Moved files to liveshare dir

liveshare/rpc.go

@@ -0,0 +1,41 @@
+package liveshare
+
+import (
+	"context"
+	"fmt"
+	"io"
+
+	"github.com/opentracing/opentracing-go"
+	"github.com/sourcegraph/jsonrpc2"
+)
+
+type rpcClient struct {
+	*jsonrpc2.Conn
+	conn io.ReadWriteCloser
+}
+
+func newRPCClient(conn io.ReadWriteCloser) *rpcClient {
+	return &rpcClient{conn: conn}
+}
+
+func (r *rpcClient) connect(ctx context.Context) {
+	stream := jsonrpc2.NewBufferedStream(r.conn, jsonrpc2.VSCodeObjectCodec{})
+	r.Conn = jsonrpc2.NewConn(ctx, stream, nullHandler{})
+}
+
+func (r *rpcClient) do(ctx context.Context, method string, args, result interface{}) error {
+	span, ctx := opentracing.StartSpanFromContext(ctx, method)
+	defer span.Finish()
+
+	waiter, err := r.Conn.DispatchCall(ctx, method, args)
+	if err != nil {
+		return fmt.Errorf("error dispatching %q call: %w", method, err)
+	}
+
+	return waiter.Wait(ctx, result)
+}
+
+type nullHandler struct{}
+
+func (nullHandler) Handle(ctx context.Context, conn *jsonrpc2.Conn, req *jsonrpc2.Request) {
+}