forked from boypt/simple-torrent
/
server_bg.go
150 lines (132 loc) · 3.41 KB
/
server_bg.go
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package server
import (
"fmt"
"io/ioutil"
"log"
"os"
"path/filepath"
"strings"
"time"
"github.com/radovskyb/watcher"
)
func (s *Server) backgroundRoutines() {
go s.fetchSearchConfig(s.state.Config.ScraperURL)
//poll torrents and files
go func() {
for {
if s.state.NumConnections() > 0 {
// only update the state object if user connected
s.state.Lock()
s.state.Torrents = s.engine.GetTorrents()
s.state.Downloads = s.listFiles()
s.state.Unlock()
s.state.Push()
}
s.engine.TaskRoutine()
time.Sleep(3 * time.Second)
}
}()
//start collecting stats
go func() {
for {
if s.state.NumConnections() > 0 {
c := s.engine.Config()
s.state.Stats.System.loadStats(c.DownloadDirectory)
}
time.Sleep(5 * time.Second)
}
}()
// rss updater
go func() {
for {
s.updateRSS()
time.Sleep(30 * time.Minute)
}
}()
go s.engine.UpdateTrackers()
go s.RestoreTorrent()
}
func (s *Server) RestoreTorrent() error {
if w, err := os.Stat(s.state.Config.WatchDirectory); os.IsNotExist(err) || (err == nil && !w.IsDir()) {
log.Printf("[Watcher] %s is not dir", s.state.Config.WatchDirectory)
return err
}
// restore saved torrent tasks
tors, _ := filepath.Glob(filepath.Join(s.state.Config.WatchDirectory, "*.torrent"))
for _, t := range tors {
if err := s.engine.NewTorrentByFilePath(t); err == nil {
if strings.HasPrefix(filepath.Base(t), cacheSavedPrefix) {
log.Printf("Inital Task Restored: %s \n", t)
} else {
log.Printf("Inital Task: added %s, file removed\n", t)
os.Remove(t)
}
} else {
log.Printf("Inital Task: fail to add %s, ERR:%#v\n", t, err)
}
}
// restore saved magnet tasks
infos, _ := filepath.Glob(filepath.Join(s.state.Config.WatchDirectory, "*.info"))
for _, i := range infos {
fn := filepath.Base(i)
if strings.HasPrefix(fn, cacheSavedPrefix) && len(fn) == 59 {
mag, err := ioutil.ReadFile(i)
if err != nil {
continue
}
if err := s.engine.NewMagnet(string(mag)); err == nil {
log.Printf("Inital Task Restored: %s \n", fn)
} else {
log.Printf("Inital Task: fail to add %s, ERR:%#v\n", fn, err)
}
}
}
return nil
}
func (s *Server) torrentWatcher() error {
if s.watcher != nil {
log.Print("Torrent Watcher: close")
s.watcher.Close()
s.watcher = nil
}
if w, err := os.Stat(s.state.Config.WatchDirectory); os.IsNotExist(err) || (err == nil && !w.IsDir()) {
return fmt.Errorf("[Watcher] %s is not dir", s.state.Config.WatchDirectory)
}
log.Printf("Torrent Watcher: watching torrent file in %s", s.state.Config.WatchDirectory)
w := watcher.New()
w.SetMaxEvents(10)
w.FilterOps(watcher.Create)
go func() {
for {
select {
case event := <-w.Event:
if event.IsDir() {
continue
}
// skip auto saved torrent
if strings.HasPrefix(event.Name(), cacheSavedPrefix) {
continue
}
if strings.HasSuffix(event.Name(), ".torrent") {
if err := s.engine.NewTorrentByFilePath(event.Path); err == nil {
log.Printf("Torrent Watcher: added %s, file removed\n", event.Name())
os.Remove(event.Path)
} else {
log.Printf("Torrent Watcher: fail to add %s, ERR:%#v\n", event.Name(), err)
}
}
case err := <-w.Error:
log.Print(err)
case <-w.Closed:
return
}
}
}()
// Watch this folder for changes.
if err := w.Add(s.state.Config.WatchDirectory); err != nil {
return err
}
s.watcher = w
go w.Start(time.Second * 5)
return nil
}