feat: Add new gcloud commands, API clients, and third-party libraries across various services.

gcloud auth application-default login/google-cloud-sdk/lib/third_party/cachetools/lru.py

@@ -0,0 +1,50 @@
+from __future__ import absolute_import
+
+import collections
+
+from .cache import Cache
+
+
+class LRUCache(Cache):
+  """Least Recently Used (LRU) cache implementation."""
+
+  def __init__(self, maxsize, getsizeof=None):
+    Cache.__init__(self, maxsize, getsizeof)
+    self.__order = collections.OrderedDict()
+
+  def __getitem__(self, key, cache_getitem=Cache.__getitem__):
+    value = cache_getitem(self, key)
+    self.__update(key)
+    return value
+
+  def __setitem__(self, key, value, cache_setitem=Cache.__setitem__):
+    cache_setitem(self, key, value)
+    self.__update(key)
+
+  def __delitem__(self, key, cache_delitem=Cache.__delitem__):
+    cache_delitem(self, key)
+    del self.__order[key]
+
+  def popitem(self):
+    """Remove and return the `(key, value)` pair least recently used."""
+    try:
+      key = next(iter(self.__order))
+    except StopIteration:
+      raise KeyError('%s is empty' % self.__class__.__name__)
+    else:
+      return (key, self.pop(key))
+
+  if hasattr(collections.OrderedDict, 'move_to_end'):
+
+    def __update(self, key):
+      try:
+        self.__order.move_to_end(key)
+      except KeyError:
+        self.__order[key] = None
+  else:
+
+    def __update(self, key):
+      try:
+        self.__order[key] = self.__order.pop(key)
+      except KeyError:
+        self.__order[key] = None