src/main/java/com/att/dmf/mr/backends/kafka/KafkaPublisher.java

   1 /*******************************************************************************
   2  *  ============LICENSE_START=======================================================
   3  *  org.onap.dmaap
   4  *  ================================================================================
   5  *  Copyright © 2017 AT&T Intellectual Property. 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
  10  *        http://www.apache.org/licenses/LICENSE-2.0
  11 *
  12  *  Unless required by applicable law or agreed to in writing, software
  13  *  distributed under the License is distributed on an "AS IS" BASIS,
  14  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  15  *  See the License for the specific language governing permissions and
  16  *  limitations under the License.
  17  *  ============LICENSE_END=========================================================
  18  *
  19  *  ECOMP is a trademark and service mark of AT&T Intellectual Property.
  20  *
  21  *******************************************************************************/
  22 package com.att.dmf.mr.backends.kafka;
  23
  24 import java.io.IOException;
  25 import java.util.ArrayList;
  26 import java.util.LinkedList;
  27 import java.util.List;
  28 import java.util.Properties;
  29
  30 import org.apache.kafka.clients.producer.KafkaProducer;
  31 import org.apache.kafka.clients.producer.Producer;
  32 import org.apache.kafka.clients.producer.ProducerRecord;
  33 import org.json.JSONException;
  34 import org.springframework.beans.factory.annotation.Qualifier;
  35
  36 import com.att.dmf.mr.backends.Publisher;
  37 import com.att.dmf.mr.constants.CambriaConstants;
  38 //import org.slf4j.Logger;
  39 //import org.slf4j.LoggerFactory;
  40 import com.att.eelf.configuration.EELFLogger;
  41 import com.att.eelf.configuration.EELFManager;
  42 import com.att.nsa.drumlin.till.nv.rrNvReadable;
  43
  44
  45
  46 /**
  47  * Sends raw JSON objects into Kafka.
  48  *
  49  * Could improve space: BSON rather than JSON?
  50  *
  51  * @author peter
  52  *
  53  */
  54
  55 public class KafkaPublisher implements Publisher {
  56         /**
  57          * constructor initializing
  58          *
  59          * @param settings
  60          * @throws rrNvReadable.missingReqdSetting
  61          */
  62         public KafkaPublisher(@Qualifier("propertyReader") rrNvReadable settings) throws rrNvReadable.missingReqdSetting {
  63                 //fSettings = settings;
  64
  65                 final Properties props = new Properties();
  66                 /*transferSetting(fSettings, props, "metadata.broker.list", "localhost:9092");
  67                 transferSetting(fSettings, props, "request.required.acks", "1");
  68                 transferSetting(fSettings, props, "message.send.max.retries", "5");
  69                 transferSetting(fSettings, props, "retry.backoff.ms", "150"); */
  70                 String kafkaConnUrl= com.att.ajsc.filemonitor.AJSCPropertiesMap.getProperty(CambriaConstants.msgRtr_prop,"kafka.metadata.broker.list");
  71                 if(null==kafkaConnUrl){
  72
  73                         kafkaConnUrl="localhost:9092";
  74                 }
  75
  76
  77
  78
  79                 transferSetting( props, "bootstrap.servers",kafkaConnUrl);
  80
  81                 transferSetting( props, "request.required.acks", "1");
  82                 transferSetting( props, "message.send.max.retries", "5");
  83                 transferSetting(props, "retry.backoff.ms", "150");
  84
  85
  86
  87                 props.put("key.serializer", "org.apache.kafka.common.serialization.StringSerializer");
  88                  props.put("value.serializer", "org.apache.kafka.common.serialization.StringSerializer");
  89
  90
  91
  92                 fProducer = new KafkaProducer<>(props);
  93         }
  94
  95         /**
  96          * Send a message with a given topic and key.
