// UpdatePodWithRetries updates a pod with given applyUpdate function. Note that pod not found error is ignored.
// The returned bool value can be used to tell if the pod is actually updated.
func UpdatePodWithRetries(podClient unversionedcore.PodInterface, pod *api.Pod, applyUpdate updatePodFunc) (*api.Pod, bool, error) {
var err error
var podUpdated bool
oldPod := pod
if err = wait.Poll(10*time.Millisecond, 1*time.Minute, func() (bool, error) {
pod, err = podClient.Get(oldPod.Name)
if err != nil {
return false, err
}
// Apply the update, then attempt to push it to the apiserver.
// TODO: add precondition for update
applyUpdate(pod)
if pod, err = podClient.Update(pod); err == nil {
// Update successful.
return true, nil
}
// TODO: don't retry on perm-failed errors and handle them gracefully
// Update could have failed due to conflict error. Try again.
return false, nil
}); err == nil {
// When there's no error, we've updated this pod.
podUpdated = true
}
if err == wait.ErrWaitTimeout {
err = fmt.Errorf("timed out trying to update pod: %+v", oldPod)
}
if errors.IsNotFound(err) {
glog.V(4).Infof("%s %s/%s is not found, skip updating it.", oldPod.Kind, oldPod.Namespace, oldPod.Name)
err = nil
}
return pod, podUpdated, err
}
func updatePodWithRetries(podClient unversionedcore.PodInterface, pod *api.Pod, applyUpdate updatePodFunc) (*api.Pod, error) {
var err error
oldPod := pod
err = wait.Poll(10*time.Millisecond, 1*time.Minute, func() (bool, error) {
// Apply the update, then attempt to push it to the apiserver.
applyUpdate(pod)
if pod, err = podClient.Update(pod); err == nil {
return true, nil
}
if pod, err = podClient.Get(oldPod.Name); err != nil {
pod = oldPod
}
return false, nil
})
return pod, err
}
// UpdatePodWithRetries updates a pod with given applyUpdate function. Note that pod not found error is ignored.
// The returned bool value can be used to tell if the pod is actually updated.
func UpdatePodWithRetries(podClient unversionedcore.PodInterface, pod *api.Pod, applyUpdate updatePodFunc) (*api.Pod, bool, error) {
var err error
var podUpdated bool
oldPod := pod
if err = wait.Poll(10*time.Millisecond, 1*time.Minute, func() (bool, error) {
pod, err = podClient.Get(oldPod.Name)
if err != nil {
return false, err
}
// Apply the update, then attempt to push it to the apiserver.
if err = applyUpdate(pod); err != nil {
return false, err
}
if pod, err = podClient.Update(pod); err == nil {
// Update successful.
return true, nil
}
// TODO: don't retry on perm-failed errors and handle them gracefully
// Update could have failed due to conflict error. Try again.
return false, nil
}); err == nil {
// When there's no error, we've updated this pod.
podUpdated = true
}
// Handle returned error from wait poll
if err == wait.ErrWaitTimeout {
err = fmt.Errorf("timed out trying to update pod: %+v", oldPod)
}
// Ignore the pod not found error, but the pod isn't updated.
if errors.IsNotFound(err) {
glog.V(4).Infof("%s %s/%s is not found, skip updating it.", oldPod.Kind, oldPod.Namespace, oldPod.Name)
err = nil
}
// Ignore the precondition violated error, but the pod isn't updated.
if err == errorsutil.ErrPreconditionViolated {
glog.V(4).Infof("%s %s/%s precondition doesn't hold, skip updating it.", oldPod.Kind, oldPod.Namespace, oldPod.Name)
err = nil
}
// If the error is non-nil the returned pod cannot be trusted; if podUpdated is false, the pod isn't updated;
// if the error is nil and podUpdated is true, the returned pod contains the applied update.
return pod, podUpdated, err
}
func updatePodWithRetries(podClient unversionedcore.PodInterface, pod *api.Pod, applyUpdate updatePodFunc) (*api.Pod, error) {
var err error
oldPod := pod
err = wait.Poll(10*time.Millisecond, 1*time.Minute, func() (bool, error) {
pod, err = podClient.Get(oldPod.Name)
if err != nil {
return false, err
}
// Apply the update, then attempt to push it to the apiserver.
applyUpdate(pod)
if pod, err = podClient.Update(pod); err == nil {
// Update successful.
return true, nil
}
// Update could have failed due to conflict error. Try again.
return false, nil
})
if err == wait.ErrWaitTimeout {
return nil, fmt.Errorf("timed out trying to update pod: %+v", oldPod)
}
return pod, err
}
