func autoUpgrade(cfg *config.Wrapper) {
timer := time.NewTimer(0)
sub := events.Default.Subscribe(events.DeviceConnected)
for {
select {
case event := <-sub.C():
data, ok := event.Data.(map[string]string)
if !ok || data["clientName"] != "syncthing" || upgrade.CompareVersions(data["clientVersion"], Version) != upgrade.Newer {
continue
}
l.Infof("Connected to device %s with a newer version (current %q < remote %q). Checking for upgrades.", data["id"], Version, data["clientVersion"])
case <-timer.C:
}
rel, err := upgrade.LatestRelease(cfg.Options().ReleasesURL, Version)
if err == upgrade.ErrUpgradeUnsupported {
events.Default.Unsubscribe(sub)
return
}
if err != nil {
// Don't complain too loudly here; we might simply not have
// internet connectivity, or the upgrade server might be down.
l.Infoln("Automatic upgrade:", err)
timer.Reset(time.Duration(cfg.Options().AutoUpgradeIntervalH) * time.Hour)
continue
}
if upgrade.CompareVersions(rel.Tag, Version) != upgrade.Newer {
// Skip equal, older or majorly newer (incompatible) versions
timer.Reset(time.Duration(cfg.Options().AutoUpgradeIntervalH) * time.Hour)
continue
}
l.Infof("Automatic upgrade (current %q < latest %q)", Version, rel.Tag)
err = upgrade.To(rel)
if err != nil {
l.Warnln("Automatic upgrade:", err)
timer.Reset(time.Duration(cfg.Options().AutoUpgradeIntervalH) * time.Hour)
continue
}
events.Default.Unsubscribe(sub)
l.Warnf("Automatically upgraded to version %q. Restarting in 1 minute.", rel.Tag)
time.Sleep(time.Minute)
stop <- exitUpgrading
return
}
}
func performUpgrade(release upgrade.Release) {
// Use leveldb database locks to protect against concurrent upgrades
_, err := db.Open(locations[locDatabase])
if err == nil {
err = upgrade.To(release)
if err != nil {
l.Fatalln("Upgrade:", err)
}
l.Infof("Upgraded to %q", release.Tag)
} else {
l.Infoln("Attempting upgrade through running Syncthing...")
err = upgradeViaRest()
if err != nil {
l.Fatalln("Upgrade:", err)
}
l.Infoln("Syncthing upgrading")
os.Exit(exitUpgrading)
}
}
func (s *apiService) postSystemUpgrade(w http.ResponseWriter, r *http.Request) {
rel, err := upgrade.LatestRelease(s.cfg.Options().ReleasesURL, Version)
if err != nil {
l.Warnln("getting latest release:", err)
http.Error(w, err.Error(), 500)
return
}
if upgrade.CompareVersions(rel.Tag, Version) > upgrade.Equal {
err = upgrade.To(rel)
if err != nil {
l.Warnln("upgrading:", err)
http.Error(w, err.Error(), 500)
return
}
s.flushResponse(`{"ok": "restarting"}`, w)
l.Infoln("Upgrading")
stop <- exitUpgrading
}
}