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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 !noipvs
package collector
import (
"fmt"
"strconv"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/procfs"
)
type ipvsCollector struct {
Collector
fs procfs.FS
backendConnectionsActive, backendConnectionsInact, backendWeight *prometheus.GaugeVec
connections, incomingPackets, outgoingPackets, incomingBytes, outgoingBytes prometheus.Counter
}
func init() {
Factories["ipvs"] = NewIPVSCollector
}
// NewIPVSCollector sets up a new collector for IPVS metrics. It accepts the
// "procfs" config parameter to override the default proc location (/proc).
func NewIPVSCollector() (Collector, error) {
return newIPVSCollector()
}
func newIPVSCollector() (*ipvsCollector, error) {
var (
ipvsBackendLabelNames = []string{
"local_address",
"local_port",
"remote_address",
"remote_port",
"proto",
}
c ipvsCollector
err error
subsystem = "ipvs"
)
c.fs, err = procfs.NewFS(*procPath)
if err != nil {
return nil, err
}
c.connections = prometheus.NewCounter(
prometheus.CounterOpts{
Namespace: Namespace,
Subsystem: subsystem,
Name: "connections_total",
Help: "The total number of connections made.",
},
)
c.incomingPackets = prometheus.NewCounter(
prometheus.CounterOpts{
Namespace: Namespace,
Subsystem: subsystem,
Name: "incoming_packets_total",
Help: "The total number of incoming packets.",
},
)
c.outgoingPackets = prometheus.NewCounter(
prometheus.CounterOpts{
Namespace: Namespace,
Subsystem: subsystem,
Name: "outgoing_packets_total",
Help: "The total number of outgoing packets.",
},
)
c.incomingBytes = prometheus.NewCounter(
prometheus.CounterOpts{
Namespace: Namespace,
Subsystem: subsystem,
Name: "incoming_bytes_total",
Help: "The total amount of incoming data.",
},
)
c.outgoingBytes = prometheus.NewCounter(
prometheus.CounterOpts{
Namespace: Namespace,
Subsystem: subsystem,
Name: "outgoing_bytes_total",
Help: "The total amount of outgoing data.",
},
)
c.backendConnectionsActive = prometheus.NewGaugeVec(
prometheus.GaugeOpts{
Namespace: Namespace,
Subsystem: subsystem,
Name: "backend_connections_active",
Help: "The current active connections by local and remote address.",
},
ipvsBackendLabelNames,
)
c.backendConnectionsInact = prometheus.NewGaugeVec(
prometheus.GaugeOpts{
Namespace: Namespace,
Subsystem: subsystem,
Name: "backend_connections_inactive",
Help: "The current inactive connections by local and remote address.",
},
ipvsBackendLabelNames,
)
c.backendWeight = prometheus.NewGaugeVec(
prometheus.GaugeOpts{
Namespace: Namespace,
Subsystem: subsystem,
Name: "backend_weight",
Help: "The current backend weight by local and remote address.",
},
ipvsBackendLabelNames,
)
return &c, nil
}
func (c *ipvsCollector) Update(ch chan<- prometheus.Metric) error {
ipvsStats, err := c.fs.NewIPVSStats()
if err != nil {
return fmt.Errorf("could not get IPVS stats: %s", err)
}
c.connections.Set(float64(ipvsStats.Connections))
c.incomingPackets.Set(float64(ipvsStats.IncomingPackets))
c.outgoingPackets.Set(float64(ipvsStats.OutgoingPackets))
c.incomingBytes.Set(float64(ipvsStats.IncomingBytes))
c.outgoingBytes.Set(float64(ipvsStats.OutgoingBytes))
c.connections.Collect(ch)
c.incomingPackets.Collect(ch)
c.outgoingPackets.Collect(ch)
c.incomingBytes.Collect(ch)
c.outgoingBytes.Collect(ch)
backendStats, err := c.fs.NewIPVSBackendStatus()
if err != nil {
return fmt.Errorf("could not get backend status: %s", err)
}
for _, backend := range backendStats {
labelValues := []string{
backend.LocalAddress.String(),
strconv.FormatUint(uint64(backend.LocalPort), 10),
backend.RemoteAddress.String(),
strconv.FormatUint(uint64(backend.RemotePort), 10),
backend.Proto,
}
c.backendConnectionsActive.WithLabelValues(labelValues...).Set(float64(backend.ActiveConn))
c.backendConnectionsInact.WithLabelValues(labelValues...).Set(float64(backend.InactConn))
c.backendWeight.WithLabelValues(labelValues...).Set(float64(backend.Weight))
}
c.backendConnectionsActive.Collect(ch)
c.backendConnectionsInact.Collect(ch)
c.backendWeight.Collect(ch)
return nil
}
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