/
errs.go
81 lines (62 loc) · 1.86 KB
/
errs.go
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package errs
import (
"database/sql"
"errors"
"fmt"
)
type TodoError struct {
ErrorCode ErrorCode `json:"code"`
Message string `json:"message"`
HttpCode int `json:"http_code"`
}
type ErrorCode byte
func (e ErrorCode) Error() string {
return fmt.Sprintf("%d", e)
}
const (
// UndefinedErr is used to signify an unknown/uninitialized status
UndefinedErr ErrorCode = iota
AuthErr
ConfigErr
DBErr
InvalidUserErr
NotFoundErr
InputError
InternalErr
)
func (e TodoError) Error() string {
return e.Message
}
func (e TodoError) Code() string {
return fmt.Sprintf("%d", e.ErrorCode)
}
func (e TodoError) Public() bool {
return e.ErrorCode != DBErr && e.ErrorCode != InternalErr
}
func (e TodoError) Body() string {
return e.Message
}
// ErrUnauthorized is a canned error for lack of authorization (http 401)
var ErrUnauthorized = TodoError{AuthErr, "invalid authorization", 401}
// ErrNotFound is a canned error for not found (http 404)
var ErrNotFound = TodoError{NotFoundErr, "not found", 404}
// ErrInvalidUser is a canned error for invalid user ID
var ErrInvalidUser = TodoError{InvalidUserErr, "invalid user", 404}
// ErrDB is a canned error for unexpected DB Errors
var ErrDB = TodoError{DBErr, "internal error", 500}
// ErrInternal is a canned error for unexpected service Errors
var ErrInternal = TodoError{InternalErr, "internal error", 500}
// ErrInvalidRequest is a canned error for invalid user ID
var ErrInvalidRequest = TodoError{InputError, "invalid request", 400}
func New(c ErrorCode, msg string, h int) error {
return TodoError{c, msg, h}
}
func IsNotNoRows(err error) bool {
return err != nil && !errors.Is(err, sql.ErrNoRows)
}
func IsNotFound(err error) bool {
return err != nil && (errors.Is(err, ErrNotFound) || errors.Is(err, sql.ErrNoRows))
}
func IsUnauthorized(err error) bool {
return err != nil && errors.Is(err, ErrUnauthorized)
}