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Version: 1.x

Dog Fetcher example

This is a simple Rust Wasm example that fetches a URL to a random dog picture and returns the response. Its purpose is to show how you can use wasi:http/outgoing-handler in a component.

Prerequisites​

  • cargo 1.75
  • wash 0.27.0
  • wasmtime >=25.0.0 (if running with wasmtime)

Building​

bash
wash build

Running with wasmtime​

You must have wasmtime >=25.0.0 for this to work. Make sure to follow the build step above first.

bash
wasmtime serve -Scommon ./build/dog_fetcher_s.wasm

Running with wasmCloud​

Ensuring you've built your component with wash build, you can launch wasmCloud and deploy the full hello world application with the following commands. Once the application reports as Deployed in the application list, you can use curl to send a request to the running HTTP server.

shell
wash up -d
wash app deploy ./wadm.yaml
wash app get
curl http://127.0.0.1:8000

Adding Capabilities​

To learn how to extend this example with additional capabilities, see the Adding Capabilities section of the wasmCloud documentation.