/*
Register a monitoring callback.
See: http://api.zeromq.org/3-2:zmq-socket-monitor#toc2
Example:
package main
import (
zmq "github.com/pebbe/zmq3"
"log"
"time"
)
func rep_socket_monitor(addr string) {
s, err := zmq.NewSocket(zmq.PAIR)
if err != nil {
log.Fatalln(err)
}
err = s.Connect(addr)
if err != nil {
log.Fatalln(err)
}
for {
a, b, c, err := s.RecvEvent(0)
if err != nil {
log.Println(err)
break
}
log.Println(a, b, c)
}
}
func main() {
// REP socket
rep, err := zmq.NewSocket(zmq.REP)
if err != nil {
log.Fatalln(err)
}
defer rep.Close()
// REP socket monitor, all events
err = rep.Monitor("inproc://monitor.rep", zmq.EVENT_ALL)
if err != nil {
log.Fatalln(err)
}
go rep_socket_monitor("inproc://monitor.rep")
// Generate an event
rep.Bind("tcp://*:5555")
if err != nil {
log.Fatalln(err)
}
// Allow some time for event detection
time.Sleep(time.Second)
}
*/
func (soc *Socket) Monitor(addr string, events Event) error {
s := C.CString(addr)
defer C.free(unsafe.Pointer(s))
if i, err := C.zmq_socket_monitor(soc.soc, s, C.int(events)); i != 0 {
return errget(err)
}
return nil
}
/*
Register a monitoring callback.
See: http://api.zeromq.org/4-1:zmq-socket-monitor#toc2
WARNING: Closing a context with a monitoring callback will lead to random crashes.
This is a bug in the ZeroMQ library.
The monitoring callback has the same context as the socket it was created for.
Example:
package main
import (
zmq "github.com/pebbe/zmq4"
"log"
"time"
)
func rep_socket_monitor(addr string) {
s, err := zmq.NewSocket(zmq.PAIR)
if err != nil {
log.Fatalln(err)
}
err = s.Connect(addr)
if err != nil {
log.Fatalln(err)
}
for {
a, b, c, err := s.RecvEvent(0)
if err != nil {
log.Println(err)
break
}
log.Println(a, b, c)
}
s.Close()
}
func main() {
// REP socket
rep, err := zmq.NewSocket(zmq.REP)
if err != nil {
log.Fatalln(err)
}
// REP socket monitor, all events
err = rep.Monitor("inproc://monitor.rep", zmq.EVENT_ALL)
if err != nil {
log.Fatalln(err)
}
go rep_socket_monitor("inproc://monitor.rep")
// Generate an event
rep.Bind("tcp://*:5555")
if err != nil {
log.Fatalln(err)
}
// Allow some time for event detection
time.Sleep(time.Second)
rep.Close()
zmq.Term()
}
*/
func (soc *Socket) Monitor(addr string, events Event) error {
if !soc.opened {
return ErrorSocketClosed
}
if addr == "" {
if i, err := C.zmq_socket_monitor(soc.soc, nil, C.int(events)); i != 0 {
return errget(err)
}
return nil
}
s := C.CString(addr)
defer C.free(unsafe.Pointer(s))
if i, err := C.zmq_socket_monitor(soc.soc, s, C.int(events)); i != 0 {
return errget(err)
}
return nil
}
// Register a monitoring callback endpoint.
// int zmq_socket_monitor (void *s, const char *addr, int events);
func (s *Socket) Monitor(address string, events Event) error {
a := C.CString(address)
defer C.free(unsafe.Pointer(a))
rc, err := C.zmq_socket_monitor(s.apiSocket(), a, C.int(events))
if rc == -1 {
return casterr(err)
}
return nil
}
