mirror of
https://github.com/prometheus/node_exporter.git
synced 2025-03-05 21:00:12 -08:00
13f019f822
This separates the gauges related to udp_queues and the counter related to the total number of drops, but keeps them under the same namespace. Signed-off-by: Chris Cleeland <chris.cleeland@gmail.com>
101 lines
3 KiB
Go
101 lines
3 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 !noudp_queues
|
|
// +build !noudp_queues
|
|
|
|
package collector
|
|
|
|
import (
|
|
"errors"
|
|
"fmt"
|
|
"log/slog"
|
|
"os"
|
|
|
|
"github.com/prometheus/client_golang/prometheus"
|
|
"github.com/prometheus/procfs"
|
|
)
|
|
|
|
type (
|
|
udpCollector struct {
|
|
fs procfs.FS
|
|
queues *prometheus.Desc
|
|
drops *prometheus.Desc
|
|
logger *slog.Logger
|
|
}
|
|
)
|
|
|
|
func init() {
|
|
registerCollector("udp", defaultEnabled, NewUDPCollector)
|
|
}
|
|
|
|
// NewUDPqueuesCollector returns a new Collector exposing network udp queued bytes.
|
|
func NewUDPCollector(logger *slog.Logger) (Collector, error) {
|
|
fs, err := procfs.NewFS(*procPath)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("failed to open procfs: %w", err)
|
|
}
|
|
return &udpCollector{
|
|
fs: fs,
|
|
queues: prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, "udp", "queues"),
|
|
"Number of allocated memory in the kernel for UDP datagrams in bytes.",
|
|
[]string{"queue", "ip"}, nil,
|
|
),
|
|
drops: prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, "udp", "drops_total"),
|
|
"Total number of datagrams dropped.",
|
|
[]string{"ip"}, nil,
|
|
),
|
|
logger: logger,
|
|
}, nil
|
|
}
|
|
|
|
func (c *udpCollector) Update(ch chan<- prometheus.Metric) error {
|
|
|
|
s4, errIPv4 := c.fs.NetUDPSummary()
|
|
if errIPv4 == nil {
|
|
ch <- prometheus.MustNewConstMetric(c.queues, prometheus.GaugeValue, float64(s4.TxQueueLength), "tx", "v4")
|
|
ch <- prometheus.MustNewConstMetric(c.queues, prometheus.GaugeValue, float64(s4.RxQueueLength), "rx", "v4")
|
|
if s4.Drops != nil {
|
|
ch <- prometheus.MustNewConstMetric(c.drops, prometheus.CounterValue, float64(*s4.Drops), "v4")
|
|
}
|
|
} else {
|
|
if errors.Is(errIPv4, os.ErrNotExist) {
|
|
c.logger.Debug("not collecting ipv4 based metrics")
|
|
} else {
|
|
return fmt.Errorf("couldn't get udp queued bytes: %w", errIPv4)
|
|
}
|
|
}
|
|
|
|
s6, errIPv6 := c.fs.NetUDP6Summary()
|
|
if errIPv6 == nil {
|
|
ch <- prometheus.MustNewConstMetric(c.queues, prometheus.GaugeValue, float64(s6.TxQueueLength), "tx", "v6")
|
|
ch <- prometheus.MustNewConstMetric(c.queues, prometheus.GaugeValue, float64(s6.RxQueueLength), "rx", "v6")
|
|
if s6.Drops != nil {
|
|
ch <- prometheus.MustNewConstMetric(c.drops, prometheus.CounterValue, float64(*s6.Drops), "v6")
|
|
}
|
|
} else {
|
|
if errors.Is(errIPv6, os.ErrNotExist) {
|
|
c.logger.Debug("not collecting ipv6 based metrics")
|
|
} else {
|
|
return fmt.Errorf("couldn't get udp6 queued bytes: %w", errIPv6)
|
|
}
|
|
}
|
|
|
|
if errors.Is(errIPv4, os.ErrNotExist) && errors.Is(errIPv6, os.ErrNotExist) {
|
|
return ErrNoData
|
|
}
|
|
return nil
|
|
}
|