remove openbsd amd64 cgo

collector/diskstats_openbsd_amd64.go

@@ -0,0 +1,89 @@
+// 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 !nodiskstats
+
+package collector
+
+import (
+	"unsafe"
+
+	"github.com/go-kit/kit/log"
+	"github.com/prometheus/client_golang/prometheus"
+	"golang.org/x/sys/unix"
+)
+
+const (
+	DS_DISKNAMELEN = 16
+)
+
+type DiskStats struct {
+	Name       [DS_DISKNAMELEN]int8
+	Busy       int32
+	Rxfer      uint64
+	Wxfer      uint64
+	Seek       uint64
+	Rbytes     uint64
+	Wbytes     uint64
+	Attachtime unix.Timeval
+	Timestamp  unix.Timeval
+	Time       unix.Timeval
+}
+
+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) / int(unsafe.Sizeof(DiskStats{}))
+	diskstats := *(*[]DiskStats)(unsafe.Pointer(&diskstatsb))
+
+	for i := 0; i < ndisks; i++ {
+		dn := *(*[DS_DISKNAMELEN]int8)(unsafe.Pointer(&diskstats[i].Name[0]))
+		diskname := int8ToString(dn[:])
+
+		ch <- c.rxfer.mustNewConstMetric(float64(diskstats[i].Rxfer), diskname)
+		ch <- c.rbytes.mustNewConstMetric(float64(diskstats[i].Rbytes), diskname)
+		ch <- c.wxfer.mustNewConstMetric(float64(diskstats[i].Wxfer), diskname)
+		ch <- c.wbytes.mustNewConstMetric(float64(diskstats[i].Wbytes), diskname)
+		time := float64(diskstats[i].Time.Sec) + float64(diskstats[i].Time.Usec)/1000000
+		ch <- c.time.mustNewConstMetric(time, diskname)
+	}
+	return nil
+}