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Improve invalid HTTP status code responses failure mode handling #2522

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david-perez
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If the model only uses the @http trait to define the response code, Smithy already checks that this is a valid status code, so the conversion cannot fail, and we can avoid rejecting with ResponseRejection::InvalidHttpStatusCode.

This commit also removes this variant from RPC protocols, where HTTP binding traits are not allowed, and so this failure mode can never happen.


By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

@david-perez david-perez added the server Rust server SDK label Mar 31, 2023
@david-perez david-perez requested a review from a team as a code owner March 31, 2023 11:23
@david-perez david-perez requested review from jdisanti and crisidev and removed request for a team March 31, 2023 11:23
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A new generated diff is ready to view.

  • No codegen difference in the AWS SDK
  • No codegen difference in the Client Test
  • No codegen difference in the Server Test
  • No codegen difference in the Server Test Python

A new doc preview is ready to view.

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A new generated diff is ready to view.

  • No codegen difference in the AWS SDK
  • No codegen difference in the Client Test
  • No codegen difference in the Server Test
  • No codegen difference in the Server Test Python

A new doc preview is ready to view.

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A new generated diff is ready to view.

  • No codegen difference in the AWS SDK
  • No codegen difference in the Client Test
  • No codegen difference in the Server Test
  • No codegen difference in the Server Test Python

A new doc preview is ready to view.

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After CI is fixed, this LGTM

@david-perez david-perez force-pushed the davidpz/split-runtimeerror-and-requestrejection-into-protocol-specific-structs branch from c271761 to fad1764 Compare April 3, 2023 12:39
Base automatically changed from davidpz/split-runtimeerror-and-requestrejection-into-protocol-specific-structs to main April 3, 2023 13:31
@david-perez david-perez force-pushed the davidpz/improve-invalid-http-status-code-responses-failure-mode-handling branch from 13175d8 to 2d321bf Compare April 3, 2023 14:02
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I've rebased into a single commit to avoid GitHub's merge queue using an ugly squashed commit message.

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A new generated diff is ready to view.

  • No codegen difference in the AWS SDK
  • No codegen difference in the Client Test
  • No codegen difference in the Server Test
  • No codegen difference in the Server Test Python

A new doc preview is ready to view.

If the model only uses the `@http` trait to define the response code,
Smithy already checks that this is a valid status code, so the
conversion cannot fail, and we can avoid rejecting with
`ResponseRejection::InvalidHttpStatusCode`.

This commit also removes this variant from RPC protocols, where HTTP
binding traits are not allowed, and so this failure mode can never
happen.
@david-perez david-perez force-pushed the davidpz/improve-invalid-http-status-code-responses-failure-mode-handling branch from 2d321bf to d91de83 Compare April 3, 2023 14:23
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github-actions bot commented Apr 3, 2023

A new generated diff is ready to view.

  • No codegen difference in the AWS SDK
  • No codegen difference in the Client Test
  • No codegen difference in the Server Test
  • No codegen difference in the Server Test Python

A new doc preview is ready to view.

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github-actions bot commented Apr 4, 2023

A new generated diff is ready to view.

  • No codegen difference in the AWS SDK
  • No codegen difference in the Client Test
  • Server Test (ignoring whitespace)
  • No codegen difference in the Server Test Python

A new doc preview is ready to view.

@david-perez david-perez added this pull request to the merge queue Apr 4, 2023
Merged via the queue into main with commit f2abe7c Apr 4, 2023
@david-perez david-perez deleted the davidpz/improve-invalid-http-status-code-responses-failure-mode-handling branch April 4, 2023 08:24
@david-perez david-perez mentioned this pull request Apr 4, 2023
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unexge pushed a commit that referenced this pull request Apr 24, 2023
If the model only uses the `@http` trait to define the response code,
Smithy already checks that this is a valid status code, so the
conversion cannot fail, and we can avoid rejecting with
`ResponseRejection::InvalidHttpStatusCode`.

This commit also removes this variant from RPC protocols, where HTTP
binding traits are not allowed, and so this failure mode can never
happen.
rcoh pushed a commit that referenced this pull request Apr 24, 2023
If the model only uses the `@http` trait to define the response code,
Smithy already checks that this is a valid status code, so the
conversion cannot fail, and we can avoid rejecting with
`ResponseRejection::InvalidHttpStatusCode`.

This commit also removes this variant from RPC protocols, where HTTP
binding traits are not allowed, and so this failure mode can never
happen.
github-merge-queue bot pushed a commit that referenced this pull request Jul 17, 2024
RPC v2 CBOR is a new protocol that ~is being added~ has [recently been
added](https://smithy.io/2.0/additional-specs/protocols/smithy-rpc-v2.html)
to the Smithy
specification.

