Make the api response check loose to accept unknown extra keys (#7215)

data model class for api response should not be strict for additional
fields

Author: yangw-dev

aws/lambda/benchmark_regression_summary_report/common/benchmark_time_series_api_model.py

@@ -19,6 +19,18 @@ class BenchmarkTimeSeriesItem:
     group_info: Dict[str, Any]
     num_of_dp: int
     data: List[Dict[str, Any]] = field(default_factory=list)
+    # catch-all for unknown/extra keys
+    extra: Dict[str, Any] = field(default_factory=dict)
+
+    def __init__(self, **kwargs):
+        # separate known vs unknown
+        known_fields = {f.name for f in self.__dataclass_fields__.values() if f.init}
+        init_args = {k: v for k, v in kwargs.items() if k in known_fields}
+        object.__setattr__(
+            self, "extra", {k: v for k, v in kwargs.items() if k not in known_fields}
+        )
+        for k, v in init_args.items():
+            object.__setattr__(self, k, v)
 
 
 @dataclass