414 lines
22 KiB
Go
414 lines
22 KiB
Go
package engine //main file for all the calculations and data gathering needed for creating the running torrent arrays
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import (
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"fmt"
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"io/ioutil"
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"os"
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"strconv"
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"strings"
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"time"
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"github.com/anacrolix/torrent"
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"github.com/anacrolix/torrent/metainfo"
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"github.com/asdine/storm"
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Settings "github.com/deranjer/goTorrent/settings"
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Storage "github.com/deranjer/goTorrent/storage"
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"github.com/gorilla/websocket"
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"github.com/mmcdole/gofeed"
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"github.com/sirupsen/logrus"
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)
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//Logger is the injected variable for global logger
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var Logger *logrus.Logger
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//Config is the injected variable for the torrent config
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var Config Settings.FullClientSettings
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//Conn is the injected variable for the websocket connection
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var Conn *websocket.Conn
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//CreateServerPushMessage Pushes a message from the server to the client
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func CreateServerPushMessage(message ServerPushMessage, conn *websocket.Conn) {
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conn.WriteJSON(message)
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}
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//RefreshSingleRSSFeed refreshing a single RSS feed to send to the client (so no updating database) mainly by updating the torrent list to display any changes
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func RefreshSingleRSSFeed(db *storm.DB, RSSFeed Storage.SingleRSSFeed) Storage.SingleRSSFeed { //Todo.. duplicate as cron job... any way to merge these to reduce duplication?
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singleRSSFeed := Storage.SingleRSSFeed{URL: RSSFeed.URL, Name: RSSFeed.Name}
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singleRSSTorrent := Storage.SingleRSSTorrent{}
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fp := gofeed.NewParser()
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feed, err := fp.ParseURL(RSSFeed.URL)
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if err != nil {
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Logger.WithFields(logrus.Fields{"RSSFeedURL": RSSFeed.URL, "error": err}).Error("Unable to parse URL")
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CreateServerPushMessage(ServerPushMessage{MessageType: "serverPushMessage", MessageLevel: "error", Payload: "Unable to add Storage Path"}, Conn)
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}
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for _, RSSTorrent := range feed.Items {
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singleRSSTorrent.Link = RSSTorrent.Link
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singleRSSTorrent.Title = RSSTorrent.Title
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singleRSSTorrent.PubDate = RSSTorrent.Published
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singleRSSFeed.Torrents = append(singleRSSFeed.Torrents, singleRSSTorrent)
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}
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return singleRSSFeed
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}
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//ForceRSSRefresh forces a refresh (in addition to the cron schedule) to add the new RSS feed
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func ForceRSSRefresh(db *storm.DB, RSSFeedStore Storage.RSSFeedStore) { //Todo.. duplicate as cron job... any way to merge these to reduce duplication?
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singleRSSTorrent := Storage.SingleRSSTorrent{}
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newFeedStore := Storage.RSSFeedStore{ID: RSSFeedStore.ID} //creating a new feed store just using old one to parse for new torrents
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fp := gofeed.NewParser()
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Logger.WithFields(logrus.Fields{"RSSFeedStoreLength": len(RSSFeedStore.RSSFeeds)}).Debug("Length of RSS feeds (should be ONE)")
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for _, singleFeed := range RSSFeedStore.RSSFeeds {
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feed, err := fp.ParseURL(singleFeed.URL)
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if err != nil {
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Logger.WithFields(logrus.Fields{"RSSFeedURL": singleFeed.URL, "error": err}).Error("Unable to parse RSS URL")
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CreateServerPushMessage(ServerPushMessage{MessageType: "serverPushMessage", MessageLevel: "error", Payload: "Unable to parse RSS URL"}, Conn)
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}
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for _, RSSTorrent := range feed.Items {
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singleRSSTorrent.Link = RSSTorrent.Link
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singleRSSTorrent.Title = RSSTorrent.Title
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singleRSSTorrent.PubDate = RSSTorrent.Published
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singleFeed.Torrents = append(singleFeed.Torrents, singleRSSTorrent)
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}
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newFeedStore.RSSFeeds = append(newFeedStore.RSSFeeds, singleFeed)
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}
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Storage.UpdateRSSFeeds(db, newFeedStore) //Calling this to fully update storage will all rss feeds
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}
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//timeOutInfo forcing a timeout of the torrent if it doesn't load from program restart
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func timeOutInfo(clientTorrent *torrent.Torrent, seconds time.Duration) (deleted bool) {
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Logger.WithFields(logrus.Fields{"Seconds to wait for info...": seconds}).Info("Attempting to download info for torrent")
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timeout := make(chan bool, 1) //creating a timeout channel for our gotinfo
