examples/camel-example-kafka-avro/README.adoc

= Camel Kafka example

=== Introduction

An example which shows how to integrate Camel with Kafka avro  to make use of avro serialize/deserializer

start confluent schema registry but before this kafka server should be started:
./bin/schema-registry-start etc/schema-registry/schema-registry.properties

register_schema.py is simple custom python script to register the employee.avsc schema in confluent schema registry
python3.6 src/main/resources/register_schema.py http://localhost:8081 employees-avro src/main/resources/avro/employee.avsc
Schema Registry URL: http://localhost:8081
Topic: employees-avro
Schema file: src/main/resources/avro/employee.avsc
Success


[camel-example-kafka-avro]$ curl --noproxy '*' http://localhost:8081/subjects/employees-avro-value/versions/1
{"subject":"employees-avro-value","version":1,"id":2,"schema":"{\"type\":\"record\",\"name\":\"Employee\",\"namespace\":\"com.example.kafkatutorials\",\"fields\":[{\"name\":\"firstName\",\"type\":\"string\"},{\"name\":\"lastName\",\"type\":\"string\"},{\"name\":\"birthDate\",\"type\":\"long\"}]}"}

To delete:
curl -X DELETE http://localhost:8081/subjects/topic-value/versions/version-no

=== Preparing Kafka

This example requires that Kafka Server is up and running.

    $ ${KAFKA}/bin/zookeeper-server-start.sh ${KAFKA}/config/zookeeper.properties

    $ ${KAFKA}/bin/kafka-server-start.sh ${KAFKA}/config/server.properties

You will need to create following topics before you run the examples.

On windows run

    
    $ ${KAFKA}/bin/kafka-topics.bat --create --zookeeper <zookeeper host ip>:<port> --replication-factor 1 --partitions 1 --topic employees-avro

On linux run

    
    $ ${KAFKA}/bin/kafka-topics.sh --create --zookeeper <zookeeper host ip>:<port> --replication-factor 1 --partitions 1 --topic employees-avro


=== Build

You will need to compile this example first:

    $ mvn compile

=== Run

Run the consumer first in separate shell 

    $ mvn spring-boot:run


camel-context.xml file has both kafka-producer and kafka-consumer routes defined to produce/consume messages to topic my-topic.

Press `Ctrl-C` to exit.

=== Configuration

You can configure the details in the file:
  `src/main/resources/application.properties`

You can enable verbose logging by adjusting the `src/main/resources/log4j2.properties`
  file as documented in the file.

=== Forum, Help, etc

If you hit an problems please let us know on the Camel Forums
	<http://camel.apache.org/discussion-forums.html>

Please help us make Apache Camel better - we appreciate any feedback you may
have.  Enjoy!


The Camel riders!