Leverage the parent_path field when available #1691

Signed-off-by: tdruez <tdruez@nexb.com>

Author: tdruez

scanpipe/models.py

@@ -2864,7 +2864,7 @@ def __str__(self):
 
     def save(self, *args, **kwargs):
         if self.path and not self.parent_path:
-            self.parent_path = self.parent_directory() or ""
+            self.parent_path = self.compute_parent_directory() or ""
         super().save(*args, **kwargs)
 
     def get_absolute_url(self):
@@ -2935,17 +2935,21 @@ def get_path_segments_with_subpath(self):
 
         return part_and_subpath
 
-    def parent_directory(self):
+    def compute_parent_directory(self):
         """Return the parent path for this CodebaseResource or None."""
-        parent_path = parent_directory(str(self.path), with_trail=False)
-        return parent_path or None
+        if parent_path := parent_directory(str(self.path), with_trail=False):
+            return parent_path
 
     def has_parent(self):
         """
         Return True if this CodebaseResource has a parent CodebaseResource or
         False otherwise.
         """
-        parent_path = self.parent_directory()
+        if self.parent_path:
+            return True
+
+        # Support for resources created before the parent_path was stored as a field.
+        parent_path = self.compute_parent_directory()
         if not parent_path:
             return False
         if self.project.codebaseresources.filter(path=parent_path).exists():
@@ -2960,7 +2964,13 @@ def parent(self, codebase=None):
         `codebase` is not used in this context but required for compatibility
         with the commoncode.resource.Codebase class API.
         """
-        parent_path = self.parent_directory()
+        if self.parent_path:
+            parent_path = self.parent_path
+
+        # Support for resources created before the parent_path was stored as a field.
+        else:
+            parent_path = self.compute_parent_directory()
+
         return parent_path and self.project.codebaseresources.get(path=parent_path)
 
     def siblings(self, codebase=None):

scanpipe/pipes/__init__.py

@@ -73,7 +73,6 @@ def make_codebase_resource(project, location, save=True, **extra_fields):
 
     relative_path = Path(location).relative_to(project.codebase_path)
     parent_path = str(relative_path.parent)
-
     if parent_path == ".":
         parent_path = ""
 

scanpipe/tests/pipes/test_scancode.py

@@ -502,7 +502,7 @@ def test_scanpipe_pipes_scancode_assemble_package_function(self):
         resource = project.codebaseresources.get(name="package.json")
 
         # This assembly should not trigger that many queries.
-        with self.assertNumQueries(18):
+        with self.assertNumQueries(17):
             scancode.assemble_package(resource, project, processed_paths)
 
         self.assertEqual(1, project.discoveredpackages.count())

scanpipe/tests/test_models.py

@@ -1638,6 +1638,25 @@ def test_scanpipe_codebase_resource_model_compliance_alert_update_fields(self):
         resource.refresh_from_db()
         self.assertEqual("ok", resource.compliance_alert)
 
+    def test_scanpipe_codebase_resource_model_parent_path_set_during_save(self):
+        resource = self.project1.codebaseresources.create(path="")
+        self.assertEqual("", resource.parent_path)
+
+        resource = self.project1.codebaseresources.create(path=".")
+        self.assertEqual("", resource.parent_path)
+
+        resource = self.project1.codebaseresources.create(path="file")
+        self.assertEqual("", resource.parent_path)
+
+        resource = self.project1.codebaseresources.create(path="dir/")
+        self.assertEqual("", resource.parent_path)
+
+        resource = self.project1.codebaseresources.create(path="dir1/dir2/")
+        self.assertEqual("dir1", resource.parent_path)
+
+        resource = self.project1.codebaseresources.create(path="dir1/dir2/file")
+        self.assertEqual("dir1/dir2", resource.parent_path)
+
     @patch.object(scanpipe_app, "policies", new=global_policies)
     def test_scanpipe_can_compute_compliance_alert_for_license_exceptions(self):
         scanpipe_app.license_policies_index = license_policies_index
@@ -1646,16 +1665,6 @@ def test_scanpipe_can_compute_compliance_alert_for_license_exceptions(self):
         resource.update(detected_license_expression=license_expression)
         self.assertEqual("warning", resource.compute_compliance_alert())
 
-    def test_scanpipe_codebase_root_parent_path(self):
-        resource1 = self.project1.codebaseresources.create(path="file")
-
-        self.assertEqual("", resource1.parent_path)
-
-    def test_scanpipe_codebase_regular_parent_path(self):
-        resource2 = self.project1.codebaseresources.create(path="dir1/dir2/file")
-
-        self.assertEqual("dir1/dir2", resource2.parent_path)
-
     def test_scanpipe_scan_fields_model_mixin_methods(self):
         expected = [
             "detected_license_expression",