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https://github.com/librenms/librenms.git
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8ab0b2bffd
* Replace custom queries with dbDeleteOrphans(). Generalize dbDeleteOrphans() a bit more. Allow for multiple tables and custom key pairs. * fix whitespace
126 lines
3.7 KiB
PHP
126 lines
3.7 KiB
PHP
<?php
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/**
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* applications.inc.php
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*
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* Discover applications
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* @package LibreNMS
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* @link http://librenms.org
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* @copyright 2016 Tony Murray
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* @author Tony Murray <murraytony@gmail.com>
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*/
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use LibreNMS\Config;
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echo "\nApplications: ";
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// fetch applications from the client
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$results = snmpwalk_cache_oid($device, 'nsExtendStatus', array(), 'NET-SNMP-EXTEND-MIB');
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// Load our list of available applications
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$applications = array();
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if ($results) {
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foreach (glob(Config::get('install_dir') . '/includes/polling/applications/*.inc.php') as $file) {
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$name = basename($file, '.inc.php');
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$applications[$name] = $name;
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}
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// fix applications that don't match their snmp extend name
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$applications['dhcpstats'] = 'dhcp-stats';
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$applications['fbsdnfsclient'] = 'fbsd-nfs-client';
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$applications['fbsdnfsserver'] = 'fbsd-nfs-server';
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$applications['mailq'] = 'postfix';
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$applications['osupdate'] = 'os-updates';
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$applications['phpfpmsp'] = 'php-fpm';
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$applications['postfixdetailed'] = 'postfix';
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}
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d_echo(PHP_EOL . 'Available: ' . implode(', ', array_keys($applications)) . PHP_EOL);
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d_echo('Checking for: ' . implode(', ', array_keys($results)) . PHP_EOL);
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// Generate a list of enabled apps and a list of all discovered apps from the db
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list($enabled_apps, $discovered_apps) = array_reduce(dbFetchRows(
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'SELECT `app_type`,`discovered` FROM `applications` WHERE `device_id`=? ORDER BY `app_type`',
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array($device['device_id'])
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), function ($result, $app) {
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$result[0][] = $app['app_type'];
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if ($app['discovered']) {
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$result[1][] = $app['app_type'];
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}
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return $result;
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}, array(array(), array()));
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// Enable applications
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$current_apps = array();
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foreach ($results as $extend => $result) {
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if (isset($applications[$extend])) {
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$app = $applications[$extend];
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$current_apps[] = $app;
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if (in_array($app, $enabled_apps)) {
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echo '.';
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} else {
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dbInsert(array(
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'device_id' => $device['device_id'],
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'app_type' => $app,
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'discovered' => 1,
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'app_status' => '',
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'app_instance' => ''
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), 'applications');
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echo '+';
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log_event("Application enabled by discovery: $app", $device, 'application', 1);
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}
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}
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}
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// remove non-existing apps
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$apps_to_remove = array_diff($discovered_apps, $current_apps);
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$num = count($apps_to_remove);
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if ($num > 0) {
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echo str_repeat('-', $num);
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$vars = $apps_to_remove;
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array_unshift($vars, $device['device_id']);
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dbDelete(
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'applications',
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'`device_id`=? AND `app_type` IN ' . dbGenPlaceholders($num),
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$vars
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);
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foreach ($apps_to_remove as $app) {
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log_event("Application disabled by discovery: $app", $device, 'application', 3);
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}
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}
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// clean application_metrics
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dbDeleteOrphans('application_metrics', array('applications.app_id'));
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echo PHP_EOL;
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unset(
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$applications,
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$enabled_apps,
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$discovered_apps,
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$current_apps,
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$apps_to_remove,
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$results,
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$file,
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$name,
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$extend,
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$app,
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$num
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);
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