mirror of
https://github.com/prometheus/node_exporter.git
synced 2024-11-23 20:36:21 +01:00
b10ca77680
* Allow any character (UTF-8) for Linux interface names. Signed-off-by: Ben Kochie <superq@gmail.com>
88 lines
2.4 KiB
Go
88 lines
2.4 KiB
Go
// 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 (
|
|
"bufio"
|
|
"fmt"
|
|
"io"
|
|
"os"
|
|
"regexp"
|
|
"strings"
|
|
|
|
"github.com/prometheus/common/log"
|
|
)
|
|
|
|
var (
|
|
procNetDevInterfaceRE = regexp.MustCompile(`^(.+): *(.+)$`)
|
|
procNetDevFieldSep = regexp.MustCompile(` +`)
|
|
)
|
|
|
|
func getNetDevStats(ignore *regexp.Regexp) (map[string]map[string]string, error) {
|
|
file, err := os.Open(procFilePath("net/dev"))
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
defer file.Close()
|
|
|
|
return parseNetDevStats(file, ignore)
|
|
}
|
|
|
|
func parseNetDevStats(r io.Reader, ignore *regexp.Regexp) (map[string]map[string]string, error) {
|
|
scanner := bufio.NewScanner(r)
|
|
scanner.Scan() // skip first header
|
|
scanner.Scan()
|
|
parts := strings.Split(scanner.Text(), "|")
|
|
if len(parts) != 3 { // interface + receive + transmit
|
|
return nil, fmt.Errorf("invalid header line in net/dev: %s",
|
|
scanner.Text())
|
|
}
|
|
|
|
receiveHeader := strings.Fields(parts[1])
|
|
transmitHeader := strings.Fields(parts[2])
|
|
headerLength := len(receiveHeader) + len(transmitHeader)
|
|
|
|
netDev := map[string]map[string]string{}
|
|
for scanner.Scan() {
|
|
line := strings.TrimLeft(scanner.Text(), " ")
|
|
parts := procNetDevInterfaceRE.FindStringSubmatch(line)
|
|
if len(parts) != 3 {
|
|
return nil, fmt.Errorf("couldn't get interface name, invalid line in net/dev: %q", line)
|
|
}
|
|
|
|
dev := parts[1]
|
|
if ignore.MatchString(dev) {
|
|
log.Debugf("Ignoring device: %s", dev)
|
|
continue
|
|
}
|
|
|
|
values := procNetDevFieldSep.Split(strings.TrimLeft(parts[2], " "), -1)
|
|
if len(values) != headerLength {
|
|
return nil, fmt.Errorf("couldn't get values, invalid line in net/dev: %q", parts[2])
|
|
}
|
|
|
|
netDev[dev] = map[string]string{}
|
|
for i := 0; i < len(receiveHeader); i++ {
|
|
netDev[dev]["receive_"+receiveHeader[i]] = values[i]
|
|
}
|
|
|
|
for i := 0; i < len(transmitHeader); i++ {
|
|
netDev[dev]["transmit_"+transmitHeader[i]] = values[i+len(receiveHeader)]
|
|
}
|
|
}
|
|
return netDev, scanner.Err()
|
|
}
|