// Save saves state to the given writer.
// This state can be fed to Load() in a new instance of the server.
// At present, saved state is all global metadata.
func Save(raw io.Writer) (err error) {
// Get encoder.
w := json.NewEncoder(raw)
// Write version.
version := struct{ Version string }{Version: "1"}
if err = w.Encode(version); err != nil {
return
}
// Write state.
core.Sync(nil, nil, func(hook bool) {
if hook {
return
}
core.Global.DataRange("", func(name, value string) {
if err != nil {
return
}
var data struct{ Name, Value string }
data.Name = name
data.Value = value
err = w.Encode(data)
})
})
return
}
// Burst to a locally linked server.
func link_burst(l *local) {
core.Sync(
func(u *core.User, hook bool) {
if !hook {
send_uid(l, u)
}
},
func(ch *core.Channel, hook bool) {
b := bytes.NewBuffer(make([]byte, 0, 512))
user := bytes.NewBuffer(make([]byte, 0, 50))
if !hook {
it := ch.Users()
for {
fmt.Fprintf(b, "SJOIN %d #%s +n :", 0, ch.Name())
for ; it != nil; it = it.ChanNext() {
user.WriteString(it.User().ID())
user.Write([]byte(" "))
if b.Len()+user.Len() > 509 {
break
}
user.WriteTo(b)
user.Reset()
}
b.Write([]byte("\r\n"))
b.WriteTo(l)
b.Reset()
if it == nil {
break
}
}
}
},
func(hook bool) {
// We currently *assume* this is called after all the other
// hooks.
if !hook {
l.burst_sent = true
}
})
}