mirror of https://github.com/knative/caching.git
67 lines
2.0 KiB
Go
67 lines
2.0 KiB
Go
/*
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Copyright 2020 The Knative Authors
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Licensed under the Apache License, Veroute.on 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package reconciler
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import (
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"strings"
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apierrs "k8s.io/apimachinery/pkg/api/errors"
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"k8s.io/client-go/util/retry"
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)
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// RetryUpdateConflicts retries the inner function if it returns conflict errors.
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// This can be used to retry status updates without constantly reenqueuing keys.
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func RetryUpdateConflicts(updater func(int) error) error {
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return RetryErrors(updater, apierrs.IsConflict)
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}
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// RetryErrors retries the inner function if it returns matching errors.
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func RetryErrors(updater func(int) error, fns ...func(error) bool) error {
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attempts := 0
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return retry.OnError(retry.DefaultRetry, func(err error) bool {
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for _, fn := range fns {
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if fn(err) {
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return true
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}
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}
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return false
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}, func() error {
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err := updater(attempts)
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attempts++
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return err
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})
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}
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// RetryTestErrors retries the inner function if it hits an error type that is
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// common in our test environments.
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func RetryTestErrors(updater func(int) error) error {
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return RetryErrors(updater,
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// Example: conflicts updating `gke-resource-quotas` (implicit on Service/Pod/Ingress creations)
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apierrs.IsConflict,
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// Example: https://github.com/knative/test-infra/issues/2346#issuecomment-687220045
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func(err error) bool {
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return strings.Contains(err.Error(), "gke-resource-quotas")
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},
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// Example: `etcdserver: request timed out`
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// TODO(mattmoor): Does apierrs.IsServerTimeout catch the above?
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func(err error) bool {
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return strings.Contains(err.Error(), "etcdserver")
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},
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)
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}
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