forked from MirrorHub/mautrix-whatsapp
62 lines
2 KiB
Go
62 lines
2 KiB
Go
// mautrix-whatsapp - A Matrix-WhatsApp puppeting bridge.
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// Copyright (C) 2021 Tulir Asokan, Sumner Evans
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//
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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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//
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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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//
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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 <https://www.gnu.org/licenses/>.
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package main
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import (
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"time"
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log "maunium.net/go/maulogger/v2"
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"maunium.net/go/mautrix-whatsapp/database"
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)
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type BackfillQueue struct {
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BackfillQuery *database.BackfillQuery
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ImmediateBackfillRequests chan *database.Backfill
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DeferredBackfillRequests chan *database.Backfill
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ReCheckQueue chan bool
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log log.Logger
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}
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// RunLoop fetches backfills from the database, prioritizing immediate and forward backfills
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func (bq *BackfillQueue) RunLoop(user *User) {
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for {
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if backfill := bq.BackfillQuery.GetNext(user.MXID); backfill != nil {
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if backfill.BackfillType == database.BackfillImmediate || backfill.BackfillType == database.BackfillForward {
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bq.ImmediateBackfillRequests <- backfill
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} else if backfill.BackfillType == database.BackfillDeferred {
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select {
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case <-bq.ReCheckQueue:
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// If a queue re-check is requested, interrupt sending the
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// backfill request to the deferred channel so that
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// immediate backfills can happen ASAP.
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continue
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case bq.DeferredBackfillRequests <- backfill:
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}
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} else {
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bq.log.Debugfln("Unrecognized backfill type %d in queue", backfill.BackfillType)
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}
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backfill.MarkDone()
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} else {
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select {
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case <-bq.ReCheckQueue:
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case <-time.After(time.Minute):
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}
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}
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}
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}
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