mirror of
https://github.com/longsleep/realtimetraffic.git
synced 2024-11-16 08:48:33 +01:00
71 lines
1.7 KiB
Go
71 lines
1.7 KiB
Go
/*
|
|
* Copyright (C) 2014-2017 struktur AG
|
|
* http://www.strukturag.com
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
package main
|
|
|
|
type hub struct {
|
|
grabbers map[string]*grabber
|
|
connections map[*connection]bool
|
|
broadcast chan *interfacedata
|
|
register chan *connection
|
|
unregister chan *connection
|
|
}
|
|
|
|
var h = hub{
|
|
broadcast: make(chan *interfacedata),
|
|
register: make(chan *connection),
|
|
unregister: make(chan *connection),
|
|
connections: make(map[*connection]bool),
|
|
grabbers: make(map[string]*grabber),
|
|
}
|
|
|
|
func (h *hub) run() {
|
|
|
|
var eg *grabber
|
|
var ok bool
|
|
|
|
for {
|
|
select {
|
|
case c := <-h.register:
|
|
h.connections[c] = true
|
|
if eg, ok = h.grabbers[c.iface]; !ok {
|
|
eg = newGrabber(c.iface)
|
|
h.grabbers[c.iface] = eg
|
|
}
|
|
eg.start()
|
|
case c := <-h.unregister:
|
|
delete(h.connections, c)
|
|
close(c.send)
|
|
if eg, ok = h.grabbers[c.iface]; ok {
|
|
eg.stop()
|
|
}
|
|
case d := <-h.broadcast:
|
|
for c := range h.connections {
|
|
if c.iface == d.iface {
|
|
if m, err := d.encode(); err == nil {
|
|
select {
|
|
case c.send <- m:
|
|
default:
|
|
close(c.send)
|
|
delete(h.connections, c)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|