Made changes as per comments.
kafkaProducer is now non-static.
TODO: KafkaPublisherManager Service and not Singleton.
Kafka event publishing.
Change-Id: I5ec20a6e4950c38e822468d343521ab77475b7d3
diff --git a/apps/kafka-integration/core/src/main/java/org/onosproject/kafkaintegration/converter/LinkEventConverter.java b/apps/kafka-integration/core/src/main/java/org/onosproject/kafkaintegration/converter/LinkEventConverter.java
new file mode 100644
index 0000000..febe020
--- /dev/null
+++ b/apps/kafka-integration/core/src/main/java/org/onosproject/kafkaintegration/converter/LinkEventConverter.java
@@ -0,0 +1,101 @@
+/**
+ * Copyright 2016 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.kafkaintegration.converter;
+
+import org.onosproject.event.Event;
+import org.onosproject.grpc.net.Link.ConnectPoint;
+import org.onosproject.grpc.net.Link.LinkCore;
+import org.onosproject.grpc.net.Link.LinkState;
+import org.onosproject.grpc.net.Link.LinkType;
+import org.onosproject.grpc.net.LinkEvent.LinkEventType;
+import org.onosproject.grpc.net.LinkEvent.LinkNotification;
+import org.onosproject.net.link.LinkEvent;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.google.protobuf.GeneratedMessage;
+
+/**
+ * Converts for ONOS Link event message to protobuf format.
+ */
+public class LinkEventConverter implements EventConverter {
+
+ private final Logger log = LoggerFactory.getLogger(getClass());
+
+ @Override
+ public GeneratedMessage convertToProtoMessage(Event<?, ?> event) {
+
+ LinkEvent linkEvent = (LinkEvent) event;
+
+ if (!linkEventTypeSupported(linkEvent)) {
+ log.error("Unsupported Onos Event {}. There is no matching "
+ + "proto Event type", linkEvent.type().toString());
+ return null;
+ }
+
+ return buildDeviceProtoMessage(linkEvent);
+ }
+
+ private boolean linkEventTypeSupported(LinkEvent event) {
+ LinkEventType[] kafkaLinkEvents = LinkEventType.values();
+ for (LinkEventType linkEventType : kafkaLinkEvents) {
+ if (linkEventType.name().equals(event.type().name())) {
+ return true;
+ }
+ }
+ return false;
+ }
+
+ private LinkNotification buildDeviceProtoMessage(LinkEvent linkEvent) {
+ LinkNotification notification = LinkNotification.newBuilder()
+ .setLinkEventType(getProtoType(linkEvent))
+ .setLink(LinkCore.newBuilder()
+ .setState(LinkState
+ .valueOf(linkEvent.subject().state().name()))
+ .setType(LinkType.valueOf(linkEvent.subject().type().name()))
+ .setDst(ConnectPoint.newBuilder()
+ .setDeviceId(linkEvent.subject().dst()
+ .deviceId().toString())
+ .setPortNumber(linkEvent.subject().dst().port()
+ .toString()))
+ .setSrc(ConnectPoint.newBuilder()
+ .setDeviceId(linkEvent.subject().src()
+ .deviceId().toString())
+ .setPortNumber(linkEvent.subject().src().port()
+ .toString())))
+ .build();
+
+ return notification;
+ }
+
+ /**
+ * Returns the specific Kafka Device Event Type for the corresponding ONOS
+ * Device Event Type.
+ *
+ * @param event ONOS Device Event
+ * @return Kafka Device Event Type
+ */
+ private LinkEventType getProtoType(LinkEvent event) {
+ LinkEventType generatedEventType = null;
+ LinkEventType[] kafkaEvents = LinkEventType.values();
+ for (LinkEventType linkEventType : kafkaEvents) {
+ if (linkEventType.name().equals(event.type().name())) {
+ generatedEventType = linkEventType;
+ }
+ }
+
+ return generatedEventType;
+ }
+}