sigs.k8s.io/cluster-api@v1.7.1/internal/controllers/topology/cluster/patches/variables/errors.go (about)

     1  /*
     2  Copyright 2022 The Kubernetes Authors.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package variables
    18  
    19  const notFoundReason = "variable not found"
    20  
    21  type errorWithReason interface {
    22  	Reason() string
    23  }
    24  
    25  // IsNotFoundError checks if the passed error is a notFoundError.
    26  func IsNotFoundError(err error) bool {
    27  	if e, ok := err.(errorWithReason); ok {
    28  		return e.Reason() == notFoundReason
    29  	}
    30  	return false
    31  }
    32  
    33  // notFoundError is used when a variable is not found.
    34  type notFoundError struct {
    35  	reason  string
    36  	message string
    37  }
    38  
    39  func (e notFoundError) Error() string {
    40  	return e.message
    41  }
    42  
    43  // Reason returns the notFoundReason.
    44  func (e notFoundError) Reason() string {
    45  	return e.reason
    46  }