add support for validation cache

Author: David Andersson

open_alchemy/schemas/validation/__init__.py

@@ -2,6 +2,7 @@
 
 import typing
 
+from ... import cache
 from ... import exceptions as _exceptions
 from ... import types as _oa_types
 from ..helpers import iterate
@@ -87,14 +88,21 @@ def _other_schemas_checks(*, schemas: _oa_types.Schemas) -> types.Result:
     return types.Result(valid=True, reason=None)
 
 
-def process(*, schemas: _oa_types.Schemas) -> None:
+def process(
+    *, schemas: _oa_types.Schemas, spec_filename: typing.Optional[str] = None
+) -> None:
     """
     Validate schemas.
 
     Args:
         schemas: The schemas to validate.
+        spec_filename: The filename of the spec, used to cache the result.
 
     """
+    if spec_filename is not None:
+        if cache.schemas_valid(spec_filename):
+            return
+
     schemas_result = schemas_validation.check(schemas=schemas)
     if not schemas_result.valid:
         raise _exceptions.MalformedSchemaError(schemas_result.reason)
@@ -121,6 +129,9 @@ def process(*, schemas: _oa_types.Schemas) -> None:
     if not other_results_result.valid:
         raise _exceptions.MalformedSchemaError(other_results_result.reason)
 
+    if spec_filename is not None:
+        cache.schemas_are_valid(spec_filename)
+
 
 def check_one_model(*, schemas: _oa_types.Schemas) -> types.Result:
     """

tests/open_alchemy/schemas/validation/test_validation.py

@@ -1,5 +1,7 @@
 """Tests for validation rules."""
 
+import pathlib
+
 import pytest
 
 from open_alchemy import exceptions
@@ -259,6 +261,27 @@ def test_process(schemas, raises):
         validation.process(schemas=schemas)
 
 
+def test_process_cache(tmpdir):
+    """
+    GIVEN spec filename
+    WHEN process is called with the schemas and filename twice
+    THEN the schemas are not checked on the second run.
+    """
+    tmpdir_path = pathlib.Path(tmpdir)
+    spec_file = tmpdir_path / "spec.json"
+    spec_file.write_text("spec 1", encoding="utf-8")
+    schemas = {
+        "Schema1": {
+            "type": "object",
+            "x-tablename": "schema_1",
+            "properties": {"prop_1": {"type": "integer"}},
+        }
+    }
+
+    validation.process(schemas=schemas, spec_filename=str(spec_file))
+    validation.process(schemas={}, spec_filename=str(spec_file))
+
+
 CHECK_TESTS = [
     pytest.param(
         True,