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[tor-commits] [stem/master] Support for CONF_CHANGED events



commit bb458df4ac47c1405ce7e7f7e3e15ececf485b4b
Author: Damian Johnson <atagar@xxxxxxxxxxxxxx>
Date:   Mon Dec 3 08:21:50 2012 -0800

    Support for CONF_CHANGED events
    
    Implementation and testing for CONF_CHANGED events. Got the test data by
    issuing a SETCONF request...
    
    SETEVENTS CONF_CHANGED
    250 OK
    SETCONF ExitNodes=caerSidi MaxCircuitDirtiness=20 ExitPolicy
    650-CONF_CHANGED
    650-ExitNodes=caerSidi
    650-ExitPolicy
    650-MaxCircuitDirtiness=20
    650 OK
    250 OK
---
 stem/control.py              |    1 +
 stem/response/events.py      |   32 ++++++++++++++++++++++++++++++++
 test/unit/response/events.py |   21 +++++++++++++++++++++
 3 files changed, 54 insertions(+), 0 deletions(-)

diff --git a/stem/control.py b/stem/control.py
index ec3273a..43229b5 100644
--- a/stem/control.py
+++ b/stem/control.py
@@ -84,6 +84,7 @@ providing its own for interacting at a higher level.
   **BW**                :class:`stem.response.events.BandwidthEvent`
   **CIRC**              :class:`stem.response.events.CircuitEvent`
   **CLIENTS_SEEN**      :class:`stem.response.events.ClientsSeenEvent`
+  **CONF_CHANGED**      :class:`stem.response.events.ConfChangedEvent`
   **DEBUG**             :class:`stem.response.events.LogEvent`
   **DESCCHANGED**       :class:`stem.response.events.DescChangedEvent`
   **ERR**               :class:`stem.response.events.LogEvent`
diff --git a/stem/response/events.py b/stem/response/events.py
index 98e1bf3..bf74fce 100644
--- a/stem/response/events.py
+++ b/stem/response/events.py
@@ -424,6 +424,37 @@ class ClientsSeenEvent(Event):
       
       self.ip_versions = protocol_to_count
 
+class ConfChangedEvent(Event):
+  """
+  Event that indicates that our configuration changed, either in response to a
+  SETCONF or RELOAD signal.
+  
+  :var dict config: mapping of configuration options to their new values
+    (**None** of the option is being unset)
+  """
+  
+  _SKIP_PARSING = True
+  
+  def _parse(self):
+    self.config = {}
+    
+    # Skip first and last line since they're the header and footer. For
+    # instance...
+    #
+    # 650-CONF_CHANGED
+    # 650-ExitNodes=caerSidi
+    # 650-ExitPolicy
+    # 650-MaxCircuitDirtiness=20
+    # 650 OK
+    
+    for line in str(self).splitlines()[1:-1]:
+      if '=' in line:
+        key, value = line.split('=', 1)
+      else:
+        key, value = line, None
+      
+      self.config[key] = value
+
 class DescChangedEvent(Event):
   """
   Event that indicates that our descriptor has changed. This was first added in
@@ -754,6 +785,7 @@ EVENT_TYPE_TO_CLASS = {
   "BW": BandwidthEvent,
   "CIRC": CircuitEvent,
   "CLIENTS_SEEN": ClientsSeenEvent,
+  "CONF_CHANGED": ConfChangedEvent,
   "DEBUG": LogEvent,
   "DESCCHANGED": DescChangedEvent,
   "ERR": LogEvent,
diff --git a/test/unit/response/events.py b/test/unit/response/events.py
index 6d5f0d3..f6a4b85 100644
--- a/test/unit/response/events.py
+++ b/test/unit/response/events.py
@@ -60,6 +60,15 @@ TimeStarted="2008-12-25 23:50:43" \
 CountrySummary=us=16,de=8,uk=8 \
 IPVersions=v4=16,v6=40'
 
+# CONF_CHANGED event from tor 0.2.3.16.
+
+CONF_CHANGED_EVENT = """650-CONF_CHANGED
+650-ExitNodes=caerSidi
+650-ExitPolicy
+650-MaxCircuitDirtiness=20
+650 OK
+"""
+
 # GUARD events from tor v0.2.1.30.
 
 GUARD_NEW = "650 GUARD ENTRY $36B5DBA788246E8369DBAF58577C6BC044A9A374 NEW"
@@ -397,6 +406,18 @@ class TestEvents(unittest.TestCase):
     self.assertEqual({'us': 16, 'de': 8, 'uk': 8}, event.locales)
     self.assertEqual({'v4': 16, 'v6': 40}, event.ip_versions)
   
+  def test_conf_changed(self):
+    event = _get_event(CONF_CHANGED_EVENT)
+    
+    expected_config = {
+      'ExitNodes': 'caerSidi',
+      'MaxCircuitDirtiness': '20',
+      'ExitPolicy': None,
+    }
+    
+    self.assertTrue(isinstance(event, stem.response.events.ConfChangedEvent))
+    self.assertEqual(expected_config, event.config)
+  
   def test_descchanged_event(self):
     # all we can check for is that the event is properly parsed as a
     # DescChangedEvent instance



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