feat: Add allOf support for model definitions BNCH-18722 (#12)

Collapses the child elements into one, without class heirarchy, mixins, etc

This is a replaying of 2670d11 (first implementation) and 9f5b95a (a bugfix) onto the new `main-v.0.7.0`, modified for the refactored upstream.

This should bring `main-v.0.7.1` up to par with `main` for the features we implemented in our fork (dropping our `Unset` implementation for theirs)

Author: packyg

openapi_python_client/parser/properties/__init__.py

@@ -236,14 +236,27 @@ def build_model_property(
     required_properties: List[Property] = []
     optional_properties: List[Property] = []
     relative_imports: Set[str] = set()
+    references: List[oai.Reference] = []
 
     class_name = data.title or name
     if parent_name:
         class_name = f"{utils.pascal_case(parent_name)}{utils.pascal_case(class_name)}"
     ref = Reference.from_ref(class_name)
 
-    for key, value in (data.properties or {}).items():
+    all_props = data.properties or {}
+    if not isinstance(data, oai.Reference) and data.allOf:
+        for sub_prop in data.allOf:
+            if isinstance(sub_prop, oai.Reference):
+                references += [sub_prop]
+            else:
+                all_props.update(sub_prop.properties or {})
+                required_set.update(sub_prop.required or [])
+
+    for key, value in all_props.items():
         prop_required = key in required_set
+        if not isinstance(value, oai.Reference) and value.allOf:
+            # resolved later
+            continue
         prop, schemas = property_from_data(
             name=key, required=prop_required, data=value, schemas=schemas, parent_name=class_name
         )
@@ -278,6 +291,7 @@ def build_model_property(
 
     prop = ModelProperty(
         reference=ref,
+        references=references,
         required_properties=required_properties,
         optional_properties=optional_properties,
         relative_imports=relative_imports,
@@ -530,6 +544,16 @@ def build_schemas(*, components: Dict[str, Union[oai.Reference, oai.Schema]]) ->
                 schemas = schemas_or_err
                 processing = True  # We made some progress this round, do another after it's done
         to_process = next_round
-    schemas.errors.extend(errors)
 
+    resolve_errors: List[PropertyError] = []
+    models = list(schemas.models.values())
+    for model in models:
+        schemas_or_err = model.resolve_references(components=components, schemas=schemas)
+        if isinstance(schemas_or_err, PropertyError):
+            resolve_errors.append(schemas_or_err)
+        else:
+            schemas = schemas_or_err
+
+    schemas.errors.extend(errors)
+    schemas.errors.extend(resolve_errors)
     return schemas

openapi_python_client/parser/properties/model_property.py

@@ -1,17 +1,25 @@
-from typing import ClassVar, List, Set, Union
+from __future__ import annotations
+
+from collections.abc import Iterable
+from typing import TYPE_CHECKING, ClassVar, Dict, List, Set, Union
 
 import attr
 
+from ... import schema as oai
+from ..errors import PropertyError
 from ..reference import Reference
 from .property import Property
 
+if TYPE_CHECKING:
+    from .schemas import Schemas
+
 
 @attr.s(auto_attribs=True, frozen=True)
 class ModelProperty(Property):
     """ A property which refers to another Schema """
 
     reference: Reference
-
+    references: List[oai.Reference]
     required_properties: List[Property]
     optional_properties: List[Property]
     description: str
@@ -20,6 +28,49 @@ class ModelProperty(Property):
 
     template: ClassVar[str] = "model_property.pyi"
 
+    def resolve_references(
+        self, components: Dict[str, Union[oai.Reference, oai.Schema]], schemas: Schemas
+    ) -> Union[Schemas, PropertyError]:
+        from ..properties import property_from_data
+
+        required_set = set()
+        props = {}
+        while self.references:
+            reference = self.references.pop()
+            source_name = Reference.from_ref(reference.ref).class_name
+            referenced_prop = components[source_name]
+            assert isinstance(referenced_prop, oai.Schema)
+            for p, val in (referenced_prop.properties or {}).items():
+                props[p] = (val, source_name)
+            for sub_prop in referenced_prop.allOf or []:
+                if isinstance(sub_prop, oai.Reference):
+                    self.references.append(sub_prop)
+                else:
+                    for p, val in (sub_prop.properties or {}).items():
+                        props[p] = (val, source_name)
+            if isinstance(referenced_prop.required, Iterable):
+                for sub_prop_name in referenced_prop.required:
+                    required_set.add(sub_prop_name)
+
+        for key, (value, source_name) in (props or {}).items():
+            required = key in required_set
+            prop, schemas = property_from_data(
+                name=key, required=required, data=value, schemas=schemas, parent_name=source_name
+            )
+            if isinstance(prop, PropertyError):
+                return prop
+            if required:
+                self.required_properties.append(prop)
+                # Remove the optional version
+                new_optional_props = [op for op in self.optional_properties if op.name != prop.name]
+                self.optional_properties.clear()
+                self.optional_properties.extend(new_optional_props)
+            elif not any(ep for ep in (self.optional_properties + self.required_properties) if ep.name == prop.name):
+                self.optional_properties.append(prop)
+            self.relative_imports.update(prop.get_imports(prefix=".."))
+
+        return schemas
+
     def get_type_string(self, no_optional: bool = False) -> str:
         """ Get a string representation of type that should be used when declaring this property """
         type_string = self.reference.class_name

