/
bucket.go
248 lines (227 loc) · 4.77 KB
/
bucket.go
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package comet
import (
"sync"
"sync/atomic"
"github.com/zqkgo/goim-enhanced/api/comet/grpc"
"github.com/zqkgo/goim-enhanced/internal/comet/conf"
)
// Bucket is a channel holder.
type Bucket struct {
c *conf.Bucket
cLock sync.RWMutex // protect the channels for chs
chs map[string]*Channel // map sub key to a channel
// room
rooms map[string]*Room // bucket room channels
routines []chan *grpc.BroadcastRoomReq
routinesNum uint64
ipCnts map[string]int32
}
// NewBucket new a bucket struct. store the key with im channel.
func NewBucket(c *conf.Bucket) (b *Bucket) {
b = new(Bucket)
b.chs = make(map[string]*Channel, c.Channel)
b.ipCnts = make(map[string]int32)
b.c = c
b.rooms = make(map[string]*Room, c.Room)
b.routines = make([]chan *grpc.BroadcastRoomReq, c.RoutineAmount)
for i := uint64(0); i < c.RoutineAmount; i++ {
c := make(chan *grpc.BroadcastRoomReq, c.RoutineSize)
b.routines[i] = c
go b.roomproc(c)
}
return
}
// ChannelCount channel count in the bucket
func (b *Bucket) ChannelCount() int {
return len(b.chs)
}
// RoomCount room count in the bucket
func (b *Bucket) RoomCount() int {
return len(b.rooms)
}
// RoomsCount get all room id where online number > 0.
func (b *Bucket) RoomsCount() (res map[string]int32) {
var (
roomID string
room *Room
)
b.cLock.RLock()
res = make(map[string]int32)
for roomID, room = range b.rooms {
if room.Online > 0 {
res[roomID] = room.Online
}
}
b.cLock.RUnlock()
return
}
// ChangeRoom change ro room
func (b *Bucket) ChangeRoom(nrid string, ch *Channel) (err error) {
var (
nroom *Room
ok bool
oroom = ch.Room
)
// change to no room
if nrid == "" {
if oroom != nil && oroom.Del(ch) {
b.DelRoom(oroom)
}
ch.Room = nil
return
}
b.cLock.Lock()
if nroom, ok = b.rooms[nrid]; !ok {
nroom = NewRoom(nrid)
b.rooms[nrid] = nroom
}
b.cLock.Unlock()
if oroom != nil && oroom.Del(ch) {
b.DelRoom(oroom)
}
if err = nroom.Put(ch); err != nil {
return
}
ch.Room = nroom
return
}
// Put put a channel according with sub key.
func (b *Bucket) Put(rid string, ch *Channel) (err error) {
var (
room *Room
ok bool
)
b.cLock.Lock()
// close old channel
if dch := b.chs[ch.Key]; dch != nil {
dch.Close()
}
b.chs[ch.Key] = ch
if rid != "" {
if room, ok = b.rooms[rid]; !ok {
room = NewRoom(rid)
b.rooms[rid] = room
}
ch.Room = room
}
b.ipCnts[ch.IP]++
b.cLock.Unlock()
if room != nil {
err = room.Put(ch)
}
return
}
// Del delete the channel by sub key.
func (b *Bucket) Del(dch *Channel) {
var (
ok bool
ch *Channel
room *Room
)
b.cLock.Lock()
if ch, ok = b.chs[dch.Key]; ok {
room = ch.Room
if ch == dch {
delete(b.chs, ch.Key)
}
// ip counter
if b.ipCnts[ch.IP] > 1 {
b.ipCnts[ch.IP]--
} else {
delete(b.ipCnts, ch.IP)
}
}
b.cLock.Unlock()
if room != nil && room.Del(ch) {
// if empty room, must delete from bucket
b.DelRoom(room)
}
}
// Channel get a channel by sub key.
func (b *Bucket) Channel(key string) (ch *Channel) {
b.cLock.RLock()
ch = b.chs[key]
b.cLock.RUnlock()
return
}
// Broadcast push msgs to all channels in the bucket.
func (b *Bucket) Broadcast(p *grpc.Proto, op int32) {
var ch *Channel
b.cLock.RLock()
for _, ch = range b.chs {
if !ch.NeedPush(op) {
continue
}
_ = ch.Push(p)
}
b.cLock.RUnlock()
}
// Room get a room by roomid.
func (b *Bucket) Room(rid string) (room *Room) {
b.cLock.RLock()
room = b.rooms[rid]
b.cLock.RUnlock()
return
}
// DelRoom delete a room by roomid.
func (b *Bucket) DelRoom(room *Room) {
b.cLock.Lock()
delete(b.rooms, room.ID)
b.cLock.Unlock()
room.Close()
}
// BroadcastRoom broadcast a message to specified room
func (b *Bucket) BroadcastRoom(arg *grpc.BroadcastRoomReq) {
num := atomic.AddUint64(&b.routinesNum, 1) % b.c.RoutineAmount
b.routines[num] <- arg
}
// Rooms get all room id where online number > 0.
func (b *Bucket) Rooms() (res map[string]struct{}) {
var (
roomID string
room *Room
)
res = make(map[string]struct{})
b.cLock.RLock()
for roomID, room = range b.rooms {
if room.Online > 0 {
res[roomID] = struct{}{}
}
}
b.cLock.RUnlock()
return
}
// IPCount get ip count.
func (b *Bucket) IPCount() (res map[string]struct{}) {
var (
ip string
)
b.cLock.RLock()
res = make(map[string]struct{}, len(b.ipCnts))
for ip = range b.ipCnts {
res[ip] = struct{}{}
}
b.cLock.RUnlock()
return
}
// UpRoomsCount update all room count
func (b *Bucket) UpRoomsCount(roomCountMap map[string]int32) {
var (
roomID string
room *Room
)
b.cLock.RLock()
for roomID, room = range b.rooms {
room.AllOnline = roomCountMap[roomID]
}
b.cLock.RUnlock()
}
// roomproc
func (b *Bucket) roomproc(c chan *grpc.BroadcastRoomReq) {
for {
arg := <-c
if room := b.Room(arg.RoomID); room != nil {
room.Push(arg.Proto)
}
}
}