aws-cdk-dynamodb-seeder

aws-cdk-dynamodb-seeder

A simple CDK JSON seeder for DynamoDB

Why this package

Glad you asked!

Using AWS CDK for automating infratructure deployments is an amazing way of integrating the development and operations into one process and one codebase.

However, building dev or test environments that come pre-populated with data can be tricky, especially when using Amazon DynamoDB.

How do I use it

Install using your favourite package manager:

yarn add aws-cdk-dynamodb-seeder

Example usage

import { Seeder } from 'aws-cdk-dynamodb-seeder';
...
const myTable = new Table(stack, "MyTable", {
    tableName: "MyTable",
    partitionKey: { name: "Id", type: AttributeType.STRING },
});
...
new Seeder(stack, "MySeeder", {
    table: myTable,
    tableName: "MyTable",
    setup: require("./items-to-put.json"),
    teardown: require("./keys-to-delete.json"),
    refreshOnUpdate: true  // runs setup and teardown on every update, default false
});

Importing seed data

Data passed into setup ("Items" to put) or teardown ("Keys" to delete) should be an array of JavaScript objects (that are, in turn, representations of string to AttributeValue maps).

• setup elements should use the format of params.Item from AWS.DynamoDB.DocumentClient.put()
• teardown elements should use the format of params.Key from AWS.DynamoDB.DocumentClient.delete()