How to Use AWS SDK Version 2 with Dynamic Credentials in Go?

Accessing AWS with SDK Version 2 and Dynamic Credentials

Similar to a previous inquiry, this question seeks guidance on using AWS SDK version 2 with credentials stored in variables. Unlike its predecessor, SDK version 2 no longer employs the Session class.

Consider the following function used to instantiate a new client and connect to the IAM service:

<code class="go">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
}</code>

To accommodate multiple users utilizing the application simultaneously, the use of environment variables is impractical. This necessitates an alternative method of passing credentials to the client.

Solution: Utilizing StaticCredentialsProvider

The AWS SDK for Go V2 documentation elucidates the use of StaticCredentialsProvider to achieve this objective, as outlined in the "Static Credentials" section:

<code class="go">cfg, err := config.LoadDefaultConfig(ctx, config.WithCredentialsProvider(credentials.NewStaticCredentialsProvider("AKID", "SECRET_KEY", "TOKEN")))</code>

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