mirror of
https://github.com/superseriousbusiness/gotosocial.git
synced 2025-10-30 23:42:25 -05:00
095663f5cc* replicate issue * update go-structr to v0.8.10 with internal linked-list fix, small tweaks to caching of interaction requests * remove debug function --------- Co-authored-by: tobi <tobi.smethurst@protonmail.com>
69 lines
2.2 KiB
Go
69 lines
2.2 KiB
Go
// GoToSocial
|
|
// Copyright (C) GoToSocial Authors admin@gotosocial.org
|
|
// SPDX-License-Identifier: AGPL-3.0-or-later
|
|
//
|
|
// This program is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Affero General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// This program is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU Affero General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Affero General Public License
|
|
// along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
package cache
|
|
|
|
import (
|
|
"errors"
|
|
"time"
|
|
|
|
errorsv2 "codeberg.org/gruf/go-errors/v2"
|
|
"github.com/superseriousbusiness/gotosocial/internal/db"
|
|
"github.com/superseriousbusiness/gotosocial/internal/log"
|
|
)
|
|
|
|
// SentinelError is an error that can be returned and checked against to indicate a non-permanent
|
|
// error return from a cache loader callback, e.g. a temporary situation that will soon be fixed.
|
|
var SentinelError = errors.New("BUG: error should not be returned") //nolint:revive
|
|
|
|
// ignoreErrors is an error matching function used to signal which errors
|
|
// the result caches should NOT hold onto. these amount to anything non-permanent.
|
|
func ignoreErrors(err error) bool {
|
|
return !errorsv2.IsV2(
|
|
err,
|
|
|
|
// the only cacheable errs,
|
|
// i.e anything permanent
|
|
// (until invalidation).
|
|
db.ErrNoEntries,
|
|
db.ErrAlreadyExists,
|
|
)
|
|
}
|
|
|
|
// nocopy when embedded will signal linter to
|
|
// error on pass-by-value of parent struct.
|
|
type nocopy struct{}
|
|
|
|
func (*nocopy) Lock() {}
|
|
|
|
func (*nocopy) Unlock() {}
|
|
|
|
// tryUntil will attempt to call 'do' for 'count' attempts, before panicking with 'msg'.
|
|
func tryUntil(msg string, count int, do func() bool) {
|
|
for i := 0; i < count; i++ {
|
|
if do() {
|
|
// success.
|
|
return
|
|
}
|
|
|
|
// Sleep for a little before retry (a bcakoff).
|
|
time.Sleep(time.Millisecond * 1 << (i + 1))
|
|
}
|
|
|
|
// panic on total failure as this shouldn't happen.
|
|
log.Panicf(nil, "failed %s after %d tries", msg, count)
|
|
}
|