@@ -0,0 +1,36 @@
+from typing import TYPE_CHECKING
+
+if TYPE_CHECKING:
+    from typing import Any, Callable, Optional, Sequence, Tuple
+
+    from sentry_sdk._types import Attributes
+
+    _Converter = Callable[[Any], Optional[Any]]
+    # e.g. ("Limit", "aws.dynamodb.limit", _as_integer) converts
+    # {"Limit": 10} into {"aws.dynamodb.limit": 10} using `_extract_attributes()`
+    _AttributeSpec = Tuple[str, str, _Converter]
+
+
+def _as_integer(value: "Any") -> "Optional[int]":
+    if isinstance(value, int) and not isinstance(value, bool):
+        return value
+    return None
+
+
+def _as_string(value: "Any") -> "Optional[str]":
+    return value if isinstance(value, str) and value else None
+
+
+def _extract_attributes(
+    source: "Any", specs: "Sequence[_AttributeSpec]"
+) -> "Attributes":
+    if not isinstance(source, dict):
+        return {}
+
+    attributes = {}
+    for param, attribute, convert in specs:
+        value = convert(source.get(param))
+        # an unexpected type results in that attribute being omitted.
+        if value is not None:
+            attributes[attribute] = value
+    return attributes