206 lines
5.0 KiB
PHP
206 lines
5.0 KiB
PHP
<?php
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/*
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Asatru PHP - Model for Caching
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*/
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class CacheModel extends \Asatru\Database\Model {
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/**
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* Obtain value either from cache or from closure
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*
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* @param string $ident The cache item identifier
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* @param int $timeInSeconds Amount of seconds the item shall be cached
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* @param $closure Function to be called for the actual value
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* @return mixed
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*/
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public static function remember($ident, $timeInSeconds, $closure)
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{
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$item = CacheModel::find($ident, 'ident');
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if ($item->count() == 0) {
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$value = $closure();
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$data = array(
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'ident' => $ident,
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'value' => $value,
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'updated_at' => date('Y-m-d H:i:s')
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);
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foreach ($data as $key => $val) {
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CacheModel::insert($key, $val);
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}
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CacheModel::go();
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return $value;
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} else {
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$data = $item->get(0);
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$dtLast = new DateTime(date('Y-m-d H:i:s', strtotime($data->get('updated_at'))));
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$dtLast->add(new DateInterval('PT' . $timeInSeconds . 'S'));
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$dtNow = new DateTime('now');
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if ($dtNow < $dtLast) {
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return $data->get('value');
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} else {
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$value = $closure();
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$updData = array(
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'value' => $value,
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'updated_at' => date('Y-m-d H:i:s')
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);
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foreach ($updData as $key => $val) {
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CacheModel::update($key, $val);
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}
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CacheModel::where('id', '=', $data->get('id'));
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CacheModel::go();
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return $value;
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}
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}
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return null;
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}
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/**
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* Query an entire item
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*
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* @param $ident
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* @param $default
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* @return mixed
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*/
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public static function query($ident, $default = null)
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{
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$what = null;
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if (strpos($ident, '.') !== false) {
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$what = explode('.', $ident);
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}
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$result = CacheModel::where('ident', '=', (((is_array($what)) && (count($what) > 0)) ? $what[0] : $ident))->first();
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if (!$result) {
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return $default;
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}
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if ((is_array($what)) && (count($what) > 1)) {
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return $result->get($what[1]);
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}
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return $result->get('value');
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}
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/**
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* Check for item existence
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*
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* @param $ident
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* @return bool
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*/
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public static function has($ident)
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{
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$item = CacheModel::find($ident, 'ident');
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if ($item->count() > 0) {
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return true;
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}
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return false;
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}
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/**
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* Check if item cache time is elapsed
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*
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* @param $ident
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* @param $timeInSeconds
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* @return bool
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*/
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public static function elapsed($ident, $timeInSeconds)
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{
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if (!CacheModel::has($ident)) {
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return false;
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}
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$data = CacheModel::where('ident', '=', $ident)->first();
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$dtLast = new DateTime(date('Y-m-d H:i:s', strtotime($data->get('updated_at'))));
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$dtLast->add(new DateInterval('PT' . $timeInSeconds . 'S'));
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$dtNow = new DateTime('now');
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return ($dtNow >= $dtLast);
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}
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/**
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* Get item and then delete it
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*
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* @param $ident
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* @return mixed
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*/
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public static function pull($ident)
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{
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$item = CacheModel::find($ident, 'ident');
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if ($item->count() > 0) {
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$data = $item->get(0);
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CacheModel::where('id', '=', $item->get(0)->get('id'))->delete();
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return $data->get('value');
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}
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return null;
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}
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/**
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* Write item to table
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*
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* @param $ident
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* @param $value
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* @return bool
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*/
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public static function put($ident, $value)
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{
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if (CacheModel::has($ident)) {
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return false;
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}
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$data = array(
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'ident' => $ident,
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'value' => $value,
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'updated_at' => date('Y-m-d H:i:s')
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);
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foreach ($data as $key => $val) {
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CacheModel::insert($key, $val);
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}
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CacheModel::go();
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return true;
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}
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/**
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* Forget cache item
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*
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* @param string $ident The item identifier
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* @return bool
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*/
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public static function forget($ident)
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{
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$item = CacheModel::find($ident, 'ident');
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if ($item->count() > 0) {
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CacheModel::where('id', '=', $item->get(0)->get('id'))->delete();
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return true;
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}
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return false;
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}
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/**
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* Return the associated table name of the migration
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*
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* @return string
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*/
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public static function tableName()
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{
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return 'CacheModel';
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}
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}
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