RedisCache::__construct() - Code Metrics - Inspection of "Add source code and tests, update support files" - yiisoft/cache-redis - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Pull Request — master (#1)

by Evgeniy

created 2021-11-07 10:00 UTC

RedisCache::__construct() A

↳ Parent: RedisCache

Complexity

Conditions	1
Paths	1

Size

Total Lines	3
Code Lines	1

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	2
CRAP Score	1

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
eloc	1
c	1
b	0
f	0
dl	0
loc	3
ccs	2
cts	2
cp	1
rs	10
cc	1
nc	1
nop	1
crap	1

<?php

declare(strict_types=1);

namespace Yiisoft\Cache\Redis;

use DateInterval;
use DateTime;
use Predis\ClientInterface;
use Predis\Response\Status;
use Psr\SimpleCache\CacheInterface;
use Traversable;

use function array_fill_keys;
use function array_keys;
use function array_map;
use function count;
use function gettype;
use function is_iterable;
use function is_string;
use function iterator_to_array;
use function serialize;
use function strpbrk;
use function unserialize;

/**
 * RedisCache stores cache data in a Redis.
 *
 * Please refer to {@see CacheInterface} for common cache operations that are supported by RedisCache.
 */
final class RedisCache implements CacheInterface
{
    /**
     * @var ClientInterface $client Predis client instance to use.
     */
    private ClientInterface $client;

    /**
     * @param ClientInterface $client Predis client instance to use.
     */
    public function __construct(ClientInterface $client)
    {
        $this->client = $client;
    }

    public function get($key, $default = null)
    {
        if (!$this->has($key)) {
            return $default;
        }

        $result = $this->client->get($key);
        return $result === null ? $default : unserialize($result);
    }

    public function set($key, $value, $ttl = null): bool
    {
        $ttl = $this->normalizeTtl($ttl);

        if ($this->isExpiredTtl($ttl)) {
            return $this->delete($key);
        }

        $this->validateKey($key);

        /** @var Status|null $result */
        $result = $this->isInfinityTtl($ttl)
            ? $this->client->set($key, serialize($value))
            : $this->client->set($key, serialize($value), 'EX', $ttl)
        ;

        return $result !== null;
    }

    public function delete($key): bool
    {
        return !$this->has($key) || $this->client->del($key) === 1;
    }

    public function clear(): bool
    {
        return $this->client->flushdb() !== null;
    }

    public function getMultiple($keys, $default = null): iterable
    {
        $keys = $this->iterableToArray($keys);
        $this->validateKeys($keys);
        /** @var string[] $keys */
        $values = array_fill_keys($keys, $default);
        /** @var null[]|string[] $valuesFromCache */
        $valuesFromCache = $this->client->mget($keys);

        $i = 0;
        /** @var mixed $default */
        foreach ($values as $key => $default) {
            /** @psalm-suppress MixedAssignment */
            $values[$key] = isset($valuesFromCache[$i]) ? unserialize($valuesFromCache[$i]) : $default;
            $i++;
        }

        return $values;
    }

    public function setMultiple($values, $ttl = null): bool
    {
        $values = $this->iterableToArray($values);
        $keys = array_map('\strval', array_keys($values));
        $this->validateKeys($keys);
        $ttl = $this->normalizeTtl($ttl);
        $serializeValues = [];

        if ($this->isExpiredTtl($ttl)) {
            return $this->deleteMultiple($keys);
        }

        /** @var mixed $value */
        foreach ($values as $key => $value) {
            $serializeValues[$key] = serialize($value);
        }

        if ($this->isInfinityTtl($ttl)) {
            $this->client->mset($serializeValues);
            return true;
        }

        $this->client->multi();
        $this->client->mset($serializeValues);

        foreach ($keys as $key) {
            $this->client->expire($key, $ttl);
        }

        $results = $this->client->exec();

        /** @var Status|null $result */
        foreach ((array) $results as $result) {
            if ($result === null) {
                return false;
            }
        }

        return true;
    }

    public function deleteMultiple($keys): bool
    {
        $keys = $this->iterableToArray($keys);

        /** @psalm-suppress MixedAssignment, MixedArgument */
        foreach ($keys as $index => $key) {
            if (!$this->has($key)) {
                unset($keys[$index]);
            }
        }

        return empty($keys) || $this->client->del($keys) === count($keys);
    }

    public function has($key): bool
    {
        $this->validateKey($key);
        $ttl = $this->client->ttl($key);
        /** "-1" - if the key exists but has no associated expire {@see https://redis.io/commands/ttl}. */
        return $ttl > 0 || $ttl === -1;
    }

