Merge branch 'gazelle-storage-driver'

cache/cache.go

@@ -15,8 +15,8 @@ import (
 )
 
 var (
-	drivers   = make(map[string]Driver)
-	ErrTxDone = errors.New("cache: Transaction has already been committed or rolled back")
+	drivers       = make(map[string]Driver)
+	ErrTxDone     = errors.New("cache: Transaction has already been committed or rolled back")
 	ErrTxConflict = errors.New("cache: Commit interrupted, update transaction and repeat")
 )
 

cache/redis/redis.go

@@ -31,7 +31,7 @@ func (d *driver) New(conf *config.DataStore) cache.Pool {
 	return &Pool{
 		conf: conf,
 		pool: redis.Pool{
-			MaxIdle:      conf.MaxIdleConn,
+			MaxIdle:      conf.MaxIdleConns,
 			IdleTimeout:  conf.IdleTimeout.Duration,
 			Dial:         makeDialFunc(conf),
 			TestOnBorrow: testOnBorrow,

cache/redis/redis_test.go

@@ -47,7 +47,7 @@ func createTestTxObj(t TestReporter) *Tx {
 	testPool := &Pool{
 		conf: conf,
 		pool: redis.Pool{
-			MaxIdle:      conf.MaxIdleConn,
+			MaxIdle:      conf.MaxIdleConns,
 			IdleTimeout:  conf.IdleTimeout.Duration,
 			Dial:         makeDialFunc(conf),
 			TestOnBorrow: testOnBorrow,

config/config.go

@@ -39,8 +39,8 @@ type DataStore struct {
 	Encoding string `json:"encoding,omitempty"`
 	Prefix   string `json:"prefix,omitempty"`
 
-	MaxIdleConn int       `json:"max_idle_conn,omitempty"`
-	IdleTimeout *Duration `json:"idle_timeout,omitempty"`
+	MaxIdleConns int       `json:"max_idle_conns,omitempty"`
+	IdleTimeout  *Duration `json:"idle_timeout,omitempty"`
 }
 
 // Config represents a configuration for a server.Server.

config/example.json

@@ -12,7 +12,7 @@
     "pass": "",
     "prefix": "test:",
 
-    "max_idle_conn": 3,
+    "max_idle_conns": 3,
     "idle_timeout": "240s"
   },
 

main.go

@@ -12,9 +12,12 @@ import (
 	"runtime"
 	"runtime/pprof"
 
-	_ "github.com/pushrax/chihaya/cache/redis"
 	"github.com/pushrax/chihaya/config"
 	"github.com/pushrax/chihaya/server"
+
+	_ "github.com/pushrax/chihaya/cache/redis"
+	_ "github.com/pushrax/chihaya/storage/batter"
+	_ "github.com/pushrax/chihaya/storage/gazelle"
 )
 
 var (

models/models.go

@@ -5,11 +5,13 @@
 package models
 
 type Peer struct {
-	ID           string `json:"id"`
-	UserID       uint64 `json:"user_id"`
-	TorrentID    uint64 `json:"torrent_id"`
-	IP           string `json:"ip"`
-	Port         uint64 `json:"port"`
+	ID        string `json:"id"`
+	UserID    uint64 `json:"user_id"`
+	TorrentID uint64 `json:"torrent_id"`
+
+	IP   string `json:"ip"`
+	Port uint64 `json:"port"`
+
 	Uploaded     uint64 `json:"uploaded"`
 	Downloaded   uint64 `json:"downloaded`
 	Left         uint64 `json:"left"`
@@ -17,20 +19,23 @@ type Peer struct {
 }
 
 type Torrent struct {
-	ID             uint64          `json:"id"`
-	Infohash       string          `json:"infohash"`
-	Active         bool            `json:"active"`
-	Seeders        map[string]Peer `json:"seeders"`
-	Leechers       map[string]Peer `json:"leechers"`
-	Snatches       uint            `json:"snatches"`
-	UpMultiplier   float64         `json:"up_multiplier"`
-	DownMultiplier float64         `json:"down_multiplier"`
-	LastAction     int64           `json:"last_action"`
+	ID       uint64 `json:"id"`
+	Infohash string `json:"infohash"`
+	Active   bool   `json:"active"`
+
+	Seeders  map[string]Peer `json:"seeders"`
+	Leechers map[string]Peer `json:"leechers"`
+
+	Snatches       uint    `json:"snatches"`
+	UpMultiplier   float64 `json:"up_multiplier"`
+	DownMultiplier float64 `json:"down_multiplier"`
+	LastAction     int64   `json:"last_action"`
 }
 
 type User struct {
-	ID             uint64  `json:"id"`
-	Passkey        string  `json:"passkey"`
+	ID      uint64 `json:"id"`
+	Passkey string `json:"passkey"`
+
 	UpMultiplier   float64 `json:"up_multiplier"`
 	DownMultiplier float64 `json:"down_multiplier"`
 	Slots          int64   `json:"slots"`

storage/batter/batter.go

@@ -11,7 +11,6 @@ import (
 	"fmt"
 
