4.0.0.0-preview.9

4.0.0.0-preview.9 (2025-03-04 14:29 UTC)

• DynamoDBv2 (4.0.0.0)
  • Implement DynamoDBDerivedTypeAttribute to enable polymorphism support for nested items on save and load data.
• S3 (4.0.0.0)
  • Manual sweep of S3 for protocol test compliance.
• Core 4.0.0.0
  • [Breaking Change] Rework how SDK logs can be outputted. The AWSSDK.Extensions.Logging.ILoggerAdaptor and AWSSDK.Extensions.Logging.Log4NetAdaptor adaptor packages were added to support outputting the SDK logs to Microsoft.Extensions.Logging or log4net.
  • Do not send null values, but do send empty strings and empty lists over the wire in headers for restxml and restjson protocols
  • Improved error message when searching for AWS credentials and no credentials were found.
  • The CredentialsRetriever pipeline handler has been removed and each signer now retrieves credentials from the Identity property directly instead.
  • The FallbackCredentialsFactory has been marked as deprecated, and the DefaultAWSCredentialsIdentityResolver class should be used instead. This new class follows the credential resolution order as the other AWS SDKs and will re-evaluate credentials when environment variables (such as AWS_PROFILE) change - which can happen in interactive PowerShell sessions.
  • The ImmutableCredentials property of the RequestContext has been removed - as it's only applicable to AWS credentials. A new property named Identity is available instead (it'll be used for anonymous and token credentials as well).
  • The AWS SDK for .NET has been updated to resolve credentials at request time, instead of resolving them when a client is instantiated (note: credentials are still cached between executions, the SDK won't attempt to retrieve them again - e.g. by calling AssumeRole - if they're valid from a previous call).
  • The signature for the signer classes (such as AWS4Signer) has been changed as they now implement a new interface.
  • All services packages updated to require new Core