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config/custom_components/ecoflow_cloud/mqtt/utils.py

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+from collections import OrderedDict
+from typing import Callable, List, TypeVar
+
+
+class LimitedSizeOrderedDict(OrderedDict):
+    def __init__(self, maxlen=20):
+        """Initialize a new DedupStore."""
+        super().__init__()
+        self.maxlen = maxlen
+
+    def append(self, key, val, on_delete: Callable = None):
+        self[key] = val
+        self.move_to_end(key)
+        if len(self) > self.maxlen:
+            # Removes the first record which should also be the oldest
+            itm = self.popitem(last=False)
+            if on_delete:
+                on_delete(itm)
+
+
+_T = TypeVar("_T")
+
+
+class BoundFifoList(List):
+
+    def __init__(self, maxlen=20) -> None:
+        super().__init__()
+        self.maxlen = maxlen
+
+    def append(self, __object: _T) -> None:
+        super().insert(0, __object)
+        while len(self) >= self.maxlen:
+            self.pop()
+