<!-- Do not manually edit this file. Use the `changelogger` tool. -->
September 20th, 2022
====================
**Breaking Changes:**
- ⚠ (client, [smithy-rs#1603](https://github.com/awslabs/smithy-rs/issues/1603), [aws-sdk-rust#586](https://github.com/awslabs/aws-sdk-rust/issues/586)) `aws_smithy_types::RetryConfig` no longer implements `Default`, and its `new` function has been replaced with `standard`.
- ⚠ (client, [smithy-rs#1603](https://github.com/awslabs/smithy-rs/issues/1603), [aws-sdk-rust#586](https://github.com/awslabs/aws-sdk-rust/issues/586)) Client creation now panics if retries or timeouts are enabled without an async sleep implementation.
If you're using the Tokio runtime and have the `rt-tokio` feature enabled (which is enabled by default),
then you shouldn't notice this change at all.
Otherwise, if using something other than Tokio as the async runtime, the `AsyncSleep` trait must be implemented,
and that implementation given to the config builder via the `sleep_impl` method. Alternatively, retry can be
explicitly turned off by setting `max_attempts` to 1, which will result in successful client creation without an
async sleep implementation.
- ⚠ (client, [smithy-rs#1603](https://github.com/awslabs/smithy-rs/issues/1603), [aws-sdk-rust#586](https://github.com/awslabs/aws-sdk-rust/issues/586)) The `default_async_sleep` method on the `Client` builder has been removed. The default async sleep is
wired up by default if none is provided.
- ⚠ (client, [smithy-rs#976](https://github.com/awslabs/smithy-rs/issues/976), [smithy-rs#1710](https://github.com/awslabs/smithy-rs/issues/1710)) Removed the need to generate operation output and retry aliases in codegen.
- ⚠ (client, [smithy-rs#1715](https://github.com/awslabs/smithy-rs/issues/1715), [smithy-rs#1717](https://github.com/awslabs/smithy-rs/issues/1717)) `ClassifyResponse` was renamed to `ClassifyRetry` and is no longer implemented for the unit type.
- ⚠ (client, [smithy-rs#1715](https://github.com/awslabs/smithy-rs/issues/1715), [smithy-rs#1717](https://github.com/awslabs/smithy-rs/issues/1717)) The `with_retry_policy` and `retry_policy` functions on `aws_smithy_http::operation::Operation` have been
renamed to `with_retry_classifier` and `retry_classifier` respectively. Public member `retry_policy` on
`aws_smithy_http::operation::Parts` has been renamed to `retry_classifier`.
**New this release:**
- 🎉 (client, [smithy-rs#1647](https://github.com/awslabs/smithy-rs/issues/1647), [smithy-rs#1112](https://github.com/awslabs/smithy-rs/issues/1112)) Implemented customizable operations per [RFC-0017](https://awslabs.github.io/smithy-rs/design/rfcs/rfc0017_customizable_client_operations.html).
Before this change, modifying operations before sending them required using lower-level APIs:
```rust
let input = SomeOperationInput::builder().some_value(5).build()?;
let operation = {
let op = input.make_operation(&service_config).await?;
let (request, response) = op.into_request_response();
let request = request.augment(|req, _props| {
req.headers_mut().insert(
HeaderName::from_static("x-some-header"),
HeaderValue::from_static("some-value")
);
Result::<_, Infallible>::Ok(req)
})?;
Operation::from_parts(request, response)
};
let response = smithy_client.call(operation).await?;
```
Now, users may easily modify operations before sending with the `customize` method:
```rust
let response = client.some_operation()
.some_value(5)
.customize()
.await?
.mutate_request(|mut req| {
req.headers_mut().insert(
HeaderName::from_static("x-some-header"),
HeaderValue::from_static("some-value")
);
})
.send()
.await?;
```
- (client, [smithy-rs#1735](https://github.com/awslabs/smithy-rs/issues/1735), @vojtechkral) Lower log level of two info-level log messages.
- (all, [smithy-rs#1710](https://github.com/awslabs/smithy-rs/issues/1710)) Added `writable` property to `RustType` and `RuntimeType` that returns them in `Writable` form
- (all, [smithy-rs#1680](https://github.com/awslabs/smithy-rs/issues/1680), @ogudavid) Smithy IDL v2 mixins are now supported
- 🐛 (client, [smithy-rs#1715](https://github.com/awslabs/smithy-rs/issues/1715), [smithy-rs#1717](https://github.com/awslabs/smithy-rs/issues/1717)) Generated clients now retry transient errors without replacing the retry policy.
