264 lines
8.9 KiB
Go
264 lines
8.9 KiB
Go
// Copyright 2021 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 !noethtool
|
|
|
|
// The hard work of collecting data from the kernel via the ethtool interfaces is done by
|
|
// https://github.com/safchain/ethtool/
|
|
// by Sylvain Afchain. Used under the Apache license.
|
|
|
|
package collector
|
|
|
|
import (
|
|
"errors"
|
|
"fmt"
|
|
"os"
|
|
"regexp"
|
|
"sort"
|
|
"strings"
|
|
"syscall"
|
|
|
|
"github.com/go-kit/log"
|
|
"github.com/go-kit/log/level"
|
|
"github.com/prometheus/client_golang/prometheus"
|
|
"github.com/prometheus/procfs/sysfs"
|
|
"github.com/safchain/ethtool"
|
|
"golang.org/x/sys/unix"
|
|
"gopkg.in/alecthomas/kingpin.v2"
|
|
)
|
|
|
|
var (
|
|
ethtoolIgnoredDevices = kingpin.Flag("collector.ethtool.ignored-devices", "Regexp of net devices to ignore for ethtool collector.").Default("^$").String()
|
|
ethtoolIncludedMetrics = kingpin.Flag("collector.ethtool.metrics-include", "Regexp of ethtool stats to include.").Default(".*").String()
|
|
metricNameRegex = regexp.MustCompile(`_*[^0-9A-Za-z_]+_*`)
|
|
receivedRegex = regexp.MustCompile(`(^|_)rx(_|$)`)
|
|
transmittedRegex = regexp.MustCompile(`(^|_)tx(_|$)`)
|
|
)
|
|
|
|
type Ethtool interface {
|
|
DriverInfo(string) (ethtool.DrvInfo, error)
|
|
Stats(string) (map[string]uint64, error)
|
|
}
|
|
|
|
type ethtoolLibrary struct {
|
|
ethtool *ethtool.Ethtool
|
|
}
|
|
|
|
func (e *ethtoolLibrary) DriverInfo(intf string) (ethtool.DrvInfo, error) {
|
|
return e.ethtool.DriverInfo(intf)
|
|
}
|
|
|
|
func (e *ethtoolLibrary) Stats(intf string) (map[string]uint64, error) {
|
|
return e.ethtool.Stats(intf)
|
|
}
|
|
|
|
type ethtoolCollector struct {
|
|
fs sysfs.FS
|
|
entries map[string]*prometheus.Desc
|
|
ethtool Ethtool
|
|
ignoredDevicesPattern *regexp.Regexp
|
|
infoDesc *prometheus.Desc
|
|
metricsPattern *regexp.Regexp
|
|
logger log.Logger
|
|
}
|
|
|
|
// makeEthtoolCollector is the internal constructor for EthtoolCollector.
|
|
// This allows NewEthtoolTestCollector to override its .ethtool interface
|
|
// for testing.
|
|
func makeEthtoolCollector(logger log.Logger) (*ethtoolCollector, error) {
|
|
fs, err := sysfs.NewFS(*sysPath)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("failed to open sysfs: %w", err)
|
|
}
|
|
|
|
e, err := ethtool.NewEthtool()
|
|
if err != nil {
|
|
return nil, fmt.Errorf("failed to initialize ethtool library: %w", err)
|
|
}
|
|
|
|
// Pre-populate some common ethtool metrics.
|
|
return ðtoolCollector{
|
|
fs: fs,
|
|
ethtool: ðtoolLibrary{e},
|
|
ignoredDevicesPattern: regexp.MustCompile(*ethtoolIgnoredDevices),
|
|
metricsPattern: regexp.MustCompile(*ethtoolIncludedMetrics),
|
|
logger: logger,
|
|
entries: map[string]*prometheus.Desc{
|
|
"rx_bytes": prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, "ethtool", "received_bytes_total"),
|
|
"Network interface bytes received",
|
|
[]string{"device"}, nil,
|
|
),
|
|
"rx_dropped": prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, "ethtool", "received_dropped_total"),
|
|
"Number of received frames dropped",
|
|
[]string{"device"}, nil,
|
|
),
|
|
"rx_errors": prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, "ethtool", "received_errors_total"),
|
|
"Number of received frames with errors",
|
|
[]string{"device"}, nil,
|
|
),
|
|
"rx_packets": prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, "ethtool", "received_packets_total"),
|
|
"Network interface packets received",
|
|
[]string{"device"}, nil,
|
|
),
|
|
"tx_bytes": prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, "ethtool", "transmitted_bytes_total"),
|
|
"Network interface bytes sent",
|
|
[]string{"device"}, nil,
|
|
),
|
|
"tx_errors": prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, "ethtool", "transmitted_errors_total"),
|
|
"Number of sent frames with errors",
|
|
[]string{"device"}, nil,
|
|
),
|
|
"tx_packets": prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, "ethtool", "transmitted_packets_total"),
|
|
"Network interface packets sent",
|
|
[]string{"device"}, nil,
|
|
),
|
|
},
|
|
infoDesc: prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, "ethtool", "info"),
|
|
"A metric with a constant '1' value labeled by bus_info, device, driver, expansion_rom_version, firmware_version, version.",
|
|
[]string{"bus_info", "device", "driver", "expansion_rom_version", "firmware_version", "version"}, nil,
|
|
),
|
|
}, nil
|
|
}
|
|
|
|
func init() {
|
|
registerCollector("ethtool", defaultDisabled, NewEthtoolCollector)
|
|
}
|
|
|
|
// Sanitize the given metric name by replacing invalid characters by underscores.
