79 lines
2.4 KiB
Go
79 lines
2.4 KiB
Go
// Copyright 2019 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 openbsd,!amd64
|
|
// +build !nodiskstats
|
|
|
|
package collector
|
|
|
|
import (
|
|
"unsafe"
|
|
|
|
"github.com/go-kit/kit/log"
|
|
"github.com/prometheus/client_golang/prometheus"
|
|
"golang.org/x/sys/unix"
|
|
)
|
|
|
|
/*
|
|
#include <sys/types.h>
|
|
#include <sys/disk.h>
|
|
*/
|
|
import "C"
|
|
|
|
type diskstatsCollector struct {
|
|
rxfer typedDesc
|
|
rbytes typedDesc
|
|
wxfer typedDesc
|
|
wbytes typedDesc
|
|
time typedDesc
|
|
logger log.Logger
|
|
}
|
|
|
|
func init() {
|
|
registerCollector("diskstats", defaultEnabled, NewDiskstatsCollector)
|
|
}
|
|
|
|
// NewDiskstatsCollector returns a new Collector exposing disk device stats.
|
|
func NewDiskstatsCollector(logger log.Logger) (Collector, error) {
|
|
return &diskstatsCollector{
|
|
rxfer: typedDesc{readsCompletedDesc, prometheus.CounterValue},
|
|
rbytes: typedDesc{readBytesDesc, prometheus.CounterValue},
|
|
wxfer: typedDesc{writesCompletedDesc, prometheus.CounterValue},
|
|
wbytes: typedDesc{writtenBytesDesc, prometheus.CounterValue},
|
|
time: typedDesc{ioTimeSecondsDesc, prometheus.CounterValue},
|
|
logger: logger,
|
|
}, nil
|
|
}
|
|
|
|
func (c *diskstatsCollector) Update(ch chan<- prometheus.Metric) (err error) {
|
|
diskstatsb, err := unix.SysctlRaw("hw.diskstats")
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
ndisks := len(diskstatsb) / C.sizeof_struct_diskstats
|
|
diskstats := *(*[]C.struct_diskstats)(unsafe.Pointer(&diskstatsb))
|
|
|
|
for i := 0; i < ndisks; i++ {
|
|
diskname := C.GoString(&diskstats[i].ds_name[0])
|
|
|
|
ch <- c.rxfer.mustNewConstMetric(float64(diskstats[i].ds_rxfer), diskname)
|
|
ch <- c.rbytes.mustNewConstMetric(float64(diskstats[i].ds_rbytes), diskname)
|
|
ch <- c.wxfer.mustNewConstMetric(float64(diskstats[i].ds_wxfer), diskname)
|
|
ch <- c.wbytes.mustNewConstMetric(float64(diskstats[i].ds_wbytes), diskname)
|
|
time := float64(diskstats[i].ds_time.tv_sec) + float64(diskstats[i].ds_time.tv_usec)/1000000
|
|
ch <- c.time.mustNewConstMetric(time, diskname)
|
|
}
|
|
return nil
|
|
}
|