_(I'll add more details here as the patchset evolves)_

Credit goes to @jjant for initial implementation of the router, which I
built on top of from his
[`jjant/smithy-rpc-v2-exploration`](https://github.com/awslabs/smithy-rs/tree/jjant/smithy-rpc-v2-exploration)
branch.

Tracking issue: #3573.

## Caveats

`TODO`s are currently exhaustively sprinkled throughout the patch
documenting what remains to be done. Most of these need to be addressed
before this can be merged in; some can be punted on to not make this PR
bigger.

However, I'd like to call out the major caveats and blockers here. I'll
keep updating this list as the patchset evolves.

- [x] RPC v2 has still not been added to the Smithy specification. It is
currently being worked on over in the
[`smithy-rpc-v2`](https://github.com/awslabs/smithy/tree/smithy-rpc-v2)
branch. The following are prerrequisites for this PR to be merged;
**until they are done CI on this PR will fail**:
    - [x] Smithy merges in RPC v2 support.
    - [x] Smithy releases a new version incorporating RPC v2 support.
- Released in [Smithy
v1.47](https://github.com/smithy-lang/smithy/releases/tag/1.47.0)
    - [x] smithy-rs updates to the new version.
        - Updated in #3552
- [x] ~Protocol tests for the protocol do not currently exist in Smithy.
Until those get written~, this PR resorts to Rust unit tests and
integration tests that use `serde` to round-trip messages and compare
`serde`'s encoders and decoders with ours for correctness.
- Protocol tests are under the
[`smithy-protocol-tests`](https://github.com/smithy-lang/smithy/tree/main/smithy-protocol-tests/model/rpcv2Cbor)
directory in Smithy.
- We're keeping the `serde_cbor` round-trip tests for defense in depth.
- [ ] #3709 - Currently
only server-side support has been implemented, because that's what I'm
most familiar. However, we're almost all the way there to add
client-side support.
- ~[ ] [Smithy `document`
shapes](https://smithy.io/2.0/spec/simple-types.html#document) are not
supported. RPC v2's specification currently doesn't indicate how to
implement them.~
- [The
spec](https://smithy.io/2.0/additional-specs/protocols/smithy-rpc-v2.html#shape-serialization)
ended up leaving them as unsupported: "Document types are not currently
supported in this protocol."

## Prerequisite PRs

This section lists prerequisite PRs and issues that would make the diff
for this one lighter or easier to understand. It's preferable that these
PRs be merged prior to this one; some are hard prerequisites. They
mostly relate to parts of the codebase I've had to touch or ~pilfer~
inspect in this PR where I've made necessary changes, refactors and
"drive-by improvements" that are mostly unrelated, although some
directly unlock things I've needed in this patchset. It makes sense to
pull them out to ease reviewability and make this patch more
semantically self-contained.

- #2516
- #2517
- #2522
- #2524
- #2528
- #2536
- #2537
- #2531
- #2538
- #2539
- #2542
- #3684
- #3678
- #3690
- #3713
- #3726
- #3752

## Testing
<!--- Please describe in detail how you tested your changes -->
<!--- Include details of your testing environment, and the tests you ran
to -->
<!--- see how your change affects other areas of the code, etc. -->

~RPC v2 has still not been added to the Smithy specification. It is
currently being worked on over in the
[`smithy-rpc-v2`](https://github.com/awslabs/smithy/tree/smithy-rpc-v2)
branch.~

This can only be tested _locally_ following these steps:

~1. Clone [the Smithy
repository](https://github.com/smithy-lang/smithy/tree/smithy-rpc-v2)
and checkout the `smithy-rpc-v2` branch.
2. Inside your local checkout of smithy-rs pointing to this PR's branch,
make sure you've added `mavenLocal()` as a repository in the
`build.gradle.kts` files.
[Example](8df82fd).
4. Inside your local checkout of Smithy's `smithy-rpc-v2` branch:
1. Set `VERSION` to the current Smithy version used in smithy-rs (1.28.1
as of writing, but [check
here](https://github.com/awslabs/smithy-rs/blob/main/gradle.properties#L21)).
    2. Run `./gradlew clean build pTML`.~
~6.~ 1. In your local checkout of the smithy-rs's `smithy-rpc-v2`
branch, run `./gradlew codegen-server-test:build -P
modules='rpcv2Cbor'`.

~You can troubleshoot whether you have Smithy correctly set up locally
by inspecting
`~/.m2/repository/software/amazon/smithy/smithy-protocols-traits`.~

## Checklist
<!--- If a checkbox below is not applicable, then please DELETE it
rather than leaving it unchecked -->
- [ ] I have updated `CHANGELOG.next.toml` if I made changes to the
smithy-rs codegen or runtime crates

----

_By submitting this pull request, I confirm that you can use, modify,
copy, and redistribute this contribution, under the terms of your
choice._
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