Froxlor/admin_apcuinfo.php

<?php

use Froxlor\UI\Panel\UI;

/*
 * +----------------------------------------------------------------------+
 * | APC |
 * +----------------------------------------------------------------------+
 * | Copyright (c) 2006-2011 The PHP Group |
 * +----------------------------------------------------------------------+
 * | This source file is subject to version 3.01 of the PHP license, |
 * | that is bundled with this package in the file LICENSE, and is |
 * | available through the world-wide-web at the following url: |
 * | http://www.php.net/license/3_01.txt |
 * | If you did not receive a copy of the PHP license and are unable to |
 * | obtain it through the world-wide-web, please send a note to |
 * | license@php.net so we can mail you a copy immediately. |
 * +----------------------------------------------------------------------+
 * | Authors: Ralf Becker <beckerr@php.net> |
 * | Rasmus Lerdorf <rasmus@php.net> |
 * | Ilia Alshanetsky <ilia@prohost.org> |
 * +----------------------------------------------------------------------+
 *
 * All other licensing and usage conditions are those of the PHP Group.
 *
 * Based on https://github.com/krakjoe/apcu/blob/master/apc.php
 * Implemented into Froxlor: Janos Muzsi <muzsij@hypernics.hu>
 *
 */

const AREA = 'admin';
require __DIR__ . '/lib/init.php';

$horizontal_bar_size = 950; // 1280px window width

if ($action == 'delete' && function_exists('apcu_clear_cache') && $userinfo['change_serversettings'] == '1') {
	apcu_clear_cache();
	$log->logAction(\Froxlor\FroxlorLogger::ADM_ACTION, LOG_INFO, "cleared APCu cache");
	header('Location: ' . $linker->getLink(array(
		'section' => 'apcuinfo',
		'page' => 'showinfo'
	)));
	exit();
}

if (!function_exists('apcu_cache_info') || !function_exists('apcu_sma_info')) {
	\Froxlor\UI\Response::standard_error($lng['error']['no_apcuinfo']);
}

if ($page == 'showinfo') {
	$cache = apcu_cache_info();
	$mem = apcu_sma_info();
	$time = time();
	$log->logAction(\Froxlor\FroxlorLogger::ADM_ACTION, LOG_NOTICE, "viewed admin_apcuinfo");

	// check for possible empty values that are used in the templates
	if (!isset($cache['file_upload_progress'])) {
		$cache['file_upload_progress'] = $lng['logger']['unknown'];
	}

	if (!isset($cache['num_expunges'])) {
		$cache['num_expunges'] = $lng['logger']['unknown'];
	}

	$overview = [
		'mem_size' => $mem['num_seg'] * $mem['seg_size'],
		'mem_avail' => $mem['avail_mem'],
		'mem_used' => ($mem['num_seg'] * $mem['seg_size']) - $mem['avail_mem'],
		'seg_size' => bsize($mem['seg_size']),
		'num_hits' => $cache['num_hits'],
		'num_misses' => $cache['num_misses'],
		'num_inserts' => $cache['num_inserts'],
		'req_rate_user' => sprintf("%.2f", $cache['num_hits'] ? (($cache['num_hits'] + $cache['num_misses']) / ($time - $cache['start_time'])) : 0),
		'hit_rate_user' => sprintf("%.2f", $cache['num_hits'] ? (($cache['num_hits']) / ($time - $cache['start_time'])) : 0),
		'miss_rate_user' => sprintf("%.2f", $cache['num_misses'] ? (($cache['num_misses']) / ($time - $cache['start_time'])) : 0),
		'insert_rate_user' => sprintf("%.2f", $cache['num_inserts'] ? (($cache['num_inserts']) / ($time - $cache['start_time'])) : 0),
		'apcversion' => phpversion('apcu'),
		'phpversion' => phpversion(),
		'number_vars' => $cache['num_entries'],
		'size_vars' => bsize($cache['mem_size']),
		'num_hits_and_misses' => 0 >= ($cache['num_hits'] + $cache['num_misses']) ? 1 : ($cache['num_hits'] + $cache['num_misses']),
		'file_upload_progress' => $cache['file_upload_progress'],
		'num_expunges' => $cache['num_expunges'],
		'host' => (function_exists('gethostname')
			? gethostname()
			: (php_uname('n')
				?: (empty($_SERVER['SERVER_NAME'])
					? $_SERVER['HOST_NAME']
					: $_SERVER['SERVER_NAME']
				)
			)
		),
		'server' => $_SERVER['SERVER_SOFTWARE'] ?: '',
		'start_time' => $cache['start_time'],
		'uptime' => duration($cache['start_time'])
	];

