85 lines
2.6 KiB
Go
85 lines
2.6 KiB
Go
/*
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GoToSocial
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Copyright (C) 2021 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 federatingdb
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import (
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"context"
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"sync"
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"time"
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"github.com/go-fed/activity/pub"
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"github.com/go-fed/activity/streams/vocab"
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"github.com/sirupsen/logrus"
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"github.com/superseriousbusiness/gotosocial/internal/config"
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"github.com/superseriousbusiness/gotosocial/internal/db"
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"github.com/superseriousbusiness/gotosocial/internal/typeutils"
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)
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// DB wraps the pub.Database interface with a couple of custom functions for GoToSocial.
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type DB interface {
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pub.Database
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Undo(ctx context.Context, undo vocab.ActivityStreamsUndo) error
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Accept(ctx context.Context, accept vocab.ActivityStreamsAccept) error
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Announce(ctx context.Context, announce vocab.ActivityStreamsAnnounce) error
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}
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// FederatingDB uses the underlying DB interface to implement the go-fed pub.Database interface.
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// It doesn't care what the underlying implementation of the DB interface is, as long as it works.
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type federatingDB struct {
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mutex sync.Mutex
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locks map[string]*mutex
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pool sync.Pool
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db db.DB
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config *config.Config
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log *logrus.Logger
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typeConverter typeutils.TypeConverter
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}
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// New returns a DB interface using the given database, config, and logger.
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func New(db db.DB, config *config.Config, log *logrus.Logger) DB {
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fdb := federatingDB{
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mutex: sync.Mutex{},
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locks: make(map[string]*mutex, 100),
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pool: sync.Pool{New: func() interface{} { return &mutex{} }},
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db: db,
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config: config,
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log: log,
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typeConverter: typeutils.NewConverter(config, db, log),
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}
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go fdb.cleanupLocks()
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return &fdb
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}
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func (db *federatingDB) cleanupLocks() {
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for {
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// Sleep for a minute...
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time.Sleep(time.Minute)
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// Delete unused locks from map
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db.mutex.Lock()
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for id, mu := range db.locks {
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if !mu.inUse() {
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delete(db.locks, id)
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db.pool.Put(mu)
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}
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}
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db.mutex.Unlock()
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}
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}
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