func newTestMasterInfo(id int) []byte {
miPb := util.NewMasterInfo(fmt.Sprintf("master(%d)@localhost:5050", id), 123456789, 400)
data, err := proto.Marshal(miPb)
if err != nil {
panic(err)
}
return data
}
// Super-useful utility func that attempts to build a mesos.MasterInfo from a
// upid.UPID specification. An attempt is made to determine the IP address of
// the UPID's Host and any errors during such resolution will result in a nil
// returned result. A nil result is also returned upon errors parsing the Port
// specification of the UPID.
//
// TODO(jdef) make this a func of upid.UPID so that callers can invoke somePid.MasterInfo()?
//
func CreateMasterInfo(pid *upid.UPID) *mesos.MasterInfo {
if pid == nil {
return nil
}
port, err := strconv.Atoi(pid.Port)
if err != nil {
log.Errorf("failed to parse port: %v", err)
return nil
}
//TODO(jdef) what about (future) ipv6 support?
var ipv4 net.IP
if ipv4 = net.ParseIP(pid.Host); ipv4 != nil {
// This is needed for the people cross-compiling from macos to linux.
// The cross-compiled version of net.LookupIP() fails to handle plain IPs.
// See https://github.com/basho-labs/mesos-go/pull/117
} else if addrs, err := net.LookupIP(pid.Host); err == nil {
for _, ip := range addrs {
if ip = ip.To4(); ip != nil {
ipv4 = ip
break
}
}
if ipv4 == nil {
log.Errorf("host does not resolve to an IPv4 address: %v", pid.Host)
return nil
}
} else {
log.Errorf("failed to lookup IPs for host '%v': %v", pid.Host, err)
return nil
}
packedip := binary.BigEndian.Uint32(ipv4) // network byte order is big-endian
mi := util.NewMasterInfo(pid.ID, packedip, uint32(port))
mi.Pid = proto.String(pid.String())
if pid.Host != "" {
mi.Hostname = proto.String(pid.Host)
}
return mi
}