forked from resourced/resourced
/
du.go
107 lines (89 loc) · 2.1 KB
/
du.go
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package readers
import (
"encoding/json"
"errors"
"fmt"
"os"
"strings"
"github.com/cloudfoundry/gosigar"
gopsutil_disk "github.com/shirou/gopsutil/disk"
)
func init() {
Register("Du", NewDu)
}
func NewDu() IReader {
d := &Du{}
d.Data = make(map[string]map[string]interface{})
return d
}
// Df is a reader that scrapes disk usage data and presents it in the form similar to `du`.
// Data sources:
// * https://github.com/cloudfoundry/gosigar/tree/master
// * https://github.com/shirou/gopsutil/tree/master/disk
type Du struct {
Data map[string]map[string]interface{}
FSPaths string
}
func (d *Du) buildData(path string) error {
path = strings.TrimSpace(path)
pathStat, err := os.Stat(path)
if err != nil {
return err
}
if !pathStat.IsDir() {
return errors.New(fmt.Sprintf("%v is not a directory.", path))
}
duStat, err := gopsutil_disk.Usage(path)
if err == nil {
d.Data[path] = make(map[string]interface{})
d.Data[path]["Path"] = duStat.Path
d.Data[path]["Total"] = duStat.Total
d.Data[path]["Free"] = duStat.Free
d.Data[path]["InodesTotal"] = duStat.InodesTotal
d.Data[path]["InodesFree"] = duStat.InodesFree
d.Data[path]["InodesUsed"] = duStat.InodesUsed
d.Data[path]["Used"] = duStat.Used
if duStat.InodesTotal != 0 {
d.Data[path]["InodesUsedPercent"] = duStat.InodesUsedPercent
}
if duStat.Total != 0 {
d.Data[path]["UsedPercent"] = duStat.UsedPercent
}
}
return err
}
func (d *Du) runDefault() error {
fslist := sigar.FileSystemList{}
err := fslist.Get()
if err != nil {
return err
}
for _, fs := range fslist.List {
err := d.buildData(fs.DirName)
if err == nil {
d.Data[fs.DirName]["DeviceName"] = fs.DevName
}
}
return nil
}
func (d *Du) runCustomPaths() error {
for _, path := range strings.Split(d.FSPaths, ",") {
d.buildData(path)
}
return nil
}
// Run gathers du information.
func (d *Du) Run() error {
err := d.runDefault()
if err != nil {
return err
}
if d.FSPaths != "" {
err = d.runCustomPaths()
}
return err
}
// ToJson serialize Data field to JSON.
func (d *Du) ToJson() ([]byte, error) {
return json.Marshal(d.Data)
}