Implement a reverse proxy using grpc-gateway

cmd/rove-reverse-proxy/main.go

@@ -0,0 +1,45 @@
+package main
+
+import (
+	"context"
+	"flag"
+	"fmt"
+	"net/http"
+	"os"
+
+	"github.com/golang/glog"
+	"github.com/grpc-ecosystem/grpc-gateway/runtime"
+	"google.golang.org/grpc"
+
+	"github.com/mdiluz/rove/pkg/rove"
+)
+
+var endpoint = os.Getenv("GRPC_ENDPOINT")
+var address = os.Getenv("HOST_ADDRESS")
+
+func run() error {
+	ctx := context.Background()
+	ctx, cancel := context.WithCancel(ctx)
+	defer cancel()
+
+	// Create a new mux and register it with the gRPC engpoint
+	fmt.Printf("Hosting reverse-proxy on %s for %s\n", address, endpoint)
+	mux := runtime.NewServeMux()
+	opts := []grpc.DialOption{grpc.WithInsecure()}
+	err := rove.RegisterRoveServerHandlerFromEndpoint(ctx, mux, endpoint, opts)
+	if err != nil {
+		return err
+	}
+
+	// Start the HTTP server and proxy calls to gRPC endpoint when needed
+	return http.ListenAndServe(address, mux)
+}
+
+func main() {
+	flag.Parse()
+	defer glog.Flush()
+
+	if err := run(); err != nil {
+		glog.Fatal(err)
+	}
+}

cmd/rove-server/internal/server.go

@@ -129,7 +129,7 @@ func (s *Server) Initialise(fillWorld bool) (err error) {
 		log.Fatalf("failed to listen: %v", err)
 	}
 	s.grpcServ = grpc.NewServer()
-	rove.RegisterRoverServerServer(s.grpcServ, s)
+	rove.RegisterRoveServerServer(s.grpcServ, s)
 
 	return nil
 }

cmd/rove/main.go

@@ -98,7 +98,7 @@ func InnerMain(command string) error {
 	if err != nil {
 		return err
 	}
-	var client = rove.NewRoverServerClient(clientConn)
+	var client = rove.NewRoveServerClient(clientConn)
 	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
 	defer cancel()