feat: change SPDX to the new internal opossum_model

* minor changes to attribution_generation.py and helper_methods.py
* convert_to_opossum.py now uses opossum_model.Resource which simplifies the logic
* this caused some tests to change:
 - (minor) some tests require a conversion to opossum file format
 - resources_to_attribution used to have trailing "/" for folders which are no longer
   generated. This should have no impact on the validity of the .opossum file

src/opossum_lib/spdx/attribution_generation.py

@@ -12,7 +12,7 @@
 from spdx_tools.spdx.writer.tagvalue.package_writer import write_package
 from spdx_tools.spdx.writer.tagvalue.snippet_writer import write_snippet
 
-from opossum_lib.opossum.opossum_file import OpossumPackage, SourceInfo
+from opossum_lib.opossum_model import OpossumPackage, SourceInfo
 from opossum_lib.spdx.constants import (
     PURL,
     SPDX_FILE_IDENTIFIER,
@@ -34,13 +34,13 @@ def create_package_attribution(package: Package) -> OpossumPackage:
     source = SourceInfo(name=SPDX_PACKAGE_IDENTIFIER)
     package_attribution = OpossumPackage(
         source=source,
-        packageName=package.name,
+        package_name=package.name,
         url=str(package.download_location),
-        packageVersion=package.version,
-        packagePURLAppendix=_get_purl(package),
+        package_version=package.version,
+        package_p_u_r_l_appendix=_get_purl(package),
         copyright=str(package.copyright_text),
         comment=package_data.getvalue(),
-        licenseName=str(package.license_concluded),
+        license_name=str(package.license_concluded),
     )
 
     return package_attribution
@@ -52,10 +52,10 @@ def create_file_attribution(file: File) -> OpossumPackage:
     source = SourceInfo(name=SPDX_FILE_IDENTIFIER)
     file_attribution = OpossumPackage(
         source=source,
-        packageName=file.name.split("/")[-1],
+        package_name=file.name.split("/")[-1],
         copyright=str(file.copyright_text),
         comment=file_data.getvalue(),
-        licenseName=str(file.license_concluded),
+        license_name=str(file.license_concluded),
     )
     return file_attribution
 
@@ -66,10 +66,10 @@ def create_snippet_attribution(snippet: Snippet) -> OpossumPackage:
     source = SourceInfo(name=SPDX_SNIPPET_IDENTIFIER)
     snippet_attribution = OpossumPackage(
         source=source,
-        packageName=snippet.name,
+        package_name=snippet.name,
         copyright=str(snippet.copyright_text),
         comment=snippet_data.getvalue(),
-        licenseName=str(snippet.license_concluded),
+        license_name=str(snippet.license_concluded),
     )
 
     return snippet_attribution
@@ -83,8 +83,8 @@ def create_document_attribution(
     source = SourceInfo(name=creation_info.spdx_id)
     document_attribution = OpossumPackage(
         source=source,
-        packageName=creation_info.name,
-        licenseName=creation_info.data_license,
+        package_name=creation_info.name,
+        license_name=creation_info.data_license,
         comment=creation_info_data.getvalue(),
     )
 

src/opossum_lib/spdx/convert_to_opossum.py

@@ -5,8 +5,9 @@
 import logging
 import sys
 import uuid
+from typing import Any
 
-from networkx import DiGraph, shortest_path
+from networkx import DiGraph
 from spdx_tools.spdx.model.document import CreationInfo
 from spdx_tools.spdx.model.document import Document as SpdxDocument
 from spdx_tools.spdx.model.file import File
@@ -16,17 +17,15 @@
 from spdx_tools.spdx.parser.parse_anything import parse_file
 from spdx_tools.spdx.validation.document_validator import validate_full_spdx_document
 
