AMBARI-24959. Log Search: show log level filters enabled or disabled on /info/features endpoint (#44)

diff --git a/ambari-logsearch-server/src/main/java/org/apache/ambari/logsearch/common/LogSearchConstants.java b/ambari-logsearch-server/src/main/java/org/apache/ambari/logsearch/common/LogSearchConstants.java
index 7db839f..a0c5aa9 100644
--- a/ambari-logsearch-server/src/main/java/org/apache/ambari/logsearch/common/LogSearchConstants.java
+++ b/ambari-logsearch-server/src/main/java/org/apache/ambari/logsearch/common/LogSearchConstants.java
@@ -62,6 +62,7 @@
   public static final String SORT = "sort";
 
   // info features constants
+  public static final String LOG_LEVEL_FILTERS_KEY = "log_level_filters";
   public static final String SHIPPER_CONFIG_API_KEY = "metadata_patterns";
   public static final String AUTH_FEATURE_KEY = "auth";
 
diff --git a/ambari-logsearch-server/src/main/java/org/apache/ambari/logsearch/manager/InfoManager.java b/ambari-logsearch-server/src/main/java/org/apache/ambari/logsearch/manager/InfoManager.java
index 3aabdbf..687bf0b 100644
--- a/ambari-logsearch-server/src/main/java/org/apache/ambari/logsearch/manager/InfoManager.java
+++ b/ambari-logsearch-server/src/main/java/org/apache/ambari/logsearch/manager/InfoManager.java
@@ -81,6 +81,8 @@
     Map<String, Object> featuresMap = new HashMap<>();
     featuresMap.put(LogSearchConstants.AUTH_FEATURE_KEY, getAuthMap());
     featuresMap.put(LogSearchConstants.SHIPPER_CONFIG_API_KEY, logSearchConfigApiConfig.isConfigApiEnabled());
+    boolean logLevelFiltersEnabled = logSearchConfigApiConfig.isConfigApiEnabled() || logSearchConfigApiConfig.isSolrFilterStorage() || logSearchConfigApiConfig.isZkFilterStorage();
+    featuresMap.put(LogSearchConstants.LOG_LEVEL_FILTERS_KEY, logLevelFiltersEnabled);
     return featuresMap;
   }