 	"github.com/pushrax/chihaya/config"
-	"github.com/pushrax/chihaya/models"
 	"github.com/pushrax/chihaya/storage"
 
 	_ "github.com/bmizerany/pq"
@@ -32,6 +31,11 @@ func (d *driver) New(conf *config.DataStore) storage.Conn {
 	if err != nil {
 		panic("batter: failed to open connection to postgres")
 	}
+
+	if conf.MaxIdleConns != 0 {
+		db.SetMaxIdleConns(conf.MaxIdleConns)
+	}
+
 	return &Conn{db}
 }
 
@@ -39,11 +43,11 @@ type Conn struct {
 	*sql.DB
 }
 
-func (c *Conn) UpdateTorrents(t []models.Torrent) error {
+func (c *Conn) Start() error {
 	return nil
 }
 
-func (c *Conn) UpdateUsers(u []models.User) error {
+func (c *Conn) RecordAnnounce(delta *storage.AnnounceDelta) error {
 	return nil
 }
 

storage/batter/load.go

@@ -0,0 +1,25 @@
+// Copyright 2013 The Chihaya Authors. All rights reserved.
+// Use of this source code is governed by the BSD 2-Clause license,
+// which can be found in the LICENSE file.
+
+package batter
+
+import (
+	"github.com/pushrax/chihaya/models"
+)
+
+func (c *Conn) LoadTorrents(ids []uint64) ([]*models.Torrent, error) {
+	return nil, nil
+}
+
+func (c *Conn) LoadAllTorrents() ([]*models.Torrent, error) {
+	return nil, nil
+}
+
+func (c *Conn) LoadUsers(ids []uint64) ([]*models.User, error) {
+	return nil, nil
+}
+
+func (c *Conn) LoadAllUsers(ids []uint64) ([]*models.User, error) {
+	return nil, nil
+}

storage/gazelle/flush.go

@@ -0,0 +1,62 @@
+// Copyright 2013 The Chihaya Authors. All rights reserved.
+// Use of this source code is governed by the BSD 2-Clause license,
+// which can be found in the LICENSE file.
+
+package gazelle
+
+import (
+	"bytes"
+	"log"
+	"time"
+)
+
+func (c *Conn) flushTorrents() {
+	var query bytes.Buffer
+	c.waitGroup.Add(1)
+	defer c.waitGroup.Done()
+	var count int
+
+	for {
+		length := len(c.torrentChannel)
+		query.Reset()
+
+		query.WriteString("INSERT INTO torrents (ID, Snatched, Seeders, Leechers, last_action) VALUES\n")
+
+		for count = 0; count < length; count++ {
+			s := <-c.torrentChannel
+			if s == "" {
+				break
+			}
+			query.WriteString(s)
+
+			if count != length-1 {
+				query.WriteRune(',')
+			}
+		}
+
+		if !c.terminate {
+			log.Printf("[torrents] Flushing %d\n", count)
+		}
+
+		if count > 0 {
+			query.WriteString("\nON DUPLICATE KEY UPDATE Snatched = Snatched + VALUES(Snatched), " +
+				"Seeders = VALUES(Seeders), Leechers = VALUES(Leechers), " +
+				"last_action = IF(last_action < VALUES(last_action), VALUES(last_action), last_action);")
+
+			c.Exec(query.String())
+
+			if length < cap(c.torrentChannel)/2 {
+				time.Sleep(200 * time.Millisecond)
+			}
+		} else if c.terminate {
+			break
+		} else {
+			time.Sleep(time.Second)
+		}
+	}
+}
+
+func (c *Conn) flushUsers()           {}
+func (c *Conn) flushTransferHistory() {}
+func (c *Conn) flushTransferIps()     {}
+func (c *Conn) flushSnatches()        {}

