Files
proton-bridge/internal/store/cache_watcher.go
2022-05-31 15:54:39 +02:00

78 lines
1.7 KiB
Go

// Copyright (c) 2022 Proton AG
//
// This file is part of Proton Mail Bridge.
//
// Proton Mail Bridge is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Proton Mail Bridge 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Proton Mail Bridge. If not, see <https://www.gnu.org/licenses/>.
package store
import (
"context"
"time"
"github.com/ProtonMail/proton-bridge/v2/internal/store/cache"
)
func (store *Store) StartWatcher() {
if !cache.IsOnDiskCache(store.cache) {
return
}
store.done = make(chan struct{})
ctx, cancel := context.WithCancel(context.Background())
store.msgCachePool.ctx = ctx
go func() {
ticker := time.NewTicker(10 * time.Minute)
defer ticker.Stop()
defer cancel()
for {
// NOTE(GODT-1158): Race condition here? What if DB was already closed?
messageIDs, err := store.getAllMessageIDs()
if err != nil {
return
}
for _, messageID := range messageIDs {
if !store.IsCached(messageID) {
store.msgCachePool.newJob(messageID)
}
}
select {
case <-store.done:
return
case <-ticker.C:
continue
}
}
}()
}
func (store *Store) stopWatcher() {
if store.done == nil {
return
}
select {
default:
close(store.done)
case <-store.done:
return
}
}