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go-server.controller-api.mustache Maven / Gradle / Ivy
{{>partial_header}}
package {{packageName}}
{{#operations}}
import (
"encoding/json"
{{#isBodyParam}}
{{^required}}
"errors"
"io"
{{/required}}
{{/isBodyParam}}
"net/http"
"strings"
{{#imports}} "{{import}}"
{{/imports}}
{{#routers}}
{{#mux}}
"github.com/gorilla/mux"
{{/mux}}
{{#chi}}
"github.com/go-chi/chi/v5"
{{/chi}}
{{/routers}}
)
{{/operations}}
// {{classname}}Controller binds http requests to an api service and writes the service results to the http response
type {{classname}}Controller struct {
service {{classname}}Servicer
errorHandler ErrorHandler
}
// {{classname}}Option for how the controller is set up.
type {{classname}}Option func(*{{classname}}Controller)
// With{{classname}}ErrorHandler inject ErrorHandler into controller
func With{{classname}}ErrorHandler(h ErrorHandler) {{classname}}Option {
return func(c *{{classname}}Controller) {
c.errorHandler = h
}
}
// New{{classname}}Controller creates a default api controller
func New{{classname}}Controller(s {{classname}}Servicer, opts ...{{classname}}Option) Router {
controller := &{{classname}}Controller{
service: s,
errorHandler: DefaultErrorHandler,
}
for _, opt := range opts {
opt(controller)
}
return controller
}
// Routes returns all the api routes for the {{classname}}Controller
func (c *{{classname}}Controller) Routes() Routes {
return Routes{
{{#operations}}
{{#operation}}
"{{operationId}}": Route{
strings.ToUpper("{{httpMethod}}"),
"{{{basePathWithoutHost}}}{{{path}}}",
c.{{operationId}},
},
{{/operation}}
{{/operations}}
}
}{{#operations}}{{#operation}}
// {{nickname}} - {{{summary}}}
{{#isDeprecated}}
// Deprecated
{{/isDeprecated}}
func (c *{{classname}}Controller) {{nickname}}(w http.ResponseWriter, r *http.Request) {
{{#hasFormParams}}
{{#isMultipart}}
if err := r.ParseMultipartForm(32 << 20); err != nil {
c.errorHandler(w, r, &ParsingError{Err: err}, nil)
return
}
{{/isMultipart}}
{{^isMultipart}}
if err := r.ParseForm(); err != nil {
c.errorHandler(w, r, &ParsingError{Err: err}, nil)
return
}
{{/isMultipart}}
{{/hasFormParams}}
{{#routers}}
{{#mux}}
{{#hasPathParams}}
params := mux.Vars(r)
{{/hasPathParams}}
{{/mux}}
{{/routers}}
{{#hasQueryParams}}
query, err := parseQuery(r.URL.RawQuery)
if err != nil {
c.errorHandler(w, r, &ParsingError{Err: err}, nil)
return
}
{{/hasQueryParams}}
{{#allParams}}
{{#isPathParam}}
{{#isNumber}}
{{paramName}}Param, err := parseNumericParameter[float32](
{{#routers}}{{#mux}}params["{{baseName}}"]{{/mux}}{{#chi}}chi.URLParam(r, "{{baseName}}"){{/chi}}{{/routers}},{{#defaultValue}}
WithDefaultOrParse[float32]({{defaultValue}}, parseFloat32),{{/defaultValue}}{{^defaultValue}}{{#required}}
WithRequire[float32](parseFloat32),{{/required}}{{/defaultValue}}{{^defaultValue}}{{^required}}
WithParse[float32](parseFloat32),{{/required}}{{/defaultValue}}{{#minimum}}
WithMinimum[float32]({{minimum}}),{{/minimum}}{{#maximum}}
WithMaximum[float32]({{maximum}}),{{/maximum}}