|
|
//
|
|
// OpenMetrics and the Prometheus exposition format require the metric name
|
|
// to consist only of alphanumericals and "_", ":" and they must not start
|
|
// with digits. Since colons in MetricFamily are reserved to signal that the
|
|
// MetricFamily is the result of a calculation or aggregation of a general
|
|
// purpose monitoring system, colons will be replaced as well.
|
|
//
|
|
// Note: If not subsequently prepending a namespace and/or subsystem (e.g.,
|
|
// with prometheus.BuildFQName), the caller must ensure that the supplied
|
|
// metricName does not begin with a digit.
|
|
func SanitizeMetricName(metricName string) string {
|
|
return metricNameRegex.ReplaceAllString(metricName, "_")
|
|
}
|
|
|
|
// Generate the fully-qualified metric name for the ethool metric.
|
|
func buildEthtoolFQName(metric string) string {
|
|
metricName := strings.TrimLeft(strings.ToLower(SanitizeMetricName(metric)), "_")
|
|
metricName = receivedRegex.ReplaceAllString(metricName, "${1}received${2}")
|
|
metricName = transmittedRegex.ReplaceAllString(metricName, "${1}transmitted${2}")
|
|
return prometheus.BuildFQName(namespace, "ethtool", metricName)
|
|
}
|
|
|
|
// NewEthtoolCollector returns a new Collector exposing ethtool stats.
|
|
func NewEthtoolCollector(logger log.Logger) (Collector, error) {
|
|
return makeEthtoolCollector(logger)
|
|
}
|
|
|
|
func (c *ethtoolCollector) Update(ch chan<- prometheus.Metric) error {
|
|
netClass, err := c.fs.NetClass()
|
|
if err != nil {
|
|
if errors.Is(err, os.ErrNotExist) || errors.Is(err, os.ErrPermission) {
|
|
level.Debug(c.logger).Log("msg", "Could not read netclass file", "err", err)
|
|
return ErrNoData
|
|
}
|
|
return fmt.Errorf("could not get net class info: %w", err)
|
|
}
|
|
|
|
if len(netClass) == 0 {
|
|
return fmt.Errorf("no network devices found")
|
|
}
|
|
|
|
for device := range netClass {
|
|
var stats map[string]uint64
|
|
var err error
|
|
|
|
if c.ignoredDevicesPattern.MatchString(device) {
|
|
continue
|
|
}
|
|
|
|
drvInfo, err := c.ethtool.DriverInfo(device)
|
|
|
|
if err == nil {
|
|
ch <- prometheus.MustNewConstMetric(c.infoDesc, prometheus.GaugeValue, 1.0,
|
|
drvInfo.BusInfo, device, drvInfo.Driver, drvInfo.EromVersion, drvInfo.FwVersion, drvInfo.Version)
|
|
} else {
|
|
if errno, ok := err.(syscall.Errno); ok {
|
|
if err == unix.EOPNOTSUPP {
|
|
level.Debug(c.logger).Log("msg", "ethtool driver info error", "err", err, "device", device, "errno", uint(errno))
|
|
} else if errno != 0 {
|
|
level.Error(c.logger).Log("msg", "ethtool driver info error", "err", err, "device", device, "errno", uint(errno))
|
|
}
|
|
} else {
|
|
level.Error(c.logger).Log("msg", "ethtool driver info error", "err", err, "device", device)
|
|
}
|
|
}
|
|
|
|
stats, err = c.ethtool.Stats(device)
|
|
|
|
// If Stats() returns EOPNOTSUPP it doesn't support ethtool stats. Log that only at Debug level.
|
|
// Otherwise log it at Error level.
|
|
if err != nil {
|
|
if errno, ok := err.(syscall.Errno); ok {
|
|
if err == unix.EOPNOTSUPP {
|
|
level.Debug(c.logger).Log("msg", "ethtool stats error", "err", err, "device", device, "errno", uint(errno))
|
|
} else if errno != 0 {
|
|
level.Error(c.logger).Log("msg", "ethtool stats error", "err", err, "device", device, "errno", uint(errno))
|
|
}
|
|
} else {
|
|
level.Error(c.logger).Log("msg", "ethtool stats error", "err", err, "device", device)
|
|
}
|
|
}
|
|
|
|
if stats == nil || len(stats) < 1 {
|
|
// No stats returned; device does not support ethtool stats.
|
|
continue
|
|
}
|
|
|
|
// Sort metric names so that the test fixtures will match up
|
|
keys := make([]string, 0, len(stats))
|
|
for k := range stats {
|
|
keys = append(keys, k)
|
|
}
|
|
sort.Strings(keys)
|
|
|
|
for _, metric := range keys {
|
|
if !c.metricsPattern.MatchString(metric) {
|
|
continue
|
|
}
|
|
val := stats[metric]
|
|
metricFQName := buildEthtoolFQName(metric)
|
|
|
|
// Check to see if this metric exists; if not then create it and store it in c.entries.
|
|
entry, exists := c.entries[metric]
|
|
if !exists {
|
|
entry = prometheus.NewDesc(
|
|
metricFQName,
|
|
fmt.Sprintf("Network interface %s", metric),
|
|
[]string{"device"}, nil,
|
|
)
|
|
c.entries[metric] = entry
|
|
}
|
|
ch <- prometheus.MustNewConstMetric(
|
|
entry, prometheus.UntypedValue, float64(val), device)
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|