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poller_rrdcheck.php
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#!/usr/bin/env php
<?php
/*
+-------------------------------------------------------------------------+
| Copyright (C) 2004-2024 The Cacti Group |
| |
| 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 2 |
| of the License, or (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
+-------------------------------------------------------------------------+
| Cacti: The Complete RRDtool-based Graphing Solution |
+-------------------------------------------------------------------------+
| This code is designed, written, and maintained by the Cacti Group. See |
| about.php and/or the AUTHORS file for specific developer information. |
+-------------------------------------------------------------------------+
| http://www.cacti.net/ |
+-------------------------------------------------------------------------+
*/
if (function_exists('pcntl_async_signals')) {
pcntl_async_signals(true);
} else {
declare(ticks = 100);
}
ini_set('output_buffering', 'Off');
require(__DIR__ . '/include/cli_check.php');
require_once(CACTI_PATH_LIBRARY . '/poller.php');
require_once(CACTI_PATH_LIBRARY . '/rrd.php');
require_once(CACTI_PATH_LIBRARY . '/rrdcheck.php');
/* process calling arguments */
$parms = $_SERVER['argv'];
array_shift($parms);
$debug = false;
$forcerun = false;
$type = 'pmaster';
$thread_id = 0;
global $rrd_files, $total_system, $total_user, $total_real, $total_dsses;
global $user_time, $system_time, $real_time;
$total_system = 0;
$total_user = 0;
$total_real = 0;
$total_dsses = 0;
$system_time = 0;
$user_time = 0;
$real_time = 0;
$rrd_files = 0;
if (cacti_sizeof($parms)) {
foreach ($parms as $parameter) {
if (strpos($parameter, '=')) {
list($arg, $value) = explode('=', $parameter);
} else {
$arg = $parameter;
$value = '';
}
switch ($arg) {
case '-d':
case '--debug':
$debug = true;
break;
case '-f':
case '--force':
$forcerun = true;
break;
case '--type':
$type = $value;
break;
case '--child':
$thread_id = $value;
break;
case '--version':
case '-v':
case '-V':
display_version();
exit(0);
case '--help':
case '-h':
case '-H':
display_help();
exit(0);
default:
print 'ERROR: Invalid Parameter ' . $parameter . PHP_EOL . PHP_EOL;
display_help();
exit(1);
}
}
}
/**
* Types include
*
* pmaster - the main process launched from the Cacti main poller and will launch child processes
* pchild - a child of the master process from the 'master'
*
* bmaster - a boost master process, will perform launch bchild processes
* bchild - a child of the boost master process, will launch boost collection
*/
/* install signal handlers for UNIX only */
if (function_exists('pcntl_signal')) {
pcntl_signal(SIGTERM, 'sig_handler');
pcntl_signal(SIGINT, 'sig_handler');
}
/* take time and log performance data */
$start = microtime(true);
/* let's give this script lot of time to run for ever */
ini_set('max_execution_time', '0');
/* send a gentle message to the log and stdout */
rrdcheck_debug('Polling Starting');
/* silently end if the registered process is still running */
if (!$forcerun) {
if (!register_process_start('rrdcheck', $type, $thread_id, read_config_option('rrdcheck_timeout'))) {
exit(0);
}
}
// Collect data as determined by the type
switch ($type) {
case 'pmaster':
if (read_config_option('rrdcheck_enable') == 'on' || $forcerun) {
rrdcheck_master_handler($forcerun);
}
break;
case 'bmaster': // Launched at the end of boost
rrdcheck_launch_children($type);
/* Wait for all processes to continue */
while ($running = rrdcheck_processes_running($type)) {
rrdcheck_debug(sprintf('%s Processes Running, Sleeping for 2 seconds.', $running));
