This demo consists of the following projects:
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pizza-service a Flask app with Kafka support.
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sauce-service a basic Python app with Kafka.
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cheese-service a basic Python app with Kafka.
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meat-service a basic Python app with Kafka.
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veggie-service a basic Python app with Kafka.
The demo was built using Confluent Cloud, the Cloud-native service for Apache Kafka. If you don’t have an account on Confluent Cloud, you can set that up [here](https://www.confluent.io/confluent-cloud).
Before running this demo, you will need to update the config.properties file in each project. Replace the fields marked with < > using values from your Confluent Cloud cluster. Also, you will need to create 5 topics in Confluent Cloud. They can each have 1 partion (or more if you so desire): pizza, pizza-with-sauce, pizza-with-cheese, pizza-with-meat, and pizza-with-veggies.
Once all five services are up and running, you can issue the following curl command to send an order for 3 random pizzas.
curl -X POST http://localhost:5000/order/5
This will trigger a series of events which will result in a completed pizza order with the five pizzas, and it will return a UUID of that pizza order. Of course you can alter that last value in the URL to get a different number of pizzas. (I was a bit hungry when I wrote this.)
To see your pizzas in all their hot, delicious glory, run the following curl command using the UUID returned from the first call.
When you are done working with this demo project, you can delete these topics to avoid additional charges.
[Quik-start Guide](https://docs.confluent.io/cloud/current/get-started/index.html)
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[Quick-start Guide](https://developer.confluent.io/get-started/python)
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[Python Kafka Client](https://docs.confluent.io/clients-confluent-kafka-python/current/overview.html)
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[Python Kafka Articles](https://www.confluent.io/blog/tag/python/)