XMPP Publish message.
+ *
+ * @param publishEvent event related to incoming XMPP Publish message
+ */
+ void handlePublish(XmppPublish publishEvent);
+
+ /**
+ * Method for handling incoming XMPP Retract message.
+ *
+ * @param retractEvent event related to incoming XMPP Retract message
+ */
+ void handleRetract(XmppRetract retractEvent);
+
+}