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Apache Kafka Quick Start Guide

You're reading from   Apache Kafka Quick Start Guide Leverage Apache Kafka 2.0 to simplify real-time data processing for distributed applications

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Product type Paperback
Published in Dec 2018
Publisher Packt
ISBN-13 9781788997829
Length 186 pages
Edition 1st Edition
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Author (1):
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Raúl Estrada Raúl Estrada
Author Profile Icon Raúl Estrada
Raúl Estrada
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Toc

Table of Contents (10) Chapters Close

Preface 1. Configuring Kafka FREE CHAPTER 2. Message Validation 3. Message Enrichment 4. Serialization 5. Schema Registry 6. Kafka Streams 7. KSQL 8. Kafka Connect 9. Other Books You May Enjoy

Running the processing engine

The ProcessingEngine class coordinates the Reader and Writer classes. It contains the main method to coordinate them. Create a new file called ProcessingEngine.java in the src/main/java/monedero/ directory and copy therein the code in Listing 2.8.

The following is the content of Listing 2.8, ProcessingEngine.java:

package monedero;
public class ProcessingEngine {
public static void main(String[] args) {
String servers = args[0];
String groupId = args[1];
String sourceTopic = args[2];
String targetTopic = args[3];
Reader reader = new Reader(servers, groupId, sourceTopic);
Writer writer = new Writer(servers, targetTopic);
reader.run(writer);
}
}
Listing 2.8: ProcessingEngine.java

ProcessingEngine receives four arguments from the command line:

  • args[0] servers, the host and port of the Kafka broker
  • args[1] groupId, the consumer group...
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