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

api/http/handler/edgestacks/endpoints.go

@@ -0,0 +1,60 @@
+package edgestacks
+
+import (
+	"fmt"
+
+	portainer "github.com/portainer/portainer/api"
+	"github.com/portainer/portainer/api/internal/endpointutils"
+)
+
+func hasKubeEndpoint(endpointService portainer.EndpointService, endpointIDs []portainer.EndpointID) (bool, error) {
+	return hasEndpointPredicate(endpointService, endpointIDs, endpointutils.IsKubernetesEndpoint)
+}
+
+func hasDockerEndpoint(endpointService portainer.EndpointService, endpointIDs []portainer.EndpointID) (bool, error) {
+	return hasEndpointPredicate(endpointService, endpointIDs, endpointutils.IsDockerEndpoint)
+}
+
+func hasEndpointPredicate(endpointService portainer.EndpointService, endpointIDs []portainer.EndpointID, predicate func(*portainer.Endpoint) bool) (bool, error) {
+	for _, endpointID := range endpointIDs {
+		endpoint, err := endpointService.Endpoint(endpointID)
+		if err != nil {
+			return false, fmt.Errorf("failed to retrieve endpoint from database: %w", err)
+		}
+
+		if predicate(endpoint) {
+			return true, nil
+		}
+	}
+
+	return false, nil
+}
+
+type endpointRelationsConfig struct {
+	endpoints      []portainer.Endpoint
+	endpointGroups []portainer.EndpointGroup
+	edgeGroups     []portainer.EdgeGroup
+}
+
+func fetchEndpointRelationsConfig(dataStore portainer.DataStore) (*endpointRelationsConfig, error) {
+	endpoints, err := dataStore.Endpoint().Endpoints()
+	if err != nil {
+		return nil, fmt.Errorf("unable to retrieve environments from database: %w", err)
+	}
+
+	endpointGroups, err := dataStore.EndpointGroup().EndpointGroups()
+	if err != nil {
+		return nil, fmt.Errorf("unable to retrieve environment groups from database: %w", err)
+	}
+
+	edgeGroups, err := dataStore.EdgeGroup().EdgeGroups()
+	if err != nil {
+		return nil, fmt.Errorf("unable to retrieve edge groups from database: %w", err)
+	}
+
+	return &endpointRelationsConfig{
+		endpoints:      endpoints,
+		endpointGroups: endpointGroups,
+		edgeGroups:     edgeGroups,
+	}, nil
+}