sleep(2);
}
break;
case 'child': // Launched by the master process
case 'bchild': // Launched by the boost process
$child_start = microtime(true);
do_rrdcheck($thread_id);
$total_time = microtime(true) - $child_start;
rrdcheck_log_child_stats($type, $thread_id, $total_time);
break;
}
rrdcheck_debug('Polling Ending');
set_config_option('rrdcheck_last_run_time', time());
if (!$forcerun) {
unregister_process('rrdcheck', $type, $thread_id);
}
exit(0);
function rrdcheck_master_handler($forcerun) {
global $type;
/* read some important settings relative to timing from the database */
$run_interval = read_config_option('rrdcheck_interval');
$last_run = read_config_option('rrdcheck_last_run_time');
/* see if boost is active or not */
$boost_active = read_config_option('boost_rrd_update_enable');
/* next let's see if it's time to update the interval */
$current_time = time();
if ($boost_active == 'on') {
// boost will spawn the collector
rrdcheck_debug('Skipping Periodic Rollup - Boost will handle the Periodic Roll-up Cycle');
} else {
if ($run_interval == 'boost') {
cacti_log("WARNING: RRDcheck interval set to 'boost' and boost not enabled, resetting to default of 4 hours", false, 'RRDCHECK');
set_config_option('rrdcheck_interval', 240);
$run_interval = 240;
}
// determine if it's time to determine hourly averages
if (empty($last_run)) {
// since the poller has never run before, let's fake it out
set_config_option('rrdcheck_last_run_time', ($current_time-86400));
}
// if it's time to check, do so now
if ((!empty($last_run) && (($last_run + ($run_interval * 60)) < $current_time)) || $forcerun) {
rrdcheck_launch_children($type);
// Wait for all processes to continue
while ($running = rrdcheck_processes_running($type)) {
rrdcheck_debug(sprintf('%s Processes Running, Sleeping for 2 seconds.', $running));
sleep(2);
}
// delete old data
db_execute('DELETE FROM rrdcheck WHERE test_date < DATE_SUB(NOW(), INTERVAL 7 DAY)');
rrdcheck_log_statistics('HOURLY');
}
}
}
/**
* display_version - displays version information
*/
function display_version() {
$version = get_cacti_cli_version();
print "Cacti RRD Check Poller, Version $version " . COPYRIGHT_YEARS . PHP_EOL;
}
/**
* display_help - generic help screen for utilities
*/
function display_help() {
display_version();
print PHP_EOL . 'usage: poller_rrdcheck.php [--force] [--debug]' . PHP_EOL . PHP_EOL;
print 'Cacti\'s RRD check poller. This poller will periodically' . PHP_EOL;
print 'check rrdfiles and saved datasources and works in conjunction' . PHP_EOL;
print 'with Cacti\'s performance boosting poller as required.' . PHP_EOL . PHP_EOL;
print 'System Controlled:' . PHP_EOL;
print ' --type - The type and subtype of the rrdcheck process' . PHP_EOL;
print ' --child - The thread id of the child process' . PHP_EOL . PHP_EOL;
print 'Optional:' . PHP_EOL;
print ' --force - Force the execution of a update process' . PHP_EOL;
print ' --debug - Display verbose output during execution' . PHP_EOL . PHP_EOL;
}
/**
* sig_handler - provides a generic means to catch exceptions to the Cacti log.
*
* @param $signo - (int) the signal that was thrown by the interface.
*
* @return - null
*/
function sig_handler($signo) {
global $type, $thread_id;
switch ($signo) {
case SIGTERM:
case SIGINT:
cacti_log('WARNING: rrdcheck Poller terminated by user', false, 'RRDCHECK');
/* tell the main poller that we are done */
if ($type == 'master') {
set_config_option('rrdcheck_poller_status', 'terminated - end time:' . date('Y-m-d G:i:s'));
}
if (strpos($type, 'master') !== false) {
rrdcheck_kill_running_processes();
}
unregister_process('rrdcheck', $type, $thread_id, getmypid());
exit(1);
break;
default:
/* ignore all other signals */
}
}