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Kafka Connect source connector for RabbitMQ

kafka-connect-rabbitmq-source is a Kafka Connect source connector for copying data from RabbitMQ into Apache Kafka.

The connector is supplied as source code which you can easily build into a JAR file.

Installation

  1. Clone the repository with the following command:
git@github.com:ibm-messaging/kafka-connect-rabbitmq-source.git
  1. Change directory to the kafka-connect-mq-source directory:
cd kafka-connect-mq-source
  1. Build the connector using Maven:
mvn clean package

  1. Setup a local zookeeper service running on port 2181 (default)

  2. Setup a local kafka service running on port 9092 (default)

  3. Setup a local rabbitmq service running on port 15672 (default)

  4. Copy the compiled jar file into the /usr/local/share/java/ directory:

cp target/kafka-connect-rabbitmq-source-1.0-SNAPSHOT-jar-with-dependencies.jar /usr/local/share/java/
  1. Copy the connect-standalone.properties and rabbitmq-source.properties files into the /usr/local/etc/kafka/ directory.
cp config/* /usr/local/etc/kafka/
  1. Go to the kafka installation directory /usr/local/etc/kafka/:
cd /usr/local/etc/kafka/
  1. Set the CLASSPATH value to /usr/local/share/java/ as follows:
export CLASSPATH=/usr/local/share/java/

Running in Standalone Mode

Run the following command to start the source connector service in standalone mode:

connect-standalone connect-standalone.properties rabbitmq-source.properties

Running in Distributed Mode

  1. In order to run the connector in distributed mode you must first register the connector with Kafka Connect service by creating a JSON file in the format below:
{
    "name": "RabbitMQSourceConnector",
    "config": {
        "connector.class": "com.ibm.eventstreams.connect.rabbitmqsource.RabbitMQSourceConnector",
        "tasks.max": "10",
        "kafka.topic" : "kafka_test",
        "rabbitmq.queue" : "rabbitmq_test",
        "rabbitmq.prefetch.count": "500",
        "rabbitmq.automatic.recovery.enabled": "true",
        "rabbitmq.network.recovery.interval.ms": "10000",
        "rabbitmq.topology.recovery.enabled": "true"
    }
}

A version of this file, config/rabbitmq-source.json, is located in the config directory. To register the connector do the following:

  1. Run the following command to the start the source connector service in distributed mode:
connect-distributed connect-distributed.properties
  1. Run the following command to register the connector with the Kafka Connect service:
curl -s -X POST -H 'Content-Type: application/json' --data @config/rabbitmq-source.json http://localhost:8083/connectors

You can verify that your connector was properly registered by going to http://localhost:8083/connectors which should return a full list of available connectors. This JSON connector profile will be propegated to all workers across the distributed system. After following these steps your connector will now run in distributed mode.

Configuration

Create a target kafka topic named kafka_test:

kafka-topics --create --topic kafka_test --partitions 3 --replication-factor 1 --zookeeper 127.0.0.1:2181

Go to the RabbitMQ site at the following URL: http://localhost:15672/

Create a new queue rabbitmq_test.

Kafka Record Key

When sending message to RabbitMQ, include the key from the Kafka record in the headers as "keyValue". (Only string keys are supported at the moment) If used in combination with JDBC sink connector, include the ID field name as "keyName" in the headers as well (e.g. "transationId"). The keyName will be used as the primary key when inserting a record.

Testing

Publish a new item to your RabbitMQ queue rabbitmq_test from the http://localhost:15672 webui console.

Type in the following to view the contents of the kafka_test topic on kafka.

kafka-console-consumer --topic kafka_test --from-beginning --bootstrap-server 127.0.0.1:9092

Issues and contributions

For issues relating specifically to this connector, please use the GitHub issue tracker. If you do want to submit a Pull Request related to this connector, please read the contributing guide first to understand how to sign your commits.

License

Copyright 2020 IBM Corporation

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

(http://www.apache.org/licenses/LICENSE-2.0)

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.The project is licensed under the Apache 2 license.