Merge branch 'pr/13' into only_labelled
This commit is contained in:
Nate Jones
commit
b86486fdbc
5 changed files with 167 additions and 100 deletions
70
README.md
70
README.md
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@ -34,10 +34,20 @@ Image info is visualized with lines indicating parent images:
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```
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$ dockviz images -d | dot -Tpng -o images.png
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OR
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$ dockviz images --dot | dot -Tpng -o images.png
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```
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```
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$ dockviz images -d -l | dot -Tpng -o images.png
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OR
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$ dockviz images --dot -only-labeled | dot -Tpng -o images.png
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```
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Or in short form:
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```
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@ -52,35 +62,47 @@ Or as a tree in the terminal:
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```
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$ dockviz images -t
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└─511136ea3c5a Virtual Size: 0.0 B
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|─f10ebce2c0e1 Virtual Size: 103.7 MB
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| └─82cdea7ab5b5 Virtual Size: 103.9 MB
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| └─5dbd9cb5a02f Virtual Size: 103.9 MB
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| └─74fe38d11401 Virtual Size: 209.6 MB Tags: ubuntu:12.04, ubuntu:precise
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|─ef519c9ee91a Virtual Size: 100.9 MB
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| └─07302703becc Virtual Size: 101.2 MB
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| └─cf8dc907452c Virtual Size: 101.2 MB
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| └─a7cf8ae4e998 Virtual Size: 171.3 MB Tags: ubuntu:12.10, ubuntu:quantal
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| |─e18d8001204e Virtual Size: 171.3 MB
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| | └─d0525208a46c Virtual Size: 171.3 MB
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| | └─59dac4bae93b Virtual Size: 242.5 MB
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| | └─89541b3b35f2 Virtual Size: 511.8 MB
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| | └─7dac4e98548e Virtual Size: 511.8 MB
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| | └─341d0cc3fac8 Virtual Size: 511.8 MB
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| | └─2f96171d2098 Virtual Size: 511.8 MB
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| | └─67b8b7262a67 Virtual Size: 513.7 MB
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| | └─0fe9a2bc50fe Virtual Size: 513.7 MB
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| | └─8c32832f07ba Virtual Size: 513.7 MB
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| | └─cc4e1358bc80 Virtual Size: 513.7 MB
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| | └─5c0d04fba9df Virtual Size: 513.7 MB Tags: nate/mongodb:latest
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| └─398d592f2009 Virtual Size: 242.2 MB
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| └─0cd8e7f50270 Virtual Size: 243.6 MB
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| └─594b6f8e6f92 Virtual Size: 243.6 MB
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| └─f832a63e87a4 Virtual Size: 243.6 MB Tags: redis:latest
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├─f10ebce2c0e1 Virtual Size: 103.7 MB
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│ └─82cdea7ab5b5 Virtual Size: 103.9 MB
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│ └─5dbd9cb5a02f Virtual Size: 103.9 MB
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│ └─74fe38d11401 Virtual Size: 209.6 MB Tags: ubuntu:12.04, ubuntu:precise
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├─ef519c9ee91a Virtual Size: 100.9 MB
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│ └─07302703becc Virtual Size: 101.2 MB
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│ └─cf8dc907452c Virtual Size: 101.2 MB
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│ └─a7cf8ae4e998 Virtual Size: 171.3 MB Tags: ubuntu:12.10, ubuntu:quantal
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│ │─e18d8001204e Virtual Size: 171.3 MB
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│ │ └─d0525208a46c Virtual Size: 171.3 MB
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│ │ └─59dac4bae93b Virtual Size: 242.5 MB
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│ │ └─89541b3b35f2 Virtual Size: 511.8 MB
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│ │ └─7dac4e98548e Virtual Size: 511.8 MB
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│ │ └─341d0cc3fac8 Virtual Size: 511.8 MB
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│ │ └─2f96171d2098 Virtual Size: 511.8 MB
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│ │ └─67b8b7262a67 Virtual Size: 513.7 MB
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│ │ └─0fe9a2bc50fe Virtual Size: 513.7 MB
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│ │ └─8c32832f07ba Virtual Size: 513.7 MB
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│ │ └─cc4e1358bc80 Virtual Size: 513.7 MB
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│ │ └─5c0d04fba9df Virtual Size: 513.7 MB Tags: nate/mongodb:latest
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│ └─398d592f2009 Virtual Size: 242.2 MB
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│ └─0cd8e7f50270 Virtual Size: 243.6 MB
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│ └─594b6f8e6f92 Virtual Size: 243.6 MB
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│ └─f832a63e87a4 Virtual Size: 243.6 MB Tags: redis:latest
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└─02dae1c13f51 Virtual Size: 98.3 MB
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└─e7206bfc66aa Virtual Size: 98.5 MB
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└─cb12405ee8fa Virtual Size: 98.5 MB
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└─316b678ddf48 Virtual Size: 169.4 MB Tags: ubuntu:13.04, ubuntu:raring
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```
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```
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$ dockviz images -t -l
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└─511136ea3c5a Virtual Size: 0.0 B
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├─f10ebce2c0e1 Virtual Size: 103.7 MB
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│ └─74fe38d11401 Virtual Size: 209.6 MB Tags: ubuntu:12.04, ubuntu:precise
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├─ef519c9ee91a Virtual Size: 100.9 MB
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│ └─a7cf8ae4e998 Virtual Size: 171.3 MB Tags: ubuntu:12.10, ubuntu:quantal
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│ ├─5c0d04fba9df Virtual Size: 513.7 MB Tags: nate/mongodb:latest
