mirror of
https://github.com/prometheus/node_exporter.git
synced 2024-11-13 17:14:23 -08:00
54 lines
1.4 KiB
Go
54 lines
1.4 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.
|
|
|
|
//go:build !noloadavg
|
|
// +build !noloadavg
|
|
|
|
package collector
|
|
|
|
import (
|
|
"fmt"
|
|
"os"
|
|
"strconv"
|
|
"strings"
|
|
)
|
|
|
|
// Read loadavg from /proc.
|
|
func getLoad() (loads []float64, err error) {
|
|
data, err := os.ReadFile(procFilePath("loadavg"))
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
loads, err = parseLoad(string(data))
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return loads, nil
|
|
}
|
|
|
|
// Parse /proc loadavg and return 1m, 5m and 15m.
|
|
func parseLoad(data string) (loads []float64, err error) {
|
|
loads = make([]float64, 3)
|
|
parts := strings.Fields(data)
|
|
if len(parts) < 3 {
|
|
return nil, fmt.Errorf("unexpected content in %s", procFilePath("loadavg"))
|
|
}
|
|
for i, load := range parts[0:3] {
|
|
loads[i], err = strconv.ParseFloat(load, 64)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("could not parse load '%s': %w", load, err)
|
|
}
|
|
}
|
|
return loads, nil
|
|
}
|