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go func() {
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time.Sleep(seconds * time.Second)
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timeout <- true
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}()
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select {
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case <-clientTorrent.GotInfo(): //attempting to retrieve info for torrent
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Logger.WithFields(logrus.Fields{"clientTorrentName": clientTorrent.Name()}).Debug("Received torrent info for torrent")
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return false
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case <-timeout: // getting info for torrent has timed out so purging the torrent
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Logger.WithFields(logrus.Fields{"clientTorrentName": clientTorrent.Name()}).Error("Forced to drop torrent from timeout waiting for info")
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CreateServerPushMessage(ServerPushMessage{MessageType: "serverPushMessage", MessageLevel: "error", Payload: "Timout waiting for torrent info... dropping"}, Conn)
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clientTorrent.Drop()
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return true
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}
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}
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func readTorrentFileFromDB(element *Storage.TorrentLocal, tclient *torrent.Client, db *storm.DB) (singleTorrent *torrent.Torrent, err error) {
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tempFile, err := ioutil.TempFile("", "TorrentFileTemp")
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if err != nil {
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Logger.WithFields(logrus.Fields{"tempfile": tempFile, "err": err}).Error("Unable to create tempfile")
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return nil, err
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}
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//defer tempFile.Close() //Todo.. if we remove this do we need to close it?
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defer os.Remove(tempFile.Name())
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if _, err := tempFile.Write(element.TorrentFile); err != nil { //writing out out the entire file back into the temp dir from boltdb
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Logger.WithFields(logrus.Fields{"tempfile": tempFile, "err": err}).Error("Unable to write to tempfile")
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return nil, err
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}
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if err := tempFile.Close(); err != nil { //close the tempfile so that we can add it back into the torrent client
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Logger.WithFields(logrus.Fields{"tempfile": tempFile, "err": err}).Error("Unable to close tempfile")
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}
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_, err = os.Stat(element.TorrentFileName) //if we CAN find the torrent, add it
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if err != nil {
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Logger.WithFields(logrus.Fields{"tempfile": tempFile, "err": err}).Error("Unable to find file")
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Storage.DelTorrentLocalStorage(db, element.Hash) //purge the torrent
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return nil, err
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}
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singleTorrent, err = tclient.AddTorrentFromFile(element.TorrentFileName)
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if err != nil {
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Logger.WithFields(logrus.Fields{"tempfile": element.TorrentFileName, "err": err}).Error("Unable to add Torrent from file!")
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CreateServerPushMessage(ServerPushMessage{MessageType: "serverPushMessage", MessageLevel: "error", Payload: "Unable to add Torrent from file!"}, Conn)
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Storage.DelTorrentLocalStorage(db, element.Hash) //purge the torrent
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return nil, err
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}
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return singleTorrent, nil
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}
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//StartTorrent creates the storage.db entry and starts A NEW TORRENT and adds to the running torrent array
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func StartTorrent(clientTorrent *torrent.Torrent, torrentLocalStorage Storage.TorrentLocal, torrentDbStorage *storm.DB, torrentType, torrentFilePathAbs, torrentStoragePath, labelValue string, config Settings.FullClientSettings) {
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timedOut := timeOutInfo(clientTorrent, 45) //seeing if adding the torrent times out (giving 45 seconds)
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if timedOut { //if we fail to add the torrent return
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return
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}
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var TempHash metainfo.Hash
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TempHash = clientTorrent.InfoHash()
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allStoredTorrents := Storage.FetchAllStoredTorrents(torrentDbStorage)
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for _, runningTorrentHashes := range allStoredTorrents {
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if runningTorrentHashes.Hash == TempHash.String() {
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Logger.WithFields(logrus.Fields{"Hash": TempHash.String()}).Info("Torrent has duplicate hash to already running torrent... will not add to storage")
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return
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}
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}
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torrentLocalStorage.Hash = TempHash.String() // we will store the infohash to add it back later on client restart (if needed)
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torrentLocalStorage.InfoBytes = clientTorrent.Metainfo().InfoBytes
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torrentLocalStorage.Label = labelValue
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torrentLocalStorage.DateAdded = time.Now().Format("Jan _2 2006")
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torrentLocalStorage.StoragePath = torrentStoragePath
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torrentLocalStorage.TempStoragePath = config.TorrentConfig.DataDir
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torrentLocalStorage.TorrentName = clientTorrent.Name()
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torrentLocalStorage.TorrentUploadLimit = true //by default all of the torrents will stop uploading after the global rate is set.
