Log warning message and rethrow exceptions from events. (#1207)

Closes #1206.

Author: mikereiche

src/main/java/org/springframework/data/couchbase/core/CouchbaseTemplateSupport.java

@@ -182,7 +182,8 @@ public void maybeEmitEvent(CouchbaseMappingEvent<?> event) {
 			try {
 				this.applicationContext.publishEvent(event);
 			} catch (Exception e) {
-				LOG.error("exception emitting event "+event, e);
+				LOG.warn("{} thrown during {}", e, event);
+				throw e;
 			}
 		} else {
 			LOG.info("maybeEmitEvent called, but CouchbaseTemplate not initialized with applicationContext");

src/main/java/org/springframework/data/couchbase/core/ReactiveCouchbaseTemplateSupport.java

@@ -189,7 +189,8 @@ public void maybeEmitEvent(CouchbaseMappingEvent<?> event) {
 			try {
 				this.applicationContext.publishEvent(event);
 			} catch (Exception e) {
-				LOG.error("exception emitting event "+event, e);
+				LOG.warn("{} thrown during {}", e, event);
+				throw e;
 			}
 		} else {
 			LOG.info("maybeEmitEvent called, but ReactiveCouchbaseTemplate not initialized with applicationContext");