added LoggingEmitter

saucebrush/emitters.py

@@ -193,3 +193,22 @@ class MongoDBEmitter(Emitter):
 
     def emit_record(self, record):
         self.collection.insert(record)
+
+
+class LoggingEmitter(Emitter):
+    """ Emitter that logs to a Python logging.Logger instance.
+
+        The msg_template will be passed the record being emitted as
+        a format parameter. The resulting message will get logged
+        at the provided level.
+    """
+    import logging
+
+    def __init__(self, logger, msg_template, level=logging.DEBUG):
+        super(LoggingEmitter, self).__init__()
+        self.logger = logger
+        self.msg_template = msg_template
+        self.level = level
+
+    def emit_record(self, record):
+        self.logger.log(self.level, self.msg_template % record)