freifunkmanager/websocket/server.go

71 lines
1.4 KiB
Go

package websocket
import (
"net/http"
"sync"
runtimeYanic "github.com/FreifunkBremen/yanic/runtime"
httpLib "github.com/genofire/golang-lib/http"
"github.com/genofire/golang-lib/log"
"golang.org/x/net/websocket"
"github.com/FreifunkBremen/freifunkmanager/runtime"
)
var nodes *runtime.Nodes
var clients map[string]*Client
var clientsMutex sync.Mutex
var stats *runtimeYanic.GlobalStats
func Start(nodeBind *runtime.Nodes) {
nodes = nodeBind
clients = make(map[string]*Client)
http.Handle("/websocket", websocket.Handler(func(ws *websocket.Conn) {
r := ws.Request()
ip := httpLib.GetRemoteIP(r)
defer func() {
ws.Close()
clientsMutex.Lock()
delete(clients, ip)
clientsMutex.Unlock()
log.HTTP(r).Info("client disconnected")
}()
log.HTTP(r).Infof("new client")
client := NewClient(ip, ws)
clientsMutex.Lock()
clients[ip] = client
clientsMutex.Unlock()
client.Listen()
}))
nodes.AddNotify(NotifyNode)
}
func NotifyNode(node *runtime.Node, real bool) {
msgType := MessageTypeUpdateNode
if real {
msgType = MessageTypeCurrentNode
}
SendAll(Message{Type: msgType, Node: node})
}
func NotifyStats(data *runtimeYanic.GlobalStats) {
stats = data
SendAll(Message{Type: MessageTypeStats, Body: data})
}
func SendAll(msg Message) {
clientsMutex.Lock()
for _, c := range clients {
c.Write(&msg)
}
clientsMutex.Unlock()
}
func Close() {
log.Log.Infof("websocket stopped with %d clients", len(clients))
}