[tauruslib-devel] [PATCH 2/5] Added a hook argument to execute an extra callback after filterEvent. This functionality is used to do some custom event buffering.

[<sr...@ce...>]

From: Sergio Rubio Manrique <sr...@ce...>

---
 lib/taurus/core/util/eventfilters.py | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/lib/taurus/core/util/eventfilters.py b/lib/taurus/core/util/eventfilters.py
index 8dc52a1..52eb0ba 100644
--- a/lib/taurus/core/util/eventfilters.py
+++ b/lib/taurus/core/util/eventfilters.py
@@ -156,8 +156,7 @@ class RepeatedEventFilter(object):
         self._lastValues[(s, t)] =  new_value
         return s, t, v
 
-
-def filterEvent(evt_src=-1, evt_type=-1, evt_value=-1, filters=()):
+def filterEvent(evt_src=-1, evt_type=-1, evt_value=-1 ,filters=(), hook=None):
     """The event is processed by each and all filters in strict order
     unless one of them returns None (in which case the event is discarded)
 
@@ -168,6 +167,8 @@ def filterEvent(evt_src=-1, evt_type=-1, evt_value=-1, filters=()):
                     either None (to discard the event) or the tuple (with 
                     possibly transformed values) of 
                     (evt_src, evt_type, evt_value)
+    :param hook: a callable to be executed if the event passed all the filters; 
+                 if None, then just returns the event
     
     :return: (None or tuple) The result of piping the event through the given 
              filters.
@@ -178,4 +179,8 @@ def filterEvent(evt_src=-1, evt_type=-1, evt_value=-1, filters=()):
         evt = f(*evt)
         if evt is None:
             return None
-    return evt
+
+    if hook:
+        return hook(*evt)
+    else:
+        return evt
-- 
2.4.6