mirror of
https://github.com/prometheus/node_exporter.git
synced 2024-09-21 00:27:31 -07:00
* Move NodeCollector into package collector * Refactor collector enabling * Update README with new collector enabled flags * Fix out-of-date inline flag reference syntax * Use new flags in end-to-end tests * Add flag to disable all default collectors * Track if a flag has been set explicitly * Add --collectors.disable-defaults to README * Revert disable-defaults flag * Shorten flags * Fixup timex collector registration * Fix end-to-end tests * Change procfs and sysfs path flags * Fix review comments
143 lines
4.8 KiB
Go
143 lines
4.8 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 !noipvs
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package collector
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import (
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"fmt"
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"os"
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"strconv"
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"github.com/prometheus/client_golang/prometheus"
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"github.com/prometheus/common/log"
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"github.com/prometheus/procfs"
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)
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type ipvsCollector struct {
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Collector
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fs procfs.FS
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backendConnectionsActive, backendConnectionsInact, backendWeight typedDesc
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connections, incomingPackets, outgoingPackets, incomingBytes, outgoingBytes typedDesc
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}
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func init() {
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registerCollector("ipvs", defaultEnabled, NewIPVSCollector)
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}
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// NewIPVSCollector sets up a new collector for IPVS metrics. It accepts the
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// "procfs" config parameter to override the default proc location (/proc).
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func NewIPVSCollector() (Collector, error) {
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return newIPVSCollector()
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}
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func newIPVSCollector() (*ipvsCollector, error) {
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var (
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ipvsBackendLabelNames = []string{
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"local_address",
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"local_port",
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"remote_address",
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"remote_port",
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"proto",
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}
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c ipvsCollector
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err error
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subsystem = "ipvs"
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)
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c.fs, err = procfs.NewFS(*procPath)
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if err != nil {
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return nil, err
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}
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c.connections = typedDesc{prometheus.NewDesc(
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prometheus.BuildFQName(namespace, subsystem, "connections_total"),
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"The total number of connections made.",
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nil, nil,
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), prometheus.CounterValue}
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c.incomingPackets = typedDesc{prometheus.NewDesc(
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prometheus.BuildFQName(namespace, subsystem, "incoming_packets_total"),
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"The total number of incoming packets.",
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nil, nil,
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), prometheus.CounterValue}
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c.outgoingPackets = typedDesc{prometheus.NewDesc(
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prometheus.BuildFQName(namespace, subsystem, "outgoing_packets_total"),
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"The total number of outgoing packets.",
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nil, nil,
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), prometheus.CounterValue}
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c.incomingBytes = typedDesc{prometheus.NewDesc(
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prometheus.BuildFQName(namespace, subsystem, "incoming_bytes_total"),
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"The total amount of incoming data.",
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nil, nil,
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), prometheus.CounterValue}
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c.outgoingBytes = typedDesc{prometheus.NewDesc(
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prometheus.BuildFQName(namespace, subsystem, "outgoing_bytes_total"),
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"The total amount of outgoing data.",
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nil, nil,
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), prometheus.CounterValue}
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c.backendConnectionsActive = typedDesc{prometheus.NewDesc(
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prometheus.BuildFQName(namespace, subsystem, "backend_connections_active"),
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"The current active connections by local and remote address.",
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ipvsBackendLabelNames, nil,
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), prometheus.GaugeValue}
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c.backendConnectionsInact = typedDesc{prometheus.NewDesc(
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prometheus.BuildFQName(namespace, subsystem, "backend_connections_inactive"),
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"The current inactive connections by local and remote address.",
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ipvsBackendLabelNames, nil,
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), prometheus.GaugeValue}
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c.backendWeight = typedDesc{prometheus.NewDesc(
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prometheus.BuildFQName(namespace, subsystem, "backend_weight"),
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"The current backend weight by local and remote address.",
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ipvsBackendLabelNames, nil,
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), prometheus.GaugeValue}
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return &c, nil
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}
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func (c *ipvsCollector) Update(ch chan<- prometheus.Metric) error {
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ipvsStats, err := c.fs.NewIPVSStats()
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if err != nil {
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// Cannot access ipvs metrics, report no error.
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if os.IsNotExist(err) {
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log.Debug("ipvs collector metrics are not available for this system")
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return nil
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}
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return fmt.Errorf("could not get IPVS stats: %s", err)
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}
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ch <- c.connections.mustNewConstMetric(float64(ipvsStats.Connections))
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ch <- c.incomingPackets.mustNewConstMetric(float64(ipvsStats.IncomingPackets))
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ch <- c.outgoingPackets.mustNewConstMetric(float64(ipvsStats.OutgoingPackets))
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ch <- c.incomingBytes.mustNewConstMetric(float64(ipvsStats.IncomingBytes))
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ch <- c.outgoingBytes.mustNewConstMetric(float64(ipvsStats.OutgoingBytes))
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backendStats, err := c.fs.NewIPVSBackendStatus()
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if err != nil {
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return fmt.Errorf("could not get backend status: %s", err)
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}
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for _, backend := range backendStats {
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labelValues := []string{
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backend.LocalAddress.String(),
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strconv.FormatUint(uint64(backend.LocalPort), 10),
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backend.RemoteAddress.String(),
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strconv.FormatUint(uint64(backend.RemotePort), 10),
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backend.Proto,
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}
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ch <- c.backendConnectionsActive.mustNewConstMetric(float64(backend.ActiveConn), labelValues...)
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ch <- c.backendConnectionsInact.mustNewConstMetric(float64(backend.InactConn), labelValues...)
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ch <- c.backendWeight.mustNewConstMetric(float64(backend.Weight), labelValues...)
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}
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return nil
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}
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