Lab 2 - TDD Aggregate Root - Create and Publish Kitchen Domain Events

1. Summary

When we conducted our Event Storm, we identified many important business events that happen within our Pizza Shop. It is the responsibility of our Aggregates to publish these events.

In this lab, we will publish the interesting events that occur within the Kitchen context.

We will complete 8 stories:

  1. When the cook starts preparing an order, publish an event.

  2. When the cook starts preparing a pizza, publish an event.

  3. When the cook finishes preparing a pizza, publish an event.

  4. When the cook starts baking a pizza, publish an event.

  5. When the cook starts baking an order, publish an event.

  6. When the assembler removes a pizza from the oven, publish an event.

  7. When the assembler starts assembling an order, publish an event.

  8. When the assembler finishes assembling an order, publish an event.

You can run com.mattstine.dddworkshop.pizzashop.suites.Lab2Suite to check your progress in this lab.

2. Instructions

  1. KitchenOrder and Pizza will be responsible for publishing events.

  2. Walk through each of the command methods that you completed in Lab 1 on these Aggregates, and publish the appropriate events. They all already exist within the kitchen package.

  3. If you’re looking for hints on how to publish an event, take a look at the Aggregates in the Ordering or Payments contexts.