    /**
     * Normalizes cache TTL handling `null` value, strings and {@see DateInterval} objects.
     *
     * @param DateInterval|int|string|null $ttl The raw TTL.
     *
     * @return int TTL value as UNIX timestamp.
     */
    private function normalizeTtl($ttl): ?int
    {
        if ($ttl === null) {
            return null;
        }

        if ($ttl instanceof DateInterval) {
            return (new DateTime('@0'))->add($ttl)->getTimestamp();
        }

        return (int) $ttl;
    }

    /**
     * Converts iterable to array. If provided value is not iterable it throws an InvalidArgumentException.
     *
     * @param mixed $iterable
     *
     * @return array
     */
    private function iterableToArray($iterable): array
    {
        if (!is_iterable($iterable)) {
            throw new InvalidArgumentException('Iterable is expected, got ' . gettype($iterable));
        }

        /** @psalm-suppress RedundantCast */
        return $iterable instanceof Traversable ? iterator_to_array($iterable) : (array) $iterable;
    }

    /**
     * @param mixed $key
     */
    private function validateKey($key): void
    {
        if (!is_string($key) || $key === '' || strpbrk($key, '{}()/\@:')) {
            throw new InvalidArgumentException('Invalid key value.');
        }
    }

    /**
     * @param array $keys
     */
    private function validateKeys(array $keys): void
    {
        if (empty($keys)) {
            throw new InvalidArgumentException('Invalid key values.');
        }

        /** @var mixed $key */
        foreach ($keys as $key) {
            $this->validateKey($key);
        }
    }

    private function isExpiredTtl(?int $ttl): bool
    {
        return $ttl !== null && $ttl <= 0;
    }

    private function isInfinityTtl(?int $ttl): bool
    {
        return $ttl === null;
    }
}


