/rust-wasm-example

Primary LanguageRust

build wasm

cargo build --target wasm32-wasi --release

Using Envoy

docker compose up

push to oci

docker build -t ${YOUR_DOCKER_REGISTRY_IMAGE}:v1 . docker push ghcr.io/OWNER/hello_rust:v1

apply k8s

kubectl apply -f k8s/

Verify

SLEEP_POD=$(kubectl get pod -l app=sleep -o jsonpath={.items..metadata.name})

kubectl exec ${SLEEP_POD} -c sleep -- sh -c 'for i in $(seq 1 3); do curl --head -s httpbin:8000/headers; sleep 0.25; done'

Expected Envoy logs (new line generated every 5s):

[...] wasm log: Hello, World!
[...] wasm log: It's 2022-11-22 03:39:17.849616 UTC, your lucky number is 41.
[...] wasm log: It's 2022-11-22 03:39:22.846531 UTC, your lucky number is 28.
[...] wasm log: It's 2022-11-22 03:39:27.847489 UTC, your lucky number is 102.
[...] wasm log: It's 2022-11-22 03:39:32.848443 UTC, your lucky number is 250.