1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
|
/*-
* ============LICENSE_START=======================================================
* dmaap-kafka-client
* ================================================================================
* Copyright (C) 2023 Nordix Foundation. 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=========================================================
*/
package org.onap.dmaap.kafka;
import java.util.List;
import java.util.Properties;
import java.util.UUID;
import java.util.concurrent.ExecutionException;
import org.apache.kafka.clients.CommonClientConfigs;
import org.apache.kafka.clients.producer.KafkaProducer;
import org.apache.kafka.clients.producer.ProducerConfig;
import org.apache.kafka.clients.producer.ProducerRecord;
import org.apache.kafka.clients.producer.RecordMetadata;
import org.apache.kafka.common.KafkaException;
import org.apache.kafka.common.config.SaslConfigs;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Utility class that provides a KafkaProducer to communicate with a kafka cluster
*/
public class OnapKafkaProducer {
private final Logger log = LoggerFactory.getLogger(OnapKafkaProducer.class);
private final KafkaProducer<String, String> producer;
private final List<String> producerTopics;
/**
*
* @param configuration The config provided to the client
*/
public OnapKafkaProducer(IKafkaConfig configuration) {
producerTopics = configuration.getProducerTopics();
log.debug("Instantiating kafka producer for topics {}", producerTopics);
Properties props = new Properties();
props.put(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG, "org.apache.kafka.common.serialization.StringSerializer");
props.put(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG, "org.apache.kafka.common.serialization.StringSerializer");
props.put(ProducerConfig.CLIENT_ID_CONFIG, configuration.getConsumerID() + "-producer-" + UUID.randomUUID());
props.put(CommonClientConfigs.SECURITY_PROTOCOL_CONFIG, configuration.getKafkaSecurityProtocolConfig());
props.put(CommonClientConfigs.BOOTSTRAP_SERVERS_CONFIG, configuration.getKafkaBootstrapServers());
props.put(SaslConfigs.SASL_JAAS_CONFIG, configuration.getKafkaSaslJaasConfig());
props.put(SaslConfigs.SASL_MECHANISM, configuration.getKafkaSaslMechanism());
props.put(ProducerConfig.MAX_BLOCK_MS_CONFIG, 10000);
producer = new KafkaProducer<>(props);
}
/**
*
* @param topicName The name of the topic to publish the data to
* @param value The value of the data
* @return The RecordMetedata of the request
*/
public RecordMetadata sendDataSynch(String topicName, String value) {
RecordMetadata data = null;
try {
data = producer.send(new ProducerRecord<>(topicName, value)).get();
log.debug("Data sent to topic {} at partition no {} and offset {}", topicName, data.partition(), data.offset());
} catch (KafkaException | ExecutionException | InterruptedException e) {
log.error("Failed the send data: exc {}", e.getMessage());
} finally {
producer.flush();
}
return data;
}
}
|
