/
httpclient.go
136 lines (112 loc) · 2.29 KB
/
httpclient.go
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package httpclient
import (
"bytes"
"context"
"crypto/tls"
"io"
"io/ioutil"
"net/http"
"time"
)
type PushRequest struct {
Method string
URL string
Body []byte
Header []HTTPOption
}
type PushResponse struct {
Status int
Header http.Header
Body []byte
}
type HTTPRetryConfig struct {
MaxRetryTimes int
RetryInterval time.Duration
}
type HTTPClient struct {
Client *http.Client
RetryConfig *HTTPRetryConfig
}
type HTTPOption func(r *http.Request)
// SetHeader
func SetHeader(key string, value string) HTTPOption {
return func(r *http.Request) {
r.Header.Set(key, value)
}
}
func NewHTTPClient() (*HTTPClient, error) {
tr := &http.Transport{
MaxIdleConns: 10,
IdleConnTimeout: 30 * time.Second,
DisableCompression: true,
TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
}
client := &http.Client{Transport: tr}
return &HTTPClient{
Client: client,
RetryConfig: &HTTPRetryConfig{
MaxRetryTimes: 4,
RetryInterval: 0},
}, nil
}
func (r *PushRequest) buildHTTPRequest() (*http.Request, error) {
var body io.Reader
if r.Body != nil {
body = bytes.NewBuffer(r.Body)
}
req, err := http.NewRequest(r.Method, r.URL, body)
if err != nil {
return nil, err
}
for _, opt := range r.Header {
opt(req)
}
return req, nil
}
func (c *HTTPClient) doHttpRequest(req *PushRequest) (*PushResponse, error) {
request, err := req.buildHTTPRequest()
if err != nil {
return nil, err
}
resp, err := c.Client.Do(request)
if err != nil {
return nil, err
}
body, err := ioutil.ReadAll(resp.Body)
defer resp.Body.Close()
if err != nil {
return nil, err
}
return &PushResponse{
Status: resp.StatusCode,
Header: resp.Header,
Body: body,
}, nil
}
func (c *HTTPClient) DoHttpRequest(ctx context.Context, req *PushRequest) (*PushResponse, error) {
var (
result *PushResponse
err error
)
for retryTimes := 0; retryTimes < c.RetryConfig.MaxRetryTimes; retryTimes++ {
result, err = c.doHttpRequest(req)
if err == nil {
break
}
if !c.pendingForRetry(ctx) {
break
}
}
return result, err
}
func (c *HTTPClient) pendingForRetry(ctx context.Context) bool {
if c.RetryConfig.RetryInterval > 0 {
select {
case <-ctx.Done():
return false
case <-time.After(c.RetryConfig.RetryInterval):
return true
}
}
return false
}