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src/main/java/io/bootique/example/kafka/producer
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README.md

Build Status

bootique-kafka-producer

An example of the producer to send streams of data to topics in the Kafka cluster integrated for Bootique.

Also consider an example of Kafka-consumer.

For additional help/questions about this example send a message to Bootique forum.

Prerequisites

  • Java 1.8 or newer.
  • Apache Maven.

Build the Demo

Here is how to build it:

git clone git@github.com:bootique-examples/bootique-kafka-producer.git
cd bootique-kafka-producer
mvn package

Run the Demo

Now you can check the options available in your app:

java -jar target/bootique-kafka-producer-0.0.1-SNAPSHOT.jar --help

Option                                              Description
------                                              -----------    
-b host:port, --bootstrap-server=host:port          Single Kafka bootstrap server. Can be specified multiple times.
                                                    Optional. If omitted, will be read from YAML or environment variable
                                                        BQ_KAFKACLIENT_BOOTSTRAPSERVERS_DEFAULT.

-c yaml_location, --config=yaml_location            Specifies YAML config location, which can be a file path or a URL.

-h, --help                                          Prints this message.

-H, --help-config                                   Prints information about application modules and their configuration
                                                        options.

-p, --producer

-t topic_name, --topic=topic_name                   Kafka topic to write data to.

To test this example, you will need a Kafka broker release 0.10.0.0 and a topic to write some string data into it. Run Zookeeper and Kafka broker both on localhost from Kafka root directory:

bin/zookeeper-server-start.sh config/zookeeper.properties

bin/kafka-server-start.sh config/server.properties

Run kafka-console-consumer.sh script to read string data from a topic:

bin/kafka-console-consumer.sh --zookeeper localhost:2181 --topic topic 

Run the producer:

java -jar target/bootique-kafka-producer-0.0.1-SNAPSHOT.jar --bootstrap-server=localhost:9092 --topic=topic