somod-chat-service/build/serverless/functions/wsOnDisconnect.js

Serverless Chat Service from SOMOD

import { DynamoDBClient, DeleteItemCommand } from "@aws-sdk/client-dynamodb";
import { marshall } from "@aws-sdk/util-dynamodb";
const dynamodb = new DynamoDBClient();
const WebsocketOnDisconnect = async (event) => {
    const connectionId = event.requestContext.connectionId;
    await dynamodb.send(new DeleteItemCommand({
        TableName: process.env.CONNECTIONS_TABLE_NAME + "",
        Key: marshall({ id: connectionId })
    }));
    return { statusCode: 200, body: "Disconnected." };
};
export default WebsocketOnDisconnect;