105 lines
3 KiB
Go
105 lines
3 KiB
Go
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// Copyright 2015 go-swagger maintainers
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package middleware
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import (
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"net/http"
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"reflect"
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"github.com/go-openapi/errors"
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"github.com/go-openapi/runtime"
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"github.com/go-openapi/spec"
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"github.com/go-openapi/strfmt"
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)
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// RequestBinder binds and validates the data from a http request
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type untypedRequestBinder struct {
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Spec *spec.Swagger
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Parameters map[string]spec.Parameter
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Formats strfmt.Registry
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paramBinders map[string]*untypedParamBinder
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}
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// NewRequestBinder creates a new binder for reading a request.
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func newUntypedRequestBinder(parameters map[string]spec.Parameter, spec *spec.Swagger, formats strfmt.Registry) *untypedRequestBinder {
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binders := make(map[string]*untypedParamBinder)
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for fieldName, param := range parameters {
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binders[fieldName] = newUntypedParamBinder(param, spec, formats)
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}
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return &untypedRequestBinder{
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Parameters: parameters,
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paramBinders: binders,
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Spec: spec,
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Formats: formats,
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}
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}
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// Bind perform the databinding and validation
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func (o *untypedRequestBinder) Bind(request *http.Request, routeParams RouteParams, consumer runtime.Consumer, data interface{}) error {
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val := reflect.Indirect(reflect.ValueOf(data))
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isMap := val.Kind() == reflect.Map
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var result []error
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debugLog("binding %d parameters for %s %s", len(o.Parameters), request.Method, request.URL.EscapedPath())
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for fieldName, param := range o.Parameters {
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binder := o.paramBinders[fieldName]
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debugLog("binding parameter %s for %s %s", fieldName, request.Method, request.URL.EscapedPath())
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var target reflect.Value
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if !isMap {
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binder.Name = fieldName
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target = val.FieldByName(fieldName)
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}
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if isMap {
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tpe := binder.Type()
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if tpe == nil {
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if param.Schema.Type.Contains("array") {
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tpe = reflect.TypeOf([]interface{}{})
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} else {
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tpe = reflect.TypeOf(map[string]interface{}{})
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}
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}
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target = reflect.Indirect(reflect.New(tpe))
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}
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if !target.IsValid() {
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result = append(result, errors.New(500, "parameter name %q is an unknown field", binder.Name))
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continue
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}
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if err := binder.Bind(request, routeParams, consumer, target); err != nil {
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result = append(result, err)
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continue
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}
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if binder.validator != nil {
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rr := binder.validator.Validate(target.Interface())
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if rr != nil && rr.HasErrors() {
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result = append(result, rr.AsError())
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}
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}
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if isMap {
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val.SetMapIndex(reflect.ValueOf(param.Name), target)
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}
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}
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if len(result) > 0 {
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return errors.CompositeValidationError(result...)
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}
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return nil
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}
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