Prevent non-ints to make it into the length leaf assoc column

Summary:
See task, but it seems that sometimes tools provide bad length values (other than ints and null).

Filter them out

Differential Revision: D63144565

fbshipit-source-id: 58710be5a86194b3a50e0bd2f9959c55966e5ff4

sapp/pipeline/model_generator.py

@@ -448,6 +448,8 @@ def _generate_raw_trace_frame(
         leaf_records = []
         leaf_mapping_ids: Set[LeafMapping] = set()
         for leaf, depth in leaves:
+            if not isinstance(depth, int) or depth < 0:
+                depth = None  # avoid writing bad stuff to DB
             leaf_record = self._get_shared_text(leaf_kind, leaf)
             caller_leaf_id = self.graph.get_transform_normalized_caller_kind_id(
                 leaf_record