In this chapter, you will continue building your “Hello, World!” application by adding object storage and an event notification to trigger your “Hello, CDK” function. This will constitute a basic event-driven architecture, allowing you to upload a document and trigger an event. You will build the components of this project in three different ways so that you can learn about Level 1, 2, and 3 (L1, L2, and L3) CDK constructs. At the end of this project, you will have established the first event-driven process for your Home Energy Coach application.
Through this project, you will learn:
How to deploy AWS resources using L1, L2, and L3 constructs
How to connect multiple CDK constructs into an event-driven architecture
This is how it all gets started. In this project segment, we are going to set up the most basic building block of CDK that will take data from S3 and print a message. While Figure 3-1 is simple, we will build from here over the coming chapters.
Figure 3-1. The starting place for the “Hello, CDK” application
These are the three steps we’ll follow:
S3 bucket to upload raw data
Event notification to trigger Lambda function
Lambda function to print “Hello, CDK”
Note that you will construct this architecture and revise it ...
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