AssumeRoleCredentialsProvider does not allow passing credentials

[moltar]

It looks like AssumeRoleCredentialsProvider assumes the credentials are coming from the environment, and there is no way to pass them explicitly.

The entry point is here, which decides whether to use credentials OR role.

aws4-axios/src/interceptor.ts

Lines 69 to 76 in 9066b38

	const credentialsProvider =
	options?.assumeRoleArn && !credentials
	? new AssumeRoleCredentialsProvider({
	roleArn: options.assumeRoleArn,
	region: options.region,
	expirationMarginSec: options.assumedRoleExpirationMarginSec,
	})
	: new SimpleCredentialsProvider(credentials);

But I think it is a valid use case to provide credentials, which will be used for STS.

Docs: https://docs.aws.amazon.com/AWSJavaScriptSDK/latest/AWS/STS.html#constructor-property

[michael-land]

Encounter the same issue when integrate multiple AWS profiles. @moltar did you found any workaround?

[michael-land]

@jamesmbourne any thoughts?

[scottanderson42]

You could write your own CredentialsProvider based on AssumeRoleCredentialsProvider.