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torrentLocalStorage.TorrentMoved = false //by default the torrent has no been moved.
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torrentLocalStorage.TorrentStatus = "Running" //by default start all the torrents as downloading.
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torrentLocalStorage.TorrentType = torrentType //either "file" or "magnet" maybe more in the future
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torrentLocalStorage.TorrentSize = clientTorrent.Length() //Length will change as we cancel files so store it in DB
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if torrentType == "file" { //if it is a file read the entire file into the database for us to spit out later
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torrentfile, err := ioutil.ReadFile(torrentFilePathAbs)
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torrentLocalStorage.TorrentFileName = torrentFilePathAbs
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if err != nil {
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Logger.WithFields(logrus.Fields{"torrentFile": torrentfile, "error": err}).Error("Unable to read the torrent file")
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}
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torrentLocalStorage.TorrentFile = torrentfile //storing the entire file in to database
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}
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Logger.WithFields(logrus.Fields{"Storage Path": torrentStoragePath, "Torrent Name": clientTorrent.Name()}).Info("Adding Torrent with following storage path")
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torrentFiles := clientTorrent.Files() //storing all of the files in the database along with the priority
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var TorrentFilePriorityArray = []Storage.TorrentFilePriority{}
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for _, singleFile := range torrentFiles { //creating the database setup for the file array
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var torrentFilePriority = Storage.TorrentFilePriority{}
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torrentFilePriority.TorrentFilePath = singleFile.DisplayPath()
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torrentFilePriority.TorrentFilePriority = "Normal"
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torrentFilePriority.TorrentFileSize = singleFile.Length()
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TorrentFilePriorityArray = append(TorrentFilePriorityArray, torrentFilePriority)
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}
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torrentLocalStorage.TorrentFilePriority = TorrentFilePriorityArray
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Storage.AddTorrentLocalStorage(torrentDbStorage, torrentLocalStorage) //writing all of the data to the database
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clientTorrent.DownloadAll() //set all pieces to download
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NumPieces := clientTorrent.NumPieces() //find the number of pieces
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clientTorrent.CancelPieces(1, NumPieces) //cancel all of the pieces to use file priority
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for _, singleFile := range clientTorrent.Files() { //setting all of the file priorities to normal
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singleFile.SetPriority(torrent.PiecePriorityNormal)
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}
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CreateServerPushMessage(ServerPushMessage{MessageType: "serverPushMessage", MessageLevel: "success", Payload: "Torrent added!"}, Conn)
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}
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//CreateInitialTorrentArray adds all the torrents on program start from the database
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func CreateInitialTorrentArray(tclient *torrent.Client, TorrentLocalArray []*Storage.TorrentLocal, db *storm.DB) {
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for _, singleTorrentFromStorage := range TorrentLocalArray {
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var singleTorrent *torrent.Torrent
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var err error
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if singleTorrentFromStorage.TorrentType == "file" { //if it is a file pull it from the uploaded torrent folder
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singleTorrent, err = readTorrentFileFromDB(singleTorrentFromStorage, tclient, db)
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if err != nil {
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continue
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}
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} else {
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singleTorrentFromStorageMagnet := "magnet:?xt=urn:btih:" + singleTorrentFromStorage.Hash //For magnet links just need to prepend the magnet part to the hash to readd
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singleTorrent, err = tclient.AddMagnet(singleTorrentFromStorageMagnet)
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if err != nil {
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continue
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}
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}
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if len(singleTorrentFromStorage.InfoBytes) == 0 { //TODO.. kind of a fringe scenario.. not sure if needed since the db should always have the infobytes
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timeOut := timeOutInfo(singleTorrent, 45)
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if timeOut == true { // if we did timeout then drop the torrent from the bolt.db database
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Storage.DelTorrentLocalStorage(db, singleTorrentFromStorage.Hash) //purging torrent from the local database
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continue
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}
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singleTorrentFromStorage.InfoBytes = singleTorrent.Metainfo().InfoBytes
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}
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err = singleTorrent.SetInfoBytes(singleTorrentFromStorage.InfoBytes) //setting the infobytes back into the torrent
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if err != nil {
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Logger.WithFields(logrus.Fields{"torrentFile": singleTorrent.Name(), "error": err}).Error("Unable to add infobytes to the torrent!")
