gRPC Service with Envoy Proxy

This project demonstrates a gRPC service exposed via Envoy Proxy, which translates RESTful HTTP/JSON requests into gRPC calls.

Directory Structure

• item_service/: Contains the gRPC service implementation.
• client_service/: Contains the gRPC client implementation. You can also run below commands from (3)
• docker-compose.yml: Orchestrates the gRPC service, Envoy proxy, and client.

How to Run

1. Build the Docker images:

   make build

2. Run the gRPC service, Envoy proxy, and client:

   make run

3. Test the API:

   grpc request to the service[9090]:

   grpcurl -plaintext -proto item_service/item.proto -d '{"id": "123"}' localhost:9090 item.ItemService/GetItem

   grpc request to the proxy[8080]:

   grpcurl -plaintext -proto client_service/item.proto -d '{"id": "123"}' localhost:8080 item.ItemService/GetItem

   REST request to the proxy[8080]

   curl -v -X POST http://localhost:8080/v1/item/get \
     -H "Content-Type: application/json" \
     -d '{"id": "123"}'

4. Clean up:

   make clean