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Merge pull request #4835 from MichaelEischer/fix-list-cancel

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backend/retry: do not log final error if context was canceled
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Michael Eischer 2024-06-01 19:17:30 +02:00 committed by GitHub
commit 660679c2f6
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GPG key ID: B5690EEEBB952194
2 changed files with 25 additions and 6 deletions
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6
internal/backend/retry/backend_retry.go
View file

@ -43,7 +43,7 @@ func New(be backend.Backend, maxElapsedTime time.Duration, report func(string, e
// retryNotifyErrorWithSuccess is an extension of backoff.RetryNotify with notification of success after an error.
// success is NOT notified on the first run of operation (only after an error).
func retryNotifyErrorWithSuccess(operation backoff.Operation, b backoff.BackOff, notify backoff.Notify, success func(retries int)) error {
func retryNotifyErrorWithSuccess(operation backoff.Operation, b backoff.BackOffContext, notify backoff.Notify, success func(retries int)) error {
var operationWrapper backoff.Operation
if success == nil {
operationWrapper = operation
@ -61,8 +61,8 @@ func retryNotifyErrorWithSuccess(operation backoff.Operation, b backoff.BackOff,
}
err := backoff.RetryNotify(operationWrapper, b, notify)
if err != nil && notify != nil {
// log final error
if err != nil && notify != nil && b.Context().Err() == nil {
// log final error, unless the context was canceled
notify(err, -1)
}
return err

25
internal/backend/retry/backend_retry_test.go
View file

@ -460,7 +460,7 @@ func TestNotifyWithSuccessIsNotCalled(t *testing.T) {
t.Fatal("Success should not have been called")
}
err := retryNotifyErrorWithSuccess(operation, &backoff.ZeroBackOff{}, notify, success)
err := retryNotifyErrorWithSuccess(operation, backoff.WithContext(&backoff.ZeroBackOff{}, context.Background()), notify, success)
if err != nil {
t.Fatal("retry should not have returned an error")
}
@ -486,7 +486,7 @@ func TestNotifyWithSuccessIsCalled(t *testing.T) {
successCalled++
}
err := retryNotifyErrorWithSuccess(operation, &backoff.ZeroBackOff{}, notify, success)
err := retryNotifyErrorWithSuccess(operation, backoff.WithContext(&backoff.ZeroBackOff{}, context.Background()), notify, success)
if err != nil {
t.Fatal("retry should not have returned an error")
}
@ -515,12 +515,31 @@ func TestNotifyWithSuccessFinalError(t *testing.T) {
successCalled++
}
err := retryNotifyErrorWithSuccess(operation, backoff.WithMaxRetries(&backoff.ZeroBackOff{}, 5), notify, success)
err := retryNotifyErrorWithSuccess(operation, backoff.WithContext(backoff.WithMaxRetries(&backoff.ZeroBackOff{}, 5), context.Background()), notify, success)
test.Assert(t, err.Error() == "expected error in test", "wrong error message %v", err)
test.Equals(t, 6, notifyCalled, "notify should have been called 6 times")
test.Equals(t, 0, successCalled, "success should not have been called")
}
func TestNotifyWithCancelError(t *testing.T) {
operation := func() error {
return errors.New("expected error in test")
}
notify := func(error, time.Duration) {
t.Error("unexpected call to notify")
}
success := func(retries int) {
t.Error("unexpected call to success")
}
ctx, cancel := context.WithCancel(context.Background())
cancel()
err := retryNotifyErrorWithSuccess(operation, backoff.WithContext(&backoff.ZeroBackOff{}, ctx), notify, success)
test.Assert(t, err == context.Canceled, "wrong error message %v", err)
}
type testClock struct {
Time time.Time
}