torrent stats

src/host/torrent/stats.go

@@ -44,7 +44,7 @@ func (a byName) Len() int           { return len(a) }
 func (a byName) Swap(i, j int)      { a[i], a[j] = a[j], a[i] }
 func (a byName) Less(i, j int) bool { return a[i].Name < a[j].Name }
 
-type GlobalTorrentStats struct {
+type TotalTorrentStats struct {
 	DownloadedBytes int64   `json:"downloadedBytes"`
 	UploadedBytes   int64   `json:"uploadedBytes"`
 	TimePassed      float64 `json:"timePassed"`
@@ -117,7 +117,7 @@ func (s *Stats) Stats(path string) (*TorrentStats, error) {
 	return s.stats(now, t, true), nil
 }
 
-func (s *Stats) GlobalStats() *GlobalTorrentStats {
+func (s *Stats) GlobalStats() *TotalTorrentStats {
 	s.mut.Lock()
 	defer s.mut.Unlock()
 
@@ -134,7 +134,7 @@ func (s *Stats) GlobalStats() *GlobalTorrentStats {
 	timePassed := now.Sub(s.gTime)
 	s.gTime = now
 
-	return &GlobalTorrentStats{
+	return &TotalTorrentStats{
 		DownloadedBytes: totalDownload,
 		UploadedBytes:   totalUpload,
 		TimePassed:      timePassed.Seconds(),

src/host/torrent/stats_store.go

@@ -8,21 +8,9 @@ import (
 
 	"github.com/anacrolix/torrent/types/infohash"
 	"github.com/dgraph-io/badger/v4"
-	"github.com/dgraph-io/ristretto/z"
+	"golang.org/x/exp/maps"
 )
 
-type TorrentStat struct {
-	Name            string        `json:"name"`
-	Hash            string        `json:"hash"`
-	DownloadedBytes int64         `json:"downloadedBytes"`
-	UploadedBytes   int64         `json:"uploadedBytes"`
-	Peers           int           `json:"peers"`
-	Seeders         int           `json:"seeders"`
-	PieceChunks     []*PieceChunk `json:"pieceChunks"`
-	TotalPieces     int           `json:"totalPieces"`
-	PieceSize       int64         `json:"pieceSize"`
-}
-
 func newStatsStore(metaDir string, lifetime time.Duration) (*statsStore, error) {
 	db, err := badger.OpenManaged(
 		badger.
@@ -38,49 +26,100 @@ func newStatsStore(metaDir string, lifetime time.Duration) (*statsStore, error)
 			db.SetDiscardTs(uint64(n.Add(-lifetime).Unix()))
 		}
 	}()
-	r := &statsStore{
+	return &statsStore{
 		db: db,
-	}
-
-	return r, nil
+	}, nil
 }
 
 type statsStore struct {
 	db *badger.DB
 }
 
-func (r *statsStore) AddStat(ih infohash.T, stat TorrentStat) error {
+func (r *statsStore) AddStat(ih infohash.T, t time.Time, stat TorrentStats) error {
 	data, err := json.Marshal(stat)
 	if err != nil {
 		return err
 	}
+	ts := uint64(t.Unix())
 
-	return r.db.Update(func(txn *badger.Txn) error {
-		return txn.Set(ih.Bytes(), data)
-	})
-}
+	txn := r.db.NewTransactionAt(ts, false)
+	defer txn.Discard()
 
-func (r *statsStore) ReadStatsHistory(ctx context.Context, since time.Time) (GlobalTorrentStats, error) {
-	var stats GlobalTorrentStats
-	stream := r.db.NewStream()
-	stream.SinceTs = uint64(since.Unix())
-
-	var tstat TorrentStat
-	stream.Send = func(buf *z.Buffer) error {
-		err := json.Unmarshal(buf.Bytes(), &tstat)
+	err = txn.Set(ih.Bytes(), data)
 	if err != nil {
 		return err
 	}
 
-		stats.DownloadedBytes += tstat.DownloadedBytes
-		stats.UploadedBytes += tstat.UploadedBytes
-
-		return nil
+	return txn.CommitAt(ts, nil)
 }
 
-	err := stream.Orchestrate(ctx)
+func (r *statsStore) ReadTotalStatsHistory(ctx context.Context, since time.Time) ([]TotalTorrentStats, error) {
+	stats := map[time.Time]TotalTorrentStats{}
+
+	err := r.db.View(func(txn *badger.Txn) error {
+		opts := badger.DefaultIteratorOptions
+		opts.AllVersions = true
+		opts.SinceTs = uint64(since.Unix())
+
+		it := txn.NewIterator(opts)
+		defer it.Close()
+		for it.Rewind(); it.Valid(); it.Next() {
+			item := it.Item()
+			// k := item.Key()
+			var tstat TorrentStats
+			err := item.Value(func(v []byte) error {
+				return json.Unmarshal(v, &tstat)
+			})
 			if err != nil {
-		return stats, err
+				return err
 			}
-	return stats, nil
+
+			t := time.Unix(int64(item.Version()), 0)
+
+			if stat, ok := stats[t]; !ok {
+				stats[t] = TotalTorrentStats{
+					DownloadedBytes: tstat.DownloadedBytes,
+					UploadedBytes:   stat.DownloadedBytes,
+				}
+			} else {
+				stat.DownloadedBytes += tstat.DownloadedBytes
+				stat.UploadedBytes += tstat.UploadedBytes
+				stats[t] = stat
+			}
+
+		}
+		return nil
+	})
+
+	return maps.Values(stats), err
+}
+
+func (r *statsStore) ReadStatsHistory(ctx context.Context, since time.Time, ih infohash.T) ([]TorrentStats, error) {
+	var stats map[time.Time]TorrentStats
+
+	err := r.db.View(func(txn *badger.Txn) error {
+		opts := badger.DefaultIteratorOptions
+		opts.AllVersions = true
+		opts.SinceTs = uint64(since.Unix())
+
+		it := txn.NewKeyIterator(ih.Bytes(), opts)
+		defer it.Close()
+		for it.Rewind(); it.Valid(); it.Next() {
+			item := it.Item()
+			var tstat TorrentStats
+			err := item.Value(func(v []byte) error {
+				return json.Unmarshal(v, &tstat)
+			})
+			if err != nil {
+				return err
+			}
+
+			t := time.Unix(int64(item.Version()), 0)
+
+			stats[t] = tstat
+		}
+		return nil
+	})
+
+	return maps.Values(stats), err
 }