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│ └─f832a63e87a4 Virtual Size: 243.6 MB Tags: redis:latest
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└─02dae1c13f51 Virtual Size: 98.3 MB
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└─316b678ddf48 Virtual Size: 169.4 MB Tags: ubuntu:13.04, ubuntu:raring
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```
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# Running
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171
images.go
171
images.go
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@ -21,16 +21,17 @@ type Image struct {
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}
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type ImagesCommand struct {
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Dot bool `short:"d" long:"dot" description:"Show image information as Graphviz dot."`
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Tree bool `short:"t" long:"tree" description:"Show image information as tree."`
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Dot bool `short:"d" long:"dot" description:"Show image information as Graphviz dot. You can add a start image id or name -d/--dot [id/name]"`
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Tree bool `short:"t" long:"tree" description:"Show image information as tree. You can add a start image id or name -t/--tree [id/name]"`
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Short bool `short:"s" long:"short" description:"Show short summary of images (repo name and list of tags)."`
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NoTruncate bool `short:"n" long:"no-trunc" description:"Don't truncate the image IDs."`
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OnlyLabelled bool `short:"l" long:"only-labelled" description:"Print only labelled images/containers."`
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}
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var imagesCommand ImagesCommand
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func (x *ImagesCommand) Execute(args []string) error {
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func (x *ImagesCommand) Execute(args []string) error {
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var images *[]Image
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stat, err := os.Stdin.Stat()
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@ -82,50 +83,76 @@ func (x *ImagesCommand) Execute(args []string) error {
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images = &ims
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}
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if imagesCommand.Dot {
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fmt.Printf(jsonToDot(images))
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} else if imagesCommand.Tree {
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var startImage = ""
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if imagesCommand.Tree || imagesCommand.Dot {
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var startImage *Image
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if len(args) > 0 {
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// attempt to find the start image, which can be specified as an
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// image ID or a repository name
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startImageArg := args[0]
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startImageRepo := args[0]
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// in case a repo name was specified, append ":latest" if it isn't
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// already there
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if !strings.HasSuffix(startImageRepo, ":latest") {
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// if tag is not defined, find by :latest tag
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if strings.Index(startImageRepo, ":") == -1 {
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startImageRepo = fmt.Sprintf("%s:latest", startImageRepo)
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}
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IMAGES:
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for _, image := range *images {
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// check if the start image arg matches an image id
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// find by image id
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if strings.Index(image.Id, startImageArg) == 0 {
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startImage = image.Id
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startImage = &image
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break IMAGES
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}
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// check if the start image arg matches an repository name
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if image.RepoTags[0] != "<none>:<none>" {
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// find by image name (name and tag)
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for _, repotag := range image.RepoTags {
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if repotag == startImageRepo {
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startImage = image.Id
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startImage = &image
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break IMAGES
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}
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}
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}
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}
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if startImage == "" {
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return fmt.Errorf("Unable to find image %s.", startImageArg)
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if startImage == nil {
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return fmt.Errorf("Unable to find image %s = %s.", startImageArg, startImageRepo)
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}
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}
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fmt.Printf(jsonToTree(images, startImage, imagesCommand.NoTruncate))
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// select the start image of the tree
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var roots []Image
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if startImage == nil {
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roots = collectRoots(images)
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} else {
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startImage.ParentId = ""
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roots = []Image{*startImage}
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}
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// build helper map (image -> children)
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var imagesByParent = make(map[string][]Image)
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imagesByParent = collectChildren(images);
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// image ids truncate
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// initialize image informations
