Manual cherry-pick of opensearch-project#873

Signed-off-by: Chase Engelbrecht <[email protected]>

Author: engechas

src/main/java/org/opensearch/securityanalytics/mapper/MapperService.java

@@ -71,9 +71,11 @@ public void createMappingAction(String indexName, String ruleTopic, String alias
         // since you can't update documents in non-write indices
         String index = indexName;
         boolean shouldUpsertIndexTemplate = IndexUtils.isConcreteIndex(indexName, this.clusterService.state()) == false;
-        if (IndexUtils.isDataStream(indexName, this.clusterService.state())) {
+        if (IndexUtils.isDataStream(indexName, this.clusterService.state()) || IndexUtils.isAlias(indexName, this.clusterService.state())) {
+            log.debug("{} is an alias or datastream. Fetching write index for create mapping action.", indexName);
             String writeIndex = IndexUtils.getWriteIndex(indexName, this.clusterService.state());
             if (writeIndex != null) {
+                log.debug("Write index for {} is {}", indexName, writeIndex);
                 index = writeIndex;
             }
         }
@@ -85,6 +87,7 @@ public void onResponse(GetMappingsResponse getMappingsResponse) {
                 applyAliasMappings(getMappingsResponse.getMappings(), ruleTopic, aliasMappings, partial, new ActionListener<>() {
                     @Override
                     public void onResponse(Collection<CreateMappingResult> createMappingResponse) {
+                        log.debug("Completed create mappings for {}", indexName);
                         // We will return ack==false if one of the requests returned that
                         // else return ack==true
                         Optional<AcknowledgedResponse> notAckd = createMappingResponse.stream()
@@ -103,6 +106,7 @@ public void onResponse(Collection<CreateMappingResult> createMappingResponse) {
 
                     @Override
                     public void onFailure(Exception e) {
+                        log.debug("Failed to create mappings for {}", indexName );
                         actionListener.onFailure(e);
                     }
                 });

src/main/java/org/opensearch/securityanalytics/rules/backend/OSQueryBackend.java

@@ -331,6 +331,8 @@ public Object convertConditionFieldEqValQueryExpr(ConditionFieldEqualsValueExpre
 
     @Override
     public Object convertConditionValStr(ConditionValueExpression condition) throws SigmaValueError {
+        String field = getFinalValueField();
+        ruleQueryFields.put(field, Map.of("type", "text", "analyzer", "rule_analyzer"));
         SigmaString value = (SigmaString) condition.getValue();
         boolean containsWildcard = value.containsWildcard();
         return String.format(Locale.getDefault(), (containsWildcard? this.unboundWildcardExpression: this.unboundValueStrExpression), this.convertValueStr((SigmaString) condition.getValue()));