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// hub.go
package main
import "sync"
type Hub struct {
mu sync.RWMutex
clients map[*Client]bool
byServer map[string]map[*Client]bool
tokens map[string]*TokenConfig
events []Event
nextEventID int64
maxEvents int
}
func NewHub(tokens map[string]*TokenConfig) *Hub {
return &Hub{
clients: make(map[*Client]bool),
byServer: make(map[string]map[*Client]bool),
tokens: tokens,
events: make([]Event, 0, 1024),
nextEventID: 1,
maxEvents: 1024,
}
}
func (h *Hub) register(c *Client) {
h.mu.Lock()
defer h.mu.Unlock()
h.clients[c] = true
if _, ok := h.byServer[c.serverID]; !ok {
h.byServer[c.serverID] = make(map[*Client]bool)
}
h.byServer[c.serverID][c] = true
}
func (h *Hub) unregister(c *Client) {
h.mu.Lock()
defer h.mu.Unlock()
if _, ok := h.clients[c]; ok {
delete(h.clients, c)
}
if m, ok := h.byServer[c.serverID]; ok {
delete(m, c)
if len(m) == 0 {
delete(h.byServer, c.serverID)
}
}
close(c.send)
}
func (h *Hub) broadcastToServer(serverID string, payload []byte) {
h.mu.RLock()
defer h.mu.RUnlock()
clients := h.byServer[serverID]
for c := range clients {
select {
case c.send <- payload:
default:
// channel full -> drop client
go func(cc *Client) {
cc.conn.Close()
}(c)
}
}
}
func (h *Hub) broadcastAll(payload []byte) {
h.mu.RLock()
defer h.mu.RUnlock()
for c := range h.clients {
select {
case c.send <- payload:
default:
go func(cc *Client) {
cc.conn.Close()
}(c)
}
}
}
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