/
conn_mgr.go
172 lines (151 loc) · 3.46 KB
/
conn_mgr.go
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package server
import (
"context"
"github.com/kercylan98/minotaur/utils/collection"
"sync"
)
type connMgr struct {
connections map[string]*Conn // 所有连接
register chan *Conn // 注册连接
unregister chan string // 注销连接
broadcast chan hubBroadcast // 广播消息
botCount int // 机器人数量
onlineCount int // 在线人数
chanMutex sync.RWMutex // 避免外界函数导致的并发问题
closed bool
}
type hubBroadcast struct {
packet []byte // 广播的数据包
filter func(conn *Conn) bool // 过滤掉返回 false 的连接
}
func (h *connMgr) run(ctx context.Context) {
h.connections = make(map[string]*Conn)
h.register = make(chan *Conn, DefaultConnHubBufferSize)
h.unregister = make(chan string, DefaultConnHubBufferSize)
h.broadcast = make(chan hubBroadcast, DefaultConnHubBufferSize)
go func(ctx context.Context, h *connMgr) {
for {
select {
case conn := <-h.register:
h.onRegister(conn)
case id := <-h.unregister:
h.onUnregister(id)
case packet := <-h.broadcast:
h.onBroadcast(packet)
case <-ctx.Done():
h.chanMutex.Lock()
close(h.register)
close(h.unregister)
h.closed = true
h.chanMutex.Unlock()
return
}
}
}(ctx, h)
}
// registerConn 注册连接
func (h *connMgr) registerConn(conn *Conn) {
select {
case h.register <- conn:
default:
h.onRegister(conn)
}
}
// unregisterConn 注销连接
func (h *connMgr) unregisterConn(id string) {
select {
case h.unregister <- id:
default:
h.onUnregister(id)
}
}
// GetOnlineCount 获取在线人数
func (h *connMgr) GetOnlineCount() int {
h.chanMutex.RLock()
defer h.chanMutex.RUnlock()
return h.onlineCount
}
// GetOnlineBotCount 获取在线机器人数量
func (h *connMgr) GetOnlineBotCount() int {
h.chanMutex.RLock()
defer h.chanMutex.RUnlock()
return h.botCount
}
// IsOnline 是否在线
func (h *connMgr) IsOnline(id string) bool {
h.chanMutex.RLock()
_, exist := h.connections[id]
h.chanMutex.RUnlock()
return exist
}
// GetOnlineAll 获取所有在线连接
func (h *connMgr) GetOnlineAll() map[string]*Conn {
h.chanMutex.RLock()
cop := collection.CloneMap(h.connections)
h.chanMutex.RUnlock()
return cop
}
// GetOnline 获取在线连接
func (h *connMgr) GetOnline(id string) *Conn {
h.chanMutex.RLock()
conn := h.connections[id]
h.chanMutex.RUnlock()
return conn
}
// CloseConn 关闭连接
func (h *connMgr) CloseConn(id string) {
h.chanMutex.RLock()
conn := h.connections[id]
h.chanMutex.RUnlock()
if conn != nil {
conn.Close()
}
}
// Broadcast 广播消息
func (h *connMgr) Broadcast(packet []byte, filter ...func(conn *Conn) bool) {
m := hubBroadcast{
packet: packet,
}
if len(filter) > 0 {
m.filter = filter[0]
}
select {
case h.broadcast <- m:
default:
h.onBroadcast(m)
}
}
func (h *connMgr) onRegister(conn *Conn) {
h.chanMutex.Lock()
if h.closed {
conn.Close()
return
}
h.connections[conn.GetID()] = conn
h.onlineCount++
if conn.IsBot() {
h.botCount++
}
h.chanMutex.Unlock()
}
func (h *connMgr) onUnregister(id string) {
h.chanMutex.Lock()
if conn, ok := h.connections[id]; ok {
h.onlineCount--
delete(h.connections, conn.GetID())
if conn.IsBot() {
h.botCount--
}
}
h.chanMutex.Unlock()
}
func (h *connMgr) onBroadcast(packet hubBroadcast) {
h.chanMutex.RLock()
defer h.chanMutex.RUnlock()
for _, conn := range h.connections {
if packet.filter != nil && !packet.filter(conn) {
continue
}
conn.Write(packet.packet)
}
}