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response.go
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response.go
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/*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package responses
import (
"bytes"
"encoding/xml"
"fmt"
"io/ioutil"
"net/http"
"strings"
"github.com/aliyun/alibaba-cloud-sdk-go/sdk/errors"
)
type AcsResponse interface {
IsSuccess() bool
GetHttpStatus() int
GetHttpHeaders() map[string][]string
GetHttpContentString() string
GetHttpContentBytes() []byte
GetOriginHttpResponse() *http.Response
parseFromHttpResponse(httpResponse *http.Response) error
}
// Unmarshal object from http response body to target Response
func Unmarshal(response AcsResponse, httpResponse *http.Response, format string) (err error) {
err = response.parseFromHttpResponse(httpResponse)
if err != nil {
return
}
if !response.IsSuccess() {
err = errors.NewServerError(response.GetHttpStatus(), response.GetHttpContentString(), "")
return
}
if _, isCommonResponse := response.(*CommonResponse); isCommonResponse {
// common response need not unmarshal
return
}
if len(response.GetHttpContentBytes()) == 0 {
return
}
if strings.ToUpper(format) == "JSON" {
err = jsonParser.Unmarshal(response.GetHttpContentBytes(), response)
if err != nil {
err = errors.NewClientError(errors.JsonUnmarshalErrorCode, errors.JsonUnmarshalErrorMessage, err)
}
} else if strings.ToUpper(format) == "XML" {
err = xml.Unmarshal(response.GetHttpContentBytes(), response)
}
return
}
type BaseResponse struct {
httpStatus int
httpHeaders map[string][]string
httpContentString string
httpContentBytes []byte
originHttpResponse *http.Response
}
func (baseResponse *BaseResponse) GetHttpStatus() int {
return baseResponse.httpStatus
}
func (baseResponse *BaseResponse) GetHttpHeaders() map[string][]string {
return baseResponse.httpHeaders
}
func (baseResponse *BaseResponse) GetHttpContentString() string {
return baseResponse.httpContentString
}
func (baseResponse *BaseResponse) GetHttpContentBytes() []byte {
return baseResponse.httpContentBytes
}
func (baseResponse *BaseResponse) GetOriginHttpResponse() *http.Response {
return baseResponse.originHttpResponse
}
func (baseResponse *BaseResponse) IsSuccess() bool {
if baseResponse.GetHttpStatus() >= 200 && baseResponse.GetHttpStatus() < 300 {
return true
}
return false
}
func (baseResponse *BaseResponse) parseFromHttpResponse(httpResponse *http.Response) (err error) {
defer httpResponse.Body.Close()
body, err := ioutil.ReadAll(httpResponse.Body)
if err != nil {
return
}
baseResponse.httpStatus = httpResponse.StatusCode
baseResponse.httpHeaders = httpResponse.Header
baseResponse.httpContentBytes = body
baseResponse.httpContentString = string(body)
baseResponse.originHttpResponse = httpResponse
return
}
func (baseResponse *BaseResponse) String() string {
resultBuilder := bytes.Buffer{}
// statusCode
// resultBuilder.WriteString("\n")
resultBuilder.WriteString(fmt.Sprintf("%s %s\n", baseResponse.originHttpResponse.Proto, baseResponse.originHttpResponse.Status))
// httpHeaders
//resultBuilder.WriteString("Headers:\n")
for key, value := range baseResponse.httpHeaders {
resultBuilder.WriteString(key + ": " + strings.Join(value, ";") + "\n")
}
resultBuilder.WriteString("\n")
// content
//resultBuilder.WriteString("Content:\n")
resultBuilder.WriteString(baseResponse.httpContentString + "\n")
return resultBuilder.String()
}
type CommonResponse struct {
*BaseResponse
}
func NewCommonResponse() (response *CommonResponse) {
return &CommonResponse{
BaseResponse: &BaseResponse{},
}
}