Passing Credentials from Variables to AWS SDK Version 2

This inquiry echoes a previous question regarding using AWS SDK with credentials from variables. However, in this case, SDK version 2 is utilized, which eliminates the Session feature.

To establish a new client with credentials obtained from variables for accessing the IAM service, consider the following function:

func getIAMClient(ctx context.Context) (*iam.Client, error) {
    cfg, err := config.LoadDefaultConfig(ctx, config.WithRegion("no-region"))
    if err != nil {
        return nil, errors.Wrap(err)
    }

    cfg.HTTPClient, err = getHTTPClient(ctx)
    if err != nil {
        return nil, err
    }

    return iam.NewFromConfig(cfg), nil
}

Since multiple users may employ the application simultaneously, utilizing ENV files is impractical. However, documentation explaining how to pass these credentials to a client may not be readily available.

Solution: Static Credentials Provider

To resolve this issue, the StaticCredentialsProvider can be utilized, as outlined in the "Static Credentials" section of the AWS SDK for Go V2 documentation:

cfg, err := config.LoadDefaultConfig(ctx, config.WithCredentialsProvider(credentials.NewStaticCredentialsProvider("AKID", "SECRET_KEY", "TOKEN")))

By incorporating this modification, credentials may be passed from variables to the SDK, enabling the retrieval and use of IAM services.