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152 lines (126 loc) · 3.48 KB
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Copy pathrequest.go
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152 lines (126 loc) · 3.48 KB
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// Copyright 2018 Frédéric Guillot. All rights reserved.
// Use of this source code is governed by the Apache 2.0
// license that can be found in the LICENSE file.
package client // import "miniflux.app/client"
import (
"bytes"
"encoding/json"
"errors"
"fmt"
"io"
"io/ioutil"
"log"
"net/http"
"net/url"
"time"
)
const (
userAgent = "Miniflux Client Library"
defaultTimeout = 80
)
// List of exposed errors.
var (
ErrNotAuthorized = errors.New("miniflux: unauthorized (bad credentials)")
ErrForbidden = errors.New("miniflux: access forbidden")
ErrServerError = errors.New("miniflux: internal server error")
ErrNotFound = errors.New("miniflux: resource not found")
)
type errorResponse struct {
ErrorMessage string `json:"error_message"`
}
type request struct {
endpoint string
username string
password string
apiKey string
}
func (r *request) Get(path string) (io.ReadCloser, error) {
return r.execute(http.MethodGet, path, nil)
}
func (r *request) Post(path string, data interface{}) (io.ReadCloser, error) {
return r.execute(http.MethodPost, path, data)
}
func (r *request) PostFile(path string, f io.ReadCloser) (io.ReadCloser, error) {
return r.execute(http.MethodPost, path, f)
}
func (r *request) Put(path string, data interface{}) (io.ReadCloser, error) {
return r.execute(http.MethodPut, path, data)
}
func (r *request) Delete(path string) (io.ReadCloser, error) {
return r.execute(http.MethodDelete, path, nil)
}
func (r *request) execute(method, path string, data interface{}) (io.ReadCloser, error) {
if r.endpoint[len(r.endpoint)-1:] == "/" {
r.endpoint = r.endpoint[:len(r.endpoint)-1]
}
u, err := url.Parse(r.endpoint + path)
if err != nil {
return nil, err
}
request := &http.Request{
URL: u,
Method: method,
Header: r.buildHeaders(),
}
if r.username != "" && r.password != "" {
request.SetBasicAuth(r.username, r.password)
}
if data != nil {
switch data.(type) {
case io.ReadCloser:
request.Body = data.(io.ReadCloser)
default:
request.Body = ioutil.NopCloser(bytes.NewBuffer(r.toJSON(data)))
}
}
client := r.buildClient()
response, err := client.Do(request)
if err != nil {
return nil, err
}
switch response.StatusCode {
case http.StatusUnauthorized:
return nil, ErrNotAuthorized
case http.StatusForbidden:
return nil, ErrForbidden
case http.StatusInternalServerError:
return nil, ErrServerError
case http.StatusNotFound:
return nil, ErrNotFound
case http.StatusBadRequest:
defer response.Body.Close()
var resp errorResponse
decoder := json.NewDecoder(response.Body)
if err := decoder.Decode(&resp); err != nil {
return nil, fmt.Errorf("miniflux: bad request error (%v)", err)
}
return nil, fmt.Errorf("miniflux: bad request (%s)", resp.ErrorMessage)
}
if response.StatusCode > 400 {
return nil, fmt.Errorf("miniflux: status code=%d", response.StatusCode)
}
return response.Body, nil
}
func (r *request) buildClient() http.Client {
return http.Client{
Timeout: time.Duration(defaultTimeout * time.Second),
}
}
func (r *request) buildHeaders() http.Header {
headers := make(http.Header)
headers.Add("User-Agent", userAgent)
headers.Add("Content-Type", "application/json")
headers.Add("Accept", "application/json")
if r.apiKey != "" {
headers.Add("X-Auth-Token", r.apiKey)
}
return headers
}
func (r *request) toJSON(v interface{}) []byte {
b, err := json.Marshal(v)
if err != nil {
log.Println("Unable to convert interface to JSON:", err)
return []byte("")
}
return b
}