)
if err != nil {
c.errorHandler(w, r, &ParsingError{Err: err}, nil)
return
}
{{/isNumber}}
{{#isFloat}}
{{paramName}}Param, err := parseNumericParameter[float32](
{{#routers}}{{#mux}}params["{{baseName}}"]{{/mux}}{{#chi}}chi.URLParam(r, "{{baseName}}"){{/chi}}{{/routers}},{{#defaultValue}}
WithDefaultOrParse[float32]({{defaultValue}}, parseFloat32),{{/defaultValue}}{{^defaultValue}}{{#required}}
WithRequire[float32](parseFloat32),{{/required}}{{/defaultValue}}{{^defaultValue}}{{^required}}
WithParse[float32](parseFloat32),{{/required}}{{/defaultValue}}{{#minimum}}
WithMinimum[float32]({{minimum}}),{{/minimum}}{{#maximum}}
WithMaximum[float32]({{maximum}}),{{/maximum}}
)
if err != nil {
c.errorHandler(w, r, &ParsingError{Err: err}, nil)
return
}
{{/isFloat}}
{{#isDouble}}
{{paramName}}Param, err := parseNumericParameter[float64](
{{#routers}}{{#mux}}params["{{baseName}}"]{{/mux}}{{#chi}}chi.URLParam(r, "{{baseName}}"){{/chi}}{{/routers}},{{#defaultValue}}
WithDefaultOrParse[float64]({{defaultValue}}, parseFloat64),{{/defaultValue}}{{^defaultValue}}{{#required}}
WithRequire[float64](parseFloat64),{{/required}}{{/defaultValue}}{{^defaultValue}}{{^required}}
WithParse[float64](parseFloat64),{{/required}}{{/defaultValue}}{{#minimum}}
WithMinimum[float64]({{minimum}}),{{/minimum}}{{#maximum}}
WithMaximum[float64]({{maximum}}),{{/maximum}}
)
if err != nil {
c.errorHandler(w, r, &ParsingError{Err: err}, nil)
return
}
{{/isDouble}}
{{#isLong}}
{{paramName}}Param, err := parseNumericParameter[int64](
{{#routers}}{{#mux}}params["{{baseName}}"]{{/mux}}{{#chi}}chi.URLParam(r, "{{baseName}}"){{/chi}}{{/routers}},{{#defaultValue}}
WithDefaultOrParse[int64]({{defaultValue}}, parseInt64),{{/defaultValue}}{{^defaultValue}}{{#required}}
WithRequire[int64](parseInt64),{{/required}}{{/defaultValue}}{{^defaultValue}}{{^required}}
WithParse[int64](parseInt64),{{/required}}{{/defaultValue}}{{#minimum}}
WithMinimum[int64]({{minimum}}),{{/minimum}}{{#maximum}}
WithMaximum[int64]({{maximum}}),{{/maximum}}
)
if err != nil {
c.errorHandler(w, r, &ParsingError{Err: err}, nil)
return
}
{{/isLong}}
{{#isInteger}}
{{paramName}}Param, err := parseNumericParameter[int32](
{{#routers}}{{#mux}}params["{{baseName}}"]{{/mux}}{{#chi}}chi.URLParam(r, "{{baseName}}"){{/chi}}{{/routers}},{{#defaultValue}}
WithDefaultOrParse[int32]({{defaultValue}}, parseInt32),{{/defaultValue}}{{^defaultValue}}{{#required}}
WithRequire[int32](parseInt32),{{/required}}{{/defaultValue}}{{^defaultValue}}{{^required}}
WithParse[int32](parseInt32),{{/required}}{{/defaultValue}}{{#minimum}}
WithMinimum[int32]({{minimum}}),{{/minimum}}{{#maximum}}
WithMaximum[int32]({{maximum}}),{{/maximum}}
)
if err != nil {
c.errorHandler(w, r, &ParsingError{Err: err}, nil)
return
}
{{/isInteger}}
{{#isDateTime}}
{{paramName}}Param, err := parseTime({{#routers}}{{#mux}}params["{{baseName}}"]{{/mux}}{{#chi}}chi.URLParam(r, "{{baseName}}"){{/chi}}{{/routers}})
if err != nil {
c.errorHandler(w, r, &ParsingError{Err: err}, nil)
return
}
{{/isDateTime}}
