feat: implement app restart

Closes coop-cloud/organising#239.

cli/app/app.go

@@ -18,6 +18,7 @@ to scaling apps up and spinning them down.
 	Subcommands: []*cli.Command{
 		appNewCommand,
 		appConfigCommand,
+		appRestartCommand,
 		appDeployCommand,
 		appUpgradeCommand,
 		appUndeployCommand,

cli/app/restart.go

@@ -0,0 +1,72 @@
+package app
+
+import (
+	"errors"
+	"fmt"
+	"time"
+
+	"coopcloud.tech/abra/cli/internal"
+	"coopcloud.tech/abra/pkg/client"
+	"coopcloud.tech/abra/pkg/config"
+	"github.com/docker/docker/api/types"
+	"github.com/docker/docker/api/types/filters"
+	"github.com/sirupsen/logrus"
+	"github.com/urfave/cli/v2"
+)
+
+var appRestartCommand = &cli.Command{
+	Name:        "restart",
+	Usage:       "Restart an app",
+	Aliases:     []string{"R"},
+	ArgsUsage:   "<service>",
+	Description: `This command restarts a service within a deployed app.`,
+	Action: func(c *cli.Context) error {
+		app := internal.ValidateApp(c)
+
+		serviceName := c.Args().Get(1)
+		if serviceName == "" {
+			err := errors.New("missing service?")
+			internal.ShowSubcommandHelpAndError(c, err)
+		}
+
+		cl, err := client.New(app.Server)
+		if err != nil {
+			logrus.Fatal(err)
+		}
+
+		serviceFilter := fmt.Sprintf("%s_%s", app.StackName(), serviceName)
+		filters := filters.NewArgs()
+		filters.Add("name", serviceFilter)
+		containerOpts := types.ContainerListOptions{Filters: filters}
+		containers, err := cl.ContainerList(c.Context, containerOpts)
+		if err != nil {
+			logrus.Fatal(err)
+		}
+		if len(containers) != 1 {
+			logrus.Fatalf("expected 1 service but got %v", len(containers))
+		}
+
+		logrus.Debugf("attempting to restart %s", serviceFilter)
+
+		timeout := 30 * time.Second
+		if err := cl.ContainerRestart(c.Context, containers[0].ID, &timeout); err != nil {
+			logrus.Fatal(err)
+		}
+
+		logrus.Infof("%s service restarted", serviceFilter)
+
+		return nil
+	},
+	BashComplete: func(c *cli.Context) {
+		appNames, err := config.GetAppNames()
+		if err != nil {
+			logrus.Warn(err)
+		}
+		if c.NArg() > 0 {
+			return
+		}
+		for _, a := range appNames {
+			fmt.Println(a)
+		}
+	},
+}