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forgejo/services/mirror/mirror.go
zeripath df44017328
Restart zero worker if there is still work to do (#18658)
* Restart zero worker if there is still work to do

It is possible for the zero worker to timeout before all the work is finished.
This may mean that work may take a long time to complete because a worker will only
be induced on repushing.

Also ensure that requested count is reset after pulls and push mirror sync requests and add some more trace logging to the queue push.

Fix #18607

Signed-off-by: Andrew Thornton <art27@cantab.net>
2022-02-08 14:02:32 +00:00

189 lines
4.5 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"
repo_model "code.gitea.io/gitea/models/repo"
"code.gitea.io/gitea/modules/graceful"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/queue"
"code.gitea.io/gitea/modules/setting"
)
var mirrorQueue queue.UniqueQueue
// SyncType type of sync request
type SyncType int
const (
// PullMirrorType for pull mirrors
PullMirrorType SyncType = iota
// PushMirrorType for push mirrors
PushMirrorType
)
// SyncRequest for the mirror queue
type SyncRequest struct {
Type SyncType
RepoID int64
}
// doMirrorSync causes this request to mirror itself
func doMirrorSync(ctx context.Context, req *SyncRequest) {
switch req.Type {
case PushMirrorType:
_ = SyncPushMirror(ctx, req.RepoID)
case PullMirrorType:
_ = SyncPullMirror(ctx, req.RepoID)
default:
log.Error("Unknown Request type in queue: %v for RepoID[%d]", req.Type, req.RepoID)
}
}
var errLimit = fmt.Errorf("reached limit")
// Update checks and updates mirror repositories.
func Update(ctx context.Context, pullLimit, pushLimit int) error {
if !setting.Mirror.Enabled {
log.Warn("Mirror feature disabled, but cron job enabled: skip update")
return nil
}
log.Trace("Doing: Update")
requested := 0
handler := func(idx int, bean interface{}, limit int) error {
var item SyncRequest
var repo *repo_model.Repository
if m, ok := bean.(*repo_model.Mirror); ok {
if m.Repo == nil {
log.Error("Disconnected mirror found: %d", m.ID)
return nil
}
repo = m.Repo
item = SyncRequest{
Type: PullMirrorType,
RepoID: m.RepoID,
}
} else if m, ok := bean.(*repo_model.PushMirror); ok {
if m.Repo == nil {
log.Error("Disconnected push-mirror found: %d", m.ID)
return nil
}
repo = m.Repo
item = SyncRequest{
Type: PushMirrorType,
RepoID: m.RepoID,
}
} else {
log.Error("Unknown bean: %v", bean)
return nil
}
// Check we've not been cancelled
select {
case <-ctx.Done():
return fmt.Errorf("aborted")
default:
}
// Push to the Queue
if err := mirrorQueue.Push(&item); err != nil {
if err == queue.ErrAlreadyInQueue {
if item.Type == PushMirrorType {
log.Trace("PushMirrors for %-v already queued for sync", repo)
} else {
log.Trace("PullMirrors for %-v already queued for sync", repo)
}
return nil
}
return err
}
requested++
if limit > 0 && requested > limit {
return errLimit
}
return nil
}
pullMirrorsRequested := 0
if pullLimit != 0 {
requested = 0
if err := repo_model.MirrorsIterate(func(idx int, bean interface{}) error {
return handler(idx, bean, pullLimit)
}); err != nil && err != errLimit {
log.Error("MirrorsIterate: %v", err)
return err
}
pullMirrorsRequested, requested = requested, 0
}
pushMirrorsRequested := 0
if pushLimit != 0 {
requested = 0
if err := repo_model.PushMirrorsIterate(func(idx int, bean interface{}) error {
return handler(idx, bean, pushLimit)
}); err != nil && err != errLimit {
log.Error("PushMirrorsIterate: %v", err)
return err
}
pushMirrorsRequested, requested = requested, 0
}
log.Trace("Finished: Update: %d pull mirrors and %d push mirrors queued", pullMirrorsRequested, pushMirrorsRequested)
return nil
}
func queueHandle(data ...queue.Data) []queue.Data {
for _, datum := range data {
req := datum.(*SyncRequest)
doMirrorSync(graceful.GetManager().ShutdownContext(), req)
}
return nil
}
// InitSyncMirrors initializes a go routine to sync the mirrors
func InitSyncMirrors() {
if !setting.Mirror.Enabled {
return
}
mirrorQueue = queue.CreateUniqueQueue("mirror", queueHandle, new(SyncRequest))
go graceful.GetManager().RunWithShutdownFns(mirrorQueue.Run)
}
// StartToMirror adds repoID to mirror queue
func StartToMirror(repoID int64) {
if !setting.Mirror.Enabled {
return
}
go func() {
err := mirrorQueue.Push(&SyncRequest{
Type: PullMirrorType,
RepoID: repoID,
})
if err != nil {
log.Error("Unable to push sync request for to the queue for push mirror repo[%d]: Error: %v", repoID, err)
}
}()
}
// AddPushMirrorToQueue adds the push mirror to the queue
func AddPushMirrorToQueue(mirrorID int64) {
if !setting.Mirror.Enabled {
return
}
go func() {
err := mirrorQueue.Push(&SyncRequest{
Type: PushMirrorType,
RepoID: mirrorID,
})
if err != nil {
log.Error("Unable to push sync request to the queue for pull mirror repo[%d]: Error: %v", mirrorID, err)
}
}()
}