mirror of
https://github.com/prometheus/node_exporter.git
synced 2024-12-24 03:06:35 +01:00
98 lines
2.6 KiB
Go
98 lines
2.6 KiB
Go
// 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 (
|
|
"bufio"
|
|
"os"
|
|
"strings"
|
|
"syscall"
|
|
|
|
"github.com/prometheus/common/log"
|
|
)
|
|
|
|
const (
|
|
defIgnoredMountPoints = "^/(dev|proc|sys|var/lib/docker)($|/)"
|
|
defIgnoredFSTypes = "^(autofs|binfmt_misc|cgroup|configfs|debugfs|devpts|devtmpfs|fusectl|hugetlbfs|mqueue|proc|procfs|pstore|rpc_pipefs|securityfs|sysfs|tracefs)$"
|
|
readOnly = 0x1 // ST_RDONLY
|
|
)
|
|
|
|
// GetStats returns filesystem stats.
|
|
func (c *filesystemCollector) GetStats() ([]filesystemStats, error) {
|
|
mps, err := mountPointDetails()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
stats := []filesystemStats{}
|
|
for _, labels := range mps {
|
|
if c.ignoredMountPointsPattern.MatchString(labels.mountPoint) {
|
|
log.Debugf("Ignoring mount point: %s", labels.mountPoint)
|
|
continue
|
|
}
|
|
if c.ignoredFSTypesPattern.MatchString(labels.fsType) {
|
|
log.Debugf("Ignoring fs type: %s", labels.fsType)
|
|
continue
|
|
}
|
|
|
|
buf := new(syscall.Statfs_t)
|
|
err := syscall.Statfs(labels.mountPoint, buf)
|
|
if err != nil {
|
|
stats = append(stats, filesystemStats{
|
|
labels: labels,
|
|
deviceError: 1,
|
|
})
|
|
log.Debugf("Error on statfs() system call for %q: %s", labels.mountPoint, err)
|
|
continue
|
|
}
|
|
|
|
var ro float64
|
|
if (buf.Flags & readOnly) != 0 {
|
|
ro = 1
|
|
}
|
|
|
|
stats = append(stats, filesystemStats{
|
|
labels: labels,
|
|
size: float64(buf.Blocks) * float64(buf.Bsize),
|
|
free: float64(buf.Bfree) * float64(buf.Bsize),
|
|
avail: float64(buf.Bavail) * float64(buf.Bsize),
|
|
files: float64(buf.Files),
|
|
filesFree: float64(buf.Ffree),
|
|
ro: ro,
|
|
})
|
|
}
|
|
return stats, nil
|
|
}
|
|
|
|
func mountPointDetails() ([]filesystemLabels, error) {
|
|
file, err := os.Open(procFilePath("mounts"))
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
defer file.Close()
|
|
|
|
filesystems := []filesystemLabels{}
|
|
scanner := bufio.NewScanner(file)
|
|
for scanner.Scan() {
|
|
parts := strings.Fields(scanner.Text())
|
|
filesystems = append(filesystems, filesystemLabels{
|
|
device: parts[0],
|
|
mountPoint: parts[1],
|
|
fsType: parts[2],
|
|
})
|
|
}
|
|
return filesystems, scanner.Err()
|
|
}
|