storage/gazelle/gazelle.go

@@ -0,0 +1,99 @@
+// Copyright 2013 The Chihaya Authors. All rights reserved.
+// Use of this source code is governed by the BSD 2-Clause license,
+// which can be found in the LICENSE file.
+
+// Package gazelle provides a driver for a BitTorrent tracker to interface
+// with the MySQL database used by Gazelle (github.com/WhatCD/Gazelle).
+package gazelle
+
+import (
+	"database/sql"
+	"fmt"
+	"sync"
+
+	"github.com/pushrax/chihaya/config"
+	"github.com/pushrax/chihaya/storage"
+
+	_ "github.com/go-sql-driver/mysql"
+)
+
+type driver struct{}
+
+func (d *driver) New(conf *config.DataStore) storage.Conn {
+	dsn := fmt.Sprintf(
+		"%s:%s@%s:%s/%s?charset=utf8mb4,utf8",
+		conf.Username,
+		conf.Password,
+		conf.Host,
+		conf.Port,
+		conf.Schema,
+	)
+	db, err := sql.Open("mysql", dsn)
+	if err != nil {
+		panic("gazelle: failed to open connection to MySQL")
+	}
+
+	if conf.MaxIdleConns != 0 {
+		db.SetMaxIdleConns(conf.MaxIdleConns)
+	}
+
+	conn := &Conn{DB: db}
+
+	// TODO Buffer sizes
+	conn.torrentChannel = make(chan string, 1000)
+	conn.userChannel = make(chan string, 1000)
+	conn.transferHistoryChannel = make(chan string, 1000)
+	conn.transferIpsChannel = make(chan string, 1000)
+	conn.snatchChannel = make(chan string, 100)
+
+	return conn
+}
+
+type Conn struct {
+	waitGroup sync.WaitGroup
+	terminate bool
+
+	torrentChannel         chan string
+	userChannel            chan string
+	transferHistoryChannel chan string
+	transferIpsChannel     chan string
+	snatchChannel          chan string
+
+	*sql.DB
+}
+
+func (c *Conn) Start() error {
+	go c.flushTorrents()
+	go c.flushUsers()
+	go c.flushTransferHistory()
+	go c.flushTransferIps()
+	go c.flushSnatches()
+	return nil
+}
+
+func (c *Conn) Close() error {
+	c.terminate = true
+	c.waitGroup.Wait()
+	return c.DB.Close()
+}
+
+func (c *Conn) RecordAnnounce(delta *storage.AnnounceDelta) error {
+	snatchCount := 0
+	if delta.Snatched {
+		snatchCount = 1
+	}
+
+	c.torrentChannel <- fmt.Sprintf(
+		"('%d','%d','%d','%d','%d')",
+		delta.Torrent.ID,
+		snatchCount,
+		len(delta.Torrent.Seeders),
+		len(delta.Torrent.Leechers),
+		delta.Torrent.LastAction,
+	)
+	return nil
+}
+
+func init() {
+	storage.Register("gazelle", &driver{})
+}

storage/gazelle/load.go

@@ -0,0 +1,25 @@
+// Copyright 2013 The Chihaya Authors. All rights reserved.
+// Use of this source code is governed by the BSD 2-Clause license,
+// which can be found in the LICENSE file.
+
+package gazelle
+
+import (
+	"github.com/pushrax/chihaya/models"
+)
+
+func (c *Conn) LoadTorrents(ids []uint64) ([]*models.Torrent, error) {
+	return nil, nil
+}
+
+func (c *Conn) LoadAllTorrents() ([]*models.Torrent, error) {
+	return nil, nil
+}
+
+func (c *Conn) LoadUsers(ids []uint64) ([]*models.User, error) {
+	return nil, nil
+}
+
+func (c *Conn) LoadAllUsers(ids []uint64) ([]*models.User, error) {
+	return nil, nil
+}

storage/storage.go

@@ -13,9 +13,7 @@ import (
 	"github.com/pushrax/chihaya/models"
 )
 
-var (
-	drivers = make(map[string]Driver)
-)
+var drivers = make(map[string]Driver)
 
 type Driver interface {
 	New(*config.DataStore) Conn
@@ -49,7 +47,51 @@ func Open(conf *config.DataStore) (Conn, error) {
 
 // Conn represents a connection to the data store.
 type Conn interface {
+	// Start is called once when the server starts.
+	// It starts any necessary goroutines a given driver requires, and sets
+	// up the driver's initial state
+	Start() error
+
+	// Close terminates connections to the database(s) and gracefully shuts
+	// down the driver
 	Close() error
-	UpdateTorrents(t []models.Torrent) error
-	UpdateUsers(u []models.User) error
+
+	// RecordAnnounce is called once per announce, and is passed the delta in
+	// statistics for the client peer since its last announce.
+	RecordAnnounce(delta *AnnounceDelta) error
+
+	// LoadTorrents fetches and returns the specified torrents.
+	LoadTorrents(ids []uint64) ([]*models.Torrent, error)
+
+	// LoadAllTorrents fetches and returns all torrents.
+	LoadAllTorrents() ([]*models.Torrent, error)
+
+	// LoadUsers fetches and returns the specified users.
+	LoadUsers(ids []uint64) ([]*models.User, error)
+
+	// LoadAllUsers fetches and returns all users.
+	LoadAllUsers(ids []uint64) ([]*models.User, error)
+}
+
+// AnnounceDelta contains a difference in statistics for a peer.
+// It is used for communicating changes to be recorded by the storage driver.
+type AnnounceDelta struct {
+	Peer    *models.Peer
+	Torrent *models.Torrent
+	User    *models.User
+
+	// Created is true if this announce created a new peer or changed an existing peer's address
+	Created bool
+
+	// Uploaded contains the raw upload delta for this announce, in bytes
+	Uploaded uint64
+
+	// Downloaded contains the raw download delta for this announce, in bytes
+	Downloaded uint64
+
+	// Timestamp is the unix timestamp this announce occurred at
+	Timestamp float64
+
+	// Snatched is true if this announce completed the download
+	Snatched bool
 }