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Always retry network connection error in webhook 

Signed-off-by: Mik Vyatskov <vmik@google.com>
pull/6/head
Mik Vyatskov 2017-10-15 16:52:15 +02:00
parent 4ad4e1ec40
commit 59bacba056
2 changed files with 4 additions and 5 deletions
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1
staging/src/k8s.io/apiserver/pkg/util/webhook/BUILD
View File

@ -15,6 +15,7 @@ go_library(
"//vendor/k8s.io/apimachinery/pkg/runtime:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/runtime/schema:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/runtime/serializer:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/util/net:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/util/wait:go_default_library",
"//vendor/k8s.io/client-go/rest:go_default_library",
"//vendor/k8s.io/client-go/tools/clientcmd:go_default_library",

8
staging/src/k8s.io/apiserver/pkg/util/webhook/webhook.go
View File

@ -27,6 +27,7 @@ import (
"k8s.io/apimachinery/pkg/runtime/schema"
"k8s.io/apimachinery/pkg/runtime/serializer"
runtimeserializer "k8s.io/apimachinery/pkg/runtime/serializer"
"k8s.io/apimachinery/pkg/util/net"
"k8s.io/apimachinery/pkg/util/wait"
"k8s.io/client-go/rest"
"k8s.io/client-go/tools/clientcmd"
@ -104,17 +105,14 @@ func WithExponentialBackoff(initialBackoff time.Duration, webhookFn func() error
var err error
wait.ExponentialBackoff(backoff, func() (bool, error) {
err = webhookFn()
// these errors indicate a need to retry an authentication check
if apierrors.IsServerTimeout(err) || apierrors.IsTimeout(err) || apierrors.IsTooManyRequests(err) {
// these errors indicate a transient error that should be retried.
if net.IsConnectionReset(err) || apierrors.IsInternalError(err) || apierrors.IsTimeout(err) || apierrors.IsTooManyRequests(err) {
return false, nil
}
// if the error sends the Retry-After header, we respect it as an explicit confirmation we should retry.
if _, shouldRetry := apierrors.SuggestsClientDelay(err); shouldRetry {
return false, nil
}
if apierrors.IsInternalError(err) {
return false, nil
}
if err != nil {
return false, err
}