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}
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if singleTorrentFromStorage.TorrentStatus != "Completed" && singleTorrentFromStorage.TorrentStatus != "Stopped" {
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singleTorrent.DownloadAll() //set all of the pieces to download (piece prio is NE to file prio)
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NumPieces := singleTorrent.NumPieces() //find the number of pieces
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singleTorrent.CancelPieces(1, NumPieces) //cancel all of the pieces to use file priority
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for _, singleFile := range singleTorrent.Files() { //setting all of the file priorities to normal
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singleFile.SetPriority(torrent.PiecePriorityNormal)
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}
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}
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}
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SetFilePriority(tclient, db) //Setting the desired file priority from storage
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}
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//CreateRunningTorrentArray creates the entire torrent list to pass to client
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func CreateRunningTorrentArray(tclient *torrent.Client, TorrentLocalArray []*Storage.TorrentLocal, PreviousTorrentArray []ClientDB, config Settings.FullClientSettings, db *storm.DB) (RunningTorrentArray []ClientDB) {
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for _, singleTorrentFromStorage := range TorrentLocalArray {
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var singleTorrent *torrent.Torrent
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var TempHash metainfo.Hash
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for _, liveTorrent := range tclient.Torrents() { //matching the torrent from storage to the live torrent
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if singleTorrentFromStorage.Hash == liveTorrent.InfoHash().String() {
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singleTorrent = liveTorrent
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}
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}
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tickUpdateStruct := Storage.TorrentLocal{} //we are shoving the tick updates into a torrentlocal struct to pass to storage happens at the end of the routine
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fullClientDB := new(ClientDB)
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//singleTorrentStorageInfo := Storage.FetchTorrentFromStorage(db, TempHash.String()) //pulling the single torrent info from storage ()
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if singleTorrentFromStorage.TorrentStatus == "Dropped" {
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Logger.WithFields(logrus.Fields{"selection": singleTorrentFromStorage.TorrentName}).Info("Deleting just the torrent")
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singleTorrent.Drop()
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Storage.DelTorrentLocalStorage(db, singleTorrentFromStorage.Hash)
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}
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if singleTorrentFromStorage.TorrentStatus == "DroppedData" {
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Logger.WithFields(logrus.Fields{"selection": singleTorrentFromStorage.TorrentName}).Info("Deleting just the torrent")
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singleTorrent.Drop()
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Storage.DelTorrentLocalStorageAndFiles(db, singleTorrentFromStorage.Hash, Config.TorrentConfig.DataDir)
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}
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if singleTorrentFromStorage.TorrentType == "file" { //if it is a file pull it from the uploaded torrent folder
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fullClientDB.SourceType = "Torrent File"
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} else {
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fullClientDB.SourceType = "Magnet Link"
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}
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calculatedTotalSize := CalculateDownloadSize(singleTorrentFromStorage, singleTorrent)
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calculatedCompletedSize := CalculateCompletedSize(singleTorrentFromStorage, singleTorrent)
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TempHash = singleTorrent.InfoHash()
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if (calculatedCompletedSize == singleTorrentFromStorage.TorrentSize) && (singleTorrentFromStorage.TorrentMoved == false) { //if we are done downloading and haven't moved torrent yet
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Logger.WithFields(logrus.Fields{"singleTorrent": singleTorrentFromStorage.TorrentName}).Info("Torrent Completed, moving...")
