add top shellcmd plugin

config/config_defaults.php

@@ -139,6 +139,9 @@ return [
             'processes'=>[
                 'enabled'=>1,
             ],
+            'top'=>[
+                'enabled'=>1,
+            ],
         ],
     ],
     

public_html/deployment/plugins/shellcmd/top/config.json

+{
+    "command": "top -b -n 1 | head -20",
+    "icon": "fa-solid fa-arrow-up-wide-short",
+    "interval": 5000,
+    "window-cols": 50,
+    "window-lines": 30
+}
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public_html/deployment/plugins/shellcmd/top/info.json

+{
+    "name": "Top",
+    "description": "Show top processes",
+    "author": "Axel Hahn; University of Bern; Institute for Medical education",
+    
+    "version": "1.0",
+    "date": "2023-11-23",
+    "url": "[included]",
+    "license": "GNU GPL 3.0"
+}
+

public_html/deployment/plugins/shellcmd/top/plugin.php

+<?php
+/**
+ * 
+ * SHELLCMD PLUGIN :: top
+ * 
+ * ----------------------------------------------------------------------
+ * 2023-11-23  axel.hahn@unibe.ch
+ */
+class shellcmd_top {
+    /**
+     * @var fallback command line to exectute; command in config.josn has priority
+     */
+    protected $_command="top -b -n 1 | head -20";
+
+    /**
+     * constructor ... returns command
+     * @return string
+     */
+    public function __constructor(){
+        return $this->getCommand();
+    }
+
+    /**
+     * get command
+     * @return string
+     */
+    public function getCommand(){
+        return $this->_command;
+    }
+
+    /**
+     * parse output and extract wanted values in section "data"
+     * @return array
+     */
+    public function parsedata($aResult){
+        $aResult['data']=[
+            'count'=>count($aResult['output'])-1,
+        ];
+        return $aResult;
+    }
+
+}
+/*
+
+EXAMPLE OUTPUT
+...
+*/
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public_html/deployment/plugins/shellcmd/top/render.js

+/**
+ * 
+ * @param {array} aData 
+ * @returns 
+ */
+
+/**
+ * callback function for ubd: render html code
+ * @param {array} aData  json object
+ * @returns {string}
+ */
+function top_render(aData){
+    var sReturn='';
+    sReturn='<span style="float: right">'+aData['time']+'</span>'; // +' '+aData['command']+'</span>';
+    if(aData['data']['count']==0){
+        sReturn+='No activity<br><br>Command:<br>'
+        +aData['command'];
+    } else {
+        sReturn+='<pre>';
+        for(var i=0; i<aData['output'].length; i++){
+            // sReturn+='<div>'+aData['output'][i]+"</div>";
+            sReturn+=aData['output'][i]+"<br>";
+        }
+        sReturn+='</pre>';
+    }
+    return sReturn;
+}
+
+function top_init(){   
+    oUbdLoad=new ubd(
+        {
+            "domid":     "divPluginshellcmdtop",
+            "url":       "/deployment/plugins/shellcmd/getdata.php?plugin=top",
+            "renderer":  top_render,
+            "ttl":       5,
+        }
+    );
+    // oUbdLoad.render('waiting for first data...');
+    oUbdLoad.update();
+}
+
+window.setTimeout("top_init()", 200);
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