webui: Timezone support for graylog (#7799)

* added timezone support for graylog

* using default user timezone if none is configured

* newline fix, added copyrights

* copyright correction

* copyright correction

* copyright fix

html/includes/common/graylog.inc.php

@@ -1,5 +1,4 @@
 <?php
-
 /*
  * LibreNMS
  *
@@ -10,7 +9,13 @@
  * Free Software Foundation, either version 3 of the License, or (at your
  * option) any later version.  Please see LICENSE.txt at the top level of
  * the source code distribution for details.
- */
+ *
+ * @package    LibreNMS
+ * @subpackage webui
+ * @link       http://librenms.org
+ * @copyright  2017 LibreNMS
+ * @author     LibreNMS Contributors
+*/
 
 if (empty($results_limit)) {
     $results_limit = 25;
@@ -21,7 +26,7 @@ $tmp_output = '<h3>Graylog</h3>
     <table id="graylog" class="table table-hover table-condensed graylog">
         <thead>
             <tr>
-                <th data-column-id="timestamp">Timestamp</th>
+                <th data-column-id="timestamp" data-formatter="browserTime">Timestamp</th>
                 <th data-column-id="source">Source</th>
                 <th data-column-id="message">Message</th>
                 <th data-column-id="facility" data-visible="false">Facility</th>
@@ -71,6 +76,12 @@ if (empty($filter_device) && isset($_POST['hostname'])) {
     $filter_device = mres($_POST['hostname']);
 }
 
+if (isset($config['graylog']['timezone'])) {
+    $timezone = 'row.timestamp;';
+} else {
+    $timezone = 'moment.parseZone(row.timestamp).local().format("YYYY-MM-DD HH:MM:SS");';
+}
+
 $tmp_output .= '
                 "<div class=\"form-group\"><select name=\"range\" class=\"form-group input-sm\">"+
                 "<option value=\"300\">Search last 5 minutes</option>"+
@@ -94,6 +105,11 @@ $tmp_output .= '
     var graylog_grid = $("#graylog").bootgrid({
         ajax: true,
         rowCount: ['. $results_limit .', 25,50,100,250,-1],
+        formatters: {
+            "browserTime": function(column, row) {
+                return '.$timezone.'
+            }
+        },
 ';
 
 if (isset($no_form) && $no_form !== true) {