Completed
Pull Request — master (#340)
by
unknown
31:40
created

PredisCache::doFetchAtomic()   A

Complexity

Conditions 3
Paths 2

Size

Total Lines 16
Code Lines 9

Duplication

Lines 0
Ratio 0 %

Code Coverage

Tests 4
CRAP Score 3.7085

Importance

Changes 1
Bugs 0 Features 0
Metric Value
cc 3
eloc 9
nc 2
nop 3
dl 0
loc 16
ccs 4
cts 7
cp 0.5714
crap 3.7085
rs 9.9666
c 1
b 0
f 0
1
<?php
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namespace Doctrine\Common\Cache;
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use Predis\ClientInterface;
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use RuntimeException;
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use function array_combine;
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use function array_filter;
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use function array_map;
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use function call_user_func_array;
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use function class_exists;
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use function serialize;
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use function unserialize;
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/**
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 * Predis cache provider.
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 */
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class PredisCache extends CacheProvider
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{
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    /** @var ClientInterface */
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    private $client;
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    public function __construct(ClientInterface $client)
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    {
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        $this->client = $client;
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    }
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    /**
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     * {@inheritdoc}
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     */
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    protected function doFetch($id)
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    {
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        $result = $this->client->get($id);
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        if ($result === null) {
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            return false;
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        }
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        return unserialize($result);
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    }
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    /**
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     * {@inheritdoc}
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     */
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    protected function doFetchAtomic(string $id, callable $generator, int $ttl)
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    {
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        if (! class_exists('\Predis\Pipeline\Atomic', false)) {
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            throw new RuntimeException('Atomic fetch (atomic pipeline) is not supported by this version of Predis');
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        }
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        return $this->client->pipeline(['atomic'], static function ($pipe) use ($id, $generator, $ttl) {
0 ignored issues
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introduced by
Expected 1 lines after "return", found 0.
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            $pipelineCache = new static($pipe);
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            if ($pipelineCache->contains($id)) {
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                return $pipelineCache->fetch($id);
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            }
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            $data = $generator($id);
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            $pipelineCache->save($id, $data, $ttl);
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            return $data;
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        });
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    }
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    /**
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     * {@inheritdoc}
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     */
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    protected function doFetchMultiple(array $keys)
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    {
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        $fetchedItems = call_user_func_array([$this->client, 'mget'], $keys);
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        return array_map('unserialize', array_filter(array_combine($keys, $fetchedItems)));
0 ignored issues
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Bug introduced by
It seems like array_combine($keys, $fetchedItems) can also be of type false; however, parameter $input of array_filter() does only seem to accept array, maybe add an additional type check? ( Ignorable by Annotation )

If this is a false-positive, you can also ignore this issue in your code via the ignore-type  annotation

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        return array_map('unserialize', array_filter(/** @scrutinizer ignore-type */ array_combine($keys, $fetchedItems)));
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    }
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    /**
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     * {@inheritdoc}
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     */
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    protected function doSaveMultiple(array $keysAndValues, $lifetime = 0)
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    {
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        if ($lifetime) {
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            $success = true;
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            // Keys have lifetime, use SETEX for each of them
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            foreach ($keysAndValues as $key => $value) {
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                $response = (string) $this->client->setex($key, $lifetime, serialize($value));
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                if ($response == 'OK') {
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                    continue;
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                }
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                $success = false;
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            }
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            return $success;
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        }
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        // No lifetime, use MSET
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        $response = $this->client->mset(array_map(static function ($value) {
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            return serialize($value);
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        }, $keysAndValues));
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        return (string) $response == 'OK';
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    }
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    /**
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     * {@inheritdoc}
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     */
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    protected function doContains($id)
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    {
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        return (bool) $this->client->exists($id);
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    }
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    /**
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     * {@inheritdoc}
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     */
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    protected function doSave($id, $data, $lifeTime = 0)
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    {
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        $data = serialize($data);
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        if ($lifeTime > 0) {
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            $response = $this->client->setex($id, $lifeTime, $data);
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        } else {
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            $response = $this->client->set($id, $data);
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        }
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        return $response === true || $response == 'OK';
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    }
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    /**
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     * {@inheritdoc}
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     */
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    protected function doDelete($id)
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    {
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        return $this->client->del($id) >= 0;
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    }
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    /**
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     * {@inheritdoc}
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     */
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    protected function doDeleteMultiple(array $keys)
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    {
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        return $this->client->del($keys) >= 0;
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    }
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    /**
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     * {@inheritdoc}
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     */
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    protected function doFlush()
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    {
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        $response = $this->client->flushdb();
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        return $response === true || $response == 'OK';
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    }
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    /**
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     * {@inheritdoc}
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     */
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    protected function doGetStats()
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    {
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        $info = $this->client->info();
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        return [
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            Cache::STATS_HITS              => $info['Stats']['keyspace_hits'],
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            Cache::STATS_MISSES            => $info['Stats']['keyspace_misses'],
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            Cache::STATS_UPTIME            => $info['Server']['uptime_in_seconds'],
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            Cache::STATS_MEMORY_USAGE      => $info['Memory']['used_memory'],
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            Cache::STATS_MEMORY_AVAILABLE  => false,
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        ];
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    }
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}
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