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Chapter 11. Kafka Streams API overview

The Kafka Streams API allows applications to receive data from one or more input streams, execute complex operations like mapping, filtering or joining, and write the results into one or more output streams. It is part of the kafka-streams JAR package that is available in the Red Hat Maven repository.

This procedure shows you how to add the AMQ Streams Java clients as a dependency to your Maven project.

Prerequisites

  • A Maven project with an existing pom.xml.

Procedure

  1. Add the Red Hat Maven repository to the <repositories> section of your pom.xml file. 

    <?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

    <!-- ... -->

    <repositories>
        <repository>
            <id>redhat-maven</id>
            <url>https://maven.repository.redhat.com/ga/</url>
        </repository>
    </repositories>

    <!-- ... -->

</project>
    Copy to Clipboard Toggle word wrap

  2. Add kafka-streams to the <dependencies> section of your pom.xml file. 

    <?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

    <!-- ... -->

    <dependencies>
        <dependency>
            <groupId>org.apache.kafka</groupId>
            <artifactId>kafka-streams</artifactId>
            <version>2.4.0.redhat-00005</version>
        </dependency>
    </dependencies>

    <!-- ... -->
</project>
    Copy to Clipboard Toggle word wrap
  3. Build your Maven project.
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