95 lines
2.2 KiB
Go
95 lines
2.2 KiB
Go
package request
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import (
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"bytes"
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"encoding/json"
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"fmt"
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"io"
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"io/ioutil"
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"net/http"
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)
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var (
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// URLEncoding specifies application/x-www-form-urlencoded
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URLEncoding = map[string]string{"Content-Type": "application/x-www-form-urlencoded"}
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// JSONEncoding specifies application/json
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JSONEncoding = map[string]string{"Content-Type": "application/json"}
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)
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// StatusError indicates unsuccessful http response
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type StatusError struct {
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resp *http.Response
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}
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// NewStatusError create new StatusError for given response
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func NewStatusError(resp *http.Response) StatusError {
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return StatusError{resp: resp}
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}
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func (e StatusError) Error() string {
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return fmt.Sprintf("unexpected status: %d", e.resp.StatusCode)
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}
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// Response returns the respose with the unexpected error
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func (e StatusError) Response() *http.Response {
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return e.resp
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}
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// StatusCode returns the respose's status code
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func (e StatusError) StatusCode() int {
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return e.resp.StatusCode
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}
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// HasStatus returns true if the respose's status code matches any of the given codes
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func (e StatusError) HasStatus(codes ...int) bool {
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for _, code := range codes {
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if e.resp.StatusCode == code {
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return true
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}
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}
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return false
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}
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// ReadBody reads HTTP response and returns error on response codes other than HTTP 2xx. It closes the request body after reading.
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func ReadBody(resp *http.Response) ([]byte, error) {
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defer resp.Body.Close()
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b, err := ioutil.ReadAll(resp.Body)
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if err != nil {
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return []byte{}, err
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}
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// maintain body after reading
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resp.Body = ioutil.NopCloser(bytes.NewBuffer(b))
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if resp.StatusCode < 200 || resp.StatusCode >= 300 {
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return b, StatusError{resp: resp}
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}
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return b, nil
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}
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// DecodeJSON reads HTTP response and decodes JSON body if error is nil
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func DecodeJSON(resp *http.Response, res interface{}) error {
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b, err := ReadBody(resp)
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if err == nil {
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err = json.Unmarshal(b, &res)
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}
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return err
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}
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// New builds and executes HTTP request and returns the response
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func New(method, uri string, data io.Reader, headers ...map[string]string) (*http.Request, error) {
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req, err := http.NewRequest(method, uri, data)
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if err == nil {
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for _, headers := range headers {
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for k, v := range headers {
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req.Header.Add(k, v)
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}
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}
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}
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return req, err
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}
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