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Merge pull request #80402 from mjudeikis/generic.retry

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make client-go/util/retry more generic
This commit is contained in:
Kubernetes Prow Robot 2019-07-22 10:52:53 -07:00 committed by GitHub
commit 0d2b85878d
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1 changed files with 10 additions and 5 deletions
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15
staging/src/k8s.io/client-go/util/retry/util.go
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@ -42,12 +42,12 @@ var DefaultBackoff = wait.Backoff{
Jitter: 0.1,
}
// RetryConflict executes the provided function repeatedly, retrying if the server returns a conflicting
// write. Callers should preserve previous executions if they wish to retry changes. It performs an
// OnError executes the provided function repeatedly, retrying if the server returns a specified
// error. Callers should preserve previous executions if they wish to retry changes. It performs an
// exponential backoff.
//
// var pod *api.Pod
// err := RetryOnConflict(DefaultBackoff, func() (err error) {
// err := retry.OnError(DefaultBackoff, errors.IsConflict, func() (err error) {
// pod, err = c.Pods("mynamespace").UpdateStatus(podStatus)
// return
// })
@ -58,14 +58,14 @@ var DefaultBackoff = wait.Backoff{
// ...
//
// TODO: Make Backoff an interface?
func RetryOnConflict(backoff wait.Backoff, fn func() error) error {
func OnError(backoff wait.Backoff, errorFunc func(error) bool, fn func() error) error {
var lastConflictErr error
err := wait.ExponentialBackoff(backoff, func() (bool, error) {
err := fn()
switch {
case err == nil:
return true, nil
case errors.IsConflict(err):
case errorFunc(err):
lastConflictErr = err
return false, nil
default:
@ -77,3 +77,8 @@ func RetryOnConflict(backoff wait.Backoff, fn func() error) error {
}
return err
}
// RetryOnConflict executes the function function repeatedly, retrying if the server returns a conflicting
func RetryOnConflict(backoff wait.Backoff, fn func() error) error {
return OnError(backoff, errors.IsConflict, fn)
}