Setup a CDK project

First of all, install the CDK CLI by running the following command from your terminal.

npm install -g aws-cdk

Initialize project

Now, let’s create a folder within our sam-app directory where the pipeline code will reside.

cd ~/environment/sam-app
mkdir pipeline
cd pipeline

Initialize a new CDK project within the pipeline folder by running the following command:

cdk init --language typescript

Now install the CDK modules that we will be using to build a pipeline:

npm install --save @aws-cdk/aws-codedeploy @aws-cdk/aws-codebuild
npm install --save @aws-cdk/aws-codecommit @aws-cdk/aws-codepipeline-actions
npm install --save @aws-cdk/aws-s3

After a few seconds, our new CDK project should look like this:

CdkInit

Project structure

At this point, your project should have the structure below (only the most relevant files and folders are shown). Within the CDK project, the main file you will be interacting with is the pipeline-stack.ts. Don’t worry about the rest of the files for now.

sam-app                         # SAM application root
├── hello-world                 # Lambda code
├── samconfig.toml              # Config file for manual deployments
├── template.yaml               # SAM template
└── pipeline                    # CDK project root
    └── lib
        └── pipeline-stack.ts   # Pipeline definition
    └── bin
        └── pipeline.ts         # Entry point for CDK project
    ├── cdk.json
    ├── tsconfig.json
    ├── package.json
    └── jest.config.js

Modify stack name

Open the bin/pipeline.ts file, which is your entry point to the CDK project, and change the name of the stack to sam-app-cicd.

CdkEntryPoint

Save the file.