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http.go
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http.go
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package util
import (
"context"
"fmt"
"io"
"io/ioutil"
"net/http"
)
type HttpService struct {
}
type HttpMethod string
const (
GET HttpMethod = "GET"
POST HttpMethod = "POST"
PUT HttpMethod = "PUT"
DELETE HttpMethod = "DELETE"
)
func (s *HttpService) Request(ctx context.Context, method HttpMethod, url string, requestParams map[string]string, headers map[string]string, body io.Reader) (*http.Request, error) {
req, err := http.NewRequest(string(method), url, body)
if err != nil {
return nil, fmt.Errorf("Error building request to \"%s\":\n %w", url, err)
}
req = req.WithContext(ctx)
if headers != nil {
for k, v := range headers {
req.Header.Set(k, v)
}
}
if requestParams != nil {
q := req.URL.Query()
for k, v := range requestParams {
q.Add(k, v)
}
req.URL.RawQuery = q.Encode()
}
return req, nil
}
func (s *HttpService) Execute(ctx context.Context, req *http.Request) (*http.Response, error) {
req = req.WithContext(ctx)
client := &http.Client{}
resp, err := client.Do(req)
if err != nil {
return resp, fmt.Errorf("Error sending %s request to \"%s\":\n %w", req.Method, req.URL, err)
}
return resp, err
}
func (s *HttpService) ParseResponseBody(body io.ReadCloser) ([]byte, error) {
defer body.Close()
f, err := ioutil.ReadAll(body)
if err != nil {
return nil, fmt.Errorf("Error reading HTTP response:\n %w", err)
}
return f, nil
}