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tStorage := Storage.FetchTorrentFromStorage(db, singleTorrent.InfoHash().String()) //Todo... find a better way to do this in the go-routine currently just to make sure it doesn't trigger multiple times
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tStorage.TorrentMoved = true
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Storage.UpdateStorageTick(db, tStorage)
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go func() { //moving torrent in separate go-routine then verifying that the data is still there and correct
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err := MoveAndLeaveSymlink(config, singleTorrent.InfoHash().String(), db, false, "") //can take some time to move file so running this in another thread TODO make this a goroutine and skip this block if the routine is still running
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if err != nil { //If we fail, print the error and attempt a retry
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Logger.WithFields(logrus.Fields{"singleTorrent": singleTorrentFromStorage.TorrentName, "error": err}).Error("Failed to move Torrent!")
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VerifyData(singleTorrent)
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tStorage.TorrentMoved = false
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Storage.UpdateStorageTick(db, tStorage)
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}
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}()
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}
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fullStruct := singleTorrent.Stats()
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activePeersString := strconv.Itoa(fullStruct.ActivePeers) //converting to strings
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totalPeersString := fmt.Sprintf("%v", fullStruct.TotalPeers)
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fullClientDB.StoragePath = singleTorrentFromStorage.StoragePath
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downloadedSizeHumanized := HumanizeBytes(float32(calculatedCompletedSize)) //convert size to GB if needed
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totalSizeHumanized := HumanizeBytes(float32(calculatedTotalSize))
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fullClientDB.DownloadedSize = downloadedSizeHumanized
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fullClientDB.Size = totalSizeHumanized
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PercentDone := fmt.Sprintf("%.2f", float32(calculatedCompletedSize)/float32(calculatedTotalSize))
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fullClientDB.TorrentHash = TempHash
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fullClientDB.PercentDone = PercentDone
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fullClientDB.DataBytesRead = fullStruct.ConnStats.BytesReadData //used for calculations not passed to client calculating up/down speed
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fullClientDB.DataBytesWritten = fullStruct.ConnStats.BytesWrittenData //used for calculations not passed to client calculating up/down speed
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fullClientDB.ActivePeers = activePeersString + " / (" + totalPeersString + ")"
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fullClientDB.TorrentHashString = TempHash.String()
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fullClientDB.TorrentName = singleTorrentFromStorage.TorrentName
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fullClientDB.DateAdded = singleTorrentFromStorage.DateAdded
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fullClientDB.TorrentLabel = singleTorrentFromStorage.Label
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fullClientDB.BytesCompleted = calculatedCompletedSize
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fullClientDB.NumberofFiles = len(singleTorrent.Files())
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if len(PreviousTorrentArray) > 0 { //if we actually have a previous array //ranging over the previous torrent array to calculate the speed for each torrent
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for _, previousElement := range PreviousTorrentArray {
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TempHash := singleTorrent.InfoHash()
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if previousElement.TorrentHashString == TempHash.String() { //matching previous to new
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CalculateTorrentSpeed(singleTorrent, fullClientDB, previousElement, calculatedCompletedSize)
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fullClientDB.TotalUploadedBytes = singleTorrentFromStorage.UploadedBytes + (fullStruct.ConnStats.BytesWrittenData - previousElement.DataBytesWritten)
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}
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}
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}
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CalculateTorrentETA(singleTorrentFromStorage.TorrentSize, calculatedCompletedSize, fullClientDB) //needs to be here since we need the speed calculated before we can estimate the eta.
