81 lines
2.3 KiB
Go
81 lines
2.3 KiB
Go
// package webupdates uses SocketIO to send updates to a web client.
|
|
// SPDX-License-Identifier: GPL-3.0-or-later
|
|
package webupdates
|
|
|
|
import (
|
|
gosocketio "github.com/graarh/golang-socketio"
|
|
"github.com/graarh/golang-socketio/transport"
|
|
"github.com/labstack/echo/v4"
|
|
"github.com/rs/zerolog/log"
|
|
)
|
|
|
|
type BiDirComms struct {
|
|
sockserv *gosocketio.Server
|
|
}
|
|
|
|
type Message struct {
|
|
Name string `json:"name"`
|
|
Text string `json:"text"`
|
|
}
|
|
|
|
func New() *BiDirComms {
|
|
return &BiDirComms{
|
|
sockserv: socketIOServer(),
|
|
}
|
|
}
|
|
|
|
func (b *BiDirComms) RegisterHandlers(router *echo.Echo) {
|
|
router.Any("/socket.io/", echo.WrapHandler(b.sockserv))
|
|
}
|
|
|
|
func socketIOServer() *gosocketio.Server {
|
|
sio := gosocketio.NewServer(transport.GetDefaultWebsocketTransport())
|
|
log.Info().Msg("initialising SocketIO")
|
|
|
|
var err error
|
|
|
|
// socket connection
|
|
err = sio.On(gosocketio.OnConnection, func(c *gosocketio.Channel) {
|
|
log.Debug().Str("clientID", c.Id()).Msg("socketIO: connected")
|
|
if err := c.Join("Room"); err != nil {
|
|
log.Warn().Err(err).Str("clientID", c.Id()).Msg("socketIO: unable to make client join broadcast message room")
|
|
}
|
|
})
|
|
if err != nil {
|
|
log.Error().Err(err).Msg("socketIO: unable to register OnConnection handler")
|
|
}
|
|
|
|
// socket disconnection
|
|
err = sio.On(gosocketio.OnDisconnection, func(c *gosocketio.Channel) {
|
|
log.Debug().Str("clientID", c.Id()).Msg("socketIO: disconnected")
|
|
if err := c.Leave("Room"); err != nil {
|
|
log.Warn().Err(err).Str("clientID", c.Id()).Msg("socketIO: unable to make client leave broadcast message room")
|
|
}
|
|
})
|
|
if err != nil {
|
|
log.Error().Err(err).Msg("socketIO: unable to register OnDisconnection handler")
|
|
}
|
|
|
|
err = sio.On(gosocketio.OnError, func(c *gosocketio.Channel) {
|
|
log.Warn().Interface("c", c).Msg("socketIO: socketio error")
|
|
})
|
|
if err != nil {
|
|
log.Error().Err(err).Msg("socketIO: unable to register OnError handler")
|
|
}
|
|
|
|
// chat socket
|
|
err = sio.On("/chat", func(c *gosocketio.Channel, message Message) string {
|
|
log.Info().Str("clientID", c.Id()).
|
|
Str("text", message.Text).
|
|
Str("name", message.Name).
|
|
Msg("socketIO: message received")
|
|
c.BroadcastTo("Room", "/message", message.Text)
|
|
return "message sent successfully."
|
|
})
|
|
if err != nil {
|
|
log.Error().Err(err).Msg("socketIO: unable to register /chat handler")
|
|
}
|
|
|
|
return sio
|
|
}
|