{{^isNumber}}
{{^isFloat}}
{{^isDouble}}
{{^isLong}}
{{^isInteger}}
{{^isDateTime}}
{{^isEnumRef}}
{{paramName}}Param := {{#routers}}{{#mux}}params["{{baseName}}"]{{/mux}}{{#chi}}chi.URLParam(r, "{{baseName}}"){{/chi}}{{/routers}}
if {{paramName}}Param == "" {
c.errorHandler(w, r, &RequiredError{"{{baseName}}"}, nil)
return
}
{{/isEnumRef}}
{{#isEnumRef}}
{{paramName}}Param, err := New{{dataType}}FromValue({{#routers}}{{#mux}}params["{{baseName}}"]{{/mux}}{{#chi}}chi.URLParam(r, "{{baseName}}"){{/chi}}{{/routers}})
if err != nil {
c.errorHandler(w, r, &ParsingError{Err: err}, nil)
return
}
{{/isEnumRef}}
{{/isDateTime}}
{{/isInteger}}
{{/isLong}}
{{/isDouble}}
{{/isFloat}}
{{/isNumber}}
{{/isPathParam}}
{{#isQueryParam}}
{{#isDateTime}}
var {{paramName}}Param {{#isNullable}}*{{/isNullable}}time.Time
if query.Has("{{baseName}}"){
param, err := parseTime(query.Get("{{baseName}}"))
if err != nil {
c.errorHandler(w, r, &ParsingError{Err: err}, nil)
return
}
{{paramName}}Param = {{#isNullable}}&{{/isNullable}}param
} else {
{{#required}}
c.errorHandler(w, r, &RequiredError{"{{baseName}}"}, nil)
return
{{/required}}
}
{{/isDateTime}}
{{#isNumber}}
var {{paramName}}Param {{#isNullable}}*{{/isNullable}}float32
if query.Has("{{baseName}}") {
param, err := parseNumericParameter[float32](
query.Get("{{baseName}}"),
WithParse[float32](parseFloat32),{{#minimum}}
WithMinimum[float32]({{minimum}}),{{/minimum}}{{#maximum}}
WithMaximum[float32]({{maximum}}),{{/maximum}}
)
if err != nil {
c.errorHandler(w, r, &ParsingError{Err: err}, nil)
return
}
{{paramName}}Param = {{#isNullable}}&{{/isNullable}}param
} else {
{{#required}}
c.errorHandler(w, r, &RequiredError{Field: "{{baseName}}"}, nil)
return
{{/required}}
{{^required}}
{{#defaultValue}}
var param float32 = {{defaultValue}}
{{paramName}}Param = {{#isNullable}}&{{/isNullable}}param
{{/defaultValue}}
{{/required}}
}
{{/isNumber}}
{{#isFloat}}
var {{paramName}}Param {{#isNullable}}*{{/isNullable}}float32
if query.Has("{{baseName}}") {
param, err := parseNumericParameter[float32](
query.Get("{{baseName}}"),
WithParse[float32](parseFloat32),{{#minimum}}
WithMinimum[float32]({{minimum}}),{{/minimum}}{{#maximum}}
WithMaximum[float32]({{maximum}}),{{/maximum}}
)
if err != nil {
c.errorHandler(w, r, &ParsingError{Err: err}, nil)
return
}
{{paramName}}Param = {{#isNullable}}&{{/isNullable}}param
} else {
{{#required}}
c.errorHandler(w, r, &RequiredError{Field: "{{baseName}}"}, nil)
return
{{/required}}
{{^required}}
{{#defaultValue}}
var param float32 = {{defaultValue}}
{{paramName}}Param = {{#isNullable}}&{{/isNullable}}param
{{/defaultValue}}
{{/required}}
}
{{/isFloat}}
{{#isDouble}}
var {{paramName}}Param {{#isNullable}}*{{/isNullable}}float64
if query.Has("{{baseName}}") {
param, err := parseNumericParameter[float64](
query.Get("{{baseName}}"),
WithParse[float64](parseFloat64),{{#minimum}}
WithMinimum[float64]({{minimum}}),{{/minimum}}{{#maximum}}
WithMaximum[float64]({{maximum}}),{{/maximum}}
)
if err != nil {
c.errorHandler(w, r, &ParsingError{Err: err}, nil)