-from opossum_lib.opossum.opossum_file import (
+from opossum_lib.opossum.opossum_file_content import OpossumFileContent
+from opossum_lib.opossum_model import (
     ExternalAttributionSource,
     Metadata,
-    OpossumInformation,
+    Opossum,
     OpossumPackage,
-    OpossumPackageIdentifier,
     Resource,
-    ResourceType,
     SourceInfo,
 )
-from opossum_lib.opossum.opossum_file_content import OpossumFileContent
 from opossum_lib.spdx.attribution_generation import (
     create_document_attribution,
     create_file_attribution,
@@ -40,10 +39,10 @@
 )
 from opossum_lib.spdx.graph_generation import generate_graph_from_spdx
 from opossum_lib.spdx.helper_methods import (
-    _create_file_path_from_graph_path,
+    _get_file_path,
+    _get_resource_type,
     _get_source_for_graph_traversal,
     _node_represents_a_spdx_element,
-    _replace_node_ids_with_labels_and_add_resource_type,
     _weakly_connected_component_sub_graphs,
 )
 from opossum_lib.spdx.tree_generation import generate_tree_from_graph
@@ -69,15 +68,15 @@ def convert_spdx_to_opossum_information(filename: str) -> OpossumFileContent:
         )
     graph = generate_graph_from_spdx(document)
     tree = generate_tree_from_graph(graph)
-    opossum_information = convert_tree_to_opossum_information(tree)
-    return OpossumFileContent(opossum_information)
+    return convert_tree_to_opossum(tree).to_opossum_file_format()
 
 
-def convert_tree_to_opossum_information(tree: DiGraph) -> OpossumInformation:
+def convert_tree_to_opossum(tree: DiGraph) -> Opossum:
     metadata = create_metadata(tree)
-    resources = Resource(type=ResourceType.TOP_LEVEL)
-    resources_to_attributions: dict[str, list[str]] = dict()
-    external_attributions: dict[str, OpossumPackage] = dict()
+    resources = []  # Resource(type=ResourceType.TOP_LEVEL)
+    # resources_to_attributions: dict[str, list[str]] = dict()
+    # external_attributions: dict[str, OpossumPackage] = dict()
+    attribution_to_id: dict[OpossumPackage, str] = {}
     attribution_breakpoints = []
     external_attribution_sources = {
         SPDX_FILE_IDENTIFIER: ExternalAttributionSource(
@@ -97,78 +96,53 @@ def convert_tree_to_opossum_information(tree: DiGraph) -> OpossumInformation:
             raise RuntimeError(
                 "A tree should always have a node without incoming edge."
             )
-        for node in connected_subgraph.nodes():
-            path: list[str] = shortest_path(connected_subgraph, source, node)
-            path_with_labels: list[tuple[str, ResourceType]] = (
-                _replace_node_ids_with_labels_and_add_resource_type(
-                    path, connected_subgraph
-                )
-            )
-            resources = resources.add_path(path_with_labels)
-            file_path: str = _create_file_path_from_graph_path(path, connected_subgraph)
-            if _node_represents_a_spdx_element(connected_subgraph, node):
-                create_attribution_and_link_with_resource(
-                    external_attributions,
-                    resources_to_attributions,
-                    file_path,
-                    node,
-                    connected_subgraph,
+        source_file_path = _get_file_path(connected_subgraph, source, source)
+        rootnode = Resource(path=source_file_path)
+        resources.append(rootnode)
+        for node_label in connected_subgraph.nodes():
+            node = connected_subgraph.nodes[node_label]
+            file_path: str = _get_file_path(connected_subgraph, source, node_label)
+            new_resource = Resource(path=file_path, type=_get_resource_type(node))
+            if _node_represents_a_spdx_element(connected_subgraph, node_label):
+                attribution = create_attribution(node)
+                attribution_to_id[attribution] = (
+                    get_attribution_id(node["element"]) or node_label
                 )
-
+                new_resource.attributions.append(attribution)
             else:
-                attribution_breakpoints.append(file_path)
+                attribution_breakpoints.append("/" + file_path)
+            rootnode.add_resource(new_resource)
 
