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Project Blackbird
=================
Make Fermyon Spin WebAssembly Modules run on NGINX Unit.
The repository will contain some exploratory tools.
Quickstart
==========
Clone the spin repository
$ git clone https://github.com/fermyon/spin.git
Build the wasm module.
$ cd spin/examples/wasi-http-rust
$ cargo build --target wasm32-wasi
Grab the Wasmtime C API
$ wget -O- https://github.com/bytecodealliance/wasmtime/releases/download/v13.0.0/wasmtime-v13.0.0-x86_64-linux-c-api.tar.xz | tar -xvf -
Clone this repository
$ git clone git://git.digital-domain.net/project_blackbird.git
Build it
$ cd project_blackbird
$ make WASMTIME_C_API=/path/to/wasmtime-c-api WASM_MODULE=/path/to/spin/examples/wasi-http-rust/target/wasm32-wasi/debug/wasi_http_rust.wasm
Run it
$ ./wasmtime-wasi-http
Initializing...
Loading binary...
Compiling module...
Setting function imports...
[poll2::poll-oneoff]
[streams2::read]
[streams2::blocking-read]
[streams2::subscribe-to-input-stream]
[streams2::write]
[streams2::blocking-write]
[streams2::subscribe-to-output-stream]
[default-outgoing-HTTP2::handle]
[types2::new-fields]
[types2::fields-entries]
[types2::finish-incoming-stream]
[types2::finish-outgoing-stream]
[types2::incoming-request-method]
[types2::incoming-request-path-with-query]
[types2::incoming-request-headers]
[types2::incoming-request-consume]
[types2::new-outgoing-request]
[types2::outgoing-request-write]
[types2::set-response-outparam]
[types2::incoming-response-status]
[types2::incoming-response-headers]
[types2::incoming-response-consume]
[types2::new-outgoing-response]
[types2::outgoing-response-write]
[types2::future-incoming-response-get]
[types2::listen-to-future-incoming-response]
Initialising WASI...
Instantiating module...
Getting function exports...
[HTTP#handle]
[cabi_realloc]
Shutting down...
Done.
Component Model
===============
You can play with the component model under rust/hello_world
This requires some new tools
- https://github.com/bytecodealliance/wit-bindgen
- https://github.com/bytecodealliance/wasm-tools
You can use the pre-built packages, once downloaded and untar'd, edit
rust/hello_world/component/Makefile
and adjust the paths for the above tools.
To build the component with make you may need to specify where the WASI
sysroot is
$ make WASI_SYSROOT=/path/to/wasi-sysroot
You can then build the Rust runtime under rust/hello_world with
$ cargo build
after a while (sheesh) it should finish... then you can run it with
$ target/debug/hello_world
it won't actually print anything, but also shouldn't give an error.
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