restoring feature flag for later use

Author: masseyke

server/src/main/java/org/elasticsearch/cluster/metadata/DataStream.java

@@ -34,6 +34,7 @@
 import org.elasticsearch.common.settings.Settings;
 import org.elasticsearch.common.time.DateFormatter;
 import org.elasticsearch.common.time.DateFormatters;
+import org.elasticsearch.common.util.FeatureFlag;
 import org.elasticsearch.common.xcontent.XContentHelper;
 import org.elasticsearch.core.FixForMultiProject;
 import org.elasticsearch.core.Nullable;
@@ -79,6 +80,7 @@ public final class DataStream implements SimpleDiffable<DataStream>, ToXContentO
     private static final Logger LOGGER = LogManager.getLogger(DataStream.class);
 
     public static final NodeFeature DATA_STREAM_FAILURE_STORE_FEATURE = new NodeFeature("data_stream.failure_store");
+    public static final boolean LOGS_STREAM_FEATURE_FLAG = new FeatureFlag("logs_stream").isEnabled();
     public static final TransportVersion ADDED_FAILURE_STORE_TRANSPORT_VERSION = TransportVersions.V_8_12_0;
     public static final TransportVersion ADDED_AUTO_SHARDING_EVENT_VERSION = TransportVersions.V_8_14_0;
     public static final TransportVersion ADD_DATA_STREAM_OPTIONS_VERSION = TransportVersions.V_8_16_0;