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// 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.
// +build !nonetdev
// +build linux freebsd openbsd dragonfly darwin
package collector
import (
"errors"
"fmt"
"regexp"
"strconv"
"github.com/go-kit/kit/log"
"github.com/go-kit/kit/log/level"
"github.com/prometheus/client_golang/prometheus"
"gopkg.in/alecthomas/kingpin.v2"
)
var (
netdevDeviceInclude = kingpin.Flag("collector.netdev.device-include", "Regexp of net devices to include (mutually exclusive to device-exclude).").String()
oldNetdevDeviceInclude = kingpin.Flag("collector.netdev.device-whitelist", "DEPRECATED: Use collector.netdev.device-include").Hidden().String()
netdevDeviceExclude = kingpin.Flag("collector.netdev.device-exclude", "Regexp of net devices to exclude (mutually exclusive to device-include).").String()
oldNetdevDeviceExclude = kingpin.Flag("collector.netdev.device-blacklist", "DEPRECATED: Use collector.netdev.device-exclude").Hidden().String()
)
type netDevCollector struct {
subsystem string
deviceExcludePattern *regexp.Regexp
deviceIncludePattern *regexp.Regexp
metricDescs map[string]*prometheus.Desc
logger log.Logger
}
func init() {
registerCollector("netdev", defaultEnabled, NewNetDevCollector)
}
// NewNetDevCollector returns a new Collector exposing network device stats.
func NewNetDevCollector(logger log.Logger) (Collector, error) {
if *oldNetdevDeviceInclude != "" {
if *netdevDeviceInclude == "" {
level.Warn(logger).Log("msg", "--collector.netdev.device-whitelist is DEPRECATED and will be removed in 2.0.0, use --collector.netdev.device-include")
*netdevDeviceInclude = *oldNetdevDeviceInclude
} else {
return nil, errors.New("--collector.netdev.device-whitelist and --collector.netdev.device-include are mutually exclusive")
}
}
if *oldNetdevDeviceExclude != "" {
if *netdevDeviceExclude == "" {
level.Warn(logger).Log("msg", "--collector.netdev.device-blacklist is DEPRECATED and will be removed in 2.0.0, use --collector.netdev.device-exclude")
*netdevDeviceExclude = *oldNetdevDeviceExclude
} else {
return nil, errors.New("--collector.netdev.device-blacklist and --collector.netdev.device-exclude are mutually exclusive")
}
}
if *netdevDeviceExclude != "" && *netdevDeviceInclude != "" {
return nil, errors.New("device-exclude & device-include are mutually exclusive")
}
var excludePattern *regexp.Regexp
if *netdevDeviceExclude != "" {
level.Info(logger).Log("msg", "Parsed flag --collector.netdev.device-exclude", "flag", *netdevDeviceExclude)
excludePattern = regexp.MustCompile(*netdevDeviceExclude)
}
var includePattern *regexp.Regexp
if *netdevDeviceInclude != "" {
level.Info(logger).Log("msg", "Parsed Flag --collector.netdev.device-include", "flag", *netdevDeviceInclude)
includePattern = regexp.MustCompile(*netdevDeviceInclude)
}
return &netDevCollector{
subsystem: "network",
deviceExcludePattern: excludePattern,
deviceIncludePattern: includePattern,
metricDescs: map[string]*prometheus.Desc{},
logger: logger,
}, nil
}
func (c *netDevCollector) Update(ch chan<- prometheus.Metric) error {
netDev, err := getNetDevStats(c.deviceExcludePattern, c.deviceIncludePattern, c.logger)
if err != nil {
return fmt.Errorf("couldn't get netstats: %w", err)
}
for dev, devStats := range netDev {
for key, value := range devStats {
desc, ok := c.metricDescs[key]
if !ok {
desc = prometheus.NewDesc(
prometheus.BuildFQName(namespace, c.subsystem, key+"_total"),
fmt.Sprintf("Network device statistic %s.", key),
[]string{"device"},
nil,
)
c.metricDescs[key] = desc
}
v, err := strconv.ParseFloat(value, 64)
if err != nil {
return fmt.Errorf("invalid value %s in netstats: %w", value, err)
}
ch <- prometheus.MustNewConstMetric(desc, prometheus.CounterValue, v, dev)
}
}
return nil
}
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