return
}
{{paramName}}Param = {{#isNullable}}&{{/isNullable}}param
} else {
{{#required}}
c.errorHandler(w, r, &RequiredError{Field: "{{baseName}}"}, nil)
return
{{/required}}
{{^required}}
{{#defaultValue}}
var param float64 = {{defaultValue}}
{{paramName}}Param = {{#isNullable}}&{{/isNullable}}param
{{/defaultValue}}
{{/required}}
}
{{/isDouble}}
{{#isLong}}
var {{paramName}}Param {{#isNullable}}*{{/isNullable}}int64
if query.Has("{{baseName}}") {
param, err := parseNumericParameter[int64](
query.Get("{{baseName}}"),
WithParse[int64](parseInt64),{{#minimum}}
WithMinimum[int64]({{minimum}}),{{/minimum}}{{#maximum}}
WithMaximum[int64]({{maximum}}),{{/maximum}}
)
if err != nil {
c.errorHandler(w, r, &ParsingError{Err: err}, nil)
return
}
{{paramName}}Param = {{#isNullable}}&{{/isNullable}}param
} else {
{{#required}}
c.errorHandler(w, r, &RequiredError{Field: "{{baseName}}"}, nil)
return
{{/required}}
{{^required}}
{{#defaultValue}}
var param int64 = {{defaultValue}}
{{paramName}}Param = {{#isNullable}}&{{/isNullable}}param
{{/defaultValue}}
{{/required}}
}
{{/isLong}}
{{#isInteger}}
var {{paramName}}Param {{#isNullable}}*{{/isNullable}}int32
if query.Has("{{baseName}}") {
param, err := parseNumericParameter[int32](
query.Get("{{baseName}}"),
WithParse[int32](parseInt32),{{#minimum}}
WithMinimum[int32]({{minimum}}),{{/minimum}}{{#maximum}}
WithMaximum[int32]({{maximum}}),{{/maximum}}
)
if err != nil {
c.errorHandler(w, r, &ParsingError{Err: err}, nil)
return
}
{{paramName}}Param = {{#isNullable}}&{{/isNullable}}param
} else {
{{#required}}
c.errorHandler(w, r, &RequiredError{Field: "{{baseName}}"}, nil)
return
{{/required}}
{{^required}}
{{#defaultValue}}
var param int32 = {{defaultValue}}
{{paramName}}Param = {{#isNullable}}&{{/isNullable}}param
{{/defaultValue}}
{{/required}}
}
{{/isInteger}}
{{#isBoolean}}
var {{paramName}}Param {{#isNullable}}*{{/isNullable}}bool
if query.Has("{{baseName}}") {
param, err := parseBoolParameter(
query.Get("{{baseName}}"),
WithParse[bool](parseBool),{{#minimum}}
WithMinimum[bool]({{minimum}}),{{/minimum}}{{#maximum}}
WithMaximum[bool]({{maximum}}),{{/maximum}}
)
if err != nil {
c.errorHandler(w, r, &ParsingError{Err: err}, nil)
return
}
{{paramName}}Param = {{#isNullable}}&{{/isNullable}}param
} else {
{{#required}}
c.errorHandler(w, r, &RequiredError{Field: "{{baseName}}"}, nil)
return
{{/required}}
{{^required}}
{{#defaultValue}}
var param bool = {{defaultValue}}
{{paramName}}Param = {{#isNullable}}&{{/isNullable}}param
{{/defaultValue}}
{{/required}}
}
{{/isBoolean}}
{{#isArray}}
{{#items.isNumber}}
{{paramName}}Param, err := parseNumericArrayParameter[float32](
query.Get("{{baseName}}"), ",", {{required}},
WithParse[float32](parseFloat32),{{#minimum}}
WithMinimum[float32]({{minimum}}),{{/minimum}}{{#maximum}}
WithMaximum[float32]({{maximum}}),{{/maximum}}
)
if err != nil {
c.errorHandler(w, r, &ParsingError{Err: err}, nil)
return
}
{{/items.isNumber}}
{{#items.isFloat}}
{{paramName}}Param, err := parseNumericArrayParameter[float32](
