structure saas with tools

.venv/lib/python3.10/site-packages/proto/utils.py

@@ -0,0 +1,58 @@
+# Copyright 2018 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import functools
+
+
+def has_upb():
+    try:
+        from google._upb import _message  # pylint: disable=unused-import
+
+        has_upb = True
+    except ImportError:
+        has_upb = False
+    return has_upb
+
+
+def cached_property(fx):
+    """Make the callable into a cached property.
+
+    Similar to @property, but the function will only be called once per
+    object.
+
+    Args:
+        fx (Callable[]): The property function.
+
+    Returns:
+        Callable[]: The wrapped function.
+    """
+
+    @functools.wraps(fx)
+    def inner(self):
+        # Sanity check: If there is no cache at all, create an empty cache.
+        if not hasattr(self, "_cached_values"):
+            object.__setattr__(self, "_cached_values", {})
+
+        # If and only if the function's result is not in the cache,
+        # run the function.
+        if fx.__name__ not in self._cached_values:
+            self._cached_values[fx.__name__] = fx(self)
+
+        # Return the value from cache.
+        return self._cached_values[fx.__name__]
+
+    return property(inner)
+
+
+__all__ = ("cached_property",)