Fork this project to create your own Rust functions as a web service.
- The Rust function source code is in the
src/lib.rs
file. - Use the rustwasmc tool to compile the Rust function into a WebAssembly module in the
pkg
directory. - Optional: Use the
node node/app.js
command to test the function locally in Node.js. - Upload the
pkg/*.wasm
file to the Second State FaaS service, OR to a Node.js server, to turn it into a web service.
This is the Docker edition. Check out the Github Codespaces edition here.
Build the WebAssembly module.
$ docker pull wasmedge/appdev_x86_64
$ docker run -p 3000:3000 --rm -it -v $(pwd):/app wasmedge/appdev_x86_64
(docker) # cd /app
(docker) # rustwasmc build
If you want use this on an ARM64 machine, pull the
wasmedge/appdev_aarch64
Docker image.
From the first terminal window, start the Node.js application.
(docker) # node node/app.js
From a second terminal window, you can test the local server.
$ curl http://localhost:3000/?name=WasmEdge
hello WasmEdge
Upload the wasm file in the pkg folder to the FaaS. Double check the .wasm file name before you upload.
(docker) # curl --location --request POST 'https://rpc.ssvm.secondstate.io:8081/api/executables' \
--header 'Content-Type: application/octet-stream' \
--header 'SSVM-Description: say hello' \
--data-binary '@pkg/hello_lib_bg.wasm'
The FaaS returns
{"wasm_id":161,"wasm_sha256":"0xfb413547a8aba56d0349603a7989e269f3846245e51804932b3e02bc0be4b665","usage_key":"00000000-0000-0000-0000-000000000000","admin_key":"00xxxxxx-xxxx-xxxx-xxxx-4adc960fd2b8"}
Make a function call via the web.
(docker) # curl --location --request POST 'https://rpc.ssvm.secondstate.io:8081/api/run/161/say' \
--header 'Content-Type: text/plain' \
--data-raw 'Second State FaaS'
hello Second State FaaS
You can easily incorporate this web service into your HTML web pages. See how
Now, you can copy and paste code from this project.
-
src/lib.rs
--> Replace with code here -
Cargo.toml
--> Replace with code here -
node/app.js
--> Replace with code here -
FaaS deployment: https://github.com/second-state/wasm-learning/tree/master/faas
-
Node.js deployment: https://github.com/second-state/wasm-learning/tree/master/nodejs
- The WasmEdge Runtime is a high performance WebAssembly virtual machine designed for edge computing (including Edge Cloud) applications.
- The rustwasmc is a toolchain for compiling Rust programs into WebAssembly, and then make them accessible from JavaScripts via the WasmEdge Runtime.
- The Second State FaaS is an open source FaaS engine based on WebAssembly and Node.js.
Brought to you by the Open source dev team at Second State. Follow us on Twitter, Facebook, LinkedIn, YouTube, or Medium