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fullClientDB.TotalUploadedSize = HumanizeBytes(float32(fullClientDB.TotalUploadedBytes))
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fullClientDB.UploadRatio = CalculateUploadRatio(singleTorrent, fullClientDB) //calculate the upload ratio
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CalculateTorrentStatus(singleTorrent, fullClientDB, config, singleTorrentFromStorage, calculatedCompletedSize, calculatedTotalSize)
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tickUpdateStruct.UploadRatio = fullClientDB.UploadRatio
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tickUpdateStruct.TorrentSize = calculatedTotalSize
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tickUpdateStruct.UploadedBytes = fullClientDB.TotalUploadedBytes
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tickUpdateStruct.TorrentStatus = fullClientDB.Status
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tickUpdateStruct.Hash = fullClientDB.TorrentHashString //needed for index
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Storage.UpdateStorageTick(db, tickUpdateStruct)
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RunningTorrentArray = append(RunningTorrentArray, *fullClientDB)
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}
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return RunningTorrentArray
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}
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//CreateFileListArray creates a file list for a single torrent that is selected and sent to the server
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func CreateFileListArray(tclient *torrent.Client, selectedHash string, db *storm.DB, config Settings.FullClientSettings) TorrentFileList {
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runningTorrents := tclient.Torrents() //don't need running torrent array since we aren't adding or deleting from storage
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torrentFileListStorage := Storage.FetchTorrentFromStorage(db, selectedHash)
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TorrentFileListSelected := TorrentFileList{}
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TorrentFileStruct := TorrentFile{}
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for _, singleTorrent := range runningTorrents {
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tempHash := singleTorrent.InfoHash().String()
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if tempHash == selectedHash { // if our selection hash equals our torrent hash
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torrentFilesRaw := singleTorrent.Files()
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Logger.WithFields(logrus.Fields{"torrentFiles": torrentFilesRaw}).Debug("Unable to close tempfile")
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for _, singleFile := range torrentFilesRaw {
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TorrentFileStruct.TorrentHashString = tempHash
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TorrentFileStruct.FileName = singleFile.DisplayPath()
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TorrentFileStruct.FilePath = singleFile.Path()
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PieceState := singleFile.State()
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var downloadedBytes int64
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for _, piece := range PieceState {
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if piece.Complete {
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downloadedBytes = downloadedBytes + piece.Bytes //adding up the bytes in the completed pieces
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}
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}
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TorrentFileStruct.FilePercent = fmt.Sprintf("%.2f", float32(downloadedBytes)/float32(singleFile.Length()))
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for i, specificFile := range torrentFileListStorage.TorrentFilePriority { //searching for that specific file in storage
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if specificFile.TorrentFilePath == singleFile.DisplayPath() {
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TorrentFileStruct.FilePriority = torrentFileListStorage.TorrentFilePriority[i].TorrentFilePriority
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}
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}
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TorrentFileStruct.FileSize = HumanizeBytes(float32(singleFile.Length()))
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TorrentFileListSelected.FileList = append(TorrentFileListSelected.FileList, TorrentFileStruct)
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}
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TorrentFileListSelected.MessageType = "torrentFileList"
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TorrentFileListSelected.TotalFiles = len(singleTorrent.Files())
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Logger.WithFields(logrus.Fields{"selectedFiles": TorrentFileListSelected}).Debug("Selected Torrent Files")
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return TorrentFileListSelected
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}
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}
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return TorrentFileListSelected
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}
|
|
|
|
//CreatePeerListArray create a list of peers for the torrent and displays them
|
|
func CreatePeerListArray(tclient *torrent.Client, selectedHash string) PeerFileList {
|
|
runningTorrents := tclient.Torrents()
|
|
TorrentPeerList := PeerFileList{}
|
|
for _, singleTorrent := range runningTorrents {
|
|
tempHash := singleTorrent.InfoHash().String()
|
|
if (strings.Compare(tempHash, selectedHash)) == 0 {
|
|
TorrentPeerList.MessageType = "torrentPeerList"
|
|
TorrentPeerList.PeerList = singleTorrent.KnownSwarm()
|
|
TorrentPeerList.TotalPeers = len(TorrentPeerList.PeerList)
|
|
return TorrentPeerList
|
|
}
|
|
}
|
|
return TorrentPeerList
|
|
}
|
|
|
|
//CreateTorrentDetailJSON creates the json response for a request for more torrent information
|
|
func CreateTorrentDetailJSON(tclient *torrent.Client, selectedHash string, torrentStorage *storm.DB) ClientDB {
|
|
|
|
localTorrentInfo := Storage.FetchTorrentFromStorage(torrentStorage, selectedHash)
|
|
|
|
runningTorrents := tclient.Torrents()
|
|
|
|
TorrentDetailStruct := ClientDB{}
|
|
for _, singleTorrent := range runningTorrents { //ranging through the running torrents to find the one we are looking for
|
|
tempHash := singleTorrent.InfoHash().String()
|
|
if tempHash == selectedHash {
|
|
Logger.WithFields(logrus.Fields{"torrentHash": tempHash, "detailedInfo": localTorrentInfo}).Info("Creating detailed torrent list")
|
|
return TorrentDetailStruct
|
|
}
|
|
}
|
|
return TorrentDetailStruct
|
|
}
|