Completed
Pull Request — master (#10)
by Krishnaprasad
08:08 queued 03:56
created

ThrottlerCache::__construct()   A

Complexity

Conditions 1
Paths 1

Size

Total Lines 4
Code Lines 2

Duplication

Lines 0
Ratio 0 %

Code Coverage

Tests 3
CRAP Score 1

Importance

Changes 0
Metric Value
dl 0
loc 4
ccs 3
cts 3
cp 1
rs 10
c 0
b 0
f 0
cc 1
eloc 2
nc 1
nop 1
crap 1
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<?php
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/**
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 * The MIT License (MIT)
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 *
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 * Copyright (c) 2015 Krishnaprasad MG <[email protected]>
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 *
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 * Permission is hereby granted, free of charge, to any person obtaining a copy
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 * of this software and associated documentation files (the "Software"), to deal
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 * in the Software without restriction, including without limitation the rights
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 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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 * copies of the Software, and to permit persons to whom the Software is
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 * furnished to do so, subject to the following conditions:
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 *
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 * The above copyright notice and this permission notice shall be included in all
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 * copies or substantial portions of the Software.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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 * SOFTWARE.
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 */
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namespace Sunspikes\Ratelimit\Cache;
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use Psr\Cache\CacheItemPoolInterface;
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use Psr\Cache\CacheException as PsrCacheException;
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use Sunspikes\Ratelimit\Cache\Exception\CacheAdapterException;
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use Sunspikes\Ratelimit\Cache\Exception\ItemNotFoundException;
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class ThrottlerCache implements ThrottlerCacheInterface
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{
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    /**
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     * @var CacheItemPoolInterface
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     */
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    private $cacheItemPool;
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    /**
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     * ThrottlerCache constructor.
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     *
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     * @param CacheItemPoolInterface $cacheItemPool
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     */
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    public function __construct(CacheItemPoolInterface $cacheItemPool)
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    {
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        $this->cacheItemPool = $cacheItemPool;
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    }
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    /**
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     * @param string $key
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     *
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     * @return ThrottlerItemInterface
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     */
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    public function getItem(string $key): ThrottlerItemInterface
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    {
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        $item = $this->getThrottlerItem($key);
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        return $item;
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    }
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    /**
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     * @param string $key
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     *
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     * @return bool
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     */
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    public function hasItem(string $key): bool
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    {
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        return $this->cacheItemPool->hasItem($key);
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    }
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    /**
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     * @param string $key
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     * @param mixed  $item
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     * @return bool
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     */
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    public function setItem(string $key, ThrottlerItemInterface $item): bool
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    {
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        return $this->setThrottlerItem($key, $item);
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    }
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    /**
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     * @param string $key
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     */
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    public function removeItem(string $key)
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    {
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        $this->cacheItemPool->deleteItem($key);
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    }
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    /**
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     * @param string $key
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     *
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     * @return ThrottlerItemInterface
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     * @throws CacheAdapterException
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     * @throws ItemNotFoundException
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     */
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    private function getThrottlerItem(string $key): ThrottlerItemInterface
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    {
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        try {
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            $item = $this->cacheItemPool->getItem($key);
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            if ($item->isHit()) {
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                $params = json_decode($item->get(), true);
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                $class = $params['class'];
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                return $class::createFromArray($params['data']);
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            }
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        } catch (PsrCacheException $e) {
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        }
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        throw new ItemNotFoundException('Item not found.');
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    }
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    /**
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     * @param string                 $key
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     * @param ThrottlerItemInterface $item
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     *
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     * @return bool
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     * @throws CacheAdapterException
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     */
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    private function setThrottlerItem(string $key, ThrottlerItemInterface $item)
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    {
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        try {
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            $cacheItem = $this->cacheItemPool->getItem($key);
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            if ($cacheItem->isHit()) {
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                $this->cacheItemPool->deleteItem($key);
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            }
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        } catch (PsrCacheException $e) {
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            throw new CacheAdapterException($e->getMessage(), $e->getCode(), $e->getPrevious());
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        }
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        $cacheItem->set(
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            json_encode(
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                [
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                    'class' => get_class($item),
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                    'data'  => $item,
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                ]
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            )
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        );
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        $cacheItem->expiresAfter($item->getTtl());
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        return $this->cacheItemPool->save($cacheItem);
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    }
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}