ambari-metrics-anomaly-detection-service/src/main/java/org/apache/ambari/metrics/adservice/prototype/core/MetricKafkaProducer.java

/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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
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package org.apache.ambari.metrics.adservice.prototype.core;

import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.apache.hadoop.metrics2.sink.timeline.TimelineMetrics;
import org.apache.kafka.clients.producer.KafkaProducer;
import org.apache.kafka.clients.producer.Producer;
import org.apache.kafka.clients.producer.ProducerConfig;
import org.apache.kafka.clients.producer.ProducerRecord;
import org.apache.kafka.clients.producer.RecordMetadata;

import java.util.Properties;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Future;

public class MetricKafkaProducer {

    Producer producer;
    private static String topicName = "ambari-metrics-topic";

    public MetricKafkaProducer(String kafkaServers) {
        Properties configProperties = new Properties();
        configProperties.put(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, kafkaServers); //"avijayan-ams-2.openstacklocal:6667"
        configProperties.put(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG,"org.apache.kafka.common.serialization.ByteArraySerializer");
        configProperties.put(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG,"org.apache.kafka.connect.json.JsonSerializer");
        producer = new KafkaProducer(configProperties);
    }

    public void sendMetrics(TimelineMetrics timelineMetrics) throws InterruptedException, ExecutionException {

        ObjectMapper objectMapper = new ObjectMapper();
        JsonNode jsonNode = objectMapper.valueToTree(timelineMetrics);
        ProducerRecord<String, JsonNode> rec = new ProducerRecord<String, JsonNode>(topicName,jsonNode);
        Future<RecordMetadata> kafkaFuture =  producer.send(rec);

        System.out.println(kafkaFuture.isDone());
        System.out.println(kafkaFuture.get().topic());
    }
}