change json alias

Signed-off-by: Katherine Shen <[email protected]>

data-prepper-plugins/date-processor/src/main/java/org/opensearch/dataprepper/plugins/processor/date/DateProcessorConfig.java

@@ -155,8 +155,8 @@ public static boolean isValidPattern(final String pattern) {
     })
     private String outputFormat = DEFAULT_OUTPUT_FORMAT;
 
-    @JsonProperty("to_origination_metadata")
-    @JsonAlias("origination_timestamp_to_metadata")
+    @JsonProperty("origination_timestamp_to_metadata")
+    @JsonAlias("to_origination_metadata")
     @JsonPropertyDescription("Include the origination timestamp in the metadata. " +
             "Enabling this option will use this timestamp to report the EndToEndLatency metric " +
             "when events reach the sink. Default is <code>false</code>.")

data-prepper-plugins/flatten-processor/src/main/java/org/opensearch/dataprepper/plugins/processor/flatten/FlattenProcessorConfig.java

@@ -44,14 +44,14 @@ public class FlattenProcessorConfig {
     })
     private String target;
 
-    @JsonProperty("remove_processed_fields")
-    @JsonAlias("remove_source_keys")
+    @JsonProperty("remove_source_keys")
+    @JsonAlias("remove_processed_fields")
     @JsonPropertyDescription("When <code>true</code>, the processor removes all processed fields from the source. " +
             "The default is <code>false</code> which leaves the source fields.")
     private boolean removeProcessedFields = false;
 
-    @JsonProperty(REMOVE_LIST_INDICES_KEY)
-    @JsonAlias("remove_list_items")
+    @JsonProperty("remove_list_items")
+    @JsonAlias(REMOVE_LIST_INDICES_KEY)
     @JsonPropertyDescription("When <code>true</code>, the processor converts the fields from the source map into lists and " +
             "puts the lists into the target field. Default is <code>false</code>.")
     private boolean removeListIndices = false;

data-prepper-plugins/mutate-event-processors/src/main/java/org/opensearch/dataprepper/plugins/processor/mutateevent/ConvertEntryTypeProcessorConfig.java

@@ -56,8 +56,8 @@ public class ConvertEntryTypeProcessorConfig implements ConverterArguments {
     @JsonPropertyDescription("Target type for the values. Default value is <code>integer</code>.")
     private TargetType type = TargetType.INTEGER;
 
-    @JsonProperty("null_values")
-    @JsonAlias("null_conversion_values")
+    @JsonProperty("null_conversion_values")
+    @JsonAlias("null_values")
     @JsonPropertyDescription("String representation of what constitutes a null value. If the field value equals one of these strings, then the value is considered null and is converted to null.")
     private List<String> nullValues;