refactor/fix: deploy/upgrade/rollback

See coop-cloud/abra#461

pkg/recipe/git.go

@@ -13,13 +13,20 @@ import (
 	"github.com/go-git/go-git/v5/plumbing"
 )
 
-// Ensure makes sure the recipe exists, is up to date and has the latest version checked out.
-func (r Recipe) Ensure(chaos bool, offline bool) error {
+type EnsureContext struct {
+	Chaos     bool
+	Offline   bool
+	IgnoreEnv bool
+}
+
+// Ensure makes sure the recipe exists, is up to date and has the specific
+// version checked out.
+func (r Recipe) Ensure(ctx EnsureContext) error {
 	if err := r.EnsureExists(); err != nil {
 		return err
 	}
 
-	if chaos {
+	if ctx.Chaos {
 		return nil
 	}
 
@@ -27,15 +34,16 @@ func (r Recipe) Ensure(chaos bool, offline bool) error {
 		return err
 	}
 
-	if !offline {
+	if !ctx.Offline {
 		if err := r.EnsureUpToDate(); err != nil {
 			log.Fatal(err)
 		}
 	}
 
-	if r.Version != "" {
-		log.Debugf("ensuring version %s", r.Version)
-		if _, err := r.EnsureVersion(r.Version); err != nil {
+	if r.EnvVersion != "" && !ctx.IgnoreEnv {
+		log.Debugf("ensuring env version %s", r.EnvVersion)
+
+		if _, err := r.EnsureVersion(r.EnvVersion); err != nil {
 			return err
 		}
 
@@ -65,6 +73,41 @@ func (r Recipe) EnsureExists() error {
 	return nil
 }
 
+// IsChaosCommit determines if a version sttring is a chaos commit or not.
+func (r Recipe) IsChaosCommit(version string) (bool, error) {
+	isChaosCommit := false
+
+	if err := gitPkg.EnsureGitRepo(r.Dir); err != nil {
+		return isChaosCommit, err
+	}
+
+	repo, err := git.PlainOpen(r.Dir)
+	if err != nil {
+		return isChaosCommit, err
+	}
+
+	tags, err := repo.Tags()
+	if err != nil {
+		return isChaosCommit, err
+	}
+
+	var tagRef plumbing.ReferenceName
+	if err := tags.ForEach(func(ref *plumbing.Reference) (err error) {
+		if ref.Name().Short() == version {
+			tagRef = ref.Name()
+		}
+		return nil
+	}); err != nil {
+		return isChaosCommit, err
+	}
+
+	if tagRef.String() == "" {
+		isChaosCommit = true
+	}
+
+	return true, nil
+}
+
 // EnsureVersion checks whether a specific version exists for a recipe.
 func (r Recipe) EnsureVersion(version string) (bool, error) {
 	isChaosCommit := false