From a763db9d1f035f6995e3444c7239d9cc24304d0a Mon Sep 17 00:00:00 2001
From: Stephen J Day <stephen.day@docker.com>
Date: Tue, 21 Nov 2017 21:44:39 -0800
Subject: [PATCH] ttrpc: add required codec.go

Signed-off-by: Stephen J Day <stephen.day@docker.com>
---
 codec.go | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 codec.go

diff --git a/codec.go b/codec.go
new file mode 100644
index 0000000..7956a72
--- /dev/null
+++ b/codec.go
@@ -0,0 +1,26 @@
+package ttrpc
+
+import (
+	"github.com/gogo/protobuf/proto"
+	"github.com/pkg/errors"
+)
+
+type codec struct{}
+
+func (c codec) Marshal(msg interface{}) ([]byte, error) {
+	switch v := msg.(type) {
+	case proto.Message:
+		return proto.Marshal(v)
+	default:
+		return nil, errors.Errorf("ttrpc: cannot marshal unknown type: %T", msg)
+	}
+}
+
+func (c codec) Unmarshal(p []byte, msg interface{}) error {
+	switch v := msg.(type) {
+	case proto.Message:
+		return proto.Unmarshal(p, v)
+	default:
+		return errors.Errorf("ttrpc: cannot unmarshal into unknown type: %T", msg)
+	}
+}