Julius Volz
8 years ago
committed by
GitHub
6 changed files with 182 additions and 143 deletions
@ -0,0 +1,88 @@
|
||||
// Copyright 2015 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 !nofilesystem
|
||||
|
||||
package collector |
||||
|
||||
import ( |
||||
"bytes" |
||||
"unsafe" |
||||
|
||||
"github.com/prometheus/common/log" |
||||
"golang.org/x/sys/unix" |
||||
) |
||||
|
||||
const ( |
||||
defIgnoredMountPoints = "^/(dev)($|/)" |
||||
defIgnoredFSTypes = "^devfs$" |
||||
MNT_RDONLY = 0x1 |
||||
MNT_NOWAIT = 0x2 |
||||
) |
||||
|
||||
func gostring(b []int8) string { |
||||
bb := *(*[]byte)(unsafe.Pointer(&b)) |
||||
idx := bytes.IndexByte(bb, 0) |
||||
if idx < 0 { |
||||
return "" |
||||
} |
||||
return string(bb[:idx]) |
||||
} |
||||
|
||||
// Expose filesystem fullness.
|
||||
func (c *filesystemCollector) GetStats() (stats []filesystemStats, err error) { |
||||
buf := make([]unix.Statfs_t, 16) |
||||
for { |
||||
n, err := unix.Getfsstat(buf, MNT_NOWAIT) |
||||
if err != nil { |
||||
return nil, err |
||||
} |
||||
if n < len(buf) { |
||||
buf = buf[:n] |
||||
break |
||||
} |
||||
buf = make([]unix.Statfs_t, len(buf)*2) |
||||
} |
||||
stats = []filesystemStats{} |
||||
for _, fs := range buf { |
||||
mountpoint := gostring(fs.Mntonname[:]) |
||||
if c.ignoredMountPointsPattern.MatchString(mountpoint) { |
||||
log.Debugf("Ignoring mount point: %s", mountpoint) |
||||
continue |
||||
} |
||||
|
||||
device := gostring(fs.Mntfromname[:]) |
||||
fstype := gostring(fs.Fstypename[:]) |
||||
if c.ignoredFSTypesPattern.MatchString(fstype) { |
||||
log.Debugf("Ignoring fs type: %s", fstype) |
||||
continue |
||||
} |
||||
|
||||
var ro float64 |
||||
if (fs.Flags & MNT_RDONLY) != 0 { |
||||
ro = 1 |
||||
} |
||||
|
||||
labelValues := []string{device, mountpoint, fstype} |
||||
stats = append(stats, filesystemStats{ |
||||
labelValues: labelValues, |
||||
size: float64(fs.Blocks) * float64(fs.Bsize), |
||||
free: float64(fs.Bfree) * float64(fs.Bsize), |
||||
avail: float64(fs.Bavail) * float64(fs.Bsize), |
||||
files: float64(fs.Files), |
||||
filesFree: float64(fs.Ffree), |
||||
ro: ro, |
||||
}) |
||||
} |
||||
return stats, nil |
||||
} |
||||
@ -0,0 +1,27 @@
|
||||
// +build !noloadavg
|
||||
|
||||
package collector |
||||
|
||||
import ( |
||||
"unsafe" |
||||
|
||||
"golang.org/x/sys/unix" |
||||
) |
||||
|
||||
func getLoad() ([]float64, error) { |
||||
type loadavg struct { |
||||
load [3]uint32 |
||||
scale int |
||||
} |
||||
b, err := unix.SysctlRaw("vm.loadavg") |
||||
if err != nil { |
||||
return nil, err |
||||
} |
||||
load := *(*loadavg)(unsafe.Pointer((&b[0]))) |
||||
scale := float64(load.scale) |
||||
return []float64{ |
||||
float64(load.load[0]) / scale, |
||||
float64(load.load[1]) / scale, |
||||
float64(load.load[2]) / scale, |
||||
}, nil |
||||
} |
||||
Loading…
Reference in new issue