This project shows how AWS CDK, AWS SAM and AWS Chalice can be used together to deliver a service using CDK for building the broader service infrastructure, Chalice as developer-friendly Python serverless microframework and SAM as integration point between the two.
The service is based on Amazon API Gateway and AWS Lambda. The web API provides basic CRUD operations for managing users in a DynamoDB table.
See Getting Started With the AWS CDK for additional details and prerequisites
# Install the CDK CLI
npm install -g aws-cdk
# Clone the code
git clone https://github.com/alexpulver/aws-cdk-sam-chalice
cd aws-cdk-sam-chalice
# Create Python virtual environment and install the dependencies
python3 -m venv .venv
source .venv/bin/activate
pip install -r infra/requirements.txt
pip install -r web-api/requirements.txtThe WebApiDev stack uses your current AWS profile account and credentials.
cd infra
cdk synth
cdk deploy WebApiDevExample output for cdk deploy ...:
WebApiDev.UsersTableName = WebApiDev-UsersTable9725E9C8-BTQT7EIOV1UC
WebApiDev.APIHandlerArn = arn:aws:lambda:eu-west-1:123456789012:function:WebApiDev-APIHandler-13LVIC507UIAN
WebApiDev.APIHandlerName = WebApiDev-APIHandler-13LVIC507UIAN
WebApiDev.RestAPIId = letbml5594
WebApiDev.EndpointURL = https://letbml5594.execute-api.eu-west-1.amazonaws.com/v1/
Do not forget to delete the stack once done with testing to avoid unexpected charges:
cdk destroy WebApiDevBelow are examples that show the available resources and how to use them:
curl \
-H "Content-Type: application/json" \
-X POST \
-d '{"username":"john", "email":"[email protected]"}' \
https://API_ID.execute-api.REGION.amazonaws.com/v1/users
curl \
-H "Content-Type: application/json" \
-X GET \
https://API_ID.execute-api.REGION.amazonaws.com/v1/users/john
curl \
-H "Content-Type: application/json" \
-X PUT \
-d '{"country":"US", "state":"WA"}' \
https://API_ID.execute-api.REGION.amazonaws.com/v1/users/john
curl \
-H "Content-Type: application/json" \
-X DELETE \
https://API_ID.execute-api.REGION.amazonaws.com/v1/users/john
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