some cleanups

Author: mindw

checkstyle.xml

@@ -86,7 +86,6 @@ page at http://checkstyle.sourceforge.net/config.html -->
             <property name="allowMissingReturnTag" value="true"/>
             <property name="allowMissingThrowsTags" value="true"/>
             <property name="allowThrowsTagsForSubclasses" value="true"/>
-            <property name="allowUndeclaredRTE" value="true"/>
         </module>
 
         <module name="JavadocType">

gradlew

@@ -1,7 +1,7 @@
 #!/bin/sh
 
 #
-# Copyright © 2015-2021 the original authors.
+# Copyright © 2015-2021 the original authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -32,10 +32,10 @@
 #       Busybox and similar reduced shells will NOT work, because this script
 #       requires all of these POSIX shell features:
 #         * functions;
-#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
-#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
-#         * compound commands having a testable exit status, especially «case»;
-#         * various built-in commands including «command», «set», and «ulimit».
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
 #
 #   Important for patching:
 #

src/main/java/org/compuscene/metrics/prometheus/PrometheusMetricsCollector.java

@@ -861,11 +861,12 @@ private void updateOsMetrics(OsStats os) {
             }
 
             if (os.getMem() != null) {
-                catalog.setNodeGauge("os_mem_free_bytes", os.getMem().getFree().getBytes());
-                catalog.setNodeGauge("os_mem_free_percent", os.getMem().getFreePercent());
-                catalog.setNodeGauge("os_mem_used_bytes", os.getMem().getUsed().getBytes());
-                catalog.setNodeGauge("os_mem_used_percent", os.getMem().getUsedPercent());
-                catalog.setNodeGauge("os_mem_total_bytes", os.getMem().getTotal().getBytes());
+                final var mem = os.getMem();
+                catalog.setNodeGauge("os_mem_free_bytes", mem.getFree().getBytes());
+                catalog.setNodeGauge("os_mem_free_percent", mem.getFreePercent());
+                catalog.setNodeGauge("os_mem_used_bytes", mem.getUsed().getBytes());
+                catalog.setNodeGauge("os_mem_used_percent", mem.getUsedPercent());
+                catalog.setNodeGauge("os_mem_total_bytes", mem.getTotal().getBytes());
             }
 
             if (os.getSwap() != null) {