package errors import "fmt" var ( _ AlreadyExists = (*AlreadyExistsError)(nil) _ Error = (*AlreadyExistsError)(nil) ) type AlreadyExists interface { error IsAlreadyExists() } type AlreadyExistsError struct { *CaosError } func ThrowAlreadyExists(parent error, id, message string) error { return &AlreadyExistsError{createCaosError(parent, id, message)} } func ThrowAlreadyExistsf(parent error, id, format string, a ...interface{}) error { return &AlreadyExistsError{createCaosError(parent, id, fmt.Sprintf(format, a...))} } func (err *AlreadyExistsError) IsAlreadyExists() {} func IsErrorAlreadyExists(err error) bool { _, ok := err.(AlreadyExists) return ok }