proxy update to vpp 20.05

Signed-off-by: mhalaj1 <matus.halaj@pantheon.tech>
Change-Id: I1c7b11950756d0fe789eb7badc3e883c12826671

1 files changed, 72 insertions, 6 deletions

diff --git a/proxy/client.go b/proxy/client.go
index aea9a94..d1c5d73 100644
--- a/proxy/client.go
+++ b/proxy/client.go
@@ -1,4 +1,4 @@
-//  Copyright (c) 2019 Cisco and/or its affiliates.
+//  Copyright (c) 2021 Cisco and/or its affiliates.
 //
 //  Licensed under the Apache License, Version 2.0 (the "License");
 //  you may not use this file except in compliance with the License.
@@ -15,6 +15,7 @@
 package proxy
 
 import (
+	"context"
 	"fmt"
 	"net/rpc"
 	"reflect"
@@ -132,6 +133,67 @@ type BinapiClient struct {
 	timeout time.Duration
 }
 
+// RPCStream is a stream for forwarding requests to BinapiRPC's stream.
+type RPCStream struct {
+	rpc *rpc.Client
+	id  uint32
+}
+
+func (s *RPCStream) SendMsg(msg api.Message) error {
+	req := RPCStreamReqResp{
+		ID:  s.id,
+		Msg: msg,
+	}
+	resp := RPCStreamReqResp{}
+	err := s.rpc.Call("BinapiRPC.SendMessage", req, &resp)
+	if err != nil {
+		return fmt.Errorf("RPC SendMessage call failed: %v", err)
+	}
+	return nil
+}
+
+func (s *RPCStream) RecvMsg() (api.Message, error) {
+	req := RPCStreamReqResp{
+		ID: s.id,
+	}
+	resp := RPCStreamReqResp{}
+	err := s.rpc.Call("BinapiRPC.ReceiveMessage", req, &resp)
+	if err != nil {
+		return nil, fmt.Errorf("RPC ReceiveMessage call failed: %v", err)
+	}
+	return resp.Msg, nil
+}
+
+func (s *RPCStream) Close() error {
+	req := RPCStreamReqResp{
+		ID: s.id,
+	}
+	resp := RPCStreamReqResp{}
+	err := s.rpc.Call("BinapiRPC.CloseStream", req, &resp)
+	if err != nil {
+		return fmt.Errorf("RPC CloseStream call failed: %v", err)
+	}
+	return nil
+}
+
+func (b *BinapiClient) NewStream(_ context.Context, _ ...api.StreamOption) (api.Stream, error) {
+	stream := &RPCStream{
+		rpc: b.rpc,
+	}
+	req := RPCStreamReqResp{}
+	resp := RPCStreamReqResp{}
+	err := stream.rpc.Call("BinapiRPC.NewAPIStream", req, &resp)
+	if err != nil {
+		return nil, fmt.Errorf("RPC NewAPIStream call failed: %v", err)
+	}
+	stream.id = resp.ID
+	return stream, err
+}
+
+func (b *BinapiClient) Invoke(_ context.Context, request api.Message, reply api.Message) error {
+	return invokeInternal(b.rpc, request, reply, b.timeout)
+}
+
 func (b *BinapiClient) SendRequest(msg api.Message) api.RequestCtx {
 	req := &requestCtx{
 		rpc:     b.rpc,
@@ -149,20 +211,24 @@ type requestCtx struct {
 }
 
 func (r *requestCtx) ReceiveReply(msg api.Message) error {
+	return invokeInternal(r.rpc, r.req, msg, r.timeout)
+}
+
+func invokeInternal(rpc *rpc.Client, msgIn, msgOut api.Message, timeout time.Duration) error {
 	req := BinapiRequest{
-		Msg:      r.req,
-		ReplyMsg: msg,
-		Timeout:  r.timeout,
+		Msg:      msgIn,
+		ReplyMsg: msgOut,
+		Timeout:  timeout,
 	}
 	resp := BinapiResponse{}
 
-	err := r.rpc.Call("BinapiRPC.Invoke", req, &resp)
+	err := rpc.Call("BinapiRPC.Invoke", req, &resp)
 	if err != nil {
 		return fmt.Errorf("RPC call failed: %v", err)
 	}
 
 	// we set the value of msg to the value from response
-	reflect.ValueOf(msg).Elem().Set(reflect.ValueOf(resp.Msg).Elem())
+	reflect.ValueOf(msgOut).Elem().Set(reflect.ValueOf(resp.Msg).Elem())
 
 	return nil
 }