chore(clients): override endpoint in runtimeConfig

[trivikr]

Issue

Internal JS-4281

Description

Overrides endpoint in runtimeConfig to populate endpoint from environment variables or shared configuration

Testing

Test code:

import { ClientName } from "../aws-sdk-js-v3/clients/client-clientName/dist-cjs/index.js";

const urlToString = ({ hostname, protocol }) =>
  new URL(`${protocol}//${hostname}`).toString();

const client = new ClientName();
const endpoint = await client.config.endpoint();
console.log(urlToString(endpoint));

Configuration:

[profile config]
endpoint_url = http://config.custom.endpoint

[profile config-services]
services = config
endpoint_url = http://service.config.custom.endpoint
dynamodb =
    endpoint_url = http://invalid.dynamodb.config.custom.endpoint
elastic_beanstalk =
    endpoint_url = http://invalid.elastic_beanstalk.config.custom.endpoint

[services config]
endpoint_url = http://invalid.config.custom.endpoint
dynamodb =
    endpoint_url = http://dynamodb.config.custom.endpoint
elastic_beanstalk =
    endpoint_url = http://elastic_beanstalk.config.custom.endpoint

DynamoDB

The highest preference if one provided during client creation

Client configuration

Code:

const client = new DynamoDB({ endpoint: "http://custom.endpoint" });

Output:

http://custom.endpoint

Elastic Beanstalk

---

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

[trivikr]

Implemented in @smithy/middleware-endpoint in smithy-lang/smithy-typescript#1014

[github-actions]

This thread has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs and link to relevant comments in this thread.