Add YAML binding for application/x-yaml.

binding/binding.go

@@ -18,6 +18,7 @@ const (
 	MIMEPROTOBUF          = "application/x-protobuf"
 	MIMEMSGPACK           = "application/x-msgpack"
 	MIMEMSGPACK2          = "application/msgpack"
+	MIMEYAML              = "application/x-yaml"
 )
 
 // Binding describes the interface which needs to be implemented for binding the
@@ -68,6 +69,7 @@ var (
 	FormMultipart = formMultipartBinding{}
 	ProtoBuf      = protobufBinding{}
 	MsgPack       = msgpackBinding{}
+	YAML          = yamlBinding{}
 )
 
 // Default returns the appropriate Binding instance based on the HTTP method
@@ -86,6 +88,8 @@ func Default(method, contentType string) Binding {
 		return ProtoBuf
 	case MIMEMSGPACK, MIMEMSGPACK2:
 		return MsgPack
+	case MIMEYAML:
+		return YAML
 	default: //case MIMEPOSTForm, MIMEMultipartPOSTForm:
 		return Form
 	}

binding/binding_body_test.go

@@ -19,12 +19,12 @@ func TestBindingBody(t *testing.T) {
 		want    string
 	}{
 		{
-			name:    "JSON bidning",
+			name:    "JSON binding",
 			binding: JSON,
 			body:    `{"foo":"FOO"}`,
 		},
 		{
-			name:    "XML bidning",
+			name:    "XML binding",
 			binding: XML,
 			body: `<?xml version="1.0" encoding="UTF-8"?>
 <root>
@@ -36,6 +36,11 @@ func TestBindingBody(t *testing.T) {
 			binding: MsgPack,
 			body:    msgPackBody(t),
 		},
+		{
+			name:    "YAML binding",
+			binding: YAML,
+			body:    `foo: FOO`,
+		},
 	} {
 		t.Logf("testing: %s", tt.name)
 		req := requestWithBody("POST", "/", tt.body)

binding/binding_test.go

@@ -190,6 +190,9 @@ func TestBindingDefault(t *testing.T) {
 
 	assert.Equal(t, MsgPack, Default("POST", MIMEMSGPACK))
 	assert.Equal(t, MsgPack, Default("PUT", MIMEMSGPACK2))
+
+	assert.Equal(t, YAML, Default("POST", MIMEYAML))
+	assert.Equal(t, YAML, Default("PUT", MIMEYAML))
 }
 
 func TestBindingJSON(t *testing.T) {
@@ -473,6 +476,20 @@ func TestBindingXMLFail(t *testing.T) {
 		"<map><foo>bar<foo></map>", "<map><bar>foo</bar></map>")
 }
 
+func TestBindingYAML(t *testing.T) {
+	testBodyBinding(t,
+		YAML, "yaml",
+		"/", "/",
+		`foo: bar`, `bar: foo`)
+}
+
+func TestBindingYAMLFail(t *testing.T) {
+	testBodyBindingFail(t,
+		YAML, "yaml",
+		"/", "/",
+		`foo:\nbar`, `bar: foo`)
+}
+
 func createFormPostRequest() *http.Request {
 	req, _ := http.NewRequest("POST", "/?foo=getfoo&bar=getbar", bytes.NewBufferString("foo=bar&bar=foo"))
 	req.Header.Set("Content-Type", MIMEPOSTForm)

binding/yaml.go

@@ -0,0 +1,35 @@
+// Copyright 2014 Manu Martinez-Almeida.  All rights reserved.
+// Use of this source code is governed by a MIT style
+// license that can be found in the LICENSE file.
+
+package binding
+
+import (
+	"bytes"
+	"io"
+	"net/http"
+
+	"gopkg.in/yaml.v2"
+)
+
+type yamlBinding struct{}
+
+func (yamlBinding) Name() string {
+	return "yaml"
+}
+
+func (yamlBinding) Bind(req *http.Request, obj interface{}) error {
+	return decodeYAML(req.Body, obj)
+}
+
+func (yamlBinding) BindBody(body []byte, obj interface{}) error {
+	return decodeYAML(bytes.NewReader(body), obj)
+}
+
+func decodeYAML(r io.Reader, obj interface{}) error {
+	decoder := yaml.NewDecoder(r)
+	if err := decoder.Decode(obj); err != nil {
+		return err
+	}
+	return validate(obj)
+}