abra/cli/recipe/sync.go

package recipe

import (
	"fmt"

	"coopcloud.tech/abra/cli/internal"
	"coopcloud.tech/abra/pkg/client"
	"github.com/docker/distribution/reference"
	"github.com/sirupsen/logrus"
	"github.com/urfave/cli/v2"
)

var recipeSyncCommand = &cli.Command{
	Name:    "sync",
	Usage:   "Generate new recipe labels",
	Aliases: []string{"s"},
	Description: `
This command will generate labels for each service which correspond to the
following format:

    coop-cloud.${STACK_NAME}.${SERVICE_NAME}.version=${IMAGE_TAG}-${IMAGE_DIGEST}

The <recipe> configuration will be updated on the local file system. These
labels are consumed by abra in other command invocations and used to determine
the versioning metadata of up-and-running containers are.
`,
	ArgsUsage: "<recipe>",
	Action: func(c *cli.Context) error {
		recipe := internal.ValidateRecipe(c)

		hasAppService := false
		for _, service := range recipe.Config.Services {
			if service.Name == "app" {
				hasAppService = true
			}
		}

		if !hasAppService {
			logrus.Fatal(fmt.Sprintf("no 'app' service defined in '%s'", recipe.Name))
		}

		for _, service := range recipe.Config.Services {
			img, err := reference.ParseNormalizedNamed(service.Image)
			if err != nil {
				logrus.Fatal(err)
			}
			logrus.Debugf("detected image '%s' for service '%s'", img, service.Name)

			digest, err := client.GetTagDigest(img)
			if err != nil {
				logrus.Fatal(err)
			}
			logrus.Debugf("retrieved digest '%s' for '%s'", digest, img)

			tag := img.(reference.NamedTagged).Tag()
			label := fmt.Sprintf("coop-cloud.${STACK_NAME}.%s.version=%s-%s", service.Name, tag, digest)
			if err := recipe.UpdateLabel(service.Name, label); err != nil {
				logrus.Fatal(err)
			}
			logrus.Debugf("added label '%s' to service '%s'", label, service.Name)
		}

		return nil
	},
}