133 lines
3.4 KiB
Go
133 lines
3.4 KiB
Go
/*
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GoToSocial
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Copyright (C) 2021-2022 GoToSocial Authors admin@gotosocial.org
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package dereferencing
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import (
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"errors"
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"fmt"
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"github.com/superseriousbusiness/gotosocial/internal/transport"
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)
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// ErrDB denotes that a proper error has occurred when doing
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// a database call, as opposed to a simple db.ErrNoEntries.
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type ErrDB struct {
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wrapped error
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}
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func (err *ErrDB) Error() string {
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return fmt.Sprintf("database error during dereferencing: %v", err.wrapped)
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}
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func newErrDB(err error) error {
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return &ErrDB{wrapped: err}
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}
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// ErrNotRetrievable denotes that an item could not be dereferenced
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// with the given parameters.
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type ErrNotRetrievable struct {
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wrapped error
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}
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func (err *ErrNotRetrievable) Error() string {
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return fmt.Sprintf("item could not be retrieved: %v", err.wrapped)
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}
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func newErrNotRetrievable(err error) error {
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return &ErrNotRetrievable{wrapped: err}
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}
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// ErrBadRequest denotes that insufficient or improperly formed parameters
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// were passed into one of the dereference functions.
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type ErrBadRequest struct {
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wrapped error
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}
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func (err *ErrBadRequest) Error() string {
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return fmt.Sprintf("bad request: %v", err.wrapped)
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}
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func newErrBadRequest(err error) error {
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return &ErrBadRequest{wrapped: err}
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}
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// ErrTransportError indicates that something unforeseen went wrong creating
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// a transport, or while making an http call to a remote resource with a transport.
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type ErrTransportError struct {
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wrapped error
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}
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func (err *ErrTransportError) Error() string {
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return fmt.Sprintf("transport error: %v", err.wrapped)
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}
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func newErrTransportError(err error) error {
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return &ErrTransportError{wrapped: err}
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}
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// ErrWrongType indicates that an unexpected type was returned from a remote call;
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// for example, we were served a Person when we were looking for a statusable.
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type ErrWrongType struct {
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wrapped error
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}
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func (err *ErrWrongType) Error() string {
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return fmt.Sprintf("wrong received type: %v", err.wrapped)
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}
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func newErrWrongType(err error) error {
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return &ErrWrongType{wrapped: err}
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}
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// ErrOther denotes some other kind of weird error, perhaps from a malformed json
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// or some other weird crapola.
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type ErrOther struct {
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wrapped error
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}
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func (err *ErrOther) Error() string {
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return fmt.Sprintf("unexpected error: %v", err.wrapped)
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}
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func newErrOther(err error) error {
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return &ErrOther{wrapped: err}
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}
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func wrapDerefError(derefErr error, fluff string) error {
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var (
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err error
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errWrongType *ErrWrongType
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)
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if fluff != "" {
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err = fmt.Errorf("%s: %w", fluff, derefErr)
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}
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switch {
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case errors.Is(derefErr, transport.ErrGone):
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err = newErrNotRetrievable(err)
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case errors.As(derefErr, &errWrongType):
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err = newErrWrongType(err)
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default:
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err = newErrTransportError(err)
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}
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return err
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}
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