69 lines
1.8 KiB
Go
69 lines
1.8 KiB
Go
|
// Copyright 2020 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.
|
||
|
|
|
||
|
|
package procfs
|
||
|
|
|
||
|
|
import (
|
||
|
|
"bufio"
|
||
|
|
"os"
|
||
|
|
"path/filepath"
|
||
|
|
"strconv"
|
||
|
|
"strings"
|
||
|
|
)
|
||
|
|
|
||
|
|
// NetStat contains statistics for all the counters from one file
|
||
|
|
type NetStat struct {
|
||
|
|
Filename string
|
||
|
|
Stats map[string][]uint64
|
||
|
|
}
|
||
|
|
|
||
|
|
// NetStat retrieves stats from /proc/net/stat/
|
||
|
|
func (fs FS) NetStat() ([]NetStat, error) {
|
||
|
|
statFiles, err := filepath.Glob(fs.proc.Path("net/stat/*"))
|
||
|
|
if err != nil {
|
||
|
|
return nil, err
|
||
|
|
}
|
||
|
|
|
||
|
|
var netStatsTotal []NetStat
|
||
|
|
|
||
|
|
for _, filePath := range statFiles {
|
||
|
|
file, err := os.Open(filePath)
|
||
|
|
if err != nil {
|
||
|
|
return nil, err
|
||
|
|
}
|
||
|
|
|
||
|
|
netStatFile := NetStat{
|
||
|
|
Filename: filepath.Base(filePath),
|
||
|
|
Stats: make(map[string][]uint64),
|
||
|
|
}
|
||
|
|
scanner := bufio.NewScanner(file)
|
||
|
|
scanner.Scan()
|
||
|
|
// First string is always a header for stats
|
||
|
|
var headers []string
|
||
|
|
headers = append(headers, strings.Fields(scanner.Text())...)
|
||
|
|
|
||
|
|
// Other strings represent per-CPU counters
|
||
|
|
for scanner.Scan() {
|
||
|
|
for num, counter := range strings.Fields(scanner.Text()) {
|
||
|
|
value, err := strconv.ParseUint(counter, 16, 32)
|
||
|
|
if err != nil {
|
||
|
|
return nil, err
|
||
|
|
}
|
||
|
|
netStatFile.Stats[headers[num]] = append(netStatFile.Stats[headers[num]], value)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
netStatsTotal = append(netStatsTotal, netStatFile)
|
||
|
|
}
|
||
|
|
return netStatsTotal, nil
|
||
|
|
}
|