collector: move net.InterfaceByName() call out of getUnicastAddr()
Preparation for setting IPV6_MULTICAST_IF in listenUDP().
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bb0b23bff4
commit
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@ -59,15 +59,19 @@ func (coll *Collector) listenUDP(iface InterfaceConfig) {
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var addr net.IP
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var err error
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ifaceInfo, err := net.InterfaceByName(iface.InterfaceName)
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if err == nil {
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if iface.IPAddress != "" {
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addr = net.ParseIP(iface.IPAddress)
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} else {
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addr, err = getUnicastAddr(iface.InterfaceName)
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addr, err = getUnicastAddr(ifaceInfo)
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}
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}
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if err != nil {
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log.WithField("iface", iface.InterfaceName).Panic(err)
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}
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}
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multicastAddress := MulticastAddressDefault
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if iface.MulticastAddress != "" {
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@ -96,12 +100,7 @@ func (coll *Collector) listenUDP(iface InterfaceConfig) {
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}
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// Returns a unicast address of given interface (linklocal or global unicast address)
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func getUnicastAddr(ifname string) (net.IP, error) {
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iface, err := net.InterfaceByName(ifname)
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if err != nil {
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return nil, err
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}
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func getUnicastAddr(iface *net.Interface) (net.IP, error) {
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addresses, err := iface.Addrs()
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if err != nil {
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return nil, err
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