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// SPDX-License-Identifier: GPL-3.0-or-later
package ping
import (
"errors"
"fmt"
"net"
"time"
"github.com/netdata/netdata/go/go.d.plugin/logger"
probing "github.com/prometheus-community/pro-bing"
)
func newPingProber(conf pingProberConfig, log *logger.Logger) prober {
var source string
if conf.iface != "" {
if addr, err := getInterfaceIPAddress(conf.iface); err != nil {
log.Warningf("error getting interface '%s' IP address: %v", conf.iface, err)
} else {
log.Infof("interface '%s' IP address '%s', will use it as the source", conf.iface, addr)
source = addr
}
}
return &pingProber{
network: conf.network,
privileged: conf.privileged,
packets: conf.packets,
source: source,
interval: conf.interval,
deadline: conf.deadline,
Logger: log,
}
}
type pingProberConfig struct {
network string
privileged bool
packets int
iface string
interval time.Duration
deadline time.Duration
}
type pingProber struct {
*logger.Logger
network string
privileged bool
packets int
source string
interval time.Duration
deadline time.Duration
}
func (p *pingProber) ping(host string) (*probing.Statistics, error) {
pr := probing.New(host)
pr.SetNetwork(p.network)
if err := pr.Resolve(); err != nil {
return nil, fmt.Errorf("DNS lookup '%s' : %v", host, err)
}
pr.Source = p.source
pr.RecordRtts = false
pr.Interval = p.interval
pr.Count = p.packets
pr.Timeout = p.deadline
pr.SetPrivileged(p.privileged)
pr.SetLogger(nil)
if err := pr.Run(); err != nil {
return nil, fmt.Errorf("pinging host '%s' (ip %s): %v", pr.Addr(), pr.IPAddr(), err)
}
stats := pr.Statistics()
p.Debugf("ping stats for host '%s' (ip '%s'): %+v", pr.Addr(), pr.IPAddr(), stats)
return stats, nil
}
func getInterfaceIPAddress(ifaceName string) (ipaddr string, err error) {
iface, err := net.InterfaceByName(ifaceName)
if err != nil {
return "", err
}
addresses, err := iface.Addrs()
if err != nil {
return "", err
}
// FIXME: add IPv6 support
var v4Addr string
for _, addr := range addresses {
if ipnet, ok := addr.(*net.IPNet); ok && ipnet.IP.To4() != nil {
v4Addr = ipnet.IP.To4().String()
break
}
}
if v4Addr == "" {
return "", errors.New("ipv4 addresses not found")
}
return v4Addr, nil
}
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