Add show command

cmd/devcontainerx/devcontainer.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"encoding/json"
 	"fmt"
 	"os"
 	"sort"
@@ -61,6 +62,54 @@ func createListCommand() *cobra.Command {
 	return cmdList
 }
 
+func createShowCommand() *cobra.Command {
+	var argDevcontainerName string
+	cmd := &cobra.Command{
+		Use:   "show --name <name>",
+		Short: "Show devcontainer info",
+		Long:  "Show information about a running dev container",
+		RunE: func(cmd *cobra.Command, args []string) error {
+			devcontainers, err := devcontainers.ListDevcontainers()
+			if err != nil {
+				return err
+			}
+			containerIDOrName := argDevcontainerName
+
+			// Get container ID
+			for _, devcontainer := range devcontainers {
+				if devcontainer.ContainerName == containerIDOrName ||
+					devcontainer.DevcontainerName == containerIDOrName ||
+					devcontainer.ContainerID == containerIDOrName {
+					output, err := json.MarshalIndent(devcontainer, "", "\t")
+					if err != nil {
+						return fmt.Errorf("Failed to serialise devcontainer info: %s", err)
+					}
+					fmt.Printf("%s\n", output)
+					return nil
+				}
+			}
+
+			return fmt.Errorf("Failed to find a matching (running) dev container for %q", containerIDOrName)
+		},
+	}
+	cmd.Flags().StringVarP(&argDevcontainerName, "name", "n", "", "name of dev container to exec into")
+
+	_ = cmd.RegisterFlagCompletionFunc("name", func(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
+		devcontainers, err := devcontainers.ListDevcontainers()
+		if err != nil {
+			os.Exit(1)
+		}
+		names := []string{}
+		for _, devcontainer := range devcontainers {
+			names = append(names, devcontainer.DevcontainerName)
+		}
+		sort.Strings(names)
+		return names, cobra.ShellCompDirectiveNoFileComp
+
+	})
+	return cmd
+}
+
 func countBooleans(values ...bool) int {
 	count := 0
 	for _, v := range values {
@@ -82,7 +131,7 @@ func createExecCommand() *cobra.Command {
 		Short: "Execute a command in a devcontainer",
 		Long:  "Execute a command in a devcontainer, similar to `docker exec`",
 		RunE: func(cmd *cobra.Command, args []string) error {
-
+			fmt.Printf("*** %q\n\n\n", argDevcontainerName)
 			// Default to executing /bin/bash
 			if len(args) == 0 {
 				args = []string{"/bin/bash"}

cmd/devcontainerx/main.go

@@ -27,6 +27,7 @@ func main() {
 	rootCmd.AddCommand(createConfigCommand())
 	rootCmd.AddCommand(createExecCommand())
 	rootCmd.AddCommand(createListCommand())
+	rootCmd.AddCommand(createShowCommand())
 	rootCmd.AddCommand(createTemplateCommand())
 	if config.GetExperimentalFeaturesEnabled() {
 		rootCmd.AddCommand(createSnippetCommand())

go.mod

@@ -6,11 +6,12 @@ require (
 	github.com/blang/semver v3.5.1+incompatible
 	github.com/bradford-hamilton/dora v0.1.1
 	github.com/kyoh86/richgo v0.3.12 // indirect
+	github.com/mattn/go-isatty v0.0.18 // indirect
 	github.com/rhysd/go-github-selfupdate v1.2.2
 	github.com/spf13/cobra v1.0.0
 	github.com/spf13/viper v1.4.0
 	github.com/stretchr/testify v1.8.2
-	golang.org/x/sys v0.6.0 // indirect
+	golang.org/x/sys v0.8.0 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
 )
 

go.sum

@@ -80,6 +80,8 @@ github.com/mattn/go-isatty v0.0.16 h1:bq3VjFmv/sOjHtdEhmkEV4x1AJtvUvOJ2PFAZ5+peK
 github.com/mattn/go-isatty v0.0.16/go.mod h1:kYGgaQfpe5nmfYZH+SKPsOc2e4SrIfOl2e/yFXSvRLM=
 github.com/mattn/go-isatty v0.0.17 h1:BTarxUcIeDqL27Mc+vyvdWYSL28zpIhv3RoTdsLMPng=
 github.com/mattn/go-isatty v0.0.17/go.mod h1:kYGgaQfpe5nmfYZH+SKPsOc2e4SrIfOl2e/yFXSvRLM=
+github.com/mattn/go-isatty v0.0.18 h1:DOKFKCQ7FNG2L1rbrmstDN4QVRdS89Nkh85u68Uwp98=
+github.com/mattn/go-isatty v0.0.18/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
 github.com/matttproud/golang_protobuf_extensions v1.0.1/go.mod h1:D8He9yQNgCq6Z5Ld7szi9bcBfOoFv/3dc6xSMkL2PC0=
 github.com/mitchellh/go-homedir v1.1.0/go.mod h1:SfyaCUpYCn1Vlf4IUYiD9fPX4A5wJrkLzIz1N1q0pr0=
 github.com/mitchellh/mapstructure v1.1.2 h1:fmNYVwqnSfB9mZU6OS2O6GsXM+wcskZDuKQzvN1EDeE=
@@ -190,6 +192,8 @@ golang.org/x/sys v0.0.0-20220928140112-f11e5e49a4ec/go.mod h1:oPkhp1MJrh7nUepCBc
 golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.6.0 h1:MVltZSvRTcU2ljQOhs94SXPftV6DCNnZViHeQps87pQ=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.8.0 h1:EBmGv8NaZBZTWvrbjNoL6HVt+IVy3QDQpJs7VRIw3tU=
+golang.org/x/sys v0.8.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/time v0.0.0-20190308202827-9d24e82272b4/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=

internal/pkg/devcontainers/dockerutils.go

@@ -24,10 +24,10 @@ import (
 
 // DevcontainerInfo holds details about a devcontainer
 type DevcontainerInfo struct {
-	ContainerID      string
-	ContainerName    string
-	DevcontainerName string
-	LocalFolderPath  string
+	ContainerID      string `json:"containerID"`
+	ContainerName    string `json:"containerName"`
+	DevcontainerName string `json:"devcontainerName"`
+	LocalFolderPath  string `json:"localFolderPath"`
 }
 
 const (