Documentation
¶
Index ¶
- Variables
- func GetGroupNames() []string
- func ServeJSON(w http.ResponseWriter, err error) error
- type Error
- type ErrorCode
- func (ec ErrorCode) Descriptor() ErrorDescriptor
- func (ec ErrorCode) Error() string
- func (ec ErrorCode) ErrorCode() ErrorCode
- func (ec ErrorCode) MarshalText() (text []byte, err error)
- func (ec ErrorCode) Message() string
- func (ec ErrorCode) String() string
- func (ec *ErrorCode) UnmarshalText(text []byte) error
- func (ec ErrorCode) WithArgs(args ...interface{}) Error
- func (ec ErrorCode) WithDetail(detail interface{}) Error
- func (ec ErrorCode) WithMessage(message string) Error
- type ErrorCoder
- type ErrorDescriptor
- type Errors
Constants ¶
This section is empty.
Variables ¶
var ( // ErrorCodeUnknown is a generic error that can be used as a last // resort if there is no situation-specific error message that can be used ErrorCodeUnknown = Register("errcode", ErrorDescriptor{ Value: "UNKNOWN", Message: "unknown error", Description: `Generic error returned when the error does not have an API classification.`, HTTPStatusCode: http.StatusInternalServerError, }) // ErrorCodeUnsupported is returned when an operation is not supported. ErrorCodeUnsupported = Register("errcode", ErrorDescriptor{ Value: "UNSUPPORTED", Message: "The operation is unsupported.", Description: `The operation was unsupported due to a missing implementation or invalid set of parameters.`, HTTPStatusCode: http.StatusMethodNotAllowed, }) // authentication. ErrorCodeUnauthorized = Register("errcode", ErrorDescriptor{ Value: "UNAUTHORIZED", Message: "authentication required", Description: `The access controller was unable to authenticate the client. Often this will be accompanied by a Www-Authenticate HTTP response header indicating how to authenticate.`, HTTPStatusCode: http.StatusUnauthorized, }) // ErrorCodeDenied is returned if a client does not have sufficient // permission to perform an action. ErrorCodeDenied = Register("errcode", ErrorDescriptor{ Value: "DENIED", Message: "requested access to the resource is denied", Description: `The access controller denied access for the operation on a resource.`, HTTPStatusCode: http.StatusForbidden, }) // of a service or endpoint. ErrorCodeUnavailable = Register("errcode", ErrorDescriptor{ Value: "UNAVAILABLE", Message: "service unavailable", Description: "Returned when a service is not available", HTTPStatusCode: http.StatusServiceUnavailable, }) // ErrorCodeTooManyRequests is returned if a client attempts too many // times to contact a service endpoint. ErrorCodeTooManyRequests = Register("errcode", ErrorDescriptor{ Value: "TOOMANYREQUESTS", Message: "too many requests", Description: `Returned when a client attempts to contact a service too many times`, HTTPStatusCode: http.StatusTooManyRequests, }) )
Functions ¶
func GetGroupNames ¶
func GetGroupNames() []string
GetGroupNames returns the list of Error group names that are registered
Types ¶
type Error ¶
type Error struct {
Code ErrorCode `json:"code"`
Message string `json:"message"`
Detail interface{} `json:"detail,omitempty"`
}
Error provides a wrapper around ErrorCode with extra Details provided.
func (Error) WithArgs ¶
WithArgs uses the passed-in list of interface{} as the substitution variables in the Error's Message string, but returns a new Error
func (Error) WithDetail ¶
WithDetail will return a new Error, based on the current one, but with some Detail info added
type ErrorCode ¶
type ErrorCode int
ErrorCode represents the error type. The errors are serialized via strings and the integer format may change and should *never* be exported.
func ParseErrorCode ¶
ParseErrorCode returns the value by the string error code. `ErrorCodeUnknown` will be returned if the error is not known.
func Register ¶
func Register(group string, descriptor ErrorDescriptor) ErrorCode
Register will make the passed-in error known to the environment and return a new ErrorCode
func (ErrorCode) Descriptor ¶
func (ec ErrorCode) Descriptor() ErrorDescriptor
Descriptor returns the descriptor for the error code.
func (ErrorCode) MarshalText ¶
MarshalText encodes the receiver into UTF-8-encoded text and returns the result.
func (*ErrorCode) UnmarshalText ¶
UnmarshalText decodes the form generated by MarshalText.
func (ErrorCode) WithDetail ¶
WithDetail creates a new Error struct based on the passed-in info and set the Detail property appropriately
func (ErrorCode) WithMessage ¶
WithMessage creates a new Error struct based on the passed-in info and overrides the Message property.
type ErrorCoder ¶
type ErrorCoder interface {
ErrorCode() ErrorCode
}
ErrorCoder is the base interface for ErrorCode and Error allowing users of each to just call ErrorCode to get the real ID of each
type ErrorDescriptor ¶
type ErrorDescriptor struct {
// Code is the error code that this descriptor describes.
Code ErrorCode
// Value provides a unique, string key, often captilized with
// underscores, to identify the error code. This value is used as the
// keyed value when serializing api errors.
Value string
// Message is a short, human readable decription of the error condition
// included in API responses.
Message string
// Description provides a complete account of the errors purpose, suitable
// for use in documentation.
Description string
// HTTPStatusCode provides the http status code that is associated with
// this error condition.
HTTPStatusCode int
}
ErrorDescriptor provides relevant information about a given error code.
func GetErrorAllDescriptors ¶
func GetErrorAllDescriptors() []ErrorDescriptor
GetErrorAllDescriptors returns a slice of all ErrorDescriptors that are registered, irrespective of what group they're in
func GetErrorCodeGroup ¶
func GetErrorCodeGroup(name string) []ErrorDescriptor
GetErrorCodeGroup returns the named group of error descriptors
type Errors ¶
type Errors []error
Errors provides the envelope for multiple errors and a few sugar methods for use within the application.
func (Errors) MarshalJSON ¶
MarshalJSON converts slice of error, ErrorCode or Error into a slice of Error - then serializes
func (*Errors) UnmarshalJSON ¶
UnmarshalJSON deserializes []Error and then converts it into slice of Error or ErrorCode
Source Files