From ed03102ef0b08c552bc3d0a73fbd98307461abcc Mon Sep 17 00:00:00 2001 From: Valentine Oragbakosi Date: Fri, 27 May 2022 16:34:43 -0800 Subject: [PATCH] [GIN-001] - Add TOML bining for gin (#3081) Co-authored-by: GitstartHQ --- README.md | 6 +++--- binding/binding.go | 4 ++++ binding/binding_nomsgpack.go | 4 ++++ binding/binding_test.go | 17 +++++++++++++++++ binding/toml.go | 31 +++++++++++++++++++++++++++++++ binding/toml_test.go | 22 ++++++++++++++++++++++ context.go | 21 +++++++++++++++++++++ context_test.go | 17 +++++++++++++++++ go.mod | 1 + go.sum | 4 ++++ render/render.go | 1 + render/toml.go | 32 ++++++++++++++++++++++++++++++++ 12 files changed, 157 insertions(+), 3 deletions(-) create mode 100644 binding/toml.go create mode 100644 binding/toml_test.go create mode 100644 render/toml.go diff --git a/README.md b/README.md index af9a1e53..6b4cabb4 100644 --- a/README.md +++ b/README.md @@ -658,7 +658,7 @@ func main() { ### Model binding and validation -To bind a request body into a type, use model binding. We currently support binding of JSON, XML, YAML and standard form values (foo=bar&boo=baz). +To bind a request body into a type, use model binding. We currently support binding of JSON, XML, YAML, TOML and standard form values (foo=bar&boo=baz). Gin uses [**go-playground/validator/v10**](https://github.com/go-playground/validator) for validation. Check the full docs on tags usage [here](https://godoc.org/github.com/go-playground/validator#hdr-Baked_In_Validators_and_Tags). @@ -666,10 +666,10 @@ Note that you need to set the corresponding binding tag on all fields you want t Also, Gin provides two sets of methods for binding: - **Type** - Must bind - - **Methods** - `Bind`, `BindJSON`, `BindXML`, `BindQuery`, `BindYAML`, `BindHeader` + - **Methods** - `Bind`, `BindJSON`, `BindXML`, `BindQuery`, `BindYAML`, `BindHeader`, `BindTOML` - **Behavior** - These methods use `MustBindWith` under the hood. If there is a binding error, the request is aborted with `c.AbortWithError(400, err).SetType(ErrorTypeBind)`. This sets the response status code to 400 and the `Content-Type` header is set to `text/plain; charset=utf-8`. Note that if you try to set the response code after this, it will result in a warning `[GIN-debug] [WARNING] Headers were already written. Wanted to override status code 400 with 422`. If you wish to have greater control over the behavior, consider using the `ShouldBind` equivalent method. - **Type** - Should bind - - **Methods** - `ShouldBind`, `ShouldBindJSON`, `ShouldBindXML`, `ShouldBindQuery`, `ShouldBindYAML`, `ShouldBindHeader` + - **Methods** - `ShouldBind`, `ShouldBindJSON`, `ShouldBindXML`, `ShouldBindQuery`, `ShouldBindYAML`, `ShouldBindHeader`, `ShouldBindTOML`, - **Behavior** - These methods use `ShouldBindWith` under the hood. If there is a binding error, the error is returned and it is the developer's responsibility to handle the request and error appropriately. When using the Bind-method, Gin tries to infer the binder depending on the Content-Type header. If you are sure what you are binding, you can use `MustBindWith` or `ShouldBindWith`. diff --git a/binding/binding.go b/binding/binding.go index 703a1cf8..50510514 100644 --- a/binding/binding.go +++ b/binding/binding.go @@ -22,6 +22,7 @@ const ( MIMEMSGPACK = "application/x-msgpack" MIMEMSGPACK2 = "application/msgpack" MIMEYAML = "application/x-yaml" + MIMETOML = "application/toml" ) // Binding describes the interface which needs to be implemented for binding the @@ -83,6 +84,7 @@ var ( YAML = yamlBinding{} Uri = uriBinding{} Header = headerBinding{} + TOML = tomlBinding{} ) // Default returns the appropriate Binding instance based on the HTTP method @@ -103,6 +105,8 @@ func Default(method, contentType string) Binding { return MsgPack case MIMEYAML: return YAML + case MIMETOML: + return TOML case MIMEMultipartPOSTForm: return FormMultipart default: // case MIMEPOSTForm: diff --git a/binding/binding_nomsgpack.go b/binding/binding_nomsgpack.go index b3818549..7f6a904a 100644 --- a/binding/binding_nomsgpack.go +++ b/binding/binding_nomsgpack.go @@ -20,6 +20,7 @@ const ( MIMEMultipartPOSTForm = "multipart/form-data" MIMEPROTOBUF = "application/x-protobuf" MIMEYAML = "application/x-yaml" + MIMETOML = "application/toml" ) // Binding describes the interface which needs to be implemented for binding the @@ -79,6 +80,7 @@ var ( YAML = yamlBinding{} Uri = uriBinding{} Header = headerBinding{} + TOML = tomlBinding{} ) // Default returns the appropriate Binding instance based on the HTTP method @@ -99,6 +101,8 @@ func Default(method, contentType string) Binding { return YAML case MIMEMultipartPOSTForm: return FormMultipart + case MIMETOML: + return TOML default: // case MIMEPOSTForm: return Form } diff --git a/binding/binding_test.go b/binding/binding_test.go index d9746e26..f08e173f 100644 --- a/binding/binding_test.go +++ b/binding/binding_test.go @@ -165,6 +165,9 @@ func TestBindingDefault(t *testing.T) { assert.Equal(t, YAML, Default("POST", MIMEYAML)) assert.Equal(t, YAML, Default("PUT", MIMEYAML)) + + assert.Equal(t, TOML, Default("POST", MIMETOML)) + assert.Equal(t, TOML, Default("PUT", MIMETOML)) } func TestBindingJSONNilBody(t *testing.T) { @@ -454,6 +457,20 @@ func TestBindingXMLFail(t *testing.T) { "bar", "foo") } +func TestBindingTOML(t *testing.T) { + testBodyBinding(t, + TOML, "toml", + "/", "/", + `foo="bar"`, `bar="foo"`) +} + +func TestBindingTOMLFail(t *testing.T) { + testBodyBindingFail(t, + TOML, "toml", + "/", "/", + `foo=\n"bar"`, `bar="foo"`) +} + func TestBindingYAML(t *testing.T) { testBodyBinding(t, YAML, "yaml", diff --git a/binding/toml.go b/binding/toml.go new file mode 100644 index 00000000..5b9ad165 --- /dev/null +++ b/binding/toml.go @@ -0,0 +1,31 @@ +package binding + +import ( + "bytes" + "io" + "net/http" + + "github.com/pelletier/go-toml/v2" +) + +type tomlBinding struct{} + +func (tomlBinding) Name() string { + return "toml" +} + +func decodeToml(r io.Reader, obj any) error { + decoder := toml.NewDecoder(r) + if err := decoder.Decode(obj); err != nil { + return err + } + return decoder.Decode(obj) +} + +func (tomlBinding) Bind(req *http.Request, obj any) error { + return decodeToml(req.Body, obj) +} + +func (tomlBinding) BindBody(body []byte, obj any) error { + return decodeToml(bytes.NewReader(body), obj) +} diff --git a/binding/toml_test.go b/binding/toml_test.go new file mode 100644 index 00000000..2bc0e3a4 --- /dev/null +++ b/binding/toml_test.go @@ -0,0 +1,22 @@ +// Copyright 2022 Gin Core Team. 