move broker codec

broker/codec/codec.go

@@ -0,0 +1,10 @@
+package codec
+
+// Codec is used for encoding where the broker doesn't natively support
+// headers in the message type. In this case the entire message is
+// encoded as the payload
+type Codec interface {
+	Marshal(interface{}) ([]byte, error)
+	Unmarshal([]byte, interface{}) error
+	String() string
+}

broker/codec/json/json.go

@@ -3,7 +3,7 @@ package json
 import (
 	"encoding/json"
 
-	"github.com/micro/go-micro/broker"
+	"github.com/micro/go-micro/broker/codec"
 )
 
 type jsonCodec struct{}
@@ -20,6 +20,6 @@ func (j jsonCodec) String() string {
 	return "json"
 }
 
-func NewCodec() broker.Codec {
+func NewCodec() codec.Codec {
 	return jsonCodec{}
 }

broker/codec/noop/noop.go

@@ -4,6 +4,7 @@ import (
 	"errors"
 
 	"github.com/micro/go-micro/broker"
+	"github.com/micro/go-micro/broker/codec"
 )
 
 type noopCodec struct{}
@@ -29,6 +30,6 @@ func (n noopCodec) String() string {
 	return "noop"
 }
 
-func NewCodec() broker.Codec {
+func NewCodec() codec.Codec {
 	return noopCodec{}
 }