Created
August 15, 2024 20:04
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Lambda, DynamoDB, API Gateway Stack
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| import * as cdk from 'aws-cdk-lib'; | |
| import * as apigateway from 'aws-cdk-lib/aws-apigateway'; | |
| import * as dynamodb from 'aws-cdk-lib/aws-dynamodb'; | |
| import * as iam from 'aws-cdk-lib/aws-iam'; | |
| import * as lambda from 'aws-cdk-lib/aws-lambda'; | |
| import * as pylambda from '@aws-cdk/aws-lambda-python-alpha'; | |
| import * as lambdaEventSources from 'aws-cdk-lib/aws-lambda-event-sources'; | |
| import * as sqs from 'aws-cdk-lib/aws-sqs'; | |
| import { Construct } from 'constructs'; | |
| export class SevenSeasStack extends cdk.Stack { | |
| constructor(scope: Construct, id: string, props?: cdk.StackProps) { | |
| super(scope, id, props); | |
| // imports | |
| const queue = sqs.Queue.fromQueueArn(this, 'Queue', 'arn:aws:sqs:us-west-2:824852318651:BuildOnQueue'); | |
| const table = new dynamodb.Table(this, 'IttyBittyTable', { | |
| partitionKey: { name: 'name', type: dynamodb.AttributeType.STRING }, | |
| tableName: 'ittybitty', | |
| }); | |
| const towerLambda = new pylambda.PythonFunction(this, 'TowerFunction', { | |
| entry: 'lambda/tower', | |
| runtime: lambda.Runtime.PYTHON_3_12, | |
| index: 'tower.py', | |
| handler: 'lambda_handler', | |
| }); | |
| // Add the event source mapping | |
| towerLambda.addEventSource(new lambdaEventSources.SqsEventSource(queue, { | |
| batchSize: 10, | |
| maxBatchingWindow: cdk.Duration.seconds(60), | |
| })); | |
| queue.addToResourcePolicy(new iam.PolicyStatement({ | |
| effect: iam.Effect.ALLOW, | |
| principals: [new iam.ServicePrincipal('lambda.amazonaws.com')], | |
| actions: ['sqs:ReceiveMessage', 'sqs:DeleteMessage', 'sqs:GetQueueAttributes'], | |
| resources: [queue.queueArn], | |
| })); | |
| const api = new apigateway.RestApi(this, 'SevenSeasApi'); | |
| const hubertResource = api.root.addResource('hubert'); | |
| const hubertMethod = hubertResource.addMethod('POST', new apigateway.Integration({ | |
| type: apigateway.IntegrationType.AWS, | |
| integrationHttpMethod: 'POST', | |
| uri: 'arn:aws:apigateway:us-west-2:dynamodb:action/PutItem', | |
| options: { | |
| passthroughBehavior: apigateway.PassthroughBehavior.WHEN_NO_MATCH, | |
| credentialsRole: new iam.Role(this, 'ApiGatewayDynamoDbRole', { | |
| assumedBy: new iam.ServicePrincipal('apigateway.amazonaws.com'), | |
| roleName: 'ApiGatewayDynamoDbRole', | |
| inlinePolicies: { | |
| 'DynamoDBPutItemPolicy': new iam.PolicyDocument({ | |
| statements: [ | |
| new iam.PolicyStatement({ | |
| effect: iam.Effect.ALLOW, | |
| actions: ['dynamodb:PutItem'], | |
| resources: [table.tableArn], | |
| }), | |
| ], | |
| }), | |
| }, | |
| }), | |
| integrationResponses: [ | |
| { | |
| statusCode: '200', | |
| responseTemplates: { | |
| 'application/json': ` | |
| #set($inputRoot = $input.path('$')) | |
| { | |
| "message": "Item added successfully" | |
| }`, | |
| }, | |
| responseParameters: { | |
| 'method.response.header.Access-Control-Allow-Origin': "'*'" | |
| } | |
| }, | |
| { | |
| selectionPattern: '4\\d{2}', | |
| statusCode: '400', | |
| responseTemplates: { | |
| 'application/json': JSON.stringify({ | |
| message: 'Error: $input.path(\'$.errorMessage\')' | |
| }) | |
| }, | |
| responseParameters: { | |
| 'method.response.header.Access-Control-Allow-Origin': "'*'" | |
| } | |
| } | |
| ], | |
| requestTemplates: { | |
| 'application/json': `{ | |
| "TableName": "${table.tableName}", | |
| "Item": { | |
| "name": { "S": "$input.path('$.name')" }, | |
| "creation_date": { "S": "$input.path('$.creation_date')" }, | |
| "level": { "N": "$input.path('$.level')" }, | |
| "abilities": { | |
| "M": { | |
| "security": { "N": "$input.path('$.abilities.security')" }, | |
| "elasticity": { "N": "$input.path('$.abilities.elasticity')" }, | |
| "durability": { "N": "$input.path('$.abilities.durability')" }, | |
| "versioning": { "BOOL": "$input.path('$.abilities.versioning')" }, | |
| "filtered": { "BOOL": "$input.path('$.abilities.filtered')" } | |
| } | |
| }, | |
| "inventory": { "L": [{ "S": "$input.path('$.inventory[0]')" }] }, | |
| "services_visited": { "L": [ | |
| { "S": "$input.path('$.services_visited[0]')" }, | |
| { "S": "$input.path('$.services_visited[1]')" } | |
| ]}, | |
| "events": { | |
| "L": [ | |
| { "M": { | |
| "multiPartUploadFailed": { "S": "$input.path('$.events[0].multiPartUploadFailed')" } | |
| }}, | |
| { "M": { | |
| "sam_9010SolvedTheProblem": { "S": "$input.path('$.events[1].sam_9010SolvedTheProblem')" } | |
| }} | |
| ] | |
| } | |
| } | |
| }` | |
| }, | |
| }})); | |
| hubertMethod.addMethodResponse({ | |
| statusCode: '200', | |
| responseParameters: { | |
| 'method.response.header.Access-Control-Allow-Origin': true, | |
| }, | |
| responseModels: { | |
| 'application/json': apigateway.Model.EMPTY_MODEL, | |
| } | |
| }); | |
| hubertMethod.addMethodResponse({ | |
| statusCode: '400', | |
| responseParameters: { | |
| 'method.response.header.Access-Control-Allow-Origin': true, | |
| }, | |
| responseModels: { | |
| 'application/json': apigateway.Model.ERROR_MODEL, | |
| } | |
| }); | |
| } | |
| } |
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