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AWS Serverless application (TypeScript) project starter

yarn workspace based AWS CDK and Lambda Function project template.

  • Node.js (12.x)

Monorepo contains following workspaces...

  • app-node: Lambda Function (TypeScript)
  • infra-aws: AWS CDK infra (TypeScript)
  • site-react: React SPA

Getting Started

Server

First, you should to switch aws account on your terminal app.

Using:

and go deploy greeting server application:

yarn workspace infra-aws cdk bootstrap ###first use of aws cdk, in your aws account.
yarn deploy

You can invoke greeting function after deploy.

aws lambda invoke \
--payload '{"message": "Hi, how do you feel?"}' \
--function-name <greeting function arn> \
--cli-binary-format raw-in-base64-out \
out.txt

Example:

aws lambda invoke \
--payload '{"message": "Hi, how do you feel?"}' \
--function-name 'arn:aws:lambda:ap-northeast-1:12345667890:function:getGreetingReply-function' \
--cli-binary-format raw-in-base64-out \
out.txt

less out.txt

{"reply":"Fine, and you? > Hi, how do you feel?"}⏎

AppSync GraphQL

You can request greeting GraphQL API via AWS Console GraphiQL.

aws_console_appsync.png

Test?

unit testing

yarn test:unit@app
yarn test:unit@infra

Will testing local files.

E2E testing

yarn deploy
yarn test:e2e@app

Will testing deployed Lambda Function invoke.

React App

Create React App and setup apollo client. We recommend set up your React application by yourself. Following are our examples.

# re-install packages for 'nohoist'
yarn create react-app packages/site-react --template typescript
rm -r node_modules/
rm -r packages/app-node/node_modules/
rm -r packages/infra-aws/node_modules/
rm -r yarn.lock

yarn install

Then, we can start react app.

yarn workspace site-react start

Rename

Finally, rename your application.

  • package.json
-  "name": "template-aws-cdk-typescript-serverless-app",
+  "name": "good-health",
  "version": "0.1.0",
  • tsas-cdk.json

This name uses generate aws resource name, for instance, when appName is greeting-service, its Lambda Function's name: ${env}-greeting-service-${FunctionName}-function.

  • packages/infra-aws/tsas-cdk.config.json
  • packages/app-node/tsas-cdk.config.json
{
-  "appName": "greeting-service",
+  "appName": "goot-health",
  "region": "ap-northeast-1"
}

then, next deploy rename function to ${env}-greeting-service-${FunctionName}-function.