	$overview['mem_used_percentage'] = number_format(($overview['mem_used'] / $overview['mem_avail']) * 100, 1);
	$overview['num_hits_percentage'] = number_format(($overview['num_hits'] / $overview['num_hits_and_misses']) * 100, 1);
	$overview['num_misses_percentage'] = number_format(($overview['num_misses'] / $overview['num_hits_and_misses']) * 100, 1);
	$overview['readable'] = [
		'mem_size' => bsize($overview['mem_size']),
		'mem_avail' => bsize($overview['mem_avail']),
		'mem_used' => bsize($overview['mem_used']),
		'num_hits' => number_format($overview['num_hits']),
		'num_misses' => number_format($overview['num_misses']),
		'number_vars' => number_format($overview['number_vars']),
	];

	$overview['runtimelines'] = [];
	foreach (ini_get_all('apcu') as $name => $v) {
		$value = $v['local_value'];
		$overview['runtimelines'][$name] = $value;
	}

	// Fragementation: (freeseg - 1) / total_seg
	$nseg = $freeseg = $fragsize = $freetotal = 0;
	for ($i = 0; $i < $mem['num_seg']; $i++) {
		$ptr = 0;
		foreach ($mem['block_lists'][$i] as $block) {
			if ($block['offset'] != $ptr) {
				++$nseg;
			}
			$ptr = $block['offset'] + $block['size'];
			/* Only consider blocks <5M for the fragmentation % */
			if ($block['size'] < (5 * 1024 * 1024)) $fragsize += $block['size'];
			$freetotal += $block['size'];
		}
		$freeseg += count($mem['block_lists'][$i]);
	}

	$overview['fragmentation'] = [];
	if ($freeseg > 1) {
		$overview['fragmentation']['used_percentage'] = number_format(($fragsize / $freetotal) * 100, 1);
		$overview['fragmentation']['used_bytes'] = $fragsize;
		$overview['fragmentation']['total_bytes'] = $freetotal;
		$overview['fragmentation']['num_frags'] = $freeseg;
		$overview['fragmentation']['readable'] = [
			'used_bytes' => bsize($fragsize),
			'total_bytes' => bsize($freetotal),
			'num_frags' => number_format($freeseg)
		];
	} else {
		$overview['fragmentation'] = 0;
	}

	UI::view('settings/apcuinfo.html.twig', [
		'apcuinfo' => $overview
	]);
}
// pretty printer for byte values
function bsize($size)
{
	$i = 0;
	$val = ['b', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB'];
	while (($size / 1024) > 1) {
		$size /= 1024;
		++$i;
	}
	return sprintf(
		'%.2f%s%s',
		$size,
		'',
		$val[$i]
	);
}

function duration($ts)
{
	global $time;
	$years = (int)((($time - $ts) / (7 * 86400)) / 52.177457);
	$rem = (int)(($time - $ts) - ($years * 52.177457 * 7 * 86400));
	$weeks = (int)(($rem) / (7 * 86400));
	$days = (int)(($rem) / 86400) - $weeks * 7;
	$hours = (int)(($rem) / 3600) - $days * 24 - $weeks * 7 * 24;
	$mins = (int)(($rem) / 60) - $hours * 60 - $days * 24 * 60 - $weeks * 7 * 24 * 60;
	$str = '';
	if ($years == 1) $str .= "$years year, ";
	if ($years > 1) $str .= "$years years, ";
	if ($weeks == 1) $str .= "$weeks week, ";
	if ($weeks > 1) $str .= "$weeks weeks, ";
	if ($days == 1) $str .= "$days day,";
	if ($days > 1) $str .= "$days days,";
	if ($hours == 1) $str .= " $hours hour and";
	if ($hours > 1) $str .= " $hours hours and";
	if ($mins == 1) $str .= " 1 minute";
	else $str .= " $mins minutes";
	return $str;
}