changed request parser logging to not log at error level (#122)

Author: kristinapathak

CHANGELOG.md

@@ -5,6 +5,8 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+- Changed logging for requestParser to log INFO or WARNING instead of ERROR 
+  on failures to create the record [#122](https://github.com/xmidt-org/svalinn/pull/122)
 
 ## [v0.13.0]
 - Updated release pipeline to use travis [#117](https://github.com/xmidt-org/svalinn/pull/117)

requestParser/requestParser.go

@@ -181,7 +181,12 @@ func (r *RequestParser) parseRequest(request wrp.Message) {
 	record, reason, err := r.createRecord(request, rule, eventType)
 	if err != nil {
 		r.measures.DroppedEventsCount.With(reasonLabel, reason).Add(1.0)
-		logging.Error(r.logger, emperror.Context(err)...).Log(logging.MessageKey(),
+		if reason == blackListReason {
+			logging.Info(r.logger, emperror.Context(err)...).Log(logging.MessageKey(),
+				"Failed to create record", logging.ErrorKey(), err.Error())
+			return
+		}
+		logging.Warn(r.logger, emperror.Context(err)...).Log(logging.MessageKey(),
 			"Failed to create record", logging.ErrorKey(), err.Error())
 		return
 	}