103 lines
2.6 KiB
Go
103 lines
2.6 KiB
Go
// Copyright 2019 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 !nosoftnet
|
|
|
|
package collector
|
|
|
|
import (
|
|
"fmt"
|
|
"strconv"
|
|
|
|
"github.com/go-kit/kit/log"
|
|
"github.com/prometheus/client_golang/prometheus"
|
|
"github.com/prometheus/procfs"
|
|
)
|
|
|
|
type softnetCollector struct {
|
|
fs procfs.FS
|
|
processed *prometheus.Desc
|
|
dropped *prometheus.Desc
|
|
timeSqueezed *prometheus.Desc
|
|
logger log.Logger
|
|
}
|
|
|
|
const (
|
|
softnetSubsystem = "softnet"
|
|
)
|
|
|
|
func init() {
|
|
registerCollector("softnet", defaultEnabled, NewSoftnetCollector)
|
|
}
|
|
|
|
// NewSoftnetCollector returns a new Collector exposing softnet metrics.
|
|
func NewSoftnetCollector(logger log.Logger) (Collector, error) {
|
|
fs, err := procfs.NewFS(*procPath)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("failed to open procfs: %w", err)
|
|
}
|
|
|
|
return &softnetCollector{
|
|
fs: fs,
|
|
processed: prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, softnetSubsystem, "processed_total"),
|
|
"Number of processed packets",
|
|
[]string{"cpu"}, nil,
|
|
),
|
|
dropped: prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, softnetSubsystem, "dropped_total"),
|
|
"Number of dropped packets",
|
|
[]string{"cpu"}, nil,
|
|
),
|
|
timeSqueezed: prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, softnetSubsystem, "times_squeezed_total"),
|
|
"Number of times processing packets ran out of quota",
|
|
[]string{"cpu"}, nil,
|
|
),
|
|
logger: logger,
|
|
}, nil
|
|
}
|
|
|
|
// Update gets parsed softnet statistics using procfs.
|
|
func (c *softnetCollector) Update(ch chan<- prometheus.Metric) error {
|
|
stats, err := c.fs.NetSoftnetStat()
|
|
if err != nil {
|
|
return fmt.Errorf("could not get softnet statistics: %s", err)
|
|
}
|
|
|
|
for cpuNumber, cpuStats := range stats {
|
|
cpu := strconv.Itoa(cpuNumber)
|
|
|
|
ch <- prometheus.MustNewConstMetric(
|
|
c.processed,
|
|
prometheus.CounterValue,
|
|
float64(cpuStats.Processed),
|
|
cpu,
|
|
)
|
|
ch <- prometheus.MustNewConstMetric(
|
|
c.dropped,
|
|
prometheus.CounterValue,
|
|
float64(cpuStats.Dropped),
|
|
cpu,
|
|
)
|
|
ch <- prometheus.MustNewConstMetric(
|
|
c.timeSqueezed,
|
|
prometheus.CounterValue,
|
|
float64(cpuStats.TimeSqueezed),
|
|
cpu,
|
|
)
|
|
}
|
|
|
|
return nil
|
|
}
|