/
pusher.go
79 lines (63 loc) · 1.63 KB
/
pusher.go
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// Copyright 2017 Axel Etcheverry. All rights reserved.
// Use of this source code is governed by a MIT
// license that can be found in the LICENSE file.
package pusher
import (
"net/http"
"github.com/gorilla/websocket"
"github.com/rs/xlog"
)
// ErrorHandler func
type ErrorHandler func(w http.ResponseWriter, code int, err error)
// Pusher struct
type Pusher struct {
upgrader websocket.Upgrader
ErrorHandler ErrorHandler
clients *ClientManager
channels *ChannelManager
}
// NewPusher server
func NewPusher(config Configuration) *Pusher {
return &Pusher{
upgrader: websocket.Upgrader{
ReadBufferSize: 1024,
WriteBufferSize: 1024,
CheckOrigin: func(r *http.Request) bool {
return true
},
},
ErrorHandler: func(w http.ResponseWriter, code int, err error) {
xlog.Error(err)
http.Error(w, err.Error(), code)
},
clients: NewClientManager(),
channels: NewChannelManager(),
}
}
// JoinChannel added client to channel
func (p *Pusher) JoinChannel(ID string, client *Client) {
// get or create channel
channel, ok := p.channels.Get(ID)
if ok == false {
channel = NewChannel(ID)
p.channels.Add(channel)
}
channel.Join(client)
}
// LeaveChannel removed client to channel
func (p *Pusher) LeaveChannel(ID string, client *Client) {
if channel, ok := p.channels.Get(ID); ok {
channel.Leave(client)
}
}
// ServeHTTP handler
func (p *Pusher) ServeHTTP(w http.ResponseWriter, r *http.Request) {
ws, err := p.upgrader.Upgrade(w, r, nil)
if err != nil {
p.ErrorHandler(w, http.StatusInternalServerError, err)
return
}
client := NewClient(ws, p)
p.clients.Add(client)
client.Listen()
}