42 lines
719 B
Go
42 lines
719 B
Go
package cache
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import (
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"bytes"
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"fmt"
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"io"
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"net/http"
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)
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type retry struct {
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transport http.RoundTripper
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retry int
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}
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func (t *retry) RoundTrip(req *http.Request) (*http.Response, error) {
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var body []byte
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if req.Body != nil {
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body, _ = io.ReadAll(req.Body)
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}
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for count := 0; count < t.retry; count++ {
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req.Body = io.NopCloser(bytes.NewBuffer(body))
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res, err := t.transport.RoundTrip(req)
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if err != nil {
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return nil, err
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}
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if t.check(res) {
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if res.Body != nil {
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io.Copy(io.Discard, res.Body)
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res.Body.Close()
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}
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continue
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}
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return res, err
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}
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return nil, fmt.Errorf("too many retries")
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}
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func (t *retry) check(res *http.Response) bool {
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return res.StatusCode > 399
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}
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