mirror of
https://github.com/kubernetes/client-go.git
synced 2026-07-28 01:32:07 +00:00
7a574b0397
OnError replaced context cancellation errors with a nil lastErr when the error was non-retriable. Preserve the callback error when no retriable error was recorded. Add a regression test covering a context cancellation returned on the first invocation. Kubernetes-commit: 23b344cd1581a871984e44be951249af6018242e
83 lines
2.0 KiB
Go
83 lines
2.0 KiB
Go
/*
|
|
Copyright 2016 The Kubernetes Authors.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package retry
|
|
|
|
import (
|
|
"context"
|
|
stderrors "errors"
|
|
"fmt"
|
|
"testing"
|
|
|
|
"k8s.io/apimachinery/pkg/api/errors"
|
|
"k8s.io/apimachinery/pkg/runtime/schema"
|
|
"k8s.io/apimachinery/pkg/util/wait"
|
|
)
|
|
|
|
func TestRetryOnConflict(t *testing.T) {
|
|
opts := wait.Backoff{Factor: 1.0, Steps: 3}
|
|
conflictErr := errors.NewConflict(schema.GroupResource{Resource: "test"}, "other", nil)
|
|
|
|
// never returns
|
|
err := RetryOnConflict(opts, func() error {
|
|
return conflictErr
|
|
})
|
|
if err != conflictErr {
|
|
t.Errorf("unexpected error: %v", err)
|
|
}
|
|
|
|
// returns immediately
|
|
i := 0
|
|
err = RetryOnConflict(opts, func() error {
|
|
i++
|
|
return nil
|
|
})
|
|
if err != nil || i != 1 {
|
|
t.Errorf("unexpected error: %v", err)
|
|
}
|
|
|
|
// returns immediately on error
|
|
testErr := fmt.Errorf("some other error")
|
|
err = RetryOnConflict(opts, func() error {
|
|
return testErr
|
|
})
|
|
if err != testErr {
|
|
t.Errorf("unexpected error: %v", err)
|
|
}
|
|
|
|
// keeps retrying
|
|
i = 0
|
|
err = RetryOnConflict(opts, func() error {
|
|
if i < 2 {
|
|
i++
|
|
return errors.NewConflict(schema.GroupResource{Resource: "test"}, "other", nil)
|
|
}
|
|
return nil
|
|
})
|
|
if err != nil || i != 2 {
|
|
t.Errorf("unexpected error: %v", err)
|
|
}
|
|
}
|
|
|
|
func TestRetryOnConflictPreservesContextErrorWithoutLastError(t *testing.T) {
|
|
err := RetryOnConflict(DefaultBackoff, func() error {
|
|
return context.Canceled
|
|
})
|
|
if !stderrors.Is(err, context.Canceled) {
|
|
t.Fatalf("expected context.Canceled, got %v", err)
|
|
}
|
|
}
|