query.Get("{{baseName}}"), ",", {{required}},
WithParse[float32](parseFloat32),{{#minimum}}
WithMinimum[float32]({{minimum}}),{{/minimum}}{{#maximum}}
WithMaximum[float32]({{maximum}}),{{/maximum}}
)
if err != nil {
c.errorHandler(w, r, &ParsingError{Err: err}, nil)
return
}
{{/items.isFloat}}
{{#items.isDouble}}
{{paramName}}Param, err := parseNumericArrayParameter[float64](
query.Get("{{baseName}}"), ",", {{required}},
WithParse[float64](parseFloat64),{{#minimum}}
WithMinimum[float64]({{minimum}}),{{/minimum}}{{#maximum}}
WithMaximum[float64]({{maximum}}),{{/maximum}}
)
if err != nil {
c.errorHandler(w, r, &ParsingError{Err: err}, nil)
return
}
{{/items.isDouble}}
{{#items.isLong}}
{{paramName}}Param, err := parseNumericArrayParameter[int64](
query.Get("{{baseName}}"), ",", {{required}},
WithParse[int64](parseInt64),{{#minimum}}
WithMinimum[int64]({{minimum}}),{{/minimum}}{{#maximum}}
WithMaximum[int64]({{maximum}}),{{/maximum}}
)
if err != nil {
c.errorHandler(w, r, &ParsingError{Err: err}, nil)
return
}
{{/items.isLong}}
{{#items.isInteger}}
{{paramName}}Param, err := parseNumericArrayParameter[int32](
query.Get("{{baseName}}"), ",", {{required}},
WithParse[int32](parseInt32),{{#minimum}}
WithMinimum[int32]({{minimum}}),{{/minimum}}{{#maximum}}
WithMaximum[int32]({{maximum}}),{{/maximum}}
)
if err != nil {
c.errorHandler(w, r, &ParsingError{Err: err}, nil)
return
}
{{/items.isInteger}}
{{#items.isDateTime}}
{{paramName}}Param, err := parseTimes(query.Get("{{baseName"}}))
if err != nil {
c.errorHandler(w, r, &ParsingError{Err: err}, nil)
return
}
{{/items.isDateTime}}
{{^items.isNumber}}
{{^items.isFloat}}
{{^items.isDouble}}
{{^items.isLong}}
{{^items.isInteger}}
{{^items.isEnumRef}}
var {{paramName}}Param []string
if query.Has("{{baseName}}") {
{{paramName}}Param = strings.Split(query.Get("{{baseName}}"), ",")
}
{{/items.isEnumRef}}
{{#items.isEnumRef}}
var {{paramName}}Param []{{items.dataType}}
if query.Has("{{baseName}}") {
paramSplits := strings.Split(query.Get("{{baseName}}"), ",")
{{paramName}}Param = make([]{{items.dataType}}, 0, len(paramSplits))
for _, param := range paramSplits {
paramEnum, err := New{{items.dataType}}FromValue(param)
if err != nil {
c.errorHandler(w, r, &ParsingError{Err: err}, nil)
return
}
{{paramName}}Param = append({{paramName}}Param, paramEnum)
}
}
{{/items.isEnumRef}}
{{/items.isInteger}}
{{/items.isLong}}
{{/items.isDouble}}
{{/items.isFloat}}
{{/items.isNumber}}
{{/isArray}}
{{^isNumber}}
{{^isFloat}}
{{^isDouble}}
{{^isLong}}
{{^isInteger}}
{{^isBoolean}}
{{^isArray}}
{{^isDateTime}}
var {{paramName}}Param {{#isNullable}}*{{/isNullable}}{{dataType}}
if query.Has("{{baseName}}") {
param := {{^isString}}{{dataType}}({{/isString}}query.Get("{{baseName}}"){{^isString}}){{/isString}}
{{paramName}}Param = {{#isNullable}}&{{/isNullable}}param
} else {
{{#required}}
c.errorHandler(w, r, &RequiredError{Field: "{{baseName}}"}, nil)
return
{{/required}}
{{^required}}
{{#defaultValue}}
param := {{^isString}}{{dataType}}({{/isString}}{{defaultValue}}{{^isString}}){{/isString}}
