Add diskstats collector for OpenBSD (#1250)
* Add diskstats collector for OpenBSD Tested on i386 and amd64, OpenBSD 6.4 and -current. * Refactor diskstats collectors This moves common descriptors from Linux, Darwin, OpenBSD diskstats collectors into diskstats_common.go Signed-off-by: Ralf Horstmann <ralf+github@ackstorm.de>pull/1224/head^2
Ralf Horstmann
7 years ago
committed by
Ben Kochie
parent
d442108d7a
commit
3867ad5ab0
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// Copyright 2019 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// +build !nodiskstats
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// +build openbsd linux darwin
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package collector |
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import ( |
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"github.com/prometheus/client_golang/prometheus" |
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) |
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const ( |
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diskSubsystem = "disk" |
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) |
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var ( |
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diskLabelNames = []string{"device"} |
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readsCompletedDesc = prometheus.NewDesc( |
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prometheus.BuildFQName(namespace, diskSubsystem, "reads_completed_total"), |
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"The total number of reads completed successfully.", |
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diskLabelNames, nil, |
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) |
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readBytesDesc = prometheus.NewDesc( |
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prometheus.BuildFQName(namespace, diskSubsystem, "read_bytes_total"), |
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"The total number of bytes read successfully.", |
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diskLabelNames, nil, |
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) |
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writesCompletedDesc = prometheus.NewDesc( |
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prometheus.BuildFQName(namespace, diskSubsystem, "writes_completed_total"), |
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"The total number of writes completed successfully.", |
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diskLabelNames, nil, |
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) |
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writtenBytesDesc = prometheus.NewDesc( |
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prometheus.BuildFQName(namespace, diskSubsystem, "written_bytes_total"), |
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"The total number of bytes written successfully.", |
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diskLabelNames, nil, |
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) |
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ioTimeSecondsDesc = prometheus.NewDesc( |
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prometheus.BuildFQName(namespace, diskSubsystem, "io_time_seconds_total"), |
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"Total seconds spent doing I/Os.", |
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diskLabelNames, nil, |
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) |
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readTimeSecondsDesc = prometheus.NewDesc( |
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prometheus.BuildFQName(namespace, diskSubsystem, "read_time_seconds_total"), |
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"The total number of seconds spent by all reads.", |
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diskLabelNames, |
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nil, |
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) |
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writeTimeSecondsDesc = prometheus.NewDesc( |
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prometheus.BuildFQName(namespace, diskSubsystem, "write_time_seconds_total"), |
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"This is the total number of seconds spent by all writes.", |
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diskLabelNames, |
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nil, |
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) |
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) |
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@ -0,0 +1,74 @@ |
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// Copyright 2019 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// +build !nodiskstats
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package collector |
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import ( |
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"unsafe" |
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"github.com/prometheus/client_golang/prometheus" |
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"golang.org/x/sys/unix" |
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) |
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/* |
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#include <sys/types.h> |
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#include <sys/disk.h> |
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*/ |
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import "C" |
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type diskstatsCollector struct { |
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rxfer typedDesc |
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rbytes typedDesc |
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wxfer typedDesc |
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wbytes typedDesc |
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time typedDesc |
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} |
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func init() { |
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registerCollector("diskstats", defaultEnabled, NewDiskstatsCollector) |
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} |
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// NewDiskstatsCollector returns a new Collector exposing disk device stats.
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func NewDiskstatsCollector() (Collector, error) { |
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return &diskstatsCollector{ |
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rxfer: typedDesc{readsCompletedDesc, prometheus.CounterValue}, |
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rbytes: typedDesc{readBytesDesc, prometheus.CounterValue}, |
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wxfer: typedDesc{writesCompletedDesc, prometheus.CounterValue}, |
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wbytes: typedDesc{writtenBytesDesc, prometheus.CounterValue}, |
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time: typedDesc{ioTimeSecondsDesc, prometheus.CounterValue}, |
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}, nil |
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} |
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func (c *diskstatsCollector) Update(ch chan<- prometheus.Metric) (err error) { |
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diskstatsb, err := unix.SysctlRaw("hw.diskstats") |
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if err != nil { |
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return err |
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} |
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ndisks := len(diskstatsb) / C.sizeof_struct_diskstats |
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diskstats := *(*[]C.struct_diskstats)(unsafe.Pointer(&diskstatsb)) |
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for i := 0; i < ndisks; i++ { |
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diskname := C.GoString(&diskstats[i].ds_name[0]) |
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ch <- c.rxfer.mustNewConstMetric(float64(diskstats[i].ds_rxfer), diskname) |
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ch <- c.rbytes.mustNewConstMetric(float64(diskstats[i].ds_rbytes), diskname) |
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ch <- c.wxfer.mustNewConstMetric(float64(diskstats[i].ds_wxfer), diskname) |
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ch <- c.wbytes.mustNewConstMetric(float64(diskstats[i].ds_wbytes), diskname) |
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time := float64(diskstats[i].ds_time.tv_sec) + float64(diskstats[i].ds_time.tv_usec)/1000000 |
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ch <- c.time.mustNewConstMetric(time, diskname) |
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} |
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return nil |
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} |
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