// filterNetworks filters network list according to user specified filter // and returns user chosen networks func filterNetworks(nws []types.NetworkResource, filter filters.Args) ([]types.NetworkResource, error) { // if filter is empty, return original network list if filter.Len() == 0 { return nws, nil } if err := filter.Validate(acceptedNetworkFilters); err != nil { return nil, err } displayNet := []types.NetworkResource{} for _, nw := range nws { if filter.Include("driver") { if !filter.ExactMatch("driver", nw.Driver) { continue } } if filter.Include("name") { if !filter.Match("name", nw.Name) { continue } } if filter.Include("id") { if !filter.Match("id", nw.ID) { continue } } if filter.Include("label") { if !filter.MatchKVList("label", nw.Labels) { continue } } displayNet = append(displayNet, nw) } if filter.Include("type") { var typeNet []types.NetworkResource errFilter := filter.WalkValues("type", func(fval string) error { passList, err := filterNetworkByType(displayNet, fval) if err != nil { return err } typeNet = append(typeNet, passList...) return nil }) if errFilter != nil { return nil, errFilter } displayNet = typeNet } return displayNet, nil }
// filterAllNetworks filter network list according to user specified filter // and return user chosen networks func filterNetworks(nws []libnetwork.Network, filter filters.Args) ([]libnetwork.Network, error) { // if filter is empty, return original network list if filter.Len() == 0 { return nws, nil } var displayNet []libnetwork.Network for fkey, fhandler := range supportedFilters { errFilter := filter.WalkValues(fkey, func(fval string) error { passList, err := fhandler(nws, fval) if err != nil { return err } displayNet = append(displayNet, passList...) return nil }) if errFilter != nil { return nil, errFilter } } return displayNet, nil }
// Images returns a filtered list of images. filterArgs is a JSON-encoded set // of filter arguments which will be interpreted by api/types/filters. // filter is a shell glob string applied to repository names. The argument // named all controls whether all images in the graph are filtered, or just // the heads. func (daemon *Daemon) Images(imageFilters filters.Args, all bool, withExtraAttrs bool) ([]*types.ImageSummary, error) { var ( allImages map[image.ID]*image.Image err error danglingOnly = false ) if err := imageFilters.Validate(acceptedImageFilterTags); err != nil { return nil, err } if imageFilters.Include("dangling") { if imageFilters.ExactMatch("dangling", "true") { danglingOnly = true } else if !imageFilters.ExactMatch("dangling", "false") { return nil, fmt.Errorf("Invalid filter 'dangling=%s'", imageFilters.Get("dangling")) } } if danglingOnly { allImages = daemon.imageStore.Heads() } else { allImages = daemon.imageStore.Map() } var beforeFilter, sinceFilter *image.Image err = imageFilters.WalkValues("before", func(value string) error { beforeFilter, err = daemon.GetImage(value) return err }) if err != nil { return nil, err } err = imageFilters.WalkValues("since", func(value string) error { sinceFilter, err = daemon.GetImage(value) return err }) if err != nil { return nil, err } images := []*types.ImageSummary{} var imagesMap map[*image.Image]*types.ImageSummary var layerRefs map[layer.ChainID]int var allLayers map[layer.ChainID]layer.Layer var allContainers []*container.Container for id, img := range allImages { if beforeFilter != nil { if img.Created.Equal(beforeFilter.Created) || img.Created.After(beforeFilter.Created) { continue } } if sinceFilter != nil { if img.Created.Equal(sinceFilter.Created) || img.Created.Before(sinceFilter.Created) { continue } } if imageFilters.Include("label") { // Very old image that do not have image.Config (or even labels) if img.Config == nil { continue } // We are now sure image.Config is not nil if !imageFilters.MatchKVList("label", img.Config.Labels) { continue } } layerID := img.RootFS.ChainID() var size int64 if layerID != "" { l, err := daemon.layerStore.Get(layerID) if err != nil { return nil, err } size, err = l.Size() layer.ReleaseAndLog(daemon.layerStore, l) if err != nil { return nil, err } } newImage := newImage(img, size) for _, ref := range daemon.referenceStore.References(id.Digest()) { if imageFilters.Include("reference") { var found bool var matchErr error for _, pattern := range imageFilters.Get("reference") { found, matchErr = reference.Match(pattern, ref) if matchErr != nil { return nil, matchErr } } if !found { continue } } if _, ok := ref.(reference.Canonical); ok { newImage.RepoDigests = append(newImage.RepoDigests, ref.String()) } if _, ok := ref.(reference.NamedTagged); ok { newImage.RepoTags = append(newImage.RepoTags, ref.String()) } } if newImage.RepoDigests == nil && newImage.RepoTags == nil { if all || len(daemon.imageStore.Children(id)) == 0 { if imageFilters.Include("dangling") && !danglingOnly { //dangling=false case, so dangling image is not needed continue } if imageFilters.Include("reference") { // skip images with no references if filtering by reference continue } newImage.RepoDigests = []string{"<none>@<none>"} newImage.RepoTags = []string{"<none>:<none>"} } else { continue } } else if danglingOnly && len(newImage.RepoTags) > 0 { continue } if withExtraAttrs { // lazyly init variables if imagesMap == nil { allContainers = daemon.List() allLayers = daemon.layerStore.Map() imagesMap = make(map[*image.Image]*types.ImageSummary) layerRefs = make(map[layer.ChainID]int) } // Get container count newImage.Containers = 0 for _, c := range allContainers { if c.ImageID == id { newImage.Containers++ } } // count layer references rootFS := *img.RootFS rootFS.DiffIDs = nil for _, id := range img.RootFS.DiffIDs { rootFS.Append(id) chid := rootFS.ChainID() layerRefs[chid]++ if _, ok := allLayers[chid]; !ok { return nil, fmt.Errorf("layer %v was not found (corruption?)", chid) } } imagesMap[img] = newImage } images = append(images, newImage) } if withExtraAttrs { // Get Shared and Unique sizes for img, newImage := range imagesMap { rootFS := *img.RootFS rootFS.DiffIDs = nil newImage.SharedSize = 0 for _, id := range img.RootFS.DiffIDs { rootFS.Append(id) chid := rootFS.ChainID() diffSize, err := allLayers[chid].DiffSize() if err != nil { return nil, err } if layerRefs[chid] > 1 { newImage.SharedSize += diffSize } } } } sort.Sort(sort.Reverse(byCreated(images))) return images, nil }