Initial commit of open source Workload Automation.

wlauto/external/louie/signal.py

@@ -0,0 +1,30 @@
+"""Signal class.
+
+This class is provided as a way to consistently define and document
+signal types.  Signal classes also have a useful string
+representation.
+
+Louie does not require you to use a subclass of Signal for signals.
+"""
+
+
+class _SIGNAL(type):
+    """Base metaclass for signal classes."""
+
+    def __str__(cls):
+        return '<Signal: %s>' % (cls.__name__, )
+
+
+class Signal(object):
+
+    __metaclass__ = _SIGNAL
+
+
+class All(Signal):
+    """Used to represent 'all signals'.
+
+    The All class can be used with connect, disconnect, send, or
+    sendExact to denote that the signal should react to all signals,
+    not just a particular signal.
+    """
+