feat(edgestacks): support kubernetes edge stacks (#5276) [EE-393]

api/http/handler/edgestacks/handler.go

@@ -1,21 +1,26 @@
 package edgestacks
 
 import (
+	"fmt"
 	"net/http"
+	"path"
+	"strconv"
 
 	"github.com/gorilla/mux"
 	httperror "github.com/portainer/libhttp/error"
-	"github.com/portainer/portainer/api"
+	portainer "github.com/portainer/portainer/api"
+	"github.com/portainer/portainer/api/filesystem"
 	"github.com/portainer/portainer/api/http/security"
 )
 
 // Handler is the HTTP handler used to handle endpoint group operations.
 type Handler struct {
 	*mux.Router
-	requestBouncer *security.RequestBouncer
-	DataStore      portainer.DataStore
-	FileService    portainer.FileService
-	GitService     portainer.GitService
+	requestBouncer     *security.RequestBouncer
+	DataStore          portainer.DataStore
+	FileService        portainer.FileService
+	GitService         portainer.GitService
+	KubernetesDeployer portainer.KubernetesDeployer
 }
 
 // NewHandler creates a handler to manage endpoint group operations.
@@ -40,3 +45,34 @@ func NewHandler(bouncer *security.RequestBouncer) *Handler {
 		bouncer.PublicAccess(httperror.LoggerHandler(h.edgeStackStatusUpdate))).Methods(http.MethodPut)
 	return h
 }
+
+func (handler *Handler) convertAndStoreKubeManifestIfNeeded(edgeStack *portainer.EdgeStack, relatedEndpointIds []portainer.EndpointID) error {
+	hasKubeEndpoint, err := hasKubeEndpoint(handler.DataStore.Endpoint(), relatedEndpointIds)
+	if err != nil {
+		return fmt.Errorf("unable to check if edge stack has kube endpoints: %w", err)
+	}
+
+	if !hasKubeEndpoint {
+		return nil
+	}
+
+	composeConfig, err := handler.FileService.GetFileContent(path.Join(edgeStack.ProjectPath, edgeStack.EntryPoint))
+	if err != nil {
+		return fmt.Errorf("unable to retrieve Compose file from disk: %w", err)
+	}
+
+	kompose, err := handler.KubernetesDeployer.ConvertCompose(composeConfig)
+	if err != nil {
+		return fmt.Errorf("failed converting compose file to kubernetes manifest: %w", err)
+	}
+
+	komposeFileName := filesystem.ManifestFileDefaultName
+	_, err = handler.FileService.StoreEdgeStackFileFromBytes(strconv.Itoa(int(edgeStack.ID)), komposeFileName, kompose)
+	if err != nil {
+		return fmt.Errorf("failed to store kube manifest file: %w", err)
+	}
+
+	edgeStack.ManifestPath = komposeFileName
+
+	return nil
+}