- 🐛 (all, [smithy-rs#1725](https://github.com/awslabs/smithy-rs/issues/1725), @sugmanue) Correctly determine nullability of members in IDLv2 models
message="The `SdkError::ResponseError`, typically caused by a connection terminating before the full response is received, is now treated as a transient failure and retried."
references=["aws-sdk-rust#303","smithy-rs#1717"]
meta={"breaking"=false,"tada"=false,"bug"=true}
author="jdisanti"
[[aws-sdk-rust]]
message="`ClassifyResponse` was renamed to `ClassifyRetry` and is no longer implemented for the unit type."
references=["smithy-rs#1715","smithy-rs#1717"]
meta={"breaking"=true,"tada"=false,"bug"=false}
author="jdisanti"
[[aws-sdk-rust]]
message="""
The `with_retry_policy` and `retry_policy` functions on `aws_smithy_http::operation::Operation` have been
renamed to `with_retry_classifier` and `retry_classifier` respectively. Public member `retry_policy` on
`aws_smithy_http::operation::Parts` has been renamed to `retry_classifier`.
"""
references=["smithy-rs#1715","smithy-rs#1717"]
meta={"breaking"=true,"tada"=false,"bug"=false}
author="jdisanti"
[[smithy-rs]]
message="Correctly determine nullability of members in IDLv2 models"
"message":"Service configs are now generated with new accessors for:\n- `Config::retry_config()` - Returns a reference to the inner retry configuration.\n- `Config::timeout_config()` - Returns a reference to the inner timeout configuration.\n- `Config::sleep_impl()` - Returns a clone of the inner async sleep implementation.\n\nPreviously, these were only accessible through `SdkConfig`.\n",
"message":"Lossy converters into integer types for `aws_smithy_types::Number` have been\nremoved. Lossy converters into floating point types for\n`aws_smithy_types::Number` have been suffixed with `_lossy`. If you were\ndirectly using the integer lossy converters, we recommend you use the safe\nconverters.\n_Before:_\n```rust\nfn f1(n: aws_smithy_types::Number) {\n let foo: f32 = n.to_f32(); // Lossy conversion!\n let bar: u32 = n.to_u32(); // Lossy conversion!\n}\n```\n_After:_\n```rust\nfn f1(n: aws_smithy_types::Number) {\n use std::convert::TryInto; // Unnecessary import if you're using Rust 2021 edition.\n let foo: f32 = n.try_into().expect(\"lossy conversion detected\"); // Or handle the error instead of panicking.\n // You can still do lossy conversions, but only into floating point types.\n let foo: f32 = n.to_f32_lossy();\n // To lossily convert into integer types, use an `as` cast directly.\n let bar: u32 = n as u32; // Lossy conversion!\n}\n```\n",
"message":"Direct configuration of `aws_config::SdkConfig` now defaults to retries being disabled.\nIf you're using `aws_config::load_from_env()` or `aws_config::from_env()` to configure\nthe SDK, then you are NOT affected by this change. If you use `SdkConfig::builder()` to\nconfigure the SDK, then you ARE affected by this change and should set the retry config\non that builder.\n",
"message":"Client creation now panics if retries or timeouts are enabled without an async sleep\nimplementation set on the SDK config.\nIf you're using the Tokio runtime and have the `rt-tokio` feature enabled (which is enabled by default),\nthen you shouldn't notice this change at all.\nOtherwise, if using something other than Tokio as the async runtime, the `AsyncSleep` trait must be implemented,\nand that implementation given to the config builder via the `sleep_impl` method. Alternatively, retry can be\nexplicitly turned off by setting the retry config to `RetryConfig::disabled()`, which will result in successful\nclient creation without an async sleep implementation.\n",
"message":"The `SdkError::ResponseError`, typically caused by a connection terminating before the full response is received, is now treated as a transient failure and retried.",
"message":"The `with_retry_policy` and `retry_policy` functions on `aws_smithy_http::operation::Operation` have been\nrenamed to `with_retry_classifier` and `retry_classifier` respectively. Public member `retry_policy` on\n`aws_smithy_http::operation::Parts` has been renamed to `retry_classifier`.\n",
