Add status command to query the status of a CNAB installation.

For a Docker Application Package, it will run a "docker stack services" on the deployed stack.

Signed-off-by: Silvin Lubecki <silvin.lubecki@docker.com>

Author: silvin-lubecki

cmd/docker-app/root.go

@@ -47,6 +47,7 @@ func addCommands(cmd *cobra.Command, dockerCli command.Cli) {
 		installCmd(dockerCli),
 		upgradeCmd(dockerCli),
 		uninstallCmd(dockerCli),
+		statusCmd(dockerCli),
 		initCmd(),
 		inspectCmd(dockerCli),
 		mergeCmd(dockerCli),

cmd/docker-app/status.go

@@ -0,0 +1,57 @@
+package main
+
+import (
+	"github.com/deislabs/duffle/pkg/action"
+	"github.com/deislabs/duffle/pkg/claim"
+	"github.com/deislabs/duffle/pkg/credentials"
+	"github.com/deislabs/duffle/pkg/utils/crud"
+	"github.com/docker/cli/cli"
+	"github.com/docker/cli/cli/command"
+	"github.com/spf13/cobra"
+)
+
+func statusCmd(dockerCli command.Cli) *cobra.Command {
+	var opts uninstallOptions
+
+	cmd := &cobra.Command{
+		Use:   "status <installation-name>",
+		Short: "Get an application status",
+		Args:  cli.ExactArgs(1),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			return runStatus(dockerCli, args[0], opts)
+		},
+	}
+
+	cmd.Flags().StringVar(&opts.targetContext, "target-context", "", "Context on which to request the application status")
+	cmd.Flags().StringArrayVarP(&opts.credentialsets, "credential-set", "c", []string{}, "Use a duffle credentialset (either a YAML file, or a credential set present in the duffle credential store)")
+
+	return cmd
+}
+
+func runStatus(dockerCli command.Cli, claimName string, opts uninstallOptions) error {
+	muteDockerCli(dockerCli)
+	h := duffleHome()
+
+	claimStore := claim.NewClaimStore(crud.NewFileSystemStore(h.Claims(), "json"))
+	c, err := claimStore.Read(claimName)
+	if err != nil {
+		return err
+	}
+	targetContext := getTargetContext(opts.targetContext)
+
+	driverImpl, err := prepareDriver(dockerCli)
+	if err != nil {
+		return err
+	}
+	creds, err := prepareCredentialSet(targetContext, dockerCli.ContextStore(), c.Bundle, opts.credentialsets)
+	if err != nil {
+		return err
+	}
+	if err := credentials.Validate(creds, c.Bundle.Credentials); err != nil {
+		return err
+	}
+	status := &action.Status{
+		Driver: driverImpl,
+	}
+	return status.Run(&c, creds, dockerCli.Out())
+}