errors

Documentation

Index

• Variables
• func E(args ...interface{}) error
• func Errorf(format string, args ...interface{}) error
• func Is(kind Kind, err error) bool
• type Error
  • func (e *Error) Error() string
• type Kind
  • func (k Kind) String() string
• type Operation

Variables

var (
	// Separator is used to separate nested errors.
	Separator = ":\n\t"
)

Functions

func E

func E(args ...interface{}) error

E creates an error

func Errorf

func Errorf(format string, args ...interface{}) error

Errorf creates an error from a given format string.

func Is

func Is(kind Kind, err error) bool

Is checks if the error of a given kind.

Types

type Error

type Error struct {
	// Op is the performed operation, usually it is the method name.
	// e.g. Bus.Publish()
	Op Operation
	// Kind of the error such as subscriber not found
	// or "Other" if its class is unknown or irrelevant.
	Kind Kind
	// Err is the underlying error that has triggered this one, if any.
	Err error
}

Error is the implementation of the error interface.

func (*Error) Error

func (e *Error) Error() string

type Kind

type Kind uint8

Kind is the error classification.

const (
	// Other is a fallback classification of the error.
	Other Kind = iota
	// Invalid input is not allowed.
	Invalid
	// NotFound item is not found.
	NotFound
	// MinLength should be 1 or more.
	MinLength
	// Failure to apply an operation.
	Failure
	// Panic recovery errors.
	Panic
)

func (Kind) String

func (k Kind) String() string

type Operation

type Operation string

Operation that was performed to produce this error.