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// filter images
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if imagesCommand.OnlyLabelled{
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*images, imagesByParent = filterImages(images, &imagesByParent)
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}
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var buffer bytes.Buffer
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if imagesCommand.Tree {
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jsonToText(&buffer, imagesCommand.NoTruncate, roots, imagesByParent, "")
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}
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if imagesCommand.Dot {
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buffer.WriteString("digraph docker {\n")
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imagesToDot(&buffer, roots, imagesByParent)
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buffer.WriteString(" base [style=invisible]\n}\n")
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buffer.String()
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}
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fmt.Print(buffer.String())
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} else if imagesCommand.Short {
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fmt.Printf(jsonToShort(images))
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} else {
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@ -135,72 +162,90 @@ func (x *ImagesCommand) Execute(args []string) error {
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return nil
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}
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func jsonToTree(images *[]Image, startImageArg string, noTrunc bool) string {
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var buffer bytes.Buffer
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var startImage Image
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func collectChildren(images *[]Image) map[string][]Image {
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var imagesByParent = make(map[string][]Image)
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for _, image := range *images {
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if children, exists := imagesByParent[image.ParentId]; exists {
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imagesByParent[image.ParentId] = append(children, image)
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} else {
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imagesByParent[image.ParentId] = []Image{image}
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}
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}
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return imagesByParent
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}
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func collectRoots(images *[]Image) []Image {
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var roots []Image
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var byParent = make(map[string][]Image)
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for _, image := range *images {
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if image.ParentId == "" {
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roots = append(roots, image)
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}
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}
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return roots
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}
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func filterImages (images *[]Image, byParent *map[string][]Image) (filteredImages []Image, filteredChildren map[string][]Image) {
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for i := 0; i<len(*images); i++ {
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// image is visible
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// 1. it has a label
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// 2. it is root
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// 3. it is a node
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var visible bool = (*images)[i].RepoTags[0] != "<none>:<none>" || (*images)[i].ParentId == "" || len((*byParent)[(*images)[i].Id]) > 1
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if visible {
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filteredImages = append(filteredImages, (*images)[i])
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} else {
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if children, exists := byParent[image.ParentId]; exists {
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byParent[image.ParentId] = append(children, image)
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} else {
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byParent[image.ParentId] = []Image{image}
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// change childs parent id
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// if items are filtered with only one child
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for j := 0; j<len(filteredImages); j++ {
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if filteredImages[j].ParentId == (*images)[i].Id {
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filteredImages[j].ParentId = (*images)[i].ParentId
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}
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}
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if startImageArg != "" {
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if startImageArg == image.Id || startImageArg == truncate(image.Id) {
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startImage = image
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}
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for _, repotag := range image.RepoTags {
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if repotag == startImageArg {
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startImage = image
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for j := 0; j<len(*images); j++ {
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if (*images)[j].ParentId == (*images)[i].Id {
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(*images)[j].ParentId = (*images)[i].ParentId
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}
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}
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}
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}
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if startImageArg != "" {
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WalkTree(&buffer, noTrunc, []Image{startImage}, byParent, "")
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} else {
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WalkTree(&buffer, noTrunc, roots, byParent, "")
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filteredChildren = collectChildren(&filteredImages)
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return filteredImages, filteredChildren
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}
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return buffer.String()
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}
