mirror of
https://github.com/prometheus/node_exporter.git
synced 2024-11-27 02:53:02 +01:00
73 lines
1.8 KiB
Go
73 lines
1.8 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 !nolnstat
|
|
// +build !nolnstat
|
|
|
|
package collector
|
|
|
|
import (
|
|
"fmt"
|
|
"strconv"
|
|
|
|
"github.com/go-kit/log"
|
|
"github.com/prometheus/client_golang/prometheus"
|
|
"github.com/prometheus/procfs"
|
|
)
|
|
|
|
type lnstatCollector struct {
|
|
logger log.Logger
|
|
}
|
|
|
|
func init() {
|
|
registerCollector("lnstat", defaultDisabled, NewLnstatCollector)
|
|
}
|
|
|
|
func NewLnstatCollector(logger log.Logger) (Collector, error) {
|
|
return &lnstatCollector{logger}, nil
|
|
}
|
|
|
|
func (c *lnstatCollector) Update(ch chan<- prometheus.Metric) error {
|
|
const (
|
|
subsystem = "lnstat"
|
|
)
|
|
|
|
fs, err := procfs.NewFS(*procPath)
|
|
if err != nil {
|
|
return fmt.Errorf("failed to open procfs: %w", err)
|
|
}
|
|
|
|
netStats, err := fs.NetStat()
|
|
if err != nil {
|
|
return fmt.Errorf("lnstat error: %s", err)
|
|
}
|
|
|
|
for _, netStatFile := range netStats {
|
|
labelNames := []string{"subsystem", "cpu"}
|
|
for header, stats := range netStatFile.Stats {
|
|
for cpu, value := range stats {
|
|
labelValues := []string{netStatFile.Filename, strconv.Itoa(cpu)}
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, subsystem, header+"_total"),
|
|
"linux network cache stats",
|
|
labelNames, nil,
|
|
),
|
|
prometheus.CounterValue, float64(value), labelValues...,
|
|
)
|
|
}
|
|
}
|
|
}
|
|
return nil
|
|
}
|