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error.go
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error.go
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// Copyright 2021 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
//
// 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 (
"errors"
)
// retriableError is a marker interface indicating that an error occurred in a different component occurred (e.g. during
// reconciliation of an extension resource, the extension controller sets status.lastError), but the error should not be
// treated as "severe" immediately. Instead, the wait func is supposed to continue retrying waiting for the health
// condition to be met and only treat the error as severe, if it persists.
type retriableError interface {
error
// Retriable distinguishes an retriableError from other errors.
Retriable()
}
// IsRetriable checks if any error in err's chain is marked as an retriableError.
func IsRetriable(err error) bool {
var r retriableError
return errors.As(err, &r)
}
// RetriableError marks a given error as retriable.
func RetriableError(err error) error {
return retriableErrorImpl{underlying: err}
}
var _ retriableError = retriableErrorImpl{}
type retriableErrorImpl struct {
underlying error
}
// Error return the error message of the underlying (wrapped) error.
func (r retriableErrorImpl) Error() string {
return r.underlying.Error()
}
// Retriable marks retriableErrorImpl as retriable.
func (r retriableErrorImpl) Retriable() {}
// Unwrap returns the underlying (wrapped) error.
func (r retriableErrorImpl) Unwrap() error {
return r.underlying
}