21e6eeffb9
This one is a problem because the most useful stat is a string and not a float like verything else. We may have to change the return type Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
62 lines
1.2 KiB
Go
62 lines
1.2 KiB
Go
package fs
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import (
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"fmt"
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"github.com/dotcloud/docker/pkg/cgroups"
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"io/ioutil"
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"os"
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"path/filepath"
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"strconv"
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"strings"
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)
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type freezerGroup struct {
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}
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func (s *freezerGroup) Set(d *data) error {
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// we just want to join this group even though we don't set anything
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if _, err := d.join("freezer"); err != nil && err != cgroups.ErrNotFound {
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return err
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}
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return nil
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}
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func (s *freezerGroup) Remove(d *data) error {
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return removePath(d.path("freezer"))
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}
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func (s *freezerGroup) Stats(d *data) (map[string]float64, error) {
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var (
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paramData = make(map[string]float64)
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params = []string{
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"parent_freezing",
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"self_freezing",
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// comment out right now because this is string "state",
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}
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)
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path, err := d.path("freezer")
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if err != nil {
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return nil, err
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}
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for _, param := range params {
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f, err := os.Open(filepath.Join(path, fmt.Sprintf("freezer.%s", param)))
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if err != nil {
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return nil, err
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}
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defer f.Close()
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data, err := ioutil.ReadAll(f)
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if err != nil {
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return nil, err
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}
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v, err := strconv.ParseFloat(strings.TrimSuffix(string(data), "\n"), 64)
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if err != nil {
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return nil, err
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}
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paramData[param] = v
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}
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return paramData, nil
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}
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