newdevice: Added Current Connections Graph for Cisco WSA (#6734)

* Added current connections graph for AsyncOS devices

* Fixed issues with AsyncOS connections polling and add name to AUTHORS file

* Update 194.sql

AUTHORS.md

@@ -205,6 +205,7 @@ LibreNMS contributors:
 - Dominik Bay <db@rrbone.net> (eimann)
 - Nick Peelman <nick@peelman.us> (peelman)
 - Patrick Ryon <patrick@slashdoom.com> (slashdoom)
+- Mike Williams <mike@mgww.net> (network-guy)
 
 Observium was written by:
 - Adam Armstrong

html/includes/graphs/device/asyncos_conns.inc.php

@@ -0,0 +1,19 @@
+<?php
+
+$rrd_filename = rrd_name($device['hostname'], 'asyncos_conns');
+
+require 'includes/graphs/common.inc.php';
+
+$ds = 'connections';
+
+$colour_area = '9999cc';
+$colour_line = '0000cc';
+
+$colour_area_max = '9999cc';
+
+$graph_max = 1;
+$graph_min = 0;
+
+$unit_text = 'Connections';
+
+require 'includes/graphs/generic_simplex.inc.php';

includes/definitions/asyncos.yaml

@@ -6,6 +6,7 @@ over:
     - { graph: device_bits, text: Traffic }
     - { graph: device_processor, text: 'CPU Usage' }
     - { graph: device_mempool, text: 'Memory Usage' }
+    - { graph: device_asyncos_conns, text: 'Current Connections' }
 discovery:
     - sysObjectId:
         - .1.3.6.1.4.1.15497.1

includes/polling/os/asyncos.inc.php

@@ -2,14 +2,20 @@
 /*
  * LibreNMS Cisco AsyncOS information module
  *
- * Copyright (c) 2017 Mike Williams <mike@mgww.net>
  * This program is free software: you can redistribute it and/or modify it
  * under the terms of the GNU General Public License as published by the
  * 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
+ * @link       http://librenms.org
+ * @copyright  2017 Mike Williams
+ * @author     Mike Williams <mike@mgww.net>
  */
 
+use LibreNMS\RRD\RrdDefinition;
+
 list($hardware,$version,,$serial) = explode(',', $device['sysDescr']);
 
 preg_match('/\w[\d]+\w?/', $hardware, $regexp_results);
@@ -20,3 +26,24 @@ $version = $regexp_results[0];
 
 preg_match('/[[\w]+-[\w]+/', $serial, $regexp_results);
 $serial = $regexp_results[0];
+
+$sysobjectid = $poll_device['sysObjectID'];
+
+# Get stats only if device is web proxy
+if (strcmp($sysobjectid, 'enterprises.15497.1.2') == 0) {
+    $connections = snmp_get($device, 'tcpCurrEstab.0', '-OQv', 'TCP-MIB');
+
+    if (is_numeric($connections)) {
+        $rrd_name = 'asyncos_conns';
+        $rrd_def = RrdDefinition::make()->addDataset('connections', 'GAUGE', 0, 50000);
+
+        $fields = array(
+            'connections' => $connections,
+        );
+
+        $tags = compact('rrd_def');
+        data_update($device, 'asyncos_conns', $tags, $fields);
+
+        $graphs['asyncos_conns'] = true;
+    }
+}

sql-schema/194.sql

@@ -0,0 +1 @@
+INSERT INTO `graph_types`(`graph_type`, `graph_subtype`, `graph_section`, `graph_descr`, `graph_order`) VALUES ('device',  'asyncos_conns',  'proxy',  'Current Connections',  0);