https://github.com/pactflow/example-consumer-java-kafka

Example Java Kafka Consumer
https://github.com/pactflow/example-consumer-java-kafka

example

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Example Java Kafka Consumer

• Host: GitHub
• URL: https://github.com/pactflow/example-consumer-java-kafka
• Owner: pactflow
• License: mit
• Created: 2020-06-15T06:49:12.000Z (over 5 years ago)
• Default Branch: master
• Last Pushed: 2025-04-09T05:08:43.000Z (10 months ago)
• Last Synced: 2025-04-15T06:48:15.108Z (9 months ago)
• Topics: example
• Language: Java
• Size: 311 KB
• Stars: 6
• Watchers: 10
• Forks: 14
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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# Example Java Kafka Consumer

![Build](https://github.com/pactflow/example-consumer-java-kafka/workflows/Build/badge.svg)

[![Can I deploy Status](https://testdemo.pactflow.io/pacticipants/pactflow-example-consumer-java-kafka/branches/master/latest-version/can-i-deploy/to-environment/production/badge)](https://testdemo.pactflow.io/pacticipants/pactflow-example-consumer-java-kafka)

![Pact Status](https://testdemo.pactflow.io/pacts/provider/pactflow-example-provider-java-kafka/consumer/pactflow-example-consumer-java-kafka/latest/badge) (latest pact)

![Pact Status](https://testdemo.pactflow.io/pacts/provider/pactflow-example-provider-java-kafka/consumer/pactflow-example-consumer-java-kafka/latest/master/badge) (master/master pact)

This is an example of a Java kafka consumer that uses Pact, [PactFlow](https://pactflow.io) and GitHub Actions to ensure that it is compatible with the expectations its consumers have of it.

The project uses a Makefile to simulate a very simple build pipeline with two stages - test and deploy.

See the canonical consumer example here: https://github.com/pactflow/example-consumer

See also the full [PactFlow CI/CD Workshop](https://docs.pactflow.io/docs/workshops/ci-cd) for which this can be substituted in as the "consumer".

In the following diagram, we'll be testing the "Product API", a simple HTTP service that exposes product information as a REST API, which is fed events from an Event API on the `product` topic.

![Kafka Architecture](docs/kafka.png "Kafka Architecture")

## Pre-requisites

**Software**:

https://docs.pactflow.io/docs/workshops/ci-cd/set-up-ci/prerequisites/

## Usage

* Running the API and kafka listener locally: `make start`

* Producing test events into the `product` topic: `make test-events`

* Retrieve latest products: `curl localhost:8080/products`