2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright (C) 2022 Nordix Foundation. All rights reserved.
6 * ================================================================================
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 * ============LICENSE_END=========================================================
20 package org.openecomp.sdc.be.components.kafka;
22 import com.google.common.annotations.VisibleForTesting;
23 import java.util.Properties;
24 import java.util.UUID;
25 import org.apache.kafka.clients.CommonClientConfigs;
26 import org.apache.kafka.clients.producer.KafkaProducer;
27 import org.apache.kafka.clients.producer.ProducerConfig;
28 import org.apache.kafka.clients.producer.ProducerRecord;
29 import org.apache.kafka.common.KafkaException;
30 import org.apache.kafka.common.config.SaslConfigs;
31 import org.openecomp.sdc.be.config.DistributionEngineConfiguration;
32 import org.slf4j.Logger;
33 import org.slf4j.LoggerFactory;
36 * Utility class that provides a KafkaProducer to communicate with a kafka cluster
38 public class SdcKafkaProducer {
39 private static final Logger log = LoggerFactory.getLogger(SdcKafkaProducer.class.getName());
40 private static final String DEFAULT_SASL_MECHANISM = "SCRAM-SHA-512";
42 private KafkaProducer<String, String> kafkaProducer;
45 * Constructor setting up the KafkaProducer from a predefined set of configurations
47 public SdcKafkaProducer(DistributionEngineConfiguration deConfiguration) {
48 log.info("Create SdcKafkaProducer via constructor");
49 Properties properties = new Properties();
51 properties.put(ProducerConfig.CLIENT_ID_CONFIG, deConfiguration.getDistributionStatusTopic().getConsumerId() + "-producer-" + UUID.randomUUID());
52 properties.put(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG, "org.apache.kafka.common.serialization.StringSerializer");
53 properties.put(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG, "org.apache.kafka.common.serialization.StringSerializer");
54 properties.put(CommonClientConfigs.BOOTSTRAP_SERVERS_CONFIG, deConfiguration.getKafkaBootStrapServers());
55 properties.put(CommonClientConfigs.SECURITY_PROTOCOL_CONFIG, "SASL_PLAINTEXT");
56 properties.put(SaslConfigs.SASL_JAAS_CONFIG, getKafkaSaslJaasConfig());
57 properties.put(SaslConfigs.SASL_MECHANISM, getKafkaSaslMechanism());
58 kafkaProducer = new KafkaProducer<>(properties);
63 * @param kafkaProducer Setting a KafkaProducer to use within the sdcKafkaProducer class
66 SdcKafkaProducer(KafkaProducer kafkaProducer) {
67 this.kafkaProducer = kafkaProducer;
71 * @return The Sasl Jaas Configuration
73 private static String getKafkaSaslJaasConfig() throws KafkaException {
74 String saslJaasConfFromEnv = System.getenv("SASL_JAAS_CONFIG");
75 if(saslJaasConfFromEnv != null) {
76 return saslJaasConfFromEnv;
78 throw new KafkaException("sasl.jaas.config not set for Kafka Consumer");
82 private static String getKafkaSaslMechanism() throws KafkaException {
83 String saslMechanism = System.getenv("SASL_MECHANISM");
84 if(saslMechanism != null) {
87 return DEFAULT_SASL_MECHANISM;
92 * @param message A message to Send
93 * @param topicName The name of the topic to publish to
94 * @return The status of the send request
96 public void send(String message, String topicName) throws KafkaException {
97 ProducerRecord<String, String> kafkaMessagePayload = new ProducerRecord<>(topicName, "PartitionKey", message);
98 kafkaProducer.send(kafkaMessagePayload);
102 * Kafka FLush operation
104 public void flush() throws KafkaException {
105 log.info("SdcKafkaProducer - flush");
106 kafkaProducer.flush();