Envoy proxy as an API gateway. Built with Bazel. Deployed into Kubernetes.

Blog post with detailed explanation.

Links

• Envoy proxy
• Bazel
• Bazelisk
• Kubernetes
• Tilt
• Minikube

Usage

1. Install and start minikube.
2. Install Bazelisk.
3. Run Tilt.

% bazel run //tools:tilt-up

% grpcurl -plaintext \
  -d '{"name": "Bazel"}' \
  127.0.0.1:55000 svc.ServiceOne.Hello

{
  "body": "Hello, Bazel"
}

% curl -i \
  -H 'token: abc' \
  http://localhost:8080/v1/hello\?name\=Bazel


HTTP/1.1 200 OK
content-type: application/json
x-envoy-upstream-service-time: 2
grpc-status: 0
grpc-message:
content-length: 28
date: Tue, 21 Sep 2021 23:33:27 GMT
server: envoy

{
 "body": "Hello, Bazel"
}

% bazel run //tools:tilt-down

NOTE: Until service-one become available, Envoy will return HTTP 503: upstream connect error or no healthy upstream