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 ( + "testing" + + "github.com/stretchr/testify/assert" + "github.com/stretchr/testify/require" +) + +func TestTOMLBindingBindBody(t *testing.T) { + var s struct { + Foo string `toml:"foo"` + } + tomlBody := `foo="FOO"` + err := tomlBinding{}.BindBody([]byte(tomlBody), &s) + require.NoError(t, err) + assert.Equal(t, "FOO", s.Foo) +} diff --git a/context.go b/context.go index 5e53aaf0..ecbd3dac 100644 --- a/context.go +++ b/context.go @@ -34,6 +34,7 @@ const ( MIMEPOSTForm = binding.MIMEPOSTForm MIMEMultipartPOSTForm = binding.MIMEMultipartPOSTForm MIMEYAML = binding.MIMEYAML + MIMETOML = binding.MIMETOML ) // BodyBytesKey indicates a default body bytes key. @@ -636,6 +637,11 @@ func (c *Context) BindYAML(obj any) error { return c.MustBindWith(obj, binding.YAML) } +// BindTOML is a shortcut for c.MustBindWith(obj, binding.TOML). +func (c *Context) BindTOML(obj interface{}) error { + return c.MustBindWith(obj, binding.TOML) +} + // BindHeader is a shortcut for c.MustBindWith(obj, binding.Header). func (c *Context) BindHeader(obj any) error { return c.MustBindWith(obj, binding.Header) @@ -694,6 +700,11 @@ func (c *Context) ShouldBindYAML(obj any) error { return c.ShouldBindWith(obj, binding.YAML) } +// ShouldBindTOML is a shortcut for c.ShouldBindWith(obj, binding.TOML). +func (c *Context) ShouldBindTOML(obj interface{}) error { + return c.ShouldBindWith(obj, binding.TOML) +} + // ShouldBindHeader is a shortcut for c.ShouldBindWith(obj, binding.Header). func (c *Context) ShouldBindHeader(obj any) error { return c.ShouldBindWith(obj, binding.Header) @@ -965,6 +976,11 @@ func (c *Context) YAML(code int, obj any) { c.Render(code, render.YAML{Data: obj}) } +// TOML serializes the given struct as TOML into the response body. +func (c *Context) TOML(code int, obj interface{}) { + c.Render(code, render.TOML{Data: obj}) +} + // ProtoBuf serializes the given struct as ProtoBuf into the response body. func (c *Context) ProtoBuf(code int, obj any) { c.Render(code, render.ProtoBuf{Data: obj}) @@ -1069,6 +1085,7 @@ type Negotiate struct { XMLData any YAMLData any Data any + TOMLData any } // Negotiate calls different Render according to acceptable Accept format. @@ -1090,6 +1107,10 @@ func (c *Context) Negotiate(code int, config Negotiate) { data := chooseData(config.YAMLData, config.Data) c.YAML(code, data) + case binding.MIMETOML: + data := chooseData(config.TOMLData, config.Data) + c.TOML(code, data) + default: c.AbortWithError(http.StatusNotAcceptable, errors.New("the accepted formats are not offered by the server")) // nolint: errcheck } diff --git a/context_test.go b/context_test.go index 20038e93..7e4d0b3f 100644 --- a/context_test.go +++ b/context_test.go @@ -1773,6 +1773,23 @@ func TestContextShouldBindWithYAML(t *testing.T) { assert.Equal(t, 0, w.Body.Len()) } +func TestContextShouldBindWithTOML(t *testing.T) { + w := httptest.NewRecorder() + c, _ := CreateTestContext(w) + + c.Request, _ = http.NewRequest("POST", "/", bytes.NewBufferString("foo='bar'\nbar= 'foo'")) + c.Request.Header.Add("Content-Type", MIMETOML) // set fake content-type + + var obj struct { + Foo string `toml:"foo"` + Bar string `toml:"bar"` + } + assert.NoError(t, c.ShouldBindTOML(&obj)) + assert.Equal(t, "foo", obj.Bar) + assert.Equal(t, "bar", obj.Foo) + assert.Equal(t, 0, w.Body.Len()) +} + func TestContextBadAutoShouldBind(t *testing.T) { w := httptest.NewRecorder() c, _ := CreateTestContext(w) diff --git a/go.mod b/go.mod index 2da1fe35..e519b36e 100644 --- a/go.mod +++ b/go.mod @@ -8,6 +8,7 @@ require ( github.com/goccy/go-json v0.9.7 github.com/json-iterator/go v1.1.12 github.com/mattn/go-isatty v0.0.14 + github.com/pelletier/go-toml/v2 v2.0.0-beta.6 github.com/stretchr/testify v1.7.1 github.com/ugorji/go/codec v1.2.7 golang.org/x/net v0.0.0-20210226172049-e18ecbb05110 diff --git a/go.sum b/go.sum index d7a221f1..d7555f9a 100644 --- a/go.sum +++ b/go.sum @@ -36,6 +36,8 @@ github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421 h1:ZqeYNhU3OH github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q= github.com/modern-go/reflect2 v1.0.2 h1:xBagoLtFs94CBntxluKeaWgTMpvLxC4ur3nMaC9Gz0M= github.com/modern-go/reflect2 v1.0.2/go.mod h1:yWuevngMOJpCy52FWWMvUC8ws7m/LJsjYzDa0/r8luk= +github.com/pelletier/go-toml/v2 v2.0.0-beta.6 h1:JFNqj2afbbhCqTiyN16D7Tudc/aaDzE2FBDk+VlBQnE= +github.com/pelletier/go-toml/v2 v2.0.0-beta.6/go.mod h1:ke6xncR3W76Ba8xnVxkrZG0js6Rd2BsQEAYrfgJ6eQA= github.com/pkg/diff v0.0.0-20210226163009-20ebb0f2a09e/go.mod h1:pJLUxLENpZxwdsKMEsNbx1VGcRFpLqf3715MtcvvzbA= github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM= github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4= @@ -46,8 +48,10 @@ github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+ github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI= github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg= github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg= +github.com/stretchr/testify v1.7.1-0.20210427113832-6241f9ab9942/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg= github.com/stretchr/testify v1.7.1 h1:5TQK59W5E3v0r2duFAb7P95B6hEeOyEnHRa8MjYSMTY= github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg= +github.com/ugorji/go v1.2.7 h1:qYhyWUUd6WbiM+C6JZAUkIJt/1WrjzNHY9+KCIjVqTo= github.com/ugorji/go v1.2.7/go.mod h1:nF9osbDWLy6bDVv/Rtoh6QgnvNDpmCalQV5urGCCS6M= github.com/ugorji/go/codec v1.2.7 h1:YPXUKf7fYbp/y8xloBqZOw2qaVggbfwMlI8WM3wZUJ0= github.com/ugorji/go/codec v1.2.7/go.mod h1:WGN1fab3R1fzQlVQTkfxVtIBhWDRqOviHU95kRgeqEY= diff --git a/render/render.go b/render/render.go index bcd568bf..1fa48061 100644 --- a/render/render.go +++ b/render/render.go @@ -30,6 +30,7 @@ var ( _ Render = Reader{} _ Render = AsciiJSON{} _ Render = ProtoBuf{} + _ Render = TOML{} ) func writeContentType(w http.ResponseWriter, value []string) { diff --git a/render/toml.go b/render/toml.go new file mode 100644 index 00000000..1192c78c --- /dev/null +++ b/render/toml.go @@ -0,0 +1,32 @@ +package render + +import ( + "net/http" + + "github.com/pelletier/go-toml/v2" +) + +// TOML contains the given interface object. +type TOML struct { + Data any +} + +var TOMLContentType = []string{"application/toml; charset=utf-8"} + +// Render (TOML) marshals the given interface object and writes data with custom ContentType. +func (r TOML) Render(w http.ResponseWriter) error { + r.WriteContentType(w) + + bytes, err := toml.Marshal(r.Data) + if err != nil { + return err + } + + _, err = w.Write(bytes) + return err +} + +// WriteContentType (TOML) writes TOML ContentType for response. +func (r TOML) WriteContentType(w http.ResponseWriter) { + writeContentType(w, TOMLContentType) +}