DynamoDB Adapter for Lucia

Database Adapter for DynamoDB.

The adapter uses aws-sdk v3.

Installation

N.B. this package is not yet published on npm

pnpm install lucia-adapter-dynamodb

OR

yarn add lucia-adapter-dynamodb

OR

npm install lucia-adapter-dynamodb

Usage

It requires two parameters:

• a document client (used to configure the connection to dynamodb, set credentials/region etc.)
• a table name

For the document client, be sure to pass a reference to a DynamoDBDocument from @aws-sdk/lib-dynamodb, NOT a DynamoDBClient from @aws-sdk/client-dynamodb (DynamoDBDocument is an abstraction which handles automatic marshalling/unmarshalling of data in to JSON format).

import { adapter } from "lucia-adapter-dynamodb";
import { DynamoDBClient } from "@aws-sdk/client-dynamodb";
import { DynamoDBDocument } from "@aws-sdk/lib-dynamodb";

const client = new DynamoDBClient({ region, credentials });
const documentClient = DynamoDBDocument.from(client);

export const auth = lucia({
  adapter: adapter({ documentClient, table: "MyAuthTable" }),
});

DynamoDB Table schema

This adapter requires a Table with:

• a composite primary key consisting of a pk and sk field
• a global secondary index with the name gsi1
• GSI primary key with the fields gsi1pk and gsi1sk

You can use the adapter with an existing table if this matches your schema. If not, it is recommended (for now) to use a new Table dedicated for Lucia auth.

N.B. In the future, I may add a configuration option to choose the pk/sk/gsi attribute names.

Example DynamoDB Table

Here is an example of a Table defined using SST:

const authTable = new Table(stack, "MyAuthTable", {
  fields: {
    pk: "string",
    sk: "string",
    gsi1pk: "string",
    gsi1sk: "string",
  },
  primaryIndex: { partitionKey: "pk", sortKey: "sk" },
  globalIndexes: {
    gsi1: { partitionKey: "gsi1pk", sortKey: "gsi1sk" },
  },
});