request_customizer.go raw

   1  // Copyright 2021-2023 The sacloud/go-http authors
   2  //
   3  // Licensed under the Apache License, Version 2.0 (the "License");
   4  // you may not use this file except in compliance with the License.
   5  // You may obtain a copy of the License at
   6  //
   7  //      http://www.apache.org/licenses/LICENSE-2.0
   8  //
   9  // Unless required by applicable law or agreed to in writing, software
  10  // distributed under the License is distributed on an "AS IS" BASIS,
  11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12  // See the License for the specific language governing permissions and
  13  // limitations under the License.
  14  
  15  package http
  16  
  17  import "net/http"
  18  
  19  // RequestCustomizer リクエスト前に*http.Requestのカスタマイズを行うためのfunc
  20  type RequestCustomizer func(r *http.Request) error
  21  
  22  // ComposeRequestCustomizer 任意の個数のRequestCustomizerを合成してRequestCustomizerを返す
  23  //
  24  // 複数のRequestCustomizerを指定した場合は先頭から呼びだされ、エラーを返したら即時returnする
  25  func ComposeRequestCustomizer(funcs ...RequestCustomizer) RequestCustomizer {
  26  	return func(r *http.Request) error {
  27  		for _, fn := range funcs {
  28  			if err := fn(r); err != nil {
  29  				return err
  30  			}
  31  		}
  32  		return nil
  33  	}
  34  }
  35