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package zipkin
import (
"net"
"strconv"
"strings"
"github.com/openzipkin/zipkin-go/model"
)
// NewEndpoint creates a new endpoint given the provided serviceName and
// hostPort.
func NewEndpoint(serviceName string, hostPort string) (*model.Endpoint, error) {
e := &model.Endpoint{
ServiceName: serviceName,
}
if hostPort == "" || hostPort == ":0" {
if serviceName == "" {
// if all properties are empty we should not have an Endpoint object.
return nil, nil
}
return e, nil
}
if strings.IndexByte(hostPort, ':') < 0 {
hostPort += ":0"
}
host, port, err := net.SplitHostPort(hostPort)
if err != nil {
return nil, err
}
p, err := strconv.ParseUint(port, 10, 16)
if err != nil {
return nil, err
}
e.Port = uint16(p)
addrs, err := net.LookupIP(host)
if err != nil {
return nil, err
}
for i := range addrs {
addr := addrs[i].To4()
if addr == nil {
// IPv6 - 16 bytes
if e.IPv6 == nil {
e.IPv6 = addrs[i].To16()
}
} else {
// IPv4 - 4 bytes
if e.IPv4 == nil {
e.IPv4 = addr
}
}
if e.IPv4 != nil && e.IPv6 != nil {
// Both IPv4 & IPv6 have been set, done...
break
}
}
return e, nil
}
|
