This code is provided purely as a code sample to demonstrate "how" to override the default credentials provided on DynamoDB Client instantiation in Java (AWS SDK v2). It is not intended to work "out of the box" - changes must be made to integrate it effectively with your individual use case.

This example demonstrates how to override IAM credentials configuration at the request-level, using the AWS Java SDK V2. When initially creating the DynamoDbClient, you can add a field in the builder() for a credentialsProvider(...), which can be used as the default.

Then, you can re-use the same client to execute PutItem statements, using an AwsRequestOverrideConfiguration, to override the default credentials provided in the builder field credentialsProvider(...). This override can be performed for every request, using the same DynamoDbClient object.

The code snippet provided will compile, but it will fail to run as-is, because of three primary reasons:

1. The actual credentials provided are meant to be replaced by the user.
2. The PutItemRequest is not specifying a "valid schema" since it's targeting a non-existent (and unspecified) DynamoDB table.
3. The DynamoDbClient is using a DefaultCredentialsProvider, but the script doesn't live anywhere that can leverage that "default".

• The assumption was that this would live on a host, or in a Lambda with these default environment variables defined.

• Update the credentials.
• Change the names of the helper functions to suit your use case.

Be the first to make this better with a Pull Request.