mirror of
https://github.com/prometheus/node_exporter.git
synced 2024-12-30 07:59:53 -08:00
111 lines
4 KiB
Go
111 lines
4 KiB
Go
// Copyright 2015 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// +build !nonetdev
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// +build linux freebsd openbsd dragonfly darwin
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package collector
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import (
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"errors"
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"fmt"
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"github.com/go-kit/kit/log"
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"github.com/go-kit/kit/log/level"
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"github.com/prometheus/client_golang/prometheus"
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"gopkg.in/alecthomas/kingpin.v2"
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)
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var (
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netdevDeviceInclude = kingpin.Flag("collector.netdev.device-include", "Regexp of net devices to include (mutually exclusive to device-exclude).").String()
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oldNetdevDeviceInclude = kingpin.Flag("collector.netdev.device-whitelist", "DEPRECATED: Use collector.netdev.device-include").Hidden().String()
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netdevDeviceExclude = kingpin.Flag("collector.netdev.device-exclude", "Regexp of net devices to exclude (mutually exclusive to device-include).").String()
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oldNetdevDeviceExclude = kingpin.Flag("collector.netdev.device-blacklist", "DEPRECATED: Use collector.netdev.device-exclude").Hidden().String()
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)
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type netDevCollector struct {
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subsystem string
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deviceFilter netDevFilter
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metricDescs map[string]*prometheus.Desc
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logger log.Logger
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}
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type netDevStats map[string]map[string]uint64
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func init() {
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registerCollector("netdev", defaultEnabled, NewNetDevCollector)
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}
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// NewNetDevCollector returns a new Collector exposing network device stats.
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func NewNetDevCollector(logger log.Logger) (Collector, error) {
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if *oldNetdevDeviceInclude != "" {
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if *netdevDeviceInclude == "" {
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level.Warn(logger).Log("msg", "--collector.netdev.device-whitelist is DEPRECATED and will be removed in 2.0.0, use --collector.netdev.device-include")
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*netdevDeviceInclude = *oldNetdevDeviceInclude
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} else {
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return nil, errors.New("--collector.netdev.device-whitelist and --collector.netdev.device-include are mutually exclusive")
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}
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}
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if *oldNetdevDeviceExclude != "" {
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if *netdevDeviceExclude == "" {
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level.Warn(logger).Log("msg", "--collector.netdev.device-blacklist is DEPRECATED and will be removed in 2.0.0, use --collector.netdev.device-exclude")
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*netdevDeviceExclude = *oldNetdevDeviceExclude
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} else {
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return nil, errors.New("--collector.netdev.device-blacklist and --collector.netdev.device-exclude are mutually exclusive")
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}
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}
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if *netdevDeviceExclude != "" && *netdevDeviceInclude != "" {
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return nil, errors.New("device-exclude & device-include are mutually exclusive")
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}
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if *netdevDeviceExclude != "" {
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level.Info(logger).Log("msg", "Parsed flag --collector.netdev.device-exclude", "flag", *netdevDeviceExclude)
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}
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if *netdevDeviceInclude != "" {
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level.Info(logger).Log("msg", "Parsed Flag --collector.netdev.device-include", "flag", *netdevDeviceInclude)
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}
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return &netDevCollector{
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subsystem: "network",
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deviceFilter: newNetDevFilter(*netdevDeviceExclude, *netdevDeviceInclude),
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metricDescs: map[string]*prometheus.Desc{},
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logger: logger,
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}, nil
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}
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func (c *netDevCollector) Update(ch chan<- prometheus.Metric) error {
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netDev, err := getNetDevStats(&c.deviceFilter, c.logger)
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if err != nil {
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return fmt.Errorf("couldn't get netstats: %w", err)
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}
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for dev, devStats := range netDev {
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for key, value := range devStats {
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desc, ok := c.metricDescs[key]
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if !ok {
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desc = prometheus.NewDesc(
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prometheus.BuildFQName(namespace, c.subsystem, key+"_total"),
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fmt.Sprintf("Network device statistic %s.", key),
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[]string{"device"},
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nil,
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)
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c.metricDescs[key] = desc
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}
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ch <- prometheus.MustNewConstMetric(desc, prometheus.CounterValue, float64(value), dev)
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}
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}
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return nil
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}
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