1		<?php
2
3		declare(strict_types=1);
4
5		namespace Yiisoft\Cache\Redis;
6
7		use DateInterval;
8		use DateTime;
9		use Predis\ClientInterface;
10		use Predis\Response\Status;
11		use Psr\SimpleCache\CacheInterface;
12		use Traversable;
13
14		use function array_fill_keys;
15		use function array_keys;
16		use function array_map;
17		use function count;
18		use function gettype;
19		use function is_iterable;
20		use function is_string;
21		use function iterator_to_array;
22		use function serialize;
23		use function strpbrk;
24		use function unserialize;
25
26		/**
27		* RedisCache stores cache data in a Redis.
28		*
29		* Please refer to {@see CacheInterface} for common cache operations that are supported by RedisCache.
30		*/
31		final class RedisCache implements CacheInterface
32		{
33		/**
34		* @var ClientInterface $client Predis client instance to use.
35		*/
36		private ClientInterface $client;
37
38		/**
39		* @param ClientInterface $client Predis client instance to use.
40		*/
41	166	public function __construct(ClientInterface $client)
42		{
43	166	$this->client = $client;
44	166	}
45
46	73	public function get($key, $default = null)
47		{
48	73	if (!$this->has($key)) {
49	25	return $default;
50		}
51
52	52	$result = $this->client->get($key);
53	52	return $result === null ? $default : unserialize($result);
54		}
55
56	81	public function set($key, $value, $ttl = null): bool
57		{
58	81	$ttl = $this->normalizeTtl($ttl);
59
60	81	if ($this->isExpiredTtl($ttl)) {
61	1	return $this->delete($key);
62		}
63
64	80	$this->validateKey($key);
65
66		/** @var Status\|null $result */
67	72	$result = $this->isInfinityTtl($ttl)
68	72	? $this->client->set($key, serialize($value))
69		: $this->client->set($key, serialize($value), 'EX', $ttl)
70		;
71
72	72	return $result !== null;
73		}
74
75	22	public function delete($key): bool
76		{
77	22	return !$this->has($key) \|\| $this->client->del($key) === 1;
78		}
79
80	166	public function clear(): bool
81		{
82	166	return $this->client->flushdb() !== null;
83		}
84
85	24	public function getMultiple($keys, $default = null): iterable
86		{
87	24	$keys = $this->iterableToArray($keys);
88	16	$this->validateKeys($keys);
89		/** @var string[] $keys */
90	7	$values = array_fill_keys($keys, $default);
91		/** @var null[]\|string[] $valuesFromCache */
92	7	$valuesFromCache = $this->client->mget($keys);
93
94	7	$i = 0;
95		/** @var mixed $default */
96	7	foreach ($values as $key => $default) {
97		/** @psalm-suppress MixedAssignment */
98	7	$values[$key] = isset($valuesFromCache[$i]) ? unserialize($valuesFromCache[$i]) : $default;
99	7	$i++;
100		}
101
102	7	return $values;
103		}
104
105	21	public function setMultiple($values, $ttl = null): bool
106		{
107	21	$values = $this->iterableToArray($values);
108	13	$keys = array_map('\strval', array_keys($values));
109	13	$this->validateKeys($keys);
110	12	$ttl = $this->normalizeTtl($ttl);
111	12	$serializeValues = [];
112
113	12	if ($this->isExpiredTtl($ttl)) {
114		return $this->deleteMultiple($keys);
115		}
116
117		/** @var mixed $value */
118	12	foreach ($values as $key => $value) {
119	12	$serializeValues[$key] = serialize($value);
120		}
121
122	12	if ($this->isInfinityTtl($ttl)) {
123	9	$this->client->mset($serializeValues);
124	9	return true;
125		}
126
127	3	$this->client->multi();
128	3	$this->client->mset($serializeValues);
129
130	3	foreach ($keys as $key) {
131	3	$this->client->expire($key, $ttl);
132		}
133
134	3	$results = $this->client->exec();
135
136		/** @var Status\|null $result */
137	3	foreach ((array) $results as $result) {
138	3	if ($result === null) {
139	1	return false;
140		}
141		}
142
143	2	return true;
144		}
145
146	18	public function deleteMultiple($keys): bool
147		{
148	18	$keys = $this->iterableToArray($keys);
149
150		/** @psalm-suppress MixedAssignment, MixedArgument */
151	10	foreach ($keys as $index => $key) {
152	10	if (!$this->has($key)) {
153	1	unset($keys[$index]);
154		}
155		}
156
157	2	return empty($keys) \|\| $this->client->del($keys) === count($keys);
158		}
159
160	99	public function has($key): bool
161		{
162	99	$this->validateKey($key);
163	67	$ttl = $this->client->ttl($key);
164		/** "-1" - if the key exists but has no associated expire {@see https://redis.io/commands/ttl}. */
165	67	return $ttl > 0 \|\| $ttl === -1;
166		}
167
168		/**
169		* Normalizes cache TTL handling `null` value, strings and {@see DateInterval} objects.
170		*
171		* @param DateInterval\|int\|string\|null $ttl The raw TTL.
172		*
173		* @return int TTL value as UNIX timestamp.
174		*/
175	99	private function normalizeTtl($ttl): ?int
176		{
177	99	if ($ttl === null) {
178	90	return null;
179		}
180
181	10	if ($ttl instanceof DateInterval) {
182	2	return (new DateTime('@0'))->add($ttl)->getTimestamp();
183		}
184
185	8	return (int) $ttl;
186		}
187
188		/**
189		* Converts iterable to array. If provided value is not iterable it throws an InvalidArgumentException.
190		*
191		* @param mixed $iterable
192		*
193		* @return array
194		*/
195	55	private function iterableToArray($iterable): array
196		{
197	55	if (!is_iterable($iterable)) {
198	24	throw new InvalidArgumentException('Iterable is expected, got ' . gettype($iterable));
199		}
200
201		/** @psalm-suppress RedundantCast */
202	31	return $iterable instanceof Traversable ? iterator_to_array($iterable) : (array) $iterable;
203		}
204
205		/**
206		* @param mixed $key
207		*/
208	133	private function validateKey($key): void
209		{
210	133	if (!is_string($key) \|\| $key === '' \|\| strpbrk($key, '{}()/\@:')) {
211	48	throw new InvalidArgumentException('Invalid key value.');
212		}
213	85	}
214
215		/**
216		* @param array $keys
217		*/
218	23	private function validateKeys(array $keys): void
219		{
220	23	if (empty($keys)) {
221	2	throw new InvalidArgumentException('Invalid key values.');
222		}
223
224		/** @var mixed $key */
225	21	foreach ($keys as $key) {
226	21	$this->validateKey($key);
227		}
228	13	}
229
230	92	private function isExpiredTtl(?int $ttl): bool
231		{
232	92	return $ttl !== null && $ttl <= 0;
233		}
234
235	84	private function isInfinityTtl(?int $ttl): bool
236		{
237	84	return $ttl === null;
238		}
239		}
240

yiisoft / cache-redis

Pull Request — master (#1)

RedisCache::__construct() A

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