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decort-golang-sdk/internal/client/transport.go

68 lines
1.7 KiB

package client
import (
"fmt"
"io"
"net/http"
"strings"
"time"
)
type transport struct {
base http.RoundTripper
retries uint64
clientID string
clientSecret string
token string
SSOURL string
expiryTime time.Time
}
func (t *transport) RoundTrip(req *http.Request) (*http.Response, error) {
if t.token == "" || time.Now().After(t.expiryTime) {
body := fmt.Sprintf("grant_type=client_credentials&client_id=%s&client_secret=%s&response_type=id_token", t.clientID, t.clientSecret)
bodyReader := strings.NewReader(body)
req, _ := http.NewRequestWithContext(req.Context(), "POST", t.SSOURL+"/v1/oauth/access_token", bodyReader)
req.Header.Add("Content-Type", "application/x-www-form-urlencoded")
resp, err := t.base.RoundTrip(req)
if err != nil {
return nil, fmt.Errorf("cannot get token: %w", err)
}
tokenBytes, _ := io.ReadAll(resp.Body)
resp.Body.Close()
if resp.StatusCode != 200 {
return nil, fmt.Errorf("cannot get token: %s", tokenBytes)
}
token := string(tokenBytes)
t.token = token
t.expiryTime = time.Now().AddDate(0, 0, 1)
}
req.Header.Add("Content-Type", "application/x-www-form-urlencoded")
req.Header.Add("Authorization", "bearer "+t.token)
req.Header.Set("Accept", "application/json")
var resp *http.Response
var err error
for i := uint64(0); i < t.retries; i++ {
resp, err = t.base.RoundTrip(req)
if err == nil {
if resp.StatusCode == 200 {
return resp, nil
}
respBytes, _ := io.ReadAll(resp.Body)
err = fmt.Errorf("%s", respBytes)
resp.Body.Close()
}
//logrus.Errorf("Could not execute request: %v. Retrying %d/%d", err, i+1, t.retries)
time.Sleep(time.Second * 5)
}
return nil, fmt.Errorf("could not execute request: %w", err)
}