Interface definitions for the Compute@Edge platform in witx.

Related tags

Utilities compute-at-edge-abi
Overview

🔗 compute-at-edge-abi

This repository contains witx definitions for the Compute@Edge platform ABI.

About witx

The witx file format is an experimental format which is based on the module linking text format (wit), (which is in turn based on the wat format, which is based on S-expressions). It adds some features using the same syntax as interface types, some features with syntax similar to gc types, as well as a few special features of its own.

witx is actively evolving. Expect backwards-incompatible changes, particularly in the areas where witx differs from wit.

The initial goal for witx is just to have a language suitable for expressing WASI APIs in, to serve as the vocabulary for proposing changes to existing APIs and proposing new APIs. Initially, while it uses some of the syntax and concepts from interface types, it doesn't currently imply the full interface types specification, or the use of the interface types custom sections.

We expect that eventually we will transition to using the full interface types specification, with witx having minimal additional features. Until then, the goals here are to remain aligned with interface types and other relevant WebAssembly standards and proposals wherever practical, and to be an input into the design process of interface types.

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Comments
  • Add auto_decompress_response_set host call

    Add auto_decompress_response_set host call

    With the newest 0.8.1 SDK release we need to move the host call to the public repo so that we can update Viceroy and fix https://github.com/fastly/Viceroy/issues/110. We just need to stub out the hostcall there, but it depends on this repo to have the latest definitions. This commit promotes the hostcall from an internal one to an external.

    opened by mgattozzi 1
  • Add close definitions for Response/Request handles

    Add close definitions for Response/Request handles

    This commit takes the changes from the internal repo and exposes them ahead of our new SDK release so that we can also update viceroy before then to be able to also handle the fact that handles have a new drop implementation for the Rust SDK that will automatically close themselves out when they go out of scope. If people use Viceroy with the new SDK version, then their programs will constantly crash and we can't have that happen.

    opened by mgattozzi 0
  • 👻 add empty workspace members array

    👻 add empty workspace members array

    This odd little commit is a workaround for a Cargo workspaces bug, described in rust-lang/cargo#6745; this workaround is described in a comment there1.

    When using this repository as a submodule, it becomes impossible to validate the definitions with the command below, if it contains a Cargo workspace:

    cargo run --manifest-path=validate-witx/Cargo.toml ./compute-at-edge.witx

    Moreover, we cannot always add the repo to the exclude array, for reasons explained in the attached Cargo issue.

    So, we'll introduce this empty workspace array, to avoid that issue for now.

    opened by cratelyn 0
Owner
Fastly
Fastly
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