cmd/list: Implement the list command
Go's text/tabwriter package isn't aware of the ANSI Select Graphic Rendition (or SGR) escape sequences to change the terminal's foreground colour [1,2]. Using the sequences disrupt the alignment of the columns in the tabbed output. Therefore, unlike the existing POSIX shell implementation, running containers aren't marked in green in the Go version. [1] https://en.wikipedia.org/wiki/ANSI_escape_code [2] https://github.com/golang/go/issues/12073 https://github.com/containers/toolbox/pull/318
This commit is contained in:
Harry Míchal
Debarshi Ray
parent
f4d129ab4d
commit
c30d5549b6
143
src/cmd/list.go
143
src/cmd/list.go
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@ -17,10 +17,14 @@
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package cmd
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import (
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"errors"
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"fmt"
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"os"
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"text/tabwriter"
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"github.com/containers/toolbox/pkg/podman"
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"github.com/containers/toolbox/pkg/utils"
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"github.com/sirupsen/logrus"
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"github.com/spf13/cobra"
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)
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@ -57,9 +61,69 @@ func init() {
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}
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func list(cmd *cobra.Command, args []string) error {
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if utils.IsInsideContainer() {
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if !utils.IsInsideToolboxContainer() {
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return errors.New("this is not a toolbox container")
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}
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if _, err := utils.ForwardToHost(); err != nil {
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return err
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}
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return nil
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}
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lsContainers := true
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lsImages := true
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if !listFlags.onlyContainers && listFlags.onlyImages {
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lsContainers = false
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} else if listFlags.onlyContainers && !listFlags.onlyImages {
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lsImages = false
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}
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var images []map[string]interface{}
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var containers []map[string]interface{}
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var err error
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if lsImages {
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images, err = listImages()
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if err != nil {
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return err
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}
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}
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if lsContainers {
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containers, err = listContainers()
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if err != nil {
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return err
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}
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}
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listOutput(images, containers)
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return nil
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}
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func listContainers() ([]map[string]interface{}, error) {
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logrus.Debug("Fetching containers with label=com.redhat.component=fedora-toolbox")
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args := []string{"--all", "--filter", "label=com.redhat.component=fedora-toolbox"}
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containers_old, err := podman.GetContainers(args...)
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if err != nil {
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return nil, errors.New("failed to list containers with com.redhat.component=fedora-toolbox")
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}
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logrus.Debug("Fetching containers with label=com.github.debarshiray.toolbox=true")
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args = []string{"--all", "--filter", "label=com.github.debarshiray.toolbox=true"}
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containers_new, err := podman.GetContainers(args...)
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if err != nil {
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return nil, errors.New("failed to list containers with label=com.github.debarshiray.toolbox=true")
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}
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containers := utils.JoinJSON("ID", containers_old, containers_new)
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containers = utils.SortJSON(containers, "Names", false)
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return containers, nil
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}
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func listHelp(cmd *cobra.Command, args []string) {
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if utils.IsInsideContainer() {
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if !utils.IsInsideToolboxContainer() {
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@ -80,3 +144,82 @@ func listHelp(cmd *cobra.Command, args []string) {
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return
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}
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}
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func listImages() ([]map[string]interface{}, error) {
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logrus.Debug("Fetching images with label=com.redhat.component=fedora-toolbox")
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args := []string{"--filter", "label=com.redhat.component=fedora-toolbox"}
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images_old, err := podman.GetImages(args...)
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if err != nil {
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return nil, errors.New("failed to list images with com.redhat.component=fedora-toolbox")
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}
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logrus.Debug("Fetching images with label=com.github.debarshiray.toolbox=true")
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args = []string{"--filter", "label=com.github.debarshiray.toolbox=true"}
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images_new, err := podman.GetImages(args...)
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if err != nil {
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return nil, errors.New("failed to list images with com.github.debarshiray.toolbox=true")
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}
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var images []map[string]interface{}
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if podman.CheckVersion("1.8.3") {
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images = utils.JoinJSON("ID", images_old, images_new)
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images = utils.SortJSON(images, "Names", true)
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} else {
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images = utils.JoinJSON("id", images_old, images_new)
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images = utils.SortJSON(images, "names", true)
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}
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return images, nil
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}
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func listOutput(images, containers []map[string]interface{}) {
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if len(images) != 0 {
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writer := tabwriter.NewWriter(os.Stdout, 0, 0, 2, ' ', 0)
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fmt.Fprintf(writer, "%s\t%s\t%s\n", "IMAGE ID", "IMAGE NAME", "CREATED")
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var idKey, nameKey, createdKey string
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if podman.CheckVersion("1.8.3") {
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idKey = "ID"
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nameKey = "Names"
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createdKey = "Created"
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} else {
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idKey = "id"
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nameKey = "names"
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createdKey = "created"
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}
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for _, image := range images {
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id := utils.ShortID(image[idKey].(string))
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name := image[nameKey].([]interface{})[0].(string)
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created := image[createdKey].(string)
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fmt.Fprintf(writer, "%s\t%s\t%s\n", id, name, created)
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}
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writer.Flush()
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}
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if len(images) != 0 && len(containers) != 0 {
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fmt.Println()
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}
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if len(containers) != 0 {
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writer := tabwriter.NewWriter(os.Stdout, 0, 0, 2, ' ', 0)
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fmt.Fprintf(writer,
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"%s\t%s\t%s\t%s\t%s\n",
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"CONTAINER ID",
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"CONTAINER NAME",
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"CREATED",
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"STATUS",
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"IMAGE NAME")
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for _, container := range containers {
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id := container["ID"].(string)[:12]
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name := container["Names"].(string)
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created := container["Created"].(string)
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status := container["Status"].(string)
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imageName := container["Image"].(string)
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fmt.Fprintf(writer, "%s\t%s\t%s\t%s\t%s\n", id, name, created, status, imageName)
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}
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writer.Flush()
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}
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}
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