☁️ Wrap and Deploy cart-api app to AWS Lambda via CDK

.env.development

@@ -0,0 +1,5 @@
+DB_HOST=localhost
+DB_PORT=5432
+DB_USERNAME=postgres
+DB_PASSWORD=your_password
+DB_NAME=database-1

.gitignore

@@ -38,3 +38,6 @@ lerna-debug.log*
 !.elasticbeanstalk/*.global.yml
 
 .env
+
+.temp.*
+cdk.out/

README.md

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-# nodejs-aws-cart-api
+# Cart API Service
 
+## API Endpoints
+
+### Base URL
+
+https://clv4uq63tjqjx52sqzia33d63e0uluqz.lambda-url.eu-west-1.on.aws
+
+
+### Health Check
+- **Endpoint**: `/`
+- **Method**: GET
+- **Description**: Checks the health status of the service
+- **Example Request**:
+  ```bash
+  curl https://clv4uq63tjqjx52sqzia33d63e0uluqz.lambda-url.eu-west-1.on.aws/
+
+
+  {"statusCode":200,"message":"OK"}
+```
+```
+Cart model:
+
+carts:
+id - uuid (Primary key)
+user_id - uuid, not null (It's not Foreign key, because there is no user entity in DB)
+created_at - date, not null
+updated_at - date, not null
+status - enum ("OPEN", "ORDERED")
+
+Cart Item model:
+
+cart_items:
+cart_id - uuid (Foreign key from carts.id)
+product_id - uuid
+count - integer (Number of items in a cart)
+```
 ## Installation
 
 ```bash

cdk.json

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+{
+  "app": "npx ts-node deploy/App.ts"
+}

deploy/App.ts

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+import * as cdk from 'aws-cdk-lib';
+import { Stack } from './Stack';
+
+const app = new cdk.App();
+
+new Stack(app, 'NodejsAwsCartApiStack', {
+  env: {
+    region: process.env.CDK_DEFAULT_REGION,
+  },
+});

deploy/Stack.ts

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+import * as cdk from 'aws-cdk-lib';
+import * as lambda from 'aws-cdk-lib/aws-lambda';
+import { Construct } from 'constructs';
+import { NodejsFunction } from 'aws-cdk-lib/aws-lambda-nodejs';
+import * as dotenv from 'dotenv';
+
+dotenv.config();
+
+export class Stack extends cdk.Stack {
+  constructor(scope: Construct, id: string, props?: cdk.StackProps) {
+    super(scope, id, props);
+
+    const server = new NodejsFunction(this, 'server', {
+      functionName: 'nodejs-aws-cart-api',
+      runtime: lambda.Runtime.NODEJS_20_X,
+      entry: 'dist/main.lambda.js',
+      memorySize: 1024,
+      timeout: cdk.Duration.seconds(30),
+      bundling: {
+        minify: true,
+        target: 'node20',
+        externalModules: [
+          '@nestjs/microservices',
+          '@nestjs/websockets',
+          'class-transformer',
+          'class-validator',
+        ],
+      },
+      environment: {
+        DB_HOST: process.env.DB_HOST,
+        DB_PORT: process.env.DB_PORT,
+        DB_USERNAME: process.env.DB_USERNAME,
+        DB_PASSWORD: process.env.DB_PASSWORD,
+        DB_NAME: process.env.DB_NAME,
+      },
+    });
+
+    // lambda via HTTP URL
+    const { url } = server.addFunctionUrl({
+      authType: lambda.FunctionUrlAuthType.NONE,
+      cors: {
+        allowedOrigins: ['*'],
+        allowedHeaders: ['*'],
+        allowedMethods: [lambda.HttpMethod.ALL],
+        maxAge: cdk.Duration.days(1),
+      },
+    });
+
+    new cdk.CfnOutput(this, 'Url', {
+      value: url,
+    });
+  }
+}

nest-cli.json

@@ -1,4 +1,8 @@
 {
   "collection": "@nestjs/schematics",
-  "sourceRoot": "src"
+  "sourceRoot": "src",
+  "compilerOptions": {
+    "deleteOutDir": true,
+    "webpack": false
+  }
 }