Cmp\Cache\Infrastructure\RedisCache

Complexity

Total Complexity

15

Size/Duplication

Total Lines	89
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	1

Importance

Changes	1
Bugs	0	Features	0

6 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	4	1
A	delete()	0	8	2
A	set()	0	12	3
A	has()	0	8	2
B	get()	0	16	5
A	pull()	0	8	2

<?php

namespace Cmp\Cache\Infrastructure;

use Cmp\Cache\Domain\Cache;
use Cmp\Cache\Domain\ExceptionsException;
use Cmp\Cache\Domain\Exceptions\NotFoundException;
use Exception;
use Redis;

/**
 * Class RedisCache
 * 
 * A redis powered backend for caching
 *
 * @package Cmp\Cache\Infrastureture
 */
class RedisCache implements Cache
{
    /**
     * @var Redis
     */
    private $client;

    /**
     * RedisCache constructor.
     *
     * @param Redis $client
     */
    public function __construct(Redis $client)
    {
        $this->client = $client;
    }

    /**
     * {@inheritdoc}
     */
    public function delete($key)
    {
        try {
            $this->client->delete($key);
        } catch (Exception $exception) {
            throw new BackendException("Redis raised an exception deleting item $key", $exception);
        }
    }

    /**
     * {@inheritdoc}
     */
    public function set($key, $value, $timeToLive = 0)
    {
        try {
            if ($timeToLive > 0) {
                $this->client->setex($key, $timeToLive, $value);
            } else {
                $this->client->set($key, $value);
            }
        } catch (Exception $exception) {
            throw new BackendException("Redis raised an exception setting item $key", $exception);
        }
    }

    /**
     * {@inheritdoc}
     */
    public function has($key)
    {
        try {
            return $this->client->exists($key);
        } catch (Exception $exception) {
            throw new BackendException("Redis raised an exception checking for item $key", $exception);
        }
    }

    /**
     * {@inheritdoc}
     */
    public function get($key)
    {
        try {
            $value = $this->client->get($key);

            if (!$value && !$this->client->exists($key)) {
                throw new NotFoundException($key);
            }

            return $value;
        } catch (NotFoundException $exception) {
            throw $exception;
        } catch (Exception $exception) {
            throw new BackendException("Redis raised an exception getting item $key", $exception);
        }
    }

    /**
     * {@inheritdoc}
     */
    public function pull($key, $default = null)
    {
        try {
            return $this->get($key);
        } catch (NotFoundException $exception) {
            return $default;
        }
    }
}