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errors.go
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errors.go
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package errorsx
import "github.com/pkg/errors"
// Cause returns the underlying cause of the error, if possible.
// An error value has a cause if it implements the following
// interface:
//
// type causer interface {
// Cause() error
// }
//
// If the error does not implement Cause, the original error will
// be returned. If the error is nil, nil will be returned without further
// investigation.
func Cause(err error) error {
type causer interface {
Cause() error
}
for err != nil {
cause, ok := err.(causer)
if !ok || cause.Cause() == nil {
break
}
err = cause.Cause()
}
return err
}
// WithStack mirror pkg/errors.WithStack but does not wrap existing stack
// traces.
func WithStack(err error) error {
if e, ok := err.(StackTracer); ok && len(e.StackTrace()) > 0 {
return err
}
return errors.WithStack(err)
}
// StatusCodeCarrier can be implemented by an error to support setting status codes in the error itself.
type StatusCodeCarrier interface {
// StatusCode returns the status code of this error.
StatusCode() int
}
// RequestIDCarrier can be implemented by an error to support error contexts.
type RequestIDCarrier interface {
// RequestID returns the ID of the request that caused the error, if applicable.
RequestID() string
}
// ReasonCarrier can be implemented by an error to support error contexts.
type ReasonCarrier interface {
// Reason returns the reason for the error, if applicable.
Reason() string
}
// DebugCarrier can be implemented by an error to support error contexts.
type DebugCarrier interface {
// Debug returns debugging information for the error, if applicable.
Debug() string
}
// StatusCarrier can be implemented by an error to support error contexts.
type StatusCarrier interface {
// ID returns the error id, if applicable.
Status() string
}
// DetailsCarrier can be implemented by an error to support error contexts.
type DetailsCarrier interface {
// Details returns details on the error, if applicable.
Details() map[string]interface{}
}
// IDCarrier can be implemented by an error to support error contexts.
type IDCarrier interface {
// ID returns application error ID on the error, if applicable.
ID() string
}
type StackTracer interface {
StackTrace() errors.StackTrace
}