Add sync for persisted store backend

CHANGELOG

@@ -1,3 +1,5 @@
+- 0.0.11
+	* Add sync from persisted store
 - 0.0.10
 	* Implement move, set, unset on persisted store
 - 0.0.9

setup.cfg

@@ -1,6 +1,6 @@
 [metadata]
 name = shep
-version = 0.0.10
+version = 0.0.11
 description = Multi-state key stores using bit masks
 author = Louis Holbrook
 author_email = dev@holbrook.no

shep/persist.py

@@ -1,5 +1,6 @@
 # local imports
 from .state import State
+from .error import StateItemExists
 
 
 class PersistedState(State):
@@ -79,3 +80,13 @@ class PersistedState(State):
 
         self.__stores[k].remove(key)
         super(PersistedState, self).purge(key)
+
+
+    def sync(self, state):
+        k = self.name(state)
+
+        for o in self.__stores[k].list():
+            try:
+                super(PersistedState, self).put(o[0], state=state, contents=o[1])
+            except StateItemExists:
+                pass

shep/store/file.py

@@ -44,6 +44,19 @@ class SimpleFileStore:
         return r
 
 
+    def list(self):
+        files = []
+        for p in os.listdir(self.path):
+            fp = os.path.join(self.path, p)
+            f = open(fp, 'r')
+            r = f.read()
+            f.close()
+            if len(r) == 0:
+                r = None
+            files.append((p, r,))
+        return files
+
+
 class SimpleFileStoreFactory:
 
     def __init__(self, path):

tests/test_file.py

@@ -117,5 +117,25 @@ class TestStateReport(unittest.TestCase):
             os.stat(fp)
 
 
+    def test_sync(self):
+        self.states.put('abcd', state=self.states.FOO, contents='foo')
+        self.states.put('xxx', state=self.states.FOO)
+        self.states.put('yyy', state=self.states.FOO)
+       
+        fp = os.path.join(self.d, 'FOO', 'yyy')
+        f = open(fp, 'w')
+        f.write('')
+        f.close()
+
+        fp = os.path.join(self.d, 'FOO', 'zzzz')
+        f = open(fp, 'w')
+        f.write('xyzzy')
+        f.close()
+
+        self.states.sync(self.states.FOO)
+        self.assertEqual(self.states.get('yyy'), None)
+        self.assertEqual(self.states.get('zzzz'), 'xyzzy')
+        
+
 if __name__ == '__main__':
     unittest.main()