  97          *
  98          * @param msg
  99          * @throws FailedToSendMessageException
 100          * @throws JSONException
 101          */
 102         @Override
 103         public void sendMessage(String topic, message msg) throws IOException{
 104                 final List<message> msgs = new LinkedList<message>();
 105                 msgs.add(msg);
 106                 sendMessages(topic, msgs);
 107         }
 108
 109         /**
 110          * method publishing batch messages
 111         * This method is commented from 0.8 to 0.11 upgrade
 112          * @param topic
 113          * @param kms
 114          * throws IOException
 115          *
 116         public void sendBatchMessage(String topic, ArrayList<KeyedMessage<String, String>> kms) throws IOException {
 117                 try {
 118                         fProducer.send(kms);
 119
 120                 } catch (FailedToSendMessageException excp) {
 121                         log.error("Failed to send message(s) to topic [" + topic + "].", excp);
 122                         throw new FailedToSendMessageException(excp.getMessage(), excp);
 123                 }
 124
 125         } */
 126
 127
 128         /*
 129          * Kafka 11.0 Interface
 130          * @see com.att.nsa.cambria.backends.Publisher#sendBatchMessageNew(java.lang.String, java.util.ArrayList)
 131          */
 132         public void sendBatchMessageNew(String topic, ArrayList <ProducerRecord<String,String>> kms) throws IOException {
 133                 try {
 134                         for (ProducerRecord<String,String> km : kms) {
 135                                 fProducer.send(km);
 136                         }
 137
 138                 } catch (Exception excp) {
 139                         log.error("Failed to send message(s) to topic [" + topic + "].", excp);
 140                         throw new IOException(excp.getMessage(), excp);
 141                 }
 142
 143         }
 144
 145         /**
 146          * Send a set of messages. Each must have a "key" string value.
 147          *
 148          * @param topic
 149          * @param msg
 150          * @throws FailedToSendMessageException
 151          * @throws JSONException
 152          *
 153         @Override
 154         public void sendMessages(String topic, List<? extends message> msgs)
 155                         throws IOException, FailedToSendMessageException {
 156                 log.info("sending " + msgs.size() + " events to [" + topic + "]");
 157
 158                 final List<KeyedMessage<String, String>> kms = new ArrayList<KeyedMessage<String, String>>(msgs.size());
 159                 for (message o : msgs) {
 160                         final KeyedMessage<String, String> data = new KeyedMessage<String, String>(topic, o.getKey(), o.toString());
 161                         kms.add(data);
 162                 }
 163                 try {
 164                         fProducer.send(kms);
 165
 166                 } catch (FailedToSendMessageException excp) {
 167                         log.error("Failed to send message(s) to topic [" + topic + "].", excp);
 168                         throw new FailedToSendMessageException(excp.getMessage(), excp);
 169                 }
 170         } */
 171         @Override
 172         public void sendMessagesNew(String topic, List<? extends message> msgs)
 173                         throws IOException {
 174                 log.info("sending " + msgs.size() + " events to [" + topic + "]");
 175 try{
 176                 final List<ProducerRecord<String, String>> kms = new ArrayList<>(msgs.size());
 177                         for (message o : msgs) {
 178
 179                         final ProducerRecord<String, String> data = new ProducerRecord<>(topic, o.getKey(), o.toString());
 180
 181
 182                 try {
 183
 184                         fProducer.send(data);
 185
 186                 } catch (Exception excp) {
 187                         log.error("Failed to send message(s) to topic [" + topic + "].", excp);
 188                         throw new Exception(excp.getMessage(), excp);
 189                 }
 190         }
 191
 192         }catch(Exception e){}
 193 }
 194         //private final rrNvReadable fSettings;
 195
 196
 197         private Producer<String, String> fProducer;
 198
 199   /**
 200    * It sets the key value pair
 201    * @param topic
 202    * @param msg
 203    * @param key
 204    * @param defVal
 205    */
 206         private void transferSetting(Properties props, String key, String defVal) {
 207                 String kafka_prop= com.att.ajsc.filemonitor.AJSCPropertiesMap.getProperty(CambriaConstants.msgRtr_prop,"kafka." + key);
 208                 if (null==kafka_prop) kafka_prop=defVal;
 209                 //props.put(key, settings.getString("kafka." + key, defVal));
 210                 props.put(key, kafka_prop);
 211         }
 212
 213         //private static final Logger log = LoggerFactory.getLogger(KafkaPublisher.class);
 214
 215         private static final EELFLogger log = EELFManager.getInstance().getLogger(KafkaPublisher.class);
 216
 217         @Override
 218         public void sendMessages(String topic, List<? extends message> msgs) throws IOException {
 219                 // TODO Auto-generated method stub
 220
 221         }
 222
 223
 224 }