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Reset input buffer on retry

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Retries were previously sending empty bodies to the server.
This commit is contained in:
Clayton Coleman 2016-05-14 14:06:57 -04:00
parent a8ce27709c
commit eeb04e6826
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GPG Key ID: 3D16906B4F1C5CB3
2 changed files with 19 additions and 3 deletions
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15
pkg/client/restclient/request.go
View File

@ -539,10 +539,10 @@ func (r *Request) Body(obj interface{}) *Request {
return r
}
glog.V(8).Infof("Request Body: %s", string(data))
r.body = bytes.NewBuffer(data)
r.body = bytes.NewReader(data)
case []byte:
glog.V(8).Infof("Request Body: %s", string(t))
r.body = bytes.NewBuffer(t)
r.body = bytes.NewReader(t)
case io.Reader:
r.body = t
case runtime.Object:
@ -556,7 +556,7 @@ func (r *Request) Body(obj interface{}) *Request {
return r
}
glog.V(8).Infof("Request Body: %s", string(data))
r.body = bytes.NewBuffer(data)
r.body = bytes.NewReader(data)
r.SetHeader("Content-Type", r.content.ContentType)
default:
r.err = fmt.Errorf("unknown type used for body: %+v", obj)
@ -823,6 +823,15 @@ func (r *Request) request(fn func(*http.Request, *http.Response)) error {
retries++
if seconds, wait := checkWait(resp); wait && retries < maxRetries {
if seeker, ok := r.body.(io.Seeker); ok && r.body != nil {
_, err := seeker.Seek(0, 0)
if err != nil {
glog.V(4).Infof("Could not retry request, can't Seek() back to beginning of body for %T", r.body)
fn(req, resp)
return true
}
}
glog.V(4).Infof("Got a Retry-After %s response for attempt %d to %v", seconds, retries, url)
r.backoffMgr.Sleep(time.Duration(seconds) * time.Second)
return false

7
pkg/client/restclient/request_test.go
View File

@ -874,6 +874,13 @@ func TestCheckRetryHandles429And5xx(t *testing.T) {
count := 0
ch := make(chan struct{})
testServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
data, err := ioutil.ReadAll(req.Body)
if err != nil {
t.Fatalf("unable to read request body: %v", err)
}
if !bytes.Equal(data, []byte(strings.Repeat("abcd", 1000))) {
t.Fatalf("retry did not send a complete body: %s", data)
}
t.Logf("attempt %d", count)
if count >= 4 {
w.WriteHeader(http.StatusOK)