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func WalkTree(buffer *bytes.Buffer, noTrunc bool, images []Image, byParent map[string][]Image, prefix string) {
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if len(images) > 1 {
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length := len(images)
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func jsonToText(buffer *bytes.Buffer, noTrunc bool, images []Image, byParent map[string][]Image, prefix string) {
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var length = len(images)
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if length > 1 {
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for index, image := range images {
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var nextPrefix string = ""
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if index+1 == length {
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PrintTreeNode(buffer, noTrunc, image, prefix+"└─")
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if subimages, exists := byParent[image.Id]; exists {
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WalkTree(buffer, noTrunc, subimages, byParent, prefix+" ")
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}
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nextPrefix = " "
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} else {
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PrintTreeNode(buffer, noTrunc, image, prefix+"├─")
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if subimages, exists := byParent[image.Id]; exists {
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WalkTree(buffer, noTrunc, subimages, byParent, prefix+"│ ")
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nextPrefix = "│ "
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}
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if subimages, exists := byParent[image.Id]; exists {
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jsonToText(buffer, noTrunc, subimages, byParent, prefix+nextPrefix)
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}
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}
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} else {
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for _, image := range images {
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PrintTreeNode(buffer, noTrunc, image, prefix+"└─")
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if subimages, exists := byParent[image.Id]; exists {
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WalkTree(buffer, noTrunc, subimages, byParent, prefix+" ")
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jsonToText(buffer, noTrunc, subimages, byParent, prefix+" ")
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}
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}
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}
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}
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func PrintTreeNode(buffer *bytes.Buffer, noTrunc bool, image Image, prefix string) {
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var imageID string
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if noTrunc {
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@ -235,10 +280,12 @@ func humanSize(raw int64) string {
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return fmt.Sprintf("%.01f %s", rawFloat, sizes[ind])
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}
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func truncate(id string) string {
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return id[0:12]
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}
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func parseImagesJSON(rawJSON []byte) (*[]Image, error) {
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var images []Image
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@ -251,12 +298,9 @@ func parseImagesJSON(rawJSON []byte) (*[]Image, error) {
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return &images, nil
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}
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func jsonToDot(images *[]Image) string {
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var buffer bytes.Buffer
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buffer.WriteString("digraph docker {\n")
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for _, image := range *images {
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func imagesToDot(buffer *bytes.Buffer, images []Image, byParent map[string][]Image) {
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for _, image := range images {
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if image.ParentId == "" {
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buffer.WriteString(fmt.Sprintf(" base -> \"%s\" [style=invis]\n", truncate(image.Id)))
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} else {
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@ -265,12 +309,12 @@ func jsonToDot(images *[]Image) string {
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if image.RepoTags[0] != "<none>:<none>" {
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buffer.WriteString(fmt.Sprintf(" \"%s\" [label=\"%s\\n%s\",shape=box,fillcolor=\"paleturquoise\",style=\"filled,rounded\"];\n", truncate(image.Id), truncate(image.Id), strings.Join(image.RepoTags, "\\n")))
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}
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if subimages, exists := byParent[image.Id]; exists {
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imagesToDot(buffer, subimages, byParent)
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}
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}
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}
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buffer.WriteString(" base [style=invisible]\n}\n")
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return buffer.String()
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}
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func jsonToShort(images *[]Image) string {
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var buffer bytes.Buffer
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|
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@ -303,6 +347,7 @@ func jsonToShort(images *[]Image) string {
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return buffer.String()
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}
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func init() {
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parser.AddCommand("images",
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"Visualize docker images.",
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|
|
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BIN
images_only_labeled.png
Normal file
BIN
images_only_labeled.png
Normal file
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After Width: | Height: | Size: 17 KiB |
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Before Width: | Height: | Size: 157 KiB After Width: | Height: | Size: 88 KiB |
BIN
sample/images_only_labeled.png
Normal file
BIN
sample/images_only_labeled.png
Normal file
Binary file not shown.
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After Width: | Height: | Size: 17 KiB |
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