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// Copyright 2015 The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// +build !nonetdev
package collector
import (
"bytes"
"encoding/binary"
"fmt"
"net"
"regexp"
"strconv"
"github.com/go-kit/kit/log"
"github.com/go-kit/kit/log/level"
"golang.org/x/sys/unix"
)
func getNetDevStats(ignore *regexp.Regexp, accept *regexp.Regexp, logger log.Logger) (map[string]map[string]string, error) {
netDev := map[string]map[string]string{}
ifs, err := net.Interfaces()
if err != nil {
return nil, fmt.Errorf("net.Interfaces() failed: %w", err)
}
for _, iface := range ifs {
ifaceData, err := getIfaceData(iface.Index)
if err != nil {
level.Debug(logger).Log("msg", "failed to load data for interface", "device", iface.Name, "err", err)
continue
}
if ignore != nil && ignore.MatchString(iface.Name) {
level.Debug(logger).Log("msg", "Ignoring device", "device", iface.Name)
continue
}
if accept != nil && !accept.MatchString(iface.Name) {
level.Debug(logger).Log("msg", "Ignoring device", "device", iface.Name)
continue
}
devStats := map[string]string{}
devStats["receive_packets"] = strconv.FormatUint(ifaceData.Data.Ipackets, 10)
devStats["transmit_packets"] = strconv.FormatUint(ifaceData.Data.Opackets, 10)
devStats["receive_errs"] = strconv.FormatUint(ifaceData.Data.Ierrors, 10)
devStats["transmit_errs"] = strconv.FormatUint(ifaceData.Data.Oerrors, 10)
devStats["receive_bytes"] = strconv.FormatUint(ifaceData.Data.Ibytes, 10)
devStats["transmit_bytes"] = strconv.FormatUint(ifaceData.Data.Obytes, 10)
devStats["receive_multicast"] = strconv.FormatUint(ifaceData.Data.Imcasts, 10)
devStats["transmit_multicast"] = strconv.FormatUint(ifaceData.Data.Omcasts, 10)
netDev[iface.Name] = devStats
}
return netDev, nil
}
func getIfaceData(index int) (*ifMsghdr2, error) {
var data ifMsghdr2
rawData, err := unix.SysctlRaw("net", unix.AF_ROUTE, 0, 0, unix.NET_RT_IFLIST2, index)
if err != nil {
return nil, err
}
err = binary.Read(bytes.NewReader(rawData), binary.LittleEndian, &data)
return &data, err
}
type ifMsghdr2 struct {
Msglen uint16
Version uint8
Type uint8
Addrs int32
Flags int32
Index uint16
_ [2]byte
SndLen int32
SndMaxlen int32
SndDrops int32
Timer int32
Data ifData64
}
type ifData64 struct {
Type uint8
Typelen uint8
Physical uint8
Addrlen uint8
Hdrlen uint8
Recvquota uint8
Xmitquota uint8
Unused1 uint8
Mtu uint32
Metric uint32
Baudrate uint64
Ipackets uint64
Ierrors uint64
Opackets uint64
Oerrors uint64
Collisions uint64
Ibytes uint64
Obytes uint64
Imcasts uint64
Omcasts uint64
Iqdrops uint64
Noproto uint64
Recvtiming uint32
Xmittiming uint32
Lastchange unix.Timeval32
}
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