Organize backend into product executable and shared Go modules

backend/product/architecture/boundary_test.go

@@ -0,0 +1,45 @@
+package architecture
+
+import (
+	"go/parser"
+	"go/token"
+	"io/fs"
+	"path/filepath"
+	"strconv"
+	"strings"
+	"testing"
+)
+
+// Provider access is HTTP only. Local Mongo repositories belong to SXCHNGE.
+func TestNoSendicoRuntimeOrPrivateTransportImports(t *testing.T) {
+	err := filepath.WalkDir("../..", func(path string, d fs.DirEntry, err error) error {
+		if err != nil {
+			return err
+		}
+		if d.IsDir() || filepath.Ext(path) != ".go" {
+			return nil
+		}
+		f, err := parser.ParseFile(token.NewFileSet(), path, nil, parser.ImportsOnly)
+		if err != nil {
+			return err
+		}
+		for _, im := range f.Imports {
+			name, err := strconv.Unquote(im.Path.Value)
+			if err != nil {
+				return err
+			}
+			if strings.HasPrefix(filepath.ToSlash(path), "../../shared/") && strings.HasPrefix(name, "git.sendico.io/tech/sxchnge/") && !strings.HasPrefix(name, "git.sendico.io/tech/sxchnge/shared/") {
+				t.Errorf("shared library imports an executable module: %s in %s", name, path)
+			}
+			for _, blocked := range []string{"github.com/tech/sendico/", "google.golang.org/grpc", "github.com/nats-io/", "/pkg/discovery", "/pkg/proto/", "github.com/casbin/", "/pkg/auth", "/storage/organization", "/mongo/policiesdb", "/mongo/rolesdb", "/mongo/invitationdb"} {
+				if strings.Contains(name, blocked) {
+					t.Errorf("%s imports private provider transport or shared runtime: %s", path, name)
+				}
+			}
+		}
+		return nil
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+}