gerrit.onap Code Review - policy/apex-pdp.git/blob

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  *  Copyright (C) 2016-2018 Ericsson. All rights reserved.
   4  * ================================================================================
   5  * Licensed under the Apache License, Version 2.0 (the "License");
   6  * you may not use this file except in compliance with the License.
   7  * You may obtain a copy of the License at
   8  *
   9  *      http://www.apache.org/licenses/LICENSE-2.0
  10  *
  11  * Unless required by applicable law or agreed to in writing, software
  12  * distributed under the License is distributed on an "AS IS" BASIS,
  13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14  * See the License for the specific language governing permissions and
  15  * limitations under the License.
  16  *
  17  * SPDX-License-Identifier: Apache-2.0
  18  * ============LICENSE_END=========================================================
  19  */
  20
  21 package org.onap.policy.apex.testsuites.integration.uservice.adapt.kafka;
  22
  23 import com.salesforce.kafka.test.junit4.SharedKafkaTestResource;
  24
  25 import java.util.concurrent.TimeUnit;
  26
  27 import org.apache.kafka.clients.producer.Producer;
  28 import org.apache.kafka.clients.producer.ProducerRecord;
  29 import org.apache.kafka.common.serialization.StringSerializer;
  30 import org.onap.policy.apex.core.infrastructure.threading.ThreadUtilities;
  31 import org.onap.policy.apex.testsuites.integration.uservice.adapt.events.EventGenerator;
  32
  33 /**
  34  * The Class KafkaEventProducer.
  35  *
  36  * @author Liam Fallon (liam.fallon@ericsson.com)
  37  */
  38 public class KafkaEventProducer implements Runnable {
  39     private final String topic;
  40     private final SharedKafkaTestResource sharedKafkaTestResource;
  41     private final int eventCount;
  42     private final boolean xmlEvents;
  43     private final long eventInterval;
  44     private long eventsSentCount = 0;
  45
  46     private final Thread producerThread;
  47     private boolean sendEventsFlag = false;
  48     private boolean stopFlag = false;
  49
  50     /**
  51      * Instantiates a new kafka event producer.
  52      *
  53      * @param topic the topic
  54      * @param sharedKafkaTestResource the kafka server address
  55      * @param eventCount the event count
  56      * @param xmlEvents the xml events
  57      * @param eventInterval the event interval
  58      */
  59     public KafkaEventProducer(final String topic, final SharedKafkaTestResource sharedKafkaTestResource,
  60                     final int eventCount, final boolean xmlEvents, final long eventInterval) {
  61         this.topic = topic;
  62         this.sharedKafkaTestResource = sharedKafkaTestResource;
  63         this.eventCount = eventCount;
  64         this.xmlEvents = xmlEvents;
  65         this.eventInterval = eventInterval;
  66
  67         producerThread = new Thread(this);
  68         producerThread.start();
  69     }
  70
  71     /*
  72      * (non-Javadoc)
  73      *
  74      * @see java.lang.Runnable#run()
  75      */
  76     @Override
  77     public void run() {
  78         final Producer<String, String> producer = sharedKafkaTestResource.getKafkaTestUtils()
  79                         .getKafkaProducer(StringSerializer.class, StringSerializer.class);
  80
  81         while (producerThread.isAlive() && !stopFlag) {
  82             ThreadUtilities.sleep(50);
  83
  84             if (sendEventsFlag) {
  85                 sendEventsToTopic(producer);
  86                 sendEventsFlag = false;
  87             }
  88         }
  89
  90         producer.close(1000, TimeUnit.MILLISECONDS);
  91     }
  92
  93     /**
  94      * Send events.
  95      */
  96     public void sendEvents() {
  97         sendEventsFlag = true;
  98     }
  99
 100     /**
 101      * Send events to topic.
 102      *
 103      * @param producer the producer
 104      */
 105     private void sendEventsToTopic(final Producer<String, String> producer) {
 106         System.out.println(KafkaEventProducer.class.getCanonicalName()
 107                         + ": sending events to Kafka server , event count " + eventCount + ", xmlEvents " + xmlEvents);
 108
 109         for (int i = 0; i < eventCount; i++) {
 110             System.out.println(KafkaEventProducer.class.getCanonicalName() + ": waiting " + eventInterval
 111                             + " milliseconds before sending next event");
 112             ThreadUtilities.sleep(eventInterval);
 113
 114             String eventString = null;
 115             if (xmlEvents) {
 116                 eventString = EventGenerator.xmlEvent();
 117             } else {
 118                 eventString = EventGenerator.jsonEvent();
 119             }
 120             producer.send(new ProducerRecord<String, String>(topic, "Event" + i + "Of" + eventCount, eventString));
 121             producer.flush();
 122             eventsSentCount++;
 123             System.out.println("****** Sent event No. " + eventsSentCount + " ******");
 124         }
 125         System.out.println(KafkaEventProducer.class.getCanonicalName() + ": completed");
 126     }
 127
 128     /**
 129      * Gets the events sent count.
 130      *
 131      * @return the events sent count
 132      */
 133     public long getEventsSentCount() {
 134         return eventsSentCount;
 135     }
 136
 137     /**
 138      * Shutdown.
 139      */
 140     public void shutdown() {
 141         System.out.println(KafkaEventProducer.class.getCanonicalName() + ": stopping");
 142
 143         stopFlag = true;
 144
 145         while (producerThread.isAlive()) {
 146             ThreadUtilities.sleep(10);
 147         }
 148
 149         System.out.println(KafkaEventProducer.class.getCanonicalName() + ": stopped");
 150     }
 151 }