aiokafka-foundation-kit

Create a fully functional mini-application that leverages the 'aiokafka-foundation-kit' package to manage asynchronous communication between microservices using Apache Kafka. Your application will serve as a simple event-driven system where different services can publish events to a topic and other services can subscribe to these topics to listen for events and perform actions accordingly. Here’s a step-by-step guide on what your application should achieve and how it should be structured:

1. **Setup**: Begin by setting up your development environment. Ensure you have Python installed and create a virtual environment for your project. Install the necessary packages including 'aiokafka-foundation-kit', 'aiokafka', and any other dependencies required.
2. **Configuration**: Configure the Kafka broker details in your application settings. Use the configuration capabilities provided by 'aiokafka-foundation-kit' to set up the connection parameters such as bootstrap servers, security protocols, etc.
3. **Event Publisher Service**: Develop a service that publishes events to a specific Kafka topic. This service should accept input from the user or another source and convert it into an event message suitable for Kafka. Utilize the factory methods from 'aiokafka-foundation-kit' to create the producer instance efficiently.
4. **Event Consumer Service**: Implement a consumer service that subscribes to the same Kafka topic. This service should consume messages from the topic and handle them according to the business logic defined for the application. Again, use the 'aiokafka-foundation-kit' to set up the consumer efficiently.
5. **Dependency Injection (DI)**: Integrate dependency injection into your application using the DI provider features offered by 'aiokafka-foundation-kit'. This will help in managing the lifecycle of producers and consumers more effectively.
6. **Monitoring and Tracing**: Enable OpenTelemetry in your application to monitor and trace the events being published and consumed. Use the integration provided by 'aiokafka-foundation-kit' to automatically instrument Kafka operations for better observability.
7. **Testing**: Write unit tests and integration tests for both the publisher and consumer services. Ensure that the tests cover scenarios like successful event publishing, message consumption, error handling, and retries.
8. **Documentation**: Document your code thoroughly and provide instructions on how to run and test the application. Include setup steps, configuration examples, and explanations of the main components.

Your final application should demonstrate the power of asynchronous programming with Kafka and showcase the ease of use provided by 'aiokafka-foundation-kit' in building robust, scalable, and observable microservice architectures.