nbinotifications/src/main/java/org/opendaylight/transportpce/nbinotifications/producer/Publisher.java

   1 /*
   2  * Copyright © 2020 Orange, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.transportpce.nbinotifications.producer;
   9
  10 import com.google.common.annotations.VisibleForTesting;
  11 import java.util.Properties;
  12 import org.apache.kafka.clients.producer.KafkaProducer;
  13 import org.apache.kafka.clients.producer.Producer;
  14 import org.apache.kafka.clients.producer.ProducerConfig;
  15 import org.apache.kafka.clients.producer.ProducerRecord;
  16 import org.apache.kafka.common.serialization.StringSerializer;
  17 import org.opendaylight.transportpce.common.converter.JsonStringConverter;
  18 import org.opendaylight.transportpce.nbinotifications.serialization.ConfigConstants;
  19 import org.opendaylight.transportpce.nbinotifications.utils.NbiNotificationsUtils;
  20 import org.opendaylight.yangtools.yang.binding.DataObject;
  21 import org.slf4j.Logger;
  22 import org.slf4j.LoggerFactory;
  23
  24 public class Publisher<T extends DataObject> {
  25     private static final Logger LOG = LoggerFactory.getLogger(Publisher.class);
  26
  27     private final String id;
  28     private final Producer<String, T> producer;
  29
  30     public Publisher(String id, String publisherServer, JsonStringConverter<T> serializer, Class<?> serializerConf) {
  31         Properties properties = NbiNotificationsUtils.loadProperties("publisher.properties");
  32         properties.put(ProducerConfig.CLIENT_ID_CONFIG, id);
  33         if (publisherServer != null && !publisherServer.isBlank()) {
  34             properties.put(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, publisherServer);
  35         }
  36         properties.put(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG, StringSerializer.class);
  37         properties.put(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG , serializerConf);
  38         properties.put(ConfigConstants.CONVERTER , serializer);
  39         LOG.info("Creation publisher for id {} with properties {}", id, properties);
  40         producer = new KafkaProducer<>(properties);
  41         this.id = id;
  42     }
  43
  44     @VisibleForTesting Publisher(String id, Producer<String, T> producer) {
  45         this.producer = producer;
  46         this.id = id;
  47     }
  48
  49     public void close() {
  50         producer.close();
  51     }
  52
  53     public void sendEvent(T notification, String topic) {
  54         LOG.info("SendEvent request to topic '{}' ", topic);
  55         producer.send(new ProducerRecord<>(topic, id, notification));
  56         producer.flush();
  57     }
  58 }