github.com/pwn-term/docker@v0.0.0-20210616085119-6e977cce2565/moby/errdefs/is.go (about)

     1  package errdefs // import "github.com/docker/docker/errdefs"
     2  
     3  type causer interface {
     4  	Cause() error
     5  }
     6  
     7  func getImplementer(err error) error {
     8  	switch e := err.(type) {
     9  	case
    10  		ErrNotFound,
    11  		ErrInvalidParameter,
    12  		ErrConflict,
    13  		ErrUnauthorized,
    14  		ErrUnavailable,
    15  		ErrForbidden,
    16  		ErrSystem,
    17  		ErrNotModified,
    18  		ErrNotImplemented,
    19  		ErrCancelled,
    20  		ErrDeadline,
    21  		ErrDataLoss,
    22  		ErrUnknown:
    23  		return err
    24  	case causer:
    25  		return getImplementer(e.Cause())
    26  	default:
    27  		return err
    28  	}
    29  }
    30  
    31  // IsNotFound returns if the passed in error is an ErrNotFound
    32  func IsNotFound(err error) bool {
    33  	_, ok := getImplementer(err).(ErrNotFound)
    34  	return ok
    35  }
    36  
    37  // IsInvalidParameter returns if the passed in error is an ErrInvalidParameter
    38  func IsInvalidParameter(err error) bool {
    39  	_, ok := getImplementer(err).(ErrInvalidParameter)
    40  	return ok
    41  }
    42  
    43  // IsConflict returns if the passed in error is an ErrConflict
    44  func IsConflict(err error) bool {
    45  	_, ok := getImplementer(err).(ErrConflict)
    46  	return ok
    47  }
    48  
    49  // IsUnauthorized returns if the passed in error is an ErrUnauthorized
    50  func IsUnauthorized(err error) bool {
    51  	_, ok := getImplementer(err).(ErrUnauthorized)
    52  	return ok
    53  }
    54  
    55  // IsUnavailable returns if the passed in error is an ErrUnavailable
    56  func IsUnavailable(err error) bool {
    57  	_, ok := getImplementer(err).(ErrUnavailable)
    58  	return ok
    59  }
    60  
    61  // IsForbidden returns if the passed in error is an ErrForbidden
    62  func IsForbidden(err error) bool {
    63  	_, ok := getImplementer(err).(ErrForbidden)
    64  	return ok
    65  }
    66  
    67  // IsSystem returns if the passed in error is an ErrSystem
    68  func IsSystem(err error) bool {
    69  	_, ok := getImplementer(err).(ErrSystem)
    70  	return ok
    71  }
    72  
    73  // IsNotModified returns if the passed in error is a NotModified error
    74  func IsNotModified(err error) bool {
    75  	_, ok := getImplementer(err).(ErrNotModified)
    76  	return ok
    77  }
    78  
    79  // IsNotImplemented returns if the passed in error is an ErrNotImplemented
    80  func IsNotImplemented(err error) bool {
    81  	_, ok := getImplementer(err).(ErrNotImplemented)
    82  	return ok
    83  }
    84  
    85  // IsUnknown returns if the passed in error is an ErrUnknown
    86  func IsUnknown(err error) bool {
    87  	_, ok := getImplementer(err).(ErrUnknown)
    88  	return ok
    89  }
    90  
    91  // IsCancelled returns if the passed in error is an ErrCancelled
    92  func IsCancelled(err error) bool {
    93  	_, ok := getImplementer(err).(ErrCancelled)
    94  	return ok
    95  }
    96  
    97  // IsDeadline returns if the passed in error is an ErrDeadline
    98  func IsDeadline(err error) bool {
    99  	_, ok := getImplementer(err).(ErrDeadline)
   100  	return ok
   101  }
   102  
   103  // IsDataLoss returns if the passed in error is an ErrDataLoss
   104  func IsDataLoss(err error) bool {
   105  	_, ok := getImplementer(err).(ErrDataLoss)
   106  	return ok
   107  }