-    opossum_information = OpossumInformation(
+    opossum_information = Opossum(
         metadata=metadata,
-        resources=resources.convert_to_file_resource(),
-        external_attributions=external_attributions,
-        resources_to_attributions=resources_to_attributions,
-        attributionBreakpoints=attribution_breakpoints,
-        externalAttributionSources=external_attribution_sources,
+        resources=resources,
+        attribution_to_id=attribution_to_id,
+        attribution_breakpoints=attribution_breakpoints,
+        external_attribution_sources=external_attribution_sources,
     )
     return opossum_information
 
 
-def create_attribution_and_link_with_resource(
-    external_attributions: dict[OpossumPackageIdentifier, OpossumPackage],
-    resources_to_attributions: dict[OpossumPackageIdentifier, list[str]],
-    file_path: str,
-    node: str,
-    tree: DiGraph,
-) -> None:
-    node_element = tree.nodes[node]["element"]
+def create_attribution(
+    node: dict[str, Any],
+) -> OpossumPackage:
+    node_element = node["element"]
     if isinstance(node_element, Package):
-        external_attributions[node_element.spdx_id] = create_package_attribution(
-            package=node_element
-        )
-        resources_to_attributions[file_path] = [
-            node_element.spdx_id,
-        ]
+        return create_package_attribution(package=node_element)
     elif isinstance(node_element, File):
-        external_attributions[node_element.spdx_id] = create_file_attribution(
-            node_element
-        )
-        resources_to_attributions[file_path] = [
-            node_element.spdx_id,
-        ]
+        return create_file_attribution(node_element)
     elif isinstance(node_element, Snippet):
-        external_attributions[node_element.spdx_id] = create_snippet_attribution(
-            node_element
-        )
-        resources_to_attributions[file_path] = [
-            node_element.spdx_id,
-        ]
+        return create_snippet_attribution(node_element)
     elif isinstance(node_element, CreationInfo):
-        external_attributions[node_element.spdx_id] = create_document_attribution(
-            node_element
-        )
-        resources_to_attributions[file_path] = [node_element.spdx_id]
-
+        return create_document_attribution(node_element)
     else:
-        external_attributions[node] = OpossumPackage(
-            source=SourceInfo(name=tree.nodes[node]["label"])
-        )
-        resources_to_attributions[file_path] = [node]
+        return OpossumPackage(source=SourceInfo(name=node["label"]))
+
+
+def get_attribution_id(element: Any) -> str | None:
+    if isinstance(element, Package | File | Snippet | CreationInfo):
+        return element.spdx_id
+    return None
 
 
 def create_metadata(tree: DiGraph) -> Metadata:

src/opossum_lib/spdx/helper_methods.py

@@ -3,11 +3,11 @@
 # SPDX-License-Identifier: Apache-2.0
 from typing import Any
 
-from networkx import DiGraph, weakly_connected_components
+from networkx import DiGraph, shortest_path, weakly_connected_components
 from spdx_tools.spdx.constants import DOCUMENT_SPDX_ID
 from spdx_tools.spdx.model import File, Package, Snippet
 
-from opossum_lib.opossum.opossum_file import ResourceType
+from opossum_lib.opossum_model import ResourceType
 
 
 def _get_source_for_graph_traversal(connected_subgraph: DiGraph) -> str | None:
@@ -41,38 +41,18 @@ def _weakly_connected_component_sub_graphs(graph: DiGraph) -> list[DiGraph]:
     return connected_sub_graphs
 
 
+def _get_file_path(graph: DiGraph, source: str, to: str) -> str:
+    path = shortest_path(graph, source, to)
+    return _create_file_path_from_graph_path(path, graph)
+
+
 def _create_file_path_from_graph_path(path: list[str], graph: DiGraph) -> str:
-    base_path = "/" + "/".join(
-        [_replace_prefix(graph.nodes[node]["label"]) for node in path]
-    )
+    base_path = "/".join([_replace_prefix(graph.nodes[node]["label"]) for node in path])
     if list(graph.successors(path[-1])):
         base_path += "/"
     return base_path
 
