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forgejo/services/mirror/mirror.go
6543 63d7cbcef1
Make mirror feature more configurable (#16957)
Rename`[repository]` `DISABLE_MIRRORS` to `[mirror]` `DISABLE_NEW_PULL`  and add `ENABLED` and `DISABLE_NEW_PUSH` with the below meanings:

- `ENABLED`: **true**: Enables the mirror functionality. Set to **false** to disable all mirrors.
- `DISABLE_NEW_PULL`: **false**: Disable the creation of **new** mirrors. Pre-existing mirrors remain valid.
- `DISABLE_NEW_PUSH`: **false**: Disable the creation of **new** push mirrors. Pre-existing mirrors remain valid.


Co-authored-by: zeripath <art27@cantab.net>
Co-authored-by: delvh <dev.lh@web.de>
2021-09-07 17:49:36 +02:00

116 lines
2.8 KiB
Go

// Copyright 2019 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package mirror
import (
"context"
"fmt"
"strconv"
"strings"
"code.gitea.io/gitea/models"
"code.gitea.io/gitea/modules/graceful"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/modules/sync"
)
// mirrorQueue holds an UniqueQueue object of the mirror
var mirrorQueue = sync.NewUniqueQueue(setting.Repository.MirrorQueueLength)
// Update checks and updates mirror repositories.
func Update(ctx context.Context) error {
if !setting.Mirror.Enabled {
log.Warn("Mirror feature disabled, but cron job enabled: skip update")
return nil
}
log.Trace("Doing: Update")
handler := func(idx int, bean interface{}) error {
var item string
if m, ok := bean.(*models.Mirror); ok {
if m.Repo == nil {
log.Error("Disconnected mirror found: %d", m.ID)
return nil
}
item = fmt.Sprintf("pull %d", m.RepoID)
} else if m, ok := bean.(*models.PushMirror); ok {
if m.Repo == nil {
log.Error("Disconnected push-mirror found: %d", m.ID)
return nil
}
item = fmt.Sprintf("push %d", m.ID)
} else {
log.Error("Unknown bean: %v", bean)
return nil
}
select {
case <-ctx.Done():
return fmt.Errorf("Aborted")
default:
mirrorQueue.Add(item)
return nil
}
}
if err := models.MirrorsIterate(handler); err != nil {
log.Error("MirrorsIterate: %v", err)
return err
}
if err := models.PushMirrorsIterate(handler); err != nil {
log.Error("PushMirrorsIterate: %v", err)
return err
}
log.Trace("Finished: Update")
return nil
}
// syncMirrors checks and syncs mirrors.
// FIXME: graceful: this should be a persistable queue
func syncMirrors(ctx context.Context) {
// Start listening on new sync requests.
for {
select {
case <-ctx.Done():
mirrorQueue.Close()
return
case item := <-mirrorQueue.Queue():
id, _ := strconv.ParseInt(item[5:], 10, 64)
if strings.HasPrefix(item, "pull") {
_ = SyncPullMirror(ctx, id)
} else if strings.HasPrefix(item, "push") {
_ = SyncPushMirror(ctx, id)
} else {
log.Error("Unknown item in queue: %v", item)
}
mirrorQueue.Remove(item)
}
}
}
// InitSyncMirrors initializes a go routine to sync the mirrors
func InitSyncMirrors() {
if !setting.Mirror.Enabled {
return
}
go graceful.GetManager().RunWithShutdownContext(syncMirrors)
}
// StartToMirror adds repoID to mirror queue
func StartToMirror(repoID int64) {
if !setting.Mirror.Enabled {
return
}
go mirrorQueue.Add(fmt.Sprintf("pull %d", repoID))
}
// AddPushMirrorToQueue adds the push mirror to the queue
func AddPushMirrorToQueue(mirrorID int64) {
if !setting.Mirror.Enabled {
return
}
go mirrorQueue.Add(fmt.Sprintf("push %d", mirrorID))
}