Use regular pickle module from stdlib

reflex/state.py

@@ -9,6 +9,7 @@ import dataclasses
 import functools
 import inspect
 import os
+import pickle
 import uuid
 from abc import ABC, abstractmethod
 from collections import defaultdict
@@ -19,6 +20,7 @@ from typing import (
     TYPE_CHECKING,
     Any,
     AsyncIterator,
+    BinaryIO,
     Callable,
     ClassVar,
     Dict,
@@ -76,6 +78,7 @@ from reflex.utils.exceptions import (
     ImmutableStateError,
     LockExpiredError,
     SetUndefinedStateVarError,
+    StateSchemaMismatchError,
 )
 from reflex.utils.exec import is_testing_env
 from reflex.utils.serializers import serializer
@@ -1914,7 +1917,7 @@ class BaseState(Base, ABC, extra=pydantic.Extra.allow):
     def __getstate__(self):
         """Get the state for redis serialization.
 
-        This method is called by cloudpickle to serialize the object.
+        This method is called by pickle to serialize the object.
 
         It explicitly removes parent_state and substates because those are serialized separately
         by the StateManagerRedis to allow for better horizontal scaling as state size increases.
@@ -1930,6 +1933,43 @@ class BaseState(Base, ABC, extra=pydantic.Extra.allow):
         state["__dict__"].pop("_was_touched", None)
         return state
 
+    def _serialize(self) -> bytes:
+        """Serialize the state for redis.
+
+        Returns:
+            The serialized state.
+        """
+        return pickle.dumps((state_to_schema(self), self))
+
+    @classmethod
+    def _deserialize(
+        cls, data: bytes | None = None, fp: BinaryIO | None = None
+    ) -> BaseState:
+        """Deserialize the state from redis/disk.
+
+        data and fp are mutually exclusive, but one must be provided.
+
+        Args:
+            data: The serialized state data.
+            fp: The file pointer to the serialized state data.
+
+        Returns:
+            The deserialized state.
+
+        Raises:
+            ValueError: If both data and fp are provided, or neither are provided.
+            StateSchemaMismatchError: If the state schema does not match the expected schema.
+        """
+        if data is not None and fp is None:
+            (substate_schema, state) = pickle.loads(data)
+        elif fp is not None and data is None:
+            (substate_schema, state) = pickle.load(fp)
+        else:
+            raise ValueError("Only one of `data` or `fp` must be provided")
+        if substate_schema != state_to_schema(state):
+            raise StateSchemaMismatchError()
+        return state
+
 
 class State(BaseState):
     """The app Base State."""
@@ -2086,7 +2126,11 @@ class ComponentState(State, mixin=True):
         """
         cls._per_component_state_instance_count += 1
         state_cls_name = f"{cls.__name__}_n{cls._per_component_state_instance_count}"
-        component_state = type(state_cls_name, (cls, State), {}, mixin=False)
+        component_state = type(
+            state_cls_name, (cls, State), {"__module__": __name__}, mixin=False
+        )
+        # Save a reference to the dynamic state for pickle/unpickle.
+        globals()[state_cls_name] = component_state
         component = component_state.get_component(*children, **props)
         component.State = component_state
         return component
@@ -2552,7 +2596,7 @@ def is_serializable(value: Any) -> bool:
         Whether the value is serializable.
     """
     try:
-        return bool(dill.dumps(value))
+        return bool(pickle.dumps(value))
     except Exception:
         return False
 
@@ -2688,8 +2732,7 @@ class StateManagerDisk(StateManager):
         if token_path.exists():
             try:
                 with token_path.open(mode="rb") as file:
-                    (substate_schema, substate) = dill.load(file)
-                if substate_schema == state_to_schema(substate):
+                    substate = BaseState._deserialize(fp=file)
                     await self.populate_substates(client_token, substate, root_state)
                     return substate
             except Exception:
@@ -2747,7 +2790,7 @@ class StateManagerDisk(StateManager):
 
         self.states[substate_token] = substate
 
-        state_dilled = dill.dumps((state_to_schema(substate), substate))
+        state_dilled = substate._serialize()
         if not self.states_directory.exists():
             self.states_directory.mkdir(parents=True, exist_ok=True)
         self.token_path(substate_token).write_bytes(state_dilled)
@@ -2948,7 +2991,7 @@ class StateManagerRedis(StateManager):
 
         if redis_state is not None:
             # Deserialize the substate.
-            state = dill.loads(redis_state)
+            state = BaseState._deserialize(data=redis_state)
 
             # Populate parent state if missing and requested.
             if parent_state is None:
@@ -3060,7 +3103,7 @@ class StateManagerRedis(StateManager):
             )
         # Persist only the given state (parents or substates are excluded by BaseState.__getstate__).
         if state._get_was_touched():
-            pickle_state = dill.dumps(state, byref=True)
+            pickle_state = state._serialize()
             self._warn_if_too_large(state, len(pickle_state))
             await self.redis.set(
                 _substate_key(client_token, state),

reflex/utils/exceptions.py

@@ -123,3 +123,7 @@ class DynamicComponentMissingLibrary(ReflexError, ValueError):
 
 class SetUndefinedStateVarError(ReflexError, AttributeError):
     """Raised when setting the value of a var without first declaring it."""
+
+
+class StateSchemaMismatchError(ReflexError, TypeError):
+    """Raised when the serialized schema of a state class does not match the current schema."""