forked from Silverfish/proton-bridge
f3c69faf8b
* Renaming GUI, CLI, no-impact config. * License header and documentation rebranding. * Rename app title and vendor. Impact: manual install * Migrating mac keychain and launch on startup. * Fix linter and linter renaming
112 lines
2.3 KiB
Go
112 lines
2.3 KiB
Go
// Copyright (c) 2022 Proton AG
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//
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// This file is part of Proton Mail Bridge.
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//
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// Proton Mail Bridge is free software: you can redistribute it and/or modify
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// it under the terms of the GNU 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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//
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// Proton Mail Bridge 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 General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Proton Mail Bridge. If not, see <https://www.gnu.org/licenses/>.
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package store
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import (
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"context"
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"sync"
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"github.com/sirupsen/logrus"
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)
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type MsgCachePool struct {
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storer Storer
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jobs chan string
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done chan struct{}
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started bool
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wg *sync.WaitGroup
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ctx context.Context
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}
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type Storer interface {
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IsCached(messageID string) bool
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BuildAndCacheMessage(ctx context.Context, messageID string) error
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}
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func newMsgCachePool(storer Storer) *MsgCachePool {
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return &MsgCachePool{
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storer: storer,
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jobs: make(chan string),
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done: make(chan struct{}),
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wg: &sync.WaitGroup{},
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ctx: context.Background(),
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}
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}
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// newJob sends a new job to the cacher if it's running.
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func (cacher *MsgCachePool) newJob(messageID string) {
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if !cacher.started {
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return
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}
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select {
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case <-cacher.done:
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return
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default:
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if !cacher.storer.IsCached(messageID) {
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cacher.wg.Add(1)
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go func() { cacher.jobs <- messageID }()
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}
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}
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}
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func (cacher *MsgCachePool) start() {
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if cacher.started {
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return
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}
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cacher.started = true
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go func() {
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for {
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select {
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case messageID := <-cacher.jobs:
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go cacher.handleJob(messageID)
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case <-cacher.done:
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return
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}
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}
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}()
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}
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func (cacher *MsgCachePool) handleJob(messageID string) {
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defer cacher.wg.Done()
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if err := cacher.storer.BuildAndCacheMessage(cacher.ctx, messageID); err != nil {
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logrus.WithError(err).Error("Failed to build and cache message")
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} else {
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logrus.WithField("messageID", messageID).Trace("Message cached")
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}
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}
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func (cacher *MsgCachePool) stop() {
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cacher.started = false
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cacher.wg.Wait()
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select {
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case <-cacher.done:
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return
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default:
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close(cacher.done)
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}
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}
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