initial delta support

server/announce.go

@@ -13,6 +13,7 @@ import (
 	"time"
 
 	"github.com/chihaya/chihaya/storage"
+	"github.com/chihaya/chihaya/storage/backend"
 )
 
 func (s Server) serveAnnounce(w http.ResponseWriter, r *http.Request) {
@@ -24,7 +25,7 @@ func (s Server) serveAnnounce(w http.ResponseWriter, r *http.Request) {
 	}
 
 	// Get a connection to the tracker db
-	conn, err := s.dbConnPool.Get()
+	conn, err := s.trackerPool.Get()
 	if err != nil {
 		log.Panicf("server: %s", err)
 	}
@@ -65,6 +66,7 @@ func (s Server) serveAnnounce(w http.ResponseWriter, r *http.Request) {
 		}
 	}
 
+	now := time.Now().Unix()
 	// Create a new peer object from the request
 	peer := &storage.Peer{
 		ID:           peerID,
@@ -75,7 +77,14 @@ func (s Server) serveAnnounce(w http.ResponseWriter, r *http.Request) {
 		Uploaded:     uploaded,
 		Downloaded:   downloaded,
 		Left:         left,
-		LastAnnounce: time.Now().Unix(),
+		LastAnnounce: now,
+	}
+
+	delta := &backend.AnnounceDelta{
+		Peer:      peer,
+		Torrent:   torrent,
+		User:      user,
+		Timestamp: now,
 	}
 
 	// Look for the user in in the pool of seeders and leechers
@@ -126,6 +135,7 @@ func (s Server) serveAnnounce(w http.ResponseWriter, r *http.Request) {
 				log.Panicf("server: %s", err)
 			}
 		}
+		delta.Created = true
 	}
 
 	// Handle any events in the request
@@ -149,6 +159,7 @@ func (s Server) serveAnnounce(w http.ResponseWriter, r *http.Request) {
 		if err != nil {
 			log.Panicf("server: %s", err)
 		}
+		delta.Snatched = true
 		if leecher {
 			err := conn.LeecherFinished(torrent, peer)
 			if err != nil {
@@ -217,6 +228,22 @@ func (s Server) serveAnnounce(w http.ResponseWriter, r *http.Request) {
 		}
 	}
 	writeBencoded(w, "e")
+
+	rawDeltaUp := peer.Uploaded - uploaded
+	rawDeltaDown := peer.Downloaded - downloaded
+
+	// Restarting a torrent may cause a delta to be negative.
+	if rawDeltaUp < 0 {
+		rawDeltaUp = 0
+	}
+	if rawDeltaDown < 0 {
+		rawDeltaDown = 0
+	}
+
+	delta.Uploaded = uint64(float64(rawDeltaUp) * user.UpMultiplier * torrent.UpMultiplier)
+	delta.Downloaded = uint64(float64(rawDeltaDown) * user.DownMultiplier * torrent.DownMultiplier)
+
+	s.backendCon.RecordAnnounce(delta)
 }
 
 func (s Server) validateAnnounceQuery(r *http.Request) (compact bool, numWant int, infohash, peerID, event, ip string, port, uploaded, downloaded, left uint64, err error) {

server/scrape.go

@@ -23,7 +23,7 @@ func (s *Server) serveScrape(w http.ResponseWriter, r *http.Request) {
 	}
 
 	// Get a connection to the tracker db
-	conn, err := s.dbConnPool.Get()
+	conn, err := s.trackerPool.Get()
 	if err != nil {
 		log.Fatal(err)
 	}

server/server.go

@@ -20,13 +20,15 @@ import (
 
 	"github.com/chihaya/chihaya/config"
 	"github.com/chihaya/chihaya/storage"
+	"github.com/chihaya/chihaya/storage/backend"
 	"github.com/chihaya/chihaya/storage/tracker"
 )
 
 type Server struct {
 	conf        *config.Config
 	listener    *stoppableListener.StoppableListener
-	dbConnPool tracker.Pool
+	trackerPool tracker.Pool
+	backendCon  backend.Conn
 
 	startTime time.Time
 
@@ -37,14 +39,23 @@ type Server struct {
 }
 
 func New(conf *config.Config) (*Server, error) {
-	pool, err := tracker.Open(&conf.Tracker)
+	trackerPool, err := tracker.Open(&conf.Tracker)
+	if err != nil {
+		return nil, err
+	}
+	backendConn, err := backend.Open(&conf.Backend)
+	if err != nil {
+		return nil, err
+	}
+	err = backendConn.Start()
 	if err != nil {
 		return nil, err
 	}
 
 	s := &Server{
 		conf:        conf,
-		dbConnPool: pool,
+		trackerPool: trackerPool,
+		backendCon:  backendConn,
 		Server: http.Server{
 			Addr:        conf.Addr,
 			ReadTimeout: conf.ReadTimeout.Duration,
@@ -72,7 +83,7 @@ func (s *Server) ListenAndServe() error {
 
 func (s *Server) Stop() error {
 	s.listener.Stop <- true
-	err := s.dbConnPool.Close()
+	err := s.trackerPool.Close()
 	if err != nil {
 		return err
 	}

storage/backend/backend.go

@@ -91,7 +91,7 @@ type AnnounceDelta struct {
 	Downloaded uint64
 
 	// Timestamp is the unix timestamp this announce occurred at
-	Timestamp float64
+	Timestamp int64
 
 	// Snatched is true if this announce completed the download
 	Snatched bool

storage/backend/mock/driver.go

@@ -9,15 +9,46 @@ package mock
 
 import (
 	"github.com/chihaya/chihaya/config"
+	"github.com/chihaya/chihaya/storage"
 	"github.com/chihaya/chihaya/storage/backend"
 )
 
 type driver struct{}
 
+type mock struct{}
+
 func (d *driver) New(conf *config.DataStore) backend.Conn {
+	return &mock{}
+}
+
+func (m *mock) Start() error {
 	return nil
 }
 
+func (m *mock) Close() error {
+	return nil
+}
+
+func (m *mock) RecordAnnounce(delta *backend.AnnounceDelta) error {
+	return nil
+}
+
+func (m *mock) LoadTorrents(ids []uint64) ([]*storage.Torrent, error) {
+	return nil, nil
+}
+
+func (m *mock) LoadAllTorrents() ([]*storage.Torrent, error) {
+	return nil, nil
+}
+
+func (m *mock) LoadUsers(ids []uint64) ([]*storage.User, error) {
+	return nil, nil
+}
+
+func (m *mock) LoadAllUsers(ids []uint64) ([]*storage.User, error) {
+	return nil, nil
+}
+
 func init() {
 	backend.Register("mock", &driver{})
 }