mirror of https://github.com/helm/helm
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
81 lines
2.0 KiB
81 lines
2.0 KiB
/*
|
|
Copyright The Helm Authors.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package cli
|
|
|
|
import (
|
|
"bytes"
|
|
"encoding/json"
|
|
"io"
|
|
"net/http"
|
|
"strings"
|
|
)
|
|
|
|
type retryingRoundTripper struct {
|
|
wrapped http.RoundTripper
|
|
}
|
|
|
|
func (rt *retryingRoundTripper) RoundTrip(req *http.Request) (*http.Response, error) {
|
|
return rt.roundTrip(req, 1, nil)
|
|
}
|
|
|
|
func (rt *retryingRoundTripper) roundTrip(req *http.Request, retry int, prevResp *http.Response) (*http.Response, error) {
|
|
if retry < 0 {
|
|
return prevResp, nil
|
|
}
|
|
resp, rtErr := rt.wrapped.RoundTrip(req)
|
|
if rtErr != nil {
|
|
return resp, rtErr
|
|
}
|
|
if resp.StatusCode < 500 {
|
|
return resp, rtErr
|
|
}
|
|
if resp.Header.Get("content-type") != "application/json" {
|
|
return resp, rtErr
|
|
}
|
|
b, err := io.ReadAll(resp.Body)
|
|
resp.Body.Close()
|
|
if err != nil {
|
|
return resp, rtErr
|
|
}
|
|
|
|
var ke kubernetesError
|
|
r := bytes.NewReader(b)
|
|
err = json.NewDecoder(r).Decode(&ke)
|
|
r.Seek(0, io.SeekStart)
|
|
resp.Body = io.NopCloser(r)
|
|
if err != nil {
|
|
return resp, rtErr
|
|
}
|
|
if ke.Code < 500 {
|
|
return resp, rtErr
|
|
}
|
|
// Matches messages like "etcdserver: leader changed"
|
|
if strings.HasSuffix(ke.Message, "etcdserver: leader changed") {
|
|
return rt.roundTrip(req, retry-1, resp)
|
|
}
|
|
// Matches messages like "rpc error: code = Unknown desc = raft proposal dropped"
|
|
if strings.HasSuffix(ke.Message, "raft proposal dropped") {
|
|
return rt.roundTrip(req, retry-1, resp)
|
|
}
|
|
return resp, rtErr
|
|
}
|
|
|
|
type kubernetesError struct {
|
|
Message string `json:"message"`
|
|
Code int `json:"code"`
|
|
}
|