node_exporter/collector/boot_time_solaris.go

70 lines
1.8 KiB
Go

// Copyright 2018 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 solaris && !noboottime
// +build solaris,!noboottime
package collector
import (
"github.com/go-kit/log"
"github.com/illumos/go-kstat"
"github.com/prometheus/client_golang/prometheus"
)
type bootTimeCollector struct {
boottime typedDesc
logger log.Logger
}
func init() {
registerCollector("boottime", defaultEnabled, newBootTimeCollector)
}
func newBootTimeCollector(logger log.Logger) (Collector, error) {
return &bootTimeCollector{
boottime: typedDesc{
prometheus.NewDesc(
prometheus.BuildFQName(namespace, "", "boot_time_seconds"),
"Unix time of last boot, including microseconds.",
nil, nil,
), prometheus.GaugeValue},
logger: logger,
}, nil
}
// newBootTimeCollector returns a new Collector exposing system boot time on Solaris systems.
// Update pushes boot time onto ch
func (c *bootTimeCollector) Update(ch chan<- prometheus.Metric) error {
tok, err := kstat.Open()
if err != nil {
return err
}
defer tok.Close()
ks, err := tok.Lookup("unix", 0, "system_misc")
if err != nil {
return err
}
v, err := ks.GetNamed("boot_time")
if err != nil {
return err
}
ch <- c.boottime.mustNewConstMetric(float64(v.UintVal))
return nil
}