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 com.att.dmf.mr.utils.Utils;
  39 //import org.slf4j.Logger;
  40 //import org.slf4j.LoggerFactory;
  41 import com.att.eelf.configuration.EELFLogger;
  42 import com.att.eelf.configuration.EELFManager;
  43 import com.att.nsa.drumlin.till.nv.rrNvReadable;
  44
  45
  46
  47 /**
  48  * Sends raw JSON objects into Kafka.
  49  *
  50  * Could improve space: BSON rather than JSON?
  51  *
  52  * @author peter
  53  *
  54  */
  55
  56 public class KafkaPublisher implements Publisher {
  57         /**
  58          * constructor initializing
  59          *
  60          * @param settings
  61          * @throws rrNvReadable.missingReqdSetting
  62          */
  63         public KafkaPublisher(@Qualifier("propertyReader") rrNvReadable settings) throws rrNvReadable.missingReqdSetting {
  64                 //fSettings = settings;
  65
  66                 final Properties props = new Properties();
  67                 /*transferSetting(fSettings, props, "metadata.broker.list", "localhost:9092");
  68                 transferSetting(fSettings, props, "request.required.acks", "1");
  69                 transferSetting(fSettings, props, "message.send.max.retries", "5");
  70                 transferSetting(fSettings, props, "retry.backoff.ms", "150"); */
  71                 String kafkaConnUrl= com.att.ajsc.filemonitor.AJSCPropertiesMap.getProperty(CambriaConstants.msgRtr_prop,"kafka.metadata.broker.list");
  72                 if(null==kafkaConnUrl){
  73
  74                         kafkaConnUrl="localhost:9092";
  75                 }
  76
  77
  78
  79                 transferSetting( props, "sasl.jaas.config", "org.apache.kafka.common.security.plain.PlainLoginModule required username='admin' password='"+Utils.getKafkaproperty()+"';");
  80                 transferSetting( props, "security.protocol", "SASL_PLAINTEXT");
  81                 transferSetting( props, "sasl.mechanism", "PLAIN");
  82                 transferSetting( props, "bootstrap.servers",kafkaConnUrl);
  83
  84                 transferSetting( props, "request.required.acks", "1");
  85                 transferSetting( props, "message.send.max.retries", "5");
  86                 transferSetting(props, "retry.backoff.ms", "150");
  87
  88
  89
  90                 props.put("key.serializer", "org.apache.kafka.common.serialization.StringSerializer");
  91                  props.put("value.serializer", "org.apache.kafka.common.serialization.StringSerializer");
  92
  93
  94
  95                 fProducer = new KafkaProducer<>(props);
  96         }
  97
  98         /**
  99          * Send a message with a given topic and key.
 100          *
 101          * @param msg
 102          * @throws FailedToSendMessageException
 103          * @throws JSONException
 104          */
 105         @Override
 106         public void sendMessage(String topic, message msg) throws IOException{
 107                 final List<message> msgs = new LinkedList<message>();
 108                 msgs.add(msg);
 109                 sendMessages(topic, msgs);
 110         }
 111
 112         /**
 113          * method publishing batch messages
 114         * This method is commented from 0.8 to 0.11 upgrade
 115          * @param topic
 116          * @param kms
 117          * throws IOException
 118          *
 119         public void sendBatchMessage(String topic, ArrayList<KeyedMessage<String, String>> kms) throws IOException {
 120                 try {
 121                         fProducer.send(kms);
 122
 123                 } catch (FailedToSendMessageException excp) {
 124                         log.error("Failed to send message(s) to topic [" + topic + "].", excp);
 125                         throw new FailedToSendMessageException(excp.getMessage(), excp);
 126                 }
 127
 128         } */
 129
 130
 131         /*
 132          * Kafka 11.0 Interface
 133          * @see com.att.nsa.cambria.backends.Publisher#sendBatchMessageNew(java.lang.String, java.util.ArrayList)
 134          */
 135         public void sendBatchMessageNew(String topic, ArrayList <ProducerRecord<String,String>> kms) throws IOException {
 136                 try {
 137                         for (ProducerRecord<String,String> km : kms) {
 138                                 fProducer.send(km);
 139                         }
 140
 141                 } catch (Exception excp) {
 142                         log.error("Failed to send message(s) to topic [" + topic + "].", excp);
 143                         throw new IOException(excp.getMessage(), excp);
 144                 }
 145
 146         }
 147
 148         /**
 149          * Send a set of messages. Each must have a "key" string value.
 150          *
 151          * @param topic
 152          * @param msg
 153          * @throws FailedToSendMessageException
 154          * @throws JSONException
 155          *
 156         @Override
 157         public void sendMessages(String topic, List<? extends message> msgs)
 158                         throws IOException, FailedToSendMessageException {
 159                 log.info("sending " + msgs.size() + " events to [" + topic + "]");
 160
 161                 final List<KeyedMessage<String, String>> kms = new ArrayList<KeyedMessage<String, String>>(msgs.size());
 162                 for (message o : msgs) {
 163                         final KeyedMessage<String, String> data = new KeyedMessage<String, String>(topic, o.getKey(), o.toString());
 164                         kms.add(data);
 165                 }
 166                 try {
 167                         fProducer.send(kms);
 168
 169                 } catch (FailedToSendMessageException excp) {
 170                         log.error("Failed to send message(s) to topic [" + topic + "].", excp);
 171                         throw new FailedToSendMessageException(excp.getMessage(), excp);
 172                 }
 173         } */
 174         @Override
 175         public void sendMessagesNew(String topic, List<? extends message> msgs)
 176                         throws IOException {
 177                 log.info("sending " + msgs.size() + " events to [" + topic + "]");
 178 try{
 179                 final List<ProducerRecord<String, String>> kms = new ArrayList<>(msgs.size());
 180                         for (message o : msgs) {
 181
 182                         final ProducerRecord<String, String> data = new ProducerRecord<>(topic, o.getKey(), o.toString());
 183
 184
 185                 try {
 186
 187                         fProducer.send(data);
 188
 189                 } catch (Exception excp) {
 190                         log.error("Failed to send message(s) to topic [" + topic + "].", excp);
 191                         throw new Exception(excp.getMessage(), excp);
 192                 }
 193         }
 194
 195         }catch(Exception e){}
 196 }
 197         //private final rrNvReadable fSettings;
 198
 199
 200         private Producer<String, String> fProducer;
 201
 202   /**
 203    * It sets the key value pair
 204    * @param topic
 205    * @param msg
 206    * @param key
 207    * @param defVal
 208    */
 209         private void transferSetting(Properties props, String key, String defVal) {
 210                 String kafka_prop= com.att.ajsc.filemonitor.AJSCPropertiesMap.getProperty(CambriaConstants.msgRtr_prop,"kafka." + key);
 211                 if (null==kafka_prop) kafka_prop=defVal;
 212                 //props.put(key, settings.getString("kafka." + key, defVal));
 213                 props.put(key, kafka_prop);
 214         }
 215
 216         //private static final Logger log = LoggerFactory.getLogger(KafkaPublisher.class);
 217
 218         private static final EELFLogger log = EELFManager.getInstance().getLogger(KafkaPublisher.class);
 219
 220         @Override
 221         public void sendMessages(String topic, List<? extends message> msgs) throws IOException {
 222                 // TODO Auto-generated method stub
 223
 224         }
 225
 226
 227 }