[2689] eliminate the need for threads from update_statistics_data_pt2

also fixed bugs in the main code; the previous one can cause unintentional
key error because it
- makes copy
- updates the copy
- refers to the original based on the assumption of updated data

src/bin/stats/stats.py.in

@@ -268,8 +268,7 @@ class Stats:
         # examining the third value from the array result of
         # 'show_processes' of Init
         seq = self.cc_session.group_sendmsg(
-            isc.config.ccsession.create_command("show_processes"),
-            'Init')
+            isc.config.ccsession.create_command("show_processes"), 'Init')
         (answer, env) = self.cc_session.group_recvmsg(False, seq)
         modules = []
         if answer:
@@ -550,8 +549,7 @@ class Stats:
                             # merge recursively old value and new
                             # value each other
                             _data[owner][mid] = \
-                                merge_oldnew(_data[owner][mid],
-                                             {_key: _val})
+                                merge_oldnew(_data[owner][mid], {_key: _val})
                         continue
                     # the key string might be a "xx/yy/zz[0]"
                     # type. try it.
@@ -561,9 +559,9 @@ class Stats:
                         if errors: errors.pop()
                         # try updata and check validation in adavance
                         __data = _data.copy()
-                        if owner not in _data:
+                        if owner not in __data:
                             __data[owner] = {}
-                        if mid not in _data[owner]:
+                        if mid not in __data[owner]:
                             __data[owner][mid] = {}
                         # use the isc.cc.data.set method
                         try:
@@ -572,10 +570,9 @@ class Stats:
                                 False, __data[owner][mid], errors):
                                 _data = __data
                         except Exception as e:
-                            errors.append(
-                                "%s: %s" % (e.__class__.__name__, e))
+                            errors.append("%s: %s" % (e.__class__.__name__, e))
             except KeyError:
-                errors.append("unknown module name: " + str(owner))
+                errors.append("unknown module name: " + owner)
             if not errors:
                 self.statistics_data_bymid = _data
 
@@ -598,8 +595,7 @@ class Stats:
                     # values are not replaced.
                     self.statistics_data[m] = merge_oldnew(
                         self.statistics_data[m],
-                        _accum_bymodule(
-                            self.statistics_data_bymid[m]))
+                        _accum_bymodule(self.statistics_data_bymid[m]))
 
         if errors: return errors
 

src/bin/stats/tests/b10-stats_test.py

@@ -624,42 +624,20 @@ class TestStats(unittest.TestCase):
 
     def test_update_statistics_data_pt2(self):
         """test for named_set-type statistics"""
-        self.stats = stats.Stats()
-        self.stats.do_polling()
-        _test_exp1 = {
-              'test10.example': {
-                  'queries.tcp': 5,
-                  'queries.udp': 4
-              }
-            }
-        _test_exp2 = {
-              'test20.example': {
-                  'queries.tcp': 3,
-                  'queries.udp': 2
-              }
-            }
+        self.stats = SimpleStats()
+        _test_exp1 = \
+            { 'test10.example': { 'queries.tcp': 5, 'queries.udp': 4 } }
+        _test_exp2 = \
+            { 'test20.example': { 'queries.tcp': 3, 'queries.udp': 2 } }
         _test_exp3 = {}
-        _test_exp4 = {
-              'test20.example': {
-                  'queries.udp': 4
-              }
-            }
-        _test_exp5_1 = {
-              'test10.example': {
-                 'queries.udp': 5432
-              }
-            }
+        _test_exp4 = { 'test20.example': { 'queries.udp': 4 } }
+        _test_exp5_1 = { 'test10.example': { 'queries.udp': 5432 } }
         _test_exp5_2 ={
               'nds_queries.perzone/test10.example/queries.udp':
-                  isc.cc.data.find(_test_exp5_1,
-                                   'test10.example/queries.udp')
-            }
-        _test_exp6 = {
-              'foo/bar':  'brabra'
-            }
-        _test_exp7 = {
-              'foo[100]': 'bar'
+                  isc.cc.data.find(_test_exp5_1, 'test10.example/queries.udp')
             }
+        _test_exp6 = { 'foo/bar':  'brabra' }
+        _test_exp7 = { 'foo[100]': 'bar' }
         # Success cases
         self.assertIsNone(self.stats.update_statistics_data(
             'Auth', 'foo1', {'nds_queries.perzone': _test_exp1}))
@@ -672,13 +650,15 @@ class TestStats(unittest.TestCase):
                              ['foo1']['nds_queries.perzone'],\
                          dict(_test_exp1,**_test_exp2))
         self.assertIsNone(self.stats.update_statistics_data(
-            'Auth', 'foo1', {'nds_queries.perzone': dict(_test_exp1,**_test_exp2)}))
+            'Auth', 'foo1', {'nds_queries.perzone':
+                                 dict(_test_exp1, **_test_exp2)}))
         self.assertEqual(self.stats.statistics_data_bymid['Auth']\
                              ['foo1']['nds_queries.perzone'],
-                         dict(_test_exp1,**_test_exp2))
+                         dict(_test_exp1, **_test_exp2))
         # differential update
         self.assertIsNone(self.stats.update_statistics_data(
-            'Auth', 'foo1', {'nds_queries.perzone': dict(_test_exp3,**_test_exp4)}))
+            'Auth', 'foo1', {'nds_queries.perzone':
+                                 dict(_test_exp3, **_test_exp4)}))
         _new_val = dict(_test_exp1,
                         **stats.merge_oldnew(_test_exp2,_test_exp4))
         self.assertEqual(self.stats.statistics_data_bymid['Auth']\
@@ -698,7 +678,8 @@ class TestStats(unittest.TestCase):
                              _test_exp5_1)
         # Error cases
         self.assertEqual(self.stats.update_statistics_data(
-                'Auth', 'foo1', {'nds_queries.perzone': None}), ['None should be a map'])
+                'Auth', 'foo1', {'nds_queries.perzone': None}),
+                         ['None should be a map'])
         self.assertEqual(self.stats.statistics_data_bymid['Auth']\
                              ['foo1']['nds_queries.perzone'],\
                              _new_val)