sigs.k8s.io/cluster-api-provider-aws@v1.5.5/pkg/cloud/services/elb/errors.go (about)

     1  /*
     2  Copyright 2018 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 elb
    18  
    19  import (
    20  	"net/http"
    21  
    22  	"github.com/aws/aws-sdk-go/aws/awserr"
    23  	"github.com/aws/aws-sdk-go/service/elb"
    24  	"github.com/pkg/errors"
    25  
    26  	"sigs.k8s.io/cluster-api-provider-aws/pkg/cloud/awserrors"
    27  )
    28  
    29  var _ error = &ELBError{}
    30  
    31  // ELBError is an error exposed to users of this library.
    32  type ELBError struct {
    33  	msg string
    34  
    35  	Code int
    36  }
    37  
    38  // Error implements the Error interface.
    39  func (e *ELBError) Error() string {
    40  	return e.msg
    41  }
    42  
    43  // NewNotFound returns an error which indicates that the resource of the kind and the name was not found.
    44  func NewNotFound(msg string) error {
    45  	return &ELBError{
    46  		msg:  msg,
    47  		Code: http.StatusNotFound,
    48  	}
    49  }
    50  
    51  // NewConflict returns an error which indicates that the request cannot be processed due to a conflict.
    52  func NewConflict(msg string) error {
    53  	return &ELBError{
    54  		msg:  msg,
    55  		Code: http.StatusConflict,
    56  	}
    57  }
    58  
    59  // IsNotFound returns true if the error was created by NewNotFound.
    60  func IsNotFound(err error) bool {
    61  	if ReasonForError(err) == http.StatusNotFound {
    62  		return true
    63  	}
    64  	if code, ok := awserrors.Code(errors.Cause(err)); ok {
    65  		if code == elb.ErrCodeAccessPointNotFoundException {
    66  			return true
    67  		}
    68  	}
    69  	return false
    70  }
    71  
    72  // IsAccessDenied returns true if the error is AccessDenied.
    73  func IsAccessDenied(err error) bool {
    74  	if code, ok := awserrors.Code(errors.Cause(err)); ok {
    75  		if code == "AccessDenied" {
    76  			return true
    77  		}
    78  	}
    79  	return false
    80  }
    81  
    82  // IsConflict returns true if the error was created by NewConflict.
    83  func IsConflict(err error) bool {
    84  	return ReasonForError(err) == http.StatusConflict
    85  }
    86  
    87  // IsSDKError returns true if the error is of type awserr.Error.
    88  func IsSDKError(err error) (ok bool) {
    89  	_, ok = errors.Cause(err).(awserr.Error)
    90  	return
    91  }
    92  
    93  // ReasonForError returns the HTTP status for a particular error.
    94  func ReasonForError(err error) int {
    95  	if t, ok := errors.Cause(err).(*ELBError); ok {
    96  		return t.Code
    97  	}
    98  	return -1
    99  }