{{paramName}}Param = {{#isNullable}}&{{/isNullable}}param
{{/defaultValue}}
{{/required}}
}
{{/isDateTime}}
{{/isArray}}
{{/isBoolean}}
{{/isInteger}}
{{/isLong}}
{{/isDouble}}
{{/isFloat}}
{{/isNumber}}
{{/isQueryParam}}
{{#isFormParam}}
{{#isFile}}
var {{paramName}}Param {{#isArray}}[]*os.File{{/isArray}}{{^isArray}}*os.File{{/isArray}}
{
{{#isArray}}
param, err := ReadFormFilesToTempFiles(r, "{{baseName}}")
{{/isArray}}
{{^isArray}}
param, err := ReadFormFileToTempFile(r, "{{baseName}}")
{{/isArray}}
if err != nil {
c.errorHandler(w, r, &ParsingError{Err: err}, nil)
return
}
{{paramName}}Param = param
}
{{/isFile}}
{{#isLong}}{{#isArray}}
{{paramName}}Param, err := parseNumericArrayParameter[int64](
r.FormValue("{{baseName}}"), ",", {{required}},
WithParse[int64](parseInt64),{{#minimum}}
WithMinimum[int64]({{minimum}}),{{/minimum}}{{#maximum}}
WithMaximum[int64]({{maximum}}),{{/maximum}}
)
if err != nil {
c.errorHandler(w, r, &ParsingError{Err: err}, nil)
return
}
{{/isArray}}{{/isLong}}
{{#isInteger}}{{#isArray}}
{{paramName}}Param, err := parseNumericArrayParameter[int32](
r.FormValue("{{baseName}}"), ",", {{required}},
WithParse[int32](parseInt32),{{#minimum}}
WithMinimum[int32]({{minimum}}),{{/minimum}}{{#maximum}}
WithMaximum[int32]({{maximum}}),{{/maximum}}
)
if err != nil {
c.errorHandler(w, r, &ParsingError{Err: err}, nil)
return
}
{{/isArray}}{{/isInteger}}
{{^isFile}}
{{^isLong}}
{{#isArray}}
{{paramName}}Param := strings.Split(r.FormValue("{{baseName}}"), ",")
{{/isArray}}
{{^isArray}}
{{paramName}}Param := r.FormValue("{{baseName}}")
{{/isArray}}
{{/isLong}}
{{/isFile}}
{{/isFormParam}}
{{#isHeaderParam}}
{{paramName}}Param := r.Header.Get("{{baseName}}")
{{/isHeaderParam}}
{{#isBodyParam}}
{{paramName}}Param := {{dataType}}{}
d := json.NewDecoder(r.Body)
{{^isAdditionalPropertiesTrue}}
d.DisallowUnknownFields()
{{/isAdditionalPropertiesTrue}}
if err := d.Decode(&{{paramName}}Param); err != nil {{^required}}&& !errors.Is(err, io.EOF) {{/required}}{
c.errorHandler(w, r, &ParsingError{Err: err}, nil)
return
}
{{#isArray}}
{{#items.isModel}}
for _, el := range {{paramName}}Param {
if err := Assert{{baseType}}Required(el); err != nil {
c.errorHandler(w, r, err, nil)
return
}
}
{{/items.isModel}}
{{/isArray}}
{{^isArray}}
{{#isModel}}
if err := Assert{{baseType}}Required({{paramName}}Param); err != nil {
c.errorHandler(w, r, err, nil)
return
}
if err := Assert{{baseType}}Constraints({{paramName}}Param); err != nil {
c.errorHandler(w, r, err, nil)
return
}
{{/isModel}}
{{/isArray}}
{{/isBodyParam}}
{{/allParams}}
result, err := c.service.{{nickname}}(r.Context(){{#allParams}}, {{paramName}}Param{{/allParams}})
// If an error occurred, encode the error with the status code
if err != nil {
c.errorHandler(w, r, err, &result)
return
}
// If no error, encode the body and the result code
EncodeJSONResponse(result.Body, &result.Code,{{#addResponseHeaders}} result.Headers,{{/addResponseHeaders}} w)
}{{/operation}}{{/operations}}
