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77 lines
1.7 KiB
77 lines
1.7 KiB
// +build !nofilesystem
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package collector
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import (
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"bufio"
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"fmt"
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"os"
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"strings"
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"syscall"
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"github.com/prometheus/log"
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)
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const (
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defIgnoredMountPoints = "^/(sys|proc|dev)($|/)"
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)
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var (
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filesystemLabelNames = []string{"device", "mountpoint", "fstype"}
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)
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type filesystemDetails struct {
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device string
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mountPoint string
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fsType string
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}
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// Expose filesystem fullness.
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func (c *filesystemCollector) GetStats() (stats []filesystemStats, err error) {
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mpds, err := mountPointDetails()
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if err != nil {
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return nil, err
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}
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stats = []filesystemStats{}
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for _, mpd := range mpds {
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if c.ignoredMountPointsPattern.MatchString(mpd.mountPoint) {
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log.Debugf("Ignoring mount point: %s", mpd.mountPoint)
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continue
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}
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buf := new(syscall.Statfs_t)
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err := syscall.Statfs(mpd.mountPoint, buf)
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if err != nil {
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return nil, fmt.Errorf("Statfs on %s returned %s",
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mpd.mountPoint, err)
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}
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labelValues := []string{mpd.device, mpd.mountPoint, mpd.fsType}
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stats = append(stats, filesystemStats{
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labelValues: labelValues,
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size: float64(buf.Blocks) * float64(buf.Bsize),
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free: float64(buf.Bfree) * float64(buf.Bsize),
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avail: float64(buf.Bavail) * float64(buf.Bsize),
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files: float64(buf.Files),
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filesFree: float64(buf.Ffree),
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})
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}
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return stats, nil
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}
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func mountPointDetails() ([]filesystemDetails, error) {
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file, err := os.Open(procFilePath("mounts"))
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if err != nil {
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return nil, err
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}
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defer file.Close()
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filesystems := []filesystemDetails{}
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scanner := bufio.NewScanner(file)
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for scanner.Scan() {
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parts := strings.Fields(scanner.Text())
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filesystems = append(filesystems, filesystemDetails{parts[0], parts[1], parts[2]})
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}
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return filesystems, nil
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}
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