mautrix-whatsapp/backfillqueue.go
Sumner Evans 12a23e2ca5
historysync: refactor to utilize backfill queue
Also sends the `m.room.marker` event when a backfill stage is complete.
2022-03-29 19:26:11 -06:00

69 lines
2 KiB
Go

// mautrix-whatsapp - A Matrix-WhatsApp puppeting bridge.
// Copyright (C) 2021 Tulir Asokan, Sumner Evans
//
// 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 <https://www.gnu.org/licenses/>.
package main
import (
"time"
log "maunium.net/go/maulogger/v2"
"maunium.net/go/mautrix-whatsapp/database"
)
type BackfillQueue struct {
BackfillQuery *database.BackfillQuery
ImmediateBackfillRequests chan *database.Backfill
DeferredBackfillRequests chan *database.Backfill
ReCheckQueue chan bool
log log.Logger
}
func (bq *BackfillQueue) RunLoops(user *User) {
go bq.immediateBackfillLoop(user)
bq.deferredBackfillLoop(user)
}
func (bq *BackfillQueue) immediateBackfillLoop(user *User) {
for {
if backfill := bq.BackfillQuery.GetNext(user.MXID, database.BackfillImmediate); backfill != nil {
bq.ImmediateBackfillRequests <- backfill
backfill.Delete()
} else {
select {
case <-bq.ReCheckQueue:
case <-time.After(10 * time.Second):
}
}
}
}
func (bq *BackfillQueue) deferredBackfillLoop(user *User) {
for {
// Finish all immediate backfills before doing the deferred ones.
if immediate := bq.BackfillQuery.GetNext(user.MXID, database.BackfillImmediate); immediate != nil {
time.Sleep(10 * time.Second)
continue
}
if backfill := bq.BackfillQuery.GetNext(user.MXID, database.BackfillDeferred); backfill != nil {
bq.DeferredBackfillRequests <- backfill
backfill.Delete()
} else {
time.Sleep(10 * time.Second)
}
}
}