1package autorest
2
3// Copyright 2017 Microsoft Corporation
4//
5//  Licensed under the Apache License, Version 2.0 (the "License");
6//  you may not use this file except in compliance with the License.
7//  You may obtain a copy of the License at
8//
9//      http://www.apache.org/licenses/LICENSE-2.0
10//
11//  Unless required by applicable law or agreed to in writing, software
12//  distributed under the License is distributed on an "AS IS" BASIS,
13//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14//  See the License for the specific language governing permissions and
15//  limitations under the License.
16
17import (
18	"bytes"
19	"io"
20	"io/ioutil"
21	"net/http"
22)
23
24// NewRetriableRequest returns a wrapper around an HTTP request that support retry logic.
25func NewRetriableRequest(req *http.Request) *RetriableRequest {
26	return &RetriableRequest{req: req}
27}
28
29// Request returns the wrapped HTTP request.
30func (rr *RetriableRequest) Request() *http.Request {
31	return rr.req
32}
33
34func (rr *RetriableRequest) prepareFromByteReader() (err error) {
35	// fall back to making a copy (only do this once)
36	b := []byte{}
37	if rr.req.ContentLength > 0 {
38		b = make([]byte, rr.req.ContentLength)
39		_, err = io.ReadFull(rr.req.Body, b)
40		if err != nil {
41			return err
42		}
43	} else {
44		b, err = ioutil.ReadAll(rr.req.Body)
45		if err != nil {
46			return err
47		}
48	}
49	rr.br = bytes.NewReader(b)
50	rr.req.Body = ioutil.NopCloser(rr.br)
51	return err
52}
53