82 lines
2.0 KiB
Go
82 lines
2.0 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.
|
|
|
|
package procfs
|
|
|
|
import (
|
|
"bufio"
|
|
"fmt"
|
|
"io"
|
|
"os"
|
|
|
|
"github.com/prometheus/procfs/iostats"
|
|
)
|
|
|
|
const (
|
|
diskstatsFilename = "diskstats"
|
|
statFormat = "%d %d %s %d %d %d %d %d %d %d %d %d %d %d %d %d %d %d"
|
|
)
|
|
|
|
// NewDiskstats reads the diskstats file and returns
|
|
// an array of Diskstats (one per line/device)
|
|
func NewDiskstats() ([]iostats.IODeviceStats, error) {
|
|
fs, err := NewFS(DefaultMountPoint)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return fs.NewDiskstats()
|
|
}
|
|
|
|
// NewDiskstats reads the diskstats file and returns
|
|
// an array of Diskstats (one per line/device)
|
|
func (fs FS) NewDiskstats() ([]iostats.IODeviceStats, error) {
|
|
file, err := os.Open(fs.Path(diskstatsFilename))
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
defer file.Close()
|
|
|
|
diskstats := []iostats.IODeviceStats{}
|
|
scanner := bufio.NewScanner(file)
|
|
for scanner.Scan() {
|
|
d := &iostats.IODeviceStats{}
|
|
count, err := fmt.Sscanf(scanner.Text(), statFormat,
|
|
&d.MajorNumber,
|
|
&d.MinorNumber,
|
|
&d.DeviceName,
|
|
&d.ReadIOs,
|
|
&d.ReadMerges,
|
|
&d.ReadSectors,
|
|
&d.ReadTicks,
|
|
&d.WriteIOs,
|
|
&d.WriteMerges,
|
|
&d.WriteSectors,
|
|
&d.WriteTicks,
|
|
&d.IOsInProgress,
|
|
&d.IOsTotalTicks,
|
|
&d.WeightedIOTicks,
|
|
&d.DiscardIOs,
|
|
&d.DiscardMerges,
|
|
&d.DiscardSectors,
|
|
&d.DiscardTicks)
|
|
if err != nil && err != io.EOF {
|
|
return diskstats, err
|
|
}
|
|
if count == 14 || count == 18 {
|
|
diskstats = append(diskstats, *d)
|
|
}
|
|
}
|
|
return diskstats, nil
|
|
}
|