I wrote about Navigating Koyeb’s Golang SDK. That client is generated using the OpenAPI Generator project using Koyeb’s Swagger (now OpenAPI) REST API spec.

This post shows how to generate a Rust SDK using the Generator and provides a very basic example of using the SDK.

The Generator will create a Rust library project:

VERS="v7.2.0"

PACKAGE_NAME="koyeb-api-client-rs"
PACKAGE_VERS="1.0.0"

podman run \
--interactive --tty --rm \
--volume=${PWD}:/local \
docker.io/openapitools/openapi-generator-cli:${VERS} \
generate \
-g=rust \
-i=https://developer.koyeb.com/public.swagger.json \
-o=/local/${PACKAGE_NAME} \
--additional-properties=\
packageName=${PACKAGE_NAME},\
packageVersion=${PACKAGE_VERS}

This will create the project in ${PWD}/${PACKAGE_NAME} including the documentation at:

See:

• Multiplexing gRPC and HTTP endpoints with Cloud Run
• gRPC, Cloud Run & Endpoints
• ESPv2: Configure Cloud Endpoints to proxy traffic to a Cloud Run multiplexed (gRPC|HTTP) service

Challenges:

• Cloud Run permits single port
• Cloud Run services publishing e.g. gRPC and Prometheus, must multiplex transports
• Cloud Run services publishing multiplexed transports are challenging to expose using Cloud Endpoints

Hypothesis #1: Multiplexed transports work with Cloud Run

See: Multiplexing gRPC and HTTP endpoints with Cloud Run