--- /dev/null
+/**
+ * ============LICENSE_START=======================================================
+ *
+ * ================================================================================
+ * Copyright © 2017 AT&T Intellectual Property.
+ * Copyright © 2017 Amdocs
+ * All rights reserved.
+ * ================================================================================
+ * 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.
+ * ============LICENSE_END=========================================================
+ *
+ * ECOMP and OpenECOMP are trademarks
+ * and service marks of AT&T Intellectual Property.
+ */
+package org.onap.champ.async;
+
+import java.util.concurrent.ArrayBlockingQueue;
+import java.util.concurrent.BlockingQueue;
+import java.util.concurrent.Executors;
+import java.util.concurrent.ThreadPoolExecutor;
+
+import org.onap.aai.cl.api.Logger;
+import org.onap.aai.cl.eelf.LoggerFactory;
+import org.onap.champ.event.GraphEvent;
+import org.onap.champ.event.GraphEvent.GraphEventResult;
+import org.onap.champ.service.ChampThreadFactory;
+import org.onap.champ.service.logging.ChampMsgs;
+
+import org.onap.aai.event.api.EventPublisher;
+
+public class ChampAsyncResponsePublisher {
+
+ private EventPublisher asyncResponsePublisher;
+
+ /**
+ * Number of events that can be queued up.
+ */
+ private Integer responsePublisherQueueSize;
+
+ /**
+ * Number of event publisher worker threads.
+ */
+ private Integer responsePublisherPoolSize;
+
+ /**
+ * Internal queue where outgoing events will be buffered.
+ **/
+ private BlockingQueue<GraphEvent> responsePublisherEventQueue;
+
+ /**
+ * Pool of worker threads that do the work of publishing the events to the
+ * event bus.
+ */
+ private ThreadPoolExecutor responsePublisherPool;
+
+ private static final Integer DEFAULT_ASYNC_RESPONSE_PUBLISH_QUEUE_CAPACITY = 10000;
+
+ private static final Integer DEFAULT_ASYNC_RESPONSE_PUBLISH_THREAD_POOL_SIZE = 10;
+ private static final String CHAMP_GRAPH_RESPONSE_PUBLISH_THREAD_NAME = "ChampAsyncGraphResponseEventPublisher";
+
+ private static Logger logger = LoggerFactory.getInstance().getLogger(ChampAsyncRequestProcessor.class.getName());
+
+ public ChampAsyncResponsePublisher(EventPublisher asyncResponsePublisher, Integer responsePublisherQueueSize,
+ Integer responsePublisherPoolSize) {
+ this.responsePublisherQueueSize = responsePublisherQueueSize;
+
+ this.responsePublisherPoolSize = responsePublisherPoolSize;
+
+ responsePublisherEventQueue = new ArrayBlockingQueue<GraphEvent>(responsePublisherQueueSize);
+ responsePublisherPool = (ThreadPoolExecutor) Executors.newFixedThreadPool(responsePublisherPoolSize,
+ new ChampThreadFactory(CHAMP_GRAPH_RESPONSE_PUBLISH_THREAD_NAME));
+
+ for (int i = 0; i < responsePublisherPoolSize; i++) {
+ responsePublisherPool.submit(new GizmoResponsePublisherWorker());
+ }
+ this.asyncResponsePublisher = asyncResponsePublisher;
+
+ logger.info(ChampMsgs.CHAMP_ASYNC_RESPONSE_PUBLISHER_INFO,
+ "ChampAsyncResponsePublisher initialized SUCCESSFULLY! with event publisher "
+ + asyncResponsePublisher.getClass().getName());
+ }
+
+ public ChampAsyncResponsePublisher(EventPublisher asyncResponsePublisher) {
+ responsePublisherQueueSize = DEFAULT_ASYNC_RESPONSE_PUBLISH_QUEUE_CAPACITY;
+
+ responsePublisherPoolSize = DEFAULT_ASYNC_RESPONSE_PUBLISH_THREAD_POOL_SIZE;
+
+ responsePublisherEventQueue = new ArrayBlockingQueue<GraphEvent>(responsePublisherQueueSize);
+ responsePublisherPool = (ThreadPoolExecutor) Executors.newFixedThreadPool(responsePublisherPoolSize,
+ new ChampThreadFactory(CHAMP_GRAPH_RESPONSE_PUBLISH_THREAD_NAME));
+
+ for (int i = 0; i < responsePublisherPoolSize; i++) {
+ responsePublisherPool.submit(new GizmoResponsePublisherWorker());
+ }
+ this.asyncResponsePublisher = asyncResponsePublisher;
+
+ logger.info(ChampMsgs.CHAMP_ASYNC_RESPONSE_PUBLISHER_INFO,
+ "CrudAsyncResponsePublisher initialized SUCCESSFULLY! with event publisher "
+ + asyncResponsePublisher.getClass().getName());
+ }
+
+ public void publishResponseEvent(GraphEvent event) {
+ responsePublisherEventQueue.offer(event);
+
+ }
+
+ private class GizmoResponsePublisherWorker implements Runnable {
+
+ @Override
+ public void run() {
+
+ while (true) {
+
+ GraphEvent event = null;
+ try {
+
+ // Get the next event to be published from the queue.
+ event = responsePublisherEventQueue.take();
+
+ } catch (InterruptedException e) {
+
+ // Restore the interrupted status.
+ Thread.currentThread().interrupt();
+ }
+ // Publish the response
+
+ try {
+ event.setTimestamp(System.currentTimeMillis());
+ asyncResponsePublisher.sendSync(event.toJson());
+ if (event.getResult().equals(GraphEventResult.SUCCESS)) {
+ logger.info(ChampMsgs.CHAMP_ASYNC_RESPONSE_PUBLISHER_INFO,
+ "Response published for Event of type: " + event.getObjectType() + " with key: " + event.getObjectKey()
+ + " , transaction-id: " + event.getTransactionId() + " , operation: "
+ + event.getOperation().toString() + " , result: " + event.getResult());
+ } else {
+ logger.info(ChampMsgs.CHAMP_ASYNC_RESPONSE_PUBLISHER_INFO,
+ "Response published for Event of type: " + event.getObjectType() + " with key: " + event.getObjectKey()
+ + " , transaction-id: " + event.getTransactionId() + " , operation: "
+ + event.getOperation().toString() + " , result: " + event.getResult() + " , error: "
+ + event.getErrorMessage());
+ }
+ } catch (Exception ex) {
+ logger.error(ChampMsgs.CHAMP_ASYNC_RESPONSE_PUBLISHER_ERROR, ex.getMessage());
+ }
+
+ }
+ }
+ }
+
+}
Code Review / aai / champ.git / blobdiff