Persisted singleton

diff --git a/persistent_state.py b/persistent_state.py
deleted file mode 100644 (file)
index 1607b5e..0000000
--- a/persistent_state.py
+++ /dev/null
@@ -1,51 +0,0 @@
-#!/usr/bin/env python3
-
-import pickle
-from typing import Any, Mapping
-
-import file_utils
-
-
-class PersistentState(object):
-    """
-    An object that behaves like a persistent hash map; it can be
-    accessed to store key-value pairs but also saved to disk and read
-    back from disk easily.
-
-    """
-    def __init__(self, filename: str, *, max_age_sec: int = None):
-        self.filename = filename
-        if file_utils.does_file_exist(self.filename):
-            if max_age_sec is not None:
-                age = file_utils.get_file_mtime_age_seconds(self.filename)
-                if age < max_age_sec:
-                    self.state = self.load()
-                else:
-                    self.state = {}
-            else:
-                self.state = self.load()
-        else:
-            self.state = {}
-
-    def __getitem__(self, key: str) -> Any:
-        return self.state.get(key, "")
-
-    def __setitem__(self, key: str, value: Any):
-        self.state[key] = value
-
-    def __delitem__(self, key: str):
-        del self.state[key]
-
-    def __iter__(self):
-        return iter(self.state)
-
-    def __len__(self):
-        return len(self.state)
-
-    def save(self) -> None:
-        with open(self.filename, 'wb') as f:
-            pickle.dump(self.state, f, pickle.HIGHEST_PROTOCOL)
-
-    def load(self) -> Mapping[str, Any]:
-        with open(self.filename, 'rb') as f:
-            return(pickle.load(f))

diff --git a/tests/persistent_state_test.py b/tests/persistent_state_test.py
deleted file mode 100755 (executable)
index f9afdde..0000000
--- a/tests/persistent_state_test.py
+++ /dev/null
@@ -1,33 +0,0 @@
-#!/usr/bin/env python3
-
-import os
-import unittest
-
-import bootstrap
-import persistent_state as ps
-
-import unittest_utils as uu
-
-
-class TestPersistentState(unittest.TestCase):
-    def test_it_all_baby(self):
-        filename = '/tmp/.persistent_state_test.bin'
-        os.system(f'/bin/rm {filename}')
-        s = ps.PersistentState(filename)
-        self.assertEqual(0, len(s))
-        s['test'] = 123
-        self.assertEqual(123, s['test'])
-        self.assertEqual(1, len(s))
-        s['ing'] = 234
-        self.assertEqual(2, len(s))
-        del s['ing']
-        self.assertEqual(1, len(s))
-        s.save()
-        t = ps.PersistentState(filename)
-        self.assertEqual(1, len(t))
-        self.assertEqual(123, t['test'])
-
-
-if __name__ == '__main__':
-    bootstrap.initialize(unittest.main)()
-