 
-def _replace_node_ids_with_labels_and_add_resource_type(
-    path: list[str], graph: DiGraph
-) -> list[tuple[str, ResourceType]]:
-    resulting_path = []
-    path_with_label_and_resource_type = [
-        (
-            _replace_prefix(graph.nodes[node]["label"]),
-            _get_resource_type(graph.nodes[node]),
-        )
-        for node in path
-    ]
-    for element_or_path, resource_type in path_with_label_and_resource_type:
-        resulting_path.extend(
-            [
-                (element, resource_type)
-                for element in element_or_path.split("/")
-                if element
-            ]
-        )
-
-    return resulting_path
-
-
 def _replace_prefix(label: str) -> str:
     """
     Some spdx element names start with "./" or "/", to avoid paths like "/./" or
@@ -85,11 +65,11 @@ def _replace_prefix(label: str) -> str:
     return label
 
 
-def _get_resource_type(node_attributes: dict[str, Any]) -> ResourceType:
+def _get_resource_type(node_attributes: dict[str, Any]) -> ResourceType | None:
     element = node_attributes.get("element")
     if isinstance(element, Package):
         return ResourceType.FOLDER
     elif isinstance(element, Snippet | File):
         return ResourceType.FILE
     else:
-        return ResourceType.OTHER
+        return None

tests/data/expected_opossum.json

@@ -109,10 +109,10 @@
     }
   },
   "resourcesToAttributions":{
-    "/SPDX Lite Document/":[
+    "/SPDX Lite Document":[
       "SPDXRef-DOCUMENT"
     ],
-    "/SPDX Lite Document/DESCRIBES/Package A/":[
+    "/SPDX Lite Document/DESCRIBES/Package A":[
       "SPDXRef-Package-A"
     ],
     "/SPDX Lite Document/DESCRIBES/Package B":[
@@ -124,7 +124,7 @@
     "/SPDX Lite Document/DESCRIBES/Package A/CONTAINS/File-C":[
       "SPDXRef-File-C"
     ],
-    "/SPDX Lite Document/DESCRIBES/Package A/COPY_OF/Package C/":[
+    "/SPDX Lite Document/DESCRIBES/Package A/COPY_OF/Package C":[
       "SPDXRef-Package-C"
     ],
     "/SPDX Lite Document/DESCRIBES/Package A/COPY_OF/Package C/CONTAINS/File-B":[

tests/test_spdx/test_attribution_creation.py

@@ -54,7 +54,7 @@ def test_create_package_attribution() -> None:
     write_package(package, package_data)
     package_attribution = create_package_attribution(package)
 
-    assert package_attribution == OpossumPackage(
+    assert package_attribution.to_opossum_file_format() == OpossumPackage(
         source=SourceInfo(name=SPDX_PACKAGE_IDENTIFIER),
         comment=package_data.getvalue(),
         packageName=package.name,
@@ -79,7 +79,7 @@ def test_create_file_attribution() -> None:
     write_file(file, file_data)
     file_attribution = create_file_attribution(file)
 
-    assert file_attribution == OpossumPackage(
+    assert file_attribution.to_opossum_file_format() == OpossumPackage(
         source=SourceInfo(name=SPDX_FILE_IDENTIFIER),
         comment=file_data.getvalue(),
         packageName=file.name,
@@ -102,7 +102,7 @@ def test_create_snippet_attribution() -> None:
     write_snippet(snippet, snippet_data)
     snippet_attribution = create_snippet_attribution(snippet)
 
-    assert snippet_attribution == OpossumPackage(
+    assert snippet_attribution.to_opossum_file_format() == OpossumPackage(
         source=SourceInfo(name=SPDX_SNIPPET_IDENTIFIER),
         comment=snippet_data.getvalue(),
         packageName=snippet.name,
@@ -124,7 +124,7 @@ def test_create_document_attribution() -> None:
     write_creation_info(creation_info, creation_info_data)
     document_attribution = create_document_attribution(creation_info)
 
-    assert document_attribution == OpossumPackage(
+    assert document_attribution.to_opossum_file_format() == OpossumPackage(
         source=SourceInfo(name=DOCUMENT_SPDX_ID),
         packageName=creation_info.name,
         licenseName=creation_info.data_license,