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package hub
import (
"globster/adc"
"go.blicky.net/tanja"
"net"
"time"
)
// TODO: Do the connect() and write()s in a separate goroutine.
type hub struct {
name string
ses *tanja.Session
conn net.Conn
}
func newHub(node *tanja.Node, name string) *hub {
s := &hub{name: name, ses: node.Session()}
s.ses.RegRPC(s, func(s string) tanja.Tuple {
if s[0] != 'T' {
return nil
}
return tanja.Tup("hub", name, s[1:])
})
s.ses.Send(false, "hub", name, "Created")
go s.ses.Run()
return s
}
func (s *hub) Texists(m *tanja.Message) {
m.Reply(s.name)
m.Close()
}
func (s *hub) Tconnect(addr string) {
if s.conn != nil {
return
}
var e error
s.conn, e = net.DialTimeout("tcp", addr, 30*time.Second)
if e != nil {
s.ses.Send(false, "hub", s.name, "Disconnected", e.Error())
} else {
s.ses.Send(false, "hub", s.name, "Connected", s.conn.RemoteAddr().String())
adc.NewWriter(s.conn).Write(&adc.Message{Header: adc.SUP.SetType('I')})
}
}
func (s *hub) Tdisconnect(m *tanja.Message, r ...tanja.Element) {
if s.conn != nil {
s.conn.Close()
s.conn = nil
s.ses.Sendt(false, append(tanja.Tup("hub", s.name, "Disconnected"), r...))
}
// Only close the return-path after disconnect, to allow users to wait for
// successful disconnect.
m.Close()
}
func (s *hub) close() {
r := s.ses.Send(true, "hub", s.name, "disconnect")
<-r.Chan()
r.Close()
s.ses.Close()
s.ses.Send(false, "hub", s.name, "Closed")
}
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