Changed code to support older Python versions

venv/lib/python3.11/site-packages/sentry_sdk/feature_flags.py

@@ -0,0 +1,71 @@
+import copy
+import sentry_sdk
+from sentry_sdk._lru_cache import LRUCache
+from threading import Lock
+
+from typing import TYPE_CHECKING, Any
+
+if TYPE_CHECKING:
+    from typing import TypedDict
+
+    FlagData = TypedDict("FlagData", {"flag": str, "result": bool})
+
+
+DEFAULT_FLAG_CAPACITY = 100
+
+
+class FlagBuffer:
+    def __init__(self, capacity):
+        # type: (int) -> None
+        self.capacity = capacity
+        self.lock = Lock()
+
+        # Buffer is private. The name is mangled to discourage use. If you use this attribute
+        # directly you're on your own!
+        self.__buffer = LRUCache(capacity)
+
+    def clear(self):
+        # type: () -> None
+        self.__buffer = LRUCache(self.capacity)
+
+    def __deepcopy__(self, memo):
+        # type: (dict[int, Any]) -> FlagBuffer
+        with self.lock:
+            buffer = FlagBuffer(self.capacity)
+            buffer.__buffer = copy.deepcopy(self.__buffer, memo)
+            return buffer
+
+    def get(self):
+        # type: () -> list[FlagData]
+        with self.lock:
+            return [
+                {"flag": key, "result": value} for key, value in self.__buffer.get_all()
+            ]
+
+    def set(self, flag, result):
+        # type: (str, bool) -> None
+        if isinstance(result, FlagBuffer):
+            # If someone were to insert `self` into `self` this would create a circular dependency
+            # on the lock. This is of course a deadlock. However, this is far outside the expected
+            # usage of this class. We guard against it here for completeness and to document this
+            # expected failure mode.
+            raise ValueError(
+                "FlagBuffer instances can not be inserted into the dictionary."
+            )
+
+        with self.lock:
+            self.__buffer.set(flag, result)
+
+
+def add_feature_flag(flag, result):
+    # type: (str, bool) -> None
+    """
+    Records a flag and its value to be sent on subsequent error events.
+    We recommend you do this on flag evaluations. Flags are buffered per Sentry scope.
+    """
+    flags = sentry_sdk.get_isolation_scope().flags
+    flags.set(flag, result)
+
+    span = sentry_sdk.get_current_span()
+    if span:
+        span.set_flag(f"flag.evaluation.{flag}", result)