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moby--moby/daemon/disk_usage.go
Daniel Nephin 0dab53ff3c Move all daemon image methods into imageService
imageService provides the backend for the image API and handles the
imageStore, and referenceStore.

Signed-off-by: Daniel Nephin <dnephin@docker.com>
2018-02-26 16:48:29 -05:00

84 lines
2.2 KiB
Go

package daemon // import "github.com/docker/docker/daemon"
import (
"fmt"
"sync/atomic"
"golang.org/x/net/context"
"github.com/docker/docker/api/types"
"github.com/docker/docker/api/types/filters"
"github.com/docker/docker/pkg/directory"
"github.com/docker/docker/volume"
"github.com/sirupsen/logrus"
)
// SystemDiskUsage returns information about the daemon data disk usage
func (daemon *Daemon) SystemDiskUsage(ctx context.Context) (*types.DiskUsage, error) {
if !atomic.CompareAndSwapInt32(&daemon.diskUsageRunning, 0, 1) {
return nil, fmt.Errorf("a disk usage operation is already running")
}
defer atomic.StoreInt32(&daemon.diskUsageRunning, 0)
// Retrieve container list
allContainers, err := daemon.Containers(&types.ContainerListOptions{
Size: true,
All: true,
})
if err != nil {
return nil, fmt.Errorf("failed to retrieve container list: %v", err)
}
// Get all top images with extra attributes
allImages, err := daemon.imageService.Images(filters.NewArgs(), false, true)
if err != nil {
return nil, fmt.Errorf("failed to retrieve image list: %v", err)
}
// Get all local volumes
allVolumes := []*types.Volume{}
getLocalVols := func(v volume.Volume) error {
select {
case <-ctx.Done():
return ctx.Err()
default:
if d, ok := v.(volume.DetailedVolume); ok {
// skip local volumes with mount options since these could have external
// mounted filesystems that will be slow to enumerate.
if len(d.Options()) > 0 {
return nil
}
}
name := v.Name()
refs := daemon.volumes.Refs(v)
tv := volumeToAPIType(v)
sz, err := directory.Size(v.Path())
if err != nil {
logrus.Warnf("failed to determine size of volume %v", name)
sz = -1
}
tv.UsageData = &types.VolumeUsageData{Size: sz, RefCount: int64(len(refs))}
allVolumes = append(allVolumes, tv)
}
return nil
}
err = daemon.traverseLocalVolumes(getLocalVols)
if err != nil {
return nil, err
}
allLayersSize, err := daemon.imageService.LayerDiskUsage(ctx)
if err != nil {
return nil, err
}
return &types.DiskUsage{
LayersSize: allLayersSize,
Containers: allContainers,
Volumes: allVolumes,
Images: allImages,
}, nil
}