package daemon // import "github.com/docker/docker/daemon" import ( "context" "fmt" "github.com/docker/docker/api/server/router/system" "github.com/docker/docker/api/types" "golang.org/x/sync/errgroup" ) // ContainerDiskUsage returns information about container data disk usage. func (daemon *Daemon) ContainerDiskUsage(ctx context.Context) ([]*types.Container, error) { ch := daemon.usage.DoChan("ContainerDiskUsage", func() (interface{}, error) { // Retrieve container list containers, err := daemon.Containers(&types.ContainerListOptions{ Size: true, All: true, }) if err != nil { return nil, fmt.Errorf("failed to retrieve container list: %v", err) } return containers, nil }) select { case <-ctx.Done(): return nil, ctx.Err() case res := <-ch: if res.Err != nil { return nil, res.Err } return res.Val.([]*types.Container), nil } } // SystemDiskUsage returns information about the daemon data disk usage. // Callers must not mutate contents of the returned fields. func (daemon *Daemon) SystemDiskUsage(ctx context.Context, opts system.DiskUsageOptions) (*types.DiskUsage, error) { eg, ctx := errgroup.WithContext(ctx) var containers []*types.Container if opts.Containers { eg.Go(func() error { var err error containers, err = daemon.ContainerDiskUsage(ctx) return err }) } var ( images []*types.ImageSummary layersSize int64 ) if opts.Images { eg.Go(func() error { var err error images, err = daemon.imageService.ImageDiskUsage(ctx) return err }) eg.Go(func() error { var err error layersSize, err = daemon.imageService.LayerDiskUsage(ctx) return err }) } var volumes []*types.Volume if opts.Volumes { eg.Go(func() error { var err error volumes, err = daemon.volumes.LocalVolumesSize(ctx) return err }) } if err := eg.Wait(); err != nil { return nil, err } return &types.DiskUsage{ LayersSize: layersSize, Containers: containers, Volumes: volumes, Images: images, }, nil }