aws-solutions-constructs.aws-fargate-dynamodb 2.12.0

CDK Constructs for AWS Fargate to Amazon DynamoDB integration

aws-fargate-dynamodb module

---

All classes are under active development and subject to non-backward compatible changes or removal in any future version. These are not subject to the Semantic Versioning model. This means that while you may use them, you may need to update your source code when upgrading to a newer version of this package.

---

Reference Documentation:	https://docs.aws.amazon.com/solutions/latest/constructs/

Language	Package
Python	aws_solutions_constructs.aws_fargate_dynamodb
Typescript	@aws-solutions-constructs/aws-fargate-dynamodb
Java	software.amazon.awsconstructs.services.fargatedynamodb

Overview

This AWS Solutions Construct implements an AWS Fargate service that can write/read to an Amazon DynamoDB table

Here is a minimal deployable pattern definition:

Typescript

import { Construct } from 'constructs';
import { Stack, StackProps } from 'aws-cdk-lib';
import { FargateToDynamoDB, FargateToDynamoDBProps } from '@aws-solutions-constructs/aws-fargate-dynamodb';

const constructProps: FargateToDynamoDBProps = {
  publicApi: true,
  ecrRepositoryArn: "arn:aws:ecr:us-east-1:123456789012:repository/your-ecr-repo",
};

new FargateToDynamoDB(stack, 'test-construct', constructProps);

Python

from aws_solutions_constructs.aws_fargate_dynamodb import FargateToDynamoDB, FargateToDynamoDBProps
from aws_cdk import (
    Stack
)
from constructs import Construct

FargateToDynamoDB(self, 'test_construct',
            public_api=True,
            ecr_repository_arn="arn:aws:ecr:us-east-1:123456789012:repository/your-ecr-repo")

Java

import software.constructs.Construct;

import software.amazon.awscdk.Stack;
import software.amazon.awscdk.StackProps;
import software.amazon.awsconstructs.services.fargatedynamodb.*;

new FargateToDynamoDB(this, "test-construct", new FargateToDynamoDBProps.Builder()
        .publicApi(true)
        .ecrRepositoryArn("arn:aws:ecr:us-east-1:123456789012:repository/your-ecr-repo")
        .build());

Pattern Construct Props

Name	Type	Description
publicApi	boolean	Whether the construct is deploying a private or public API. This has implications for the VPC.
vpcProps?	ec2.VpcProps	Optional custom properties for a VPC the construct will create. This VPC will be used by any Private Hosted Zone the construct creates (that's why loadBalancerProps and privateHostedZoneProps can't include a VPC). Providing both this and existingVpc is an error.
existingVpc?	ec2.IVpc	An existing VPC in which to deploy the construct. Providing both this and vpcProps is an error. If the client provides an existing load balancer and/or existing Private Hosted Zone, those constructs must exist in this VPC.
clusterProps?	ecs.ClusterProps	Optional properties to create a new ECS cluster. To provide an existing cluster, use the cluster attribute of fargateServiceProps.
ecrRepositoryArn?	string	The arn of an ECR Repository containing the image to use to generate the containers. Either this or the image property of containerDefinitionProps must be provided. format: arn:aws:ecr:region:account number:repository/Repository Name
ecrImageVersion?	string	The version of the image to use from the repository. Defaults to 'Latest'
containerDefinitionProps?	ecs.ContainerDefinitionProps | any	Optional props to define the container created for the Fargate Service (defaults found in fargate-defaults.ts)
fargateTaskDefinitionProps?	ecs.FargateTaskDefinitionProps | any	Optional props to define the Fargate Task Definition for this construct (defaults found in fargate-defaults.ts)
fargateServiceProps?	ecs.FargateServiceProps | any	Optional values to override default Fargate Task definition properties (fargate-defaults.ts). The construct will default to launching the service is the most isolated subnets available (precedence: Isolated, Private and Public). Override those and other defaults here.
existingFargateServiceObject?	ecs.FargateService	A Fargate Service already instantiated (probably by another Solutions Construct). If this is specified, then no props defining a new service can be provided, including: ecrImageVersion, containerDefinitionProps, fargateTaskDefinitionProps, ecrRepositoryArn, fargateServiceProps, clusterProps
existingContainerDefinitionObject?	ecs.ContainerDefinition	A container definition already instantiated as part of a Fargate service. This must be the container in the existingFargateServiceObject
dynamoTableProps?	dynamodb.TableProps	Optional user provided props to override the default props for DynamoDB Table.
existingTableInterface?	dynamodb.ITable	Existing instance of DynamoDB table object or interface, providing both this and dynamoTableProps will cause an error.
tablePermissions?	string	Optional table permissions to grant to the Fargate service. One of the following may be specified: All, Read, ReadWrite, Write.
tableArnEnvironmentVariableName?	string	Optional Name for the container environment variable set to the ARN for the DynamoDB table. Default: DYNAMODB_TABLE_ARN
tableEnvironmentVariableName?	string	Optional Name for the container environment variable set to the DynamoDB table name. Default: DYNAMODB_TABLE_NAME

Pattern Properties

Name	Type	Description
vpc	ec2.IVpc	The VPC used by the construct (whether created by the construct or provided by the client)
service	ecs.FargateService	The AWS Fargate service used by this construct (whether created by this construct or passed to this construct at initialization)
container	ecs.ContainerDefinition	The container associated with the AWS Fargate service in the service property.
dynamoTableInterface	dynamodb.ITable	Returns an instance of dynamodb.ITable created by the construct or the interface provided in existingTableInterface.
dynamoTable?	dynamodb.Table	Returns an instance of dynamodb.Table created by the construct. IMPORTANT: If existingTableInterface was provided in Pattern Construct Props, this property will be undefined.

Default settings

Out of the box implementation of the Construct without any override will set the following defaults:

AWS Fargate Service

• Sets up an AWS Fargate service

  • Uses the existing service if provided

  • Creates a new service if none provided.

    • Service will run in isolated subnets if available, then private subnets if available and finally public subnets

  • Adds environment variables to the container with the ARN and Name of the DynamoDB table

  • Add permissions to the container IAM role allowing it to publish to the DynamoDB table

Amazon DynamoDB Table

• Sets up an Amazon DynamoDB table

  • Uses an existing table if one is provided, otherwise creates a new one

• Adds an Interface Endpoint to the VPC for DynamoDB (the service by default runs in Isolated or Private subnets)

Architecture

---

© Copyright 2022 Amazon.com, Inc. or its affiliates. All Rights Reserved.