v0.20 (August 10th, 2021)

[rcoh]

v0.20 (August 10th, 2021)

This week primarily contains bug fixes and internal changes to the request pipeline. Although many of these changes are breaking, we don't anticipate that many customers will be impacted.

Breaking changes

• (Refactor middleware to use new operation::Response instead of http::Response<SdkBody> #635) The config(), config_mut(), request(), and request_mut() methods on operation::Request have been renamed to properties(), properties_mut(), http(), and http_mut() respectively.

• (Refactor middleware to use new operation::Response instead of http::Response<SdkBody> #635) The Response type on Tower middleware has been changed from http::Response<SdkBody> to operation::Response. The HTTP response is still available from the operation::Response using its http() and http_mut() methods.

• (Refactor middleware to use new operation::Response instead of http::Response<SdkBody> #635) The ParseHttpResponse trait's parse_unloaded() method now takes an operation::Response rather than an http::Response<SdkBody>.

• (Remove generic body from ParseHttpResponse #626) ParseHttpResponse no longer has a generic argument for the body type, but instead, always uses SdkBody. This may cause compilation failures for you if you are using Smithy generated types to parse JSON or XML without using a client to request data from a service. The fix should be as simple as removing <SdkBody> in the example below:

  Before:

  let output = <Query as ParseHttpResponse<SdkBody>>::parse_loaded(&parser, &response).unwrap();

  After:

  let output = <Query as ParseHttpResponse>::parse_loaded(&parser, &response).unwrap();

New This Week

• Add AssumeRoleProvider parser implementation. (assume role chain parse tree #632)
• The closure passed to async_provide_credentials_fn can now borrow values (Allow the closure passed to async_provide_credentials_fn to borrow #637)
• Add Sender/Receiver implementations for Event Stream (Implement Event Stream Sender/Receiver for use in generated types #639)
• Bring in the latest AWS models (Update AWS SDK models #630)

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This discussion was created from the release v0.20 (August 10th, 2021).