tests/test_parser/test_properties/test_init.py

@@ -584,6 +584,7 @@ def test_property_from_data_ref_model(self):
             nullable=False,
             default=None,
             reference=Reference(class_name=class_name, module_name="my_model"),
+            references=[],
             required_properties=[],
             optional_properties=[],
             description="",
@@ -600,6 +601,7 @@ def test_property_from_data_ref_model(self):
             nullable=False,
             default=None,
             reference=Reference(class_name=class_name, module_name="my_model"),
+            references=[],
             required_properties=[],
             optional_properties=[],
             description="",
@@ -986,19 +988,25 @@ def test__string_based_property_unsupported_format(self, mocker):
 def test_build_schemas(mocker):
     build_model_property = mocker.patch(f"{MODULE_NAME}.build_model_property")
     in_data = {"1": mocker.MagicMock(enum=None), "2": mocker.MagicMock(enum=None), "3": mocker.MagicMock(enum=None)}
+
     model_1 = mocker.MagicMock()
     schemas_1 = mocker.MagicMock()
     model_2 = mocker.MagicMock()
     schemas_2 = mocker.MagicMock(errors=[])
-    error = PropertyError()
+    schemas_2.models = {"1": model_1, "2": model_2}
+    error_1 = PropertyError()
     schemas_3 = mocker.MagicMock()
+    schemas_4 = mocker.MagicMock(errors=[])
+    model_1.resolve_references.return_value = schemas_4
+    error_2 = PropertyError()
+    model_2.resolve_references.return_value = error_2
 
     # This loops through one for each, then again to retry the error
     build_model_property.side_effect = [
         (model_1, schemas_1),
         (model_2, schemas_2),
-        (error, schemas_3),
-        (error, schemas_3),
+        (error_1, schemas_3),
+        (error_1, schemas_3),
     ]
 
     from openapi_python_client.parser.properties import Schemas, build_schemas
@@ -1014,8 +1022,12 @@ def test_build_schemas(mocker):
         ]
     )
     # schemas_3 was the last to come back from build_model_property, but it should be ignored because it's an error
-    assert result == schemas_2
-    assert result.errors == [error]
+    model_1.resolve_references.assert_called_once_with(components=in_data, schemas=schemas_2)
+    # schemas_4 came from resolving model_1
+    model_2.resolve_references.assert_called_once_with(components=in_data, schemas=schemas_4)
+    # resolving model_2 resulted in err, so no schemas_5
+    assert result == schemas_4
+    assert result.errors == [error_1, error_2]
 
 
 def test_build_parse_error_on_reference():
@@ -1089,6 +1101,7 @@ def test_build_model_property(additional_properties_schema, expected_additional_
         nullable=False,
         default=None,
         reference=Reference(class_name="ParentMyModel", module_name="parent_my_model"),
+        references=[],
         required_properties=[StringProperty(name="req", required=True, nullable=False, default=None)],
         optional_properties=[DateTimeProperty(name="opt", required=False, nullable=False, default=None)],
         description=data.description,

tests/test_parser/test_properties/test_model_property.py

@@ -23,6 +23,7 @@ def test_get_type_string(no_optional, nullable, required, expected):
         nullable=nullable,
         default=None,
         reference=Reference(class_name="MyClass", module_name="my_module"),
+        references=[],
         description="",
         optional_properties=[],
         required_properties=[],
@@ -42,6 +43,7 @@ def test_get_imports():
         nullable=True,
         default=None,
         reference=Reference(class_name="MyClass", module_name="my_module"),
+        references=[],
         description="",
         optional_properties=[],
         required_properties=[],
@@ -57,3 +59,67 @@ def test_get_imports():
         "from typing import Dict",
         "from typing import cast",
     }
+
+
+def test_resolve_references(mocker):
+    import openapi_python_client.schema as oai
+    from openapi_python_client.parser.properties import build_model_property
+
+    schemas = {
+        "RefA": oai.Schema.construct(
+            title=mocker.MagicMock(),
+            description=mocker.MagicMock(),
+            required=["String"],
+            properties={
+                "String": oai.Schema.construct(type="string"),
+                "Enum": oai.Schema.construct(type="string", enum=["aValue"]),
+                "DateTime": oai.Schema.construct(type="string", format="date-time"),
+            },
+        ),
+        "RefB": oai.Schema.construct(
+            title=mocker.MagicMock(),
+            description=mocker.MagicMock(),
+            required=["DateTime"],
+            properties={
+                "Int": oai.Schema.construct(type="integer"),
+                "DateTime": oai.Schema.construct(type="string", format="date-time"),
+                "Float": oai.Schema.construct(type="number", format="float"),
+            },
+        ),
+        # Intentionally no properties defined
+        "RefC": oai.Schema.construct(
+            title=mocker.MagicMock(),
+            description=mocker.MagicMock(),
+        ),
+    }
+
+    model_schema = oai.Schema.construct(
+        allOf=[
+            oai.Reference.construct(ref="#/components/schemas/RefA"),
+            oai.Reference.construct(ref="#/components/schemas/RefB"),
+            oai.Reference.construct(ref="#/components/schemas/RefC"),
+            oai.Schema.construct(
+                title=mocker.MagicMock(),
+                description=mocker.MagicMock(),
+                required=["Float"],
+                properties={
+                    "String": oai.Schema.construct(type="string"),
+                    "Float": oai.Schema.construct(type="number", format="float"),
+                },
+            ),
+        ]
+    )
+
+    components = {**schemas, "Model": model_schema}
+
+    from openapi_python_client.parser.properties import Schemas
+
+    schemas_holder = Schemas()
+    model, schemas_holder = build_model_property(
+        data=model_schema, name="Model", required=True, schemas=schemas_holder, parent_name=None
+    )
+    model.resolve_references(components, schemas_holder)
+    assert sorted(p.name for p in model.required_properties) == ["DateTime", "Float", "String"]
+    assert all(p.required for p in model.required_properties)
+    assert sorted(p.name for p in model.optional_properties) == ["Enum", "Int"]
+    assert all(not p.required for p in model.optional_properties)