node_exporter/collector/netisr_freebsd.go

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// Copyright 2023 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.
//go:build freebsd && !nonetisr
// +build freebsd,!nonetisr
package collector
import (
"fmt"
"github.com/go-kit/log"
"github.com/prometheus/client_golang/prometheus"
)
type netisrCollector struct {
sysctls []bsdSysctl
logger log.Logger
}
const (
netisrCollectorSubsystem = "netisr"
)
func init() {
registerCollector("netisr", defaultEnabled, NewNetisrCollector)
}
func NewNetisrCollector(logger log.Logger) (Collector, error) {
return &netisrCollector{
sysctls: []bsdSysctl{
{
name: "numthreads",
description: "netisr current thread count",
mib: "net.isr.numthreads",
dataType: bsdSysctlTypeUint32,
valueType: prometheus.GaugeValue,
},
{
name: "maxprot",
description: "netisr maximum protocols",
mib: "net.isr.maxprot",
dataType: bsdSysctlTypeUint32,
valueType: prometheus.GaugeValue,
},
{
name: "defaultqlimit",
description: "netisr default queue limit",
mib: "net.isr.defaultqlimit",
dataType: bsdSysctlTypeUint32,
valueType: prometheus.GaugeValue,
},
{
name: "maxqlimit",
description: "netisr maximum queue limit",
mib: "net.isr.maxqlimit",
dataType: bsdSysctlTypeUint32,
valueType: prometheus.GaugeValue,
},
{
name: "bindthreads",
description: "netisr threads bound to CPUs",
mib: "net.isr.bindthreads",
dataType: bsdSysctlTypeUint32,
valueType: prometheus.GaugeValue,
},
{
name: "maxthreads",
description: "netisr maximum thread count",
mib: "net.isr.maxthreads",
dataType: bsdSysctlTypeUint32,
valueType: prometheus.GaugeValue,
},
},
logger: logger,
}, nil
}
func (c *netisrCollector) Update(ch chan<- prometheus.Metric) error {
for _, m := range c.sysctls {
v, err := m.Value()
if err != nil {
return fmt.Errorf("couldn't get sysctl: %w", err)
}
ch <- prometheus.MustNewConstMetric(
prometheus.NewDesc(
prometheus.BuildFQName(namespace, netisrCollectorSubsystem, m.name),
m.description